WO2024024078A1 - Solenoid control device - Google Patents

Solenoid control device Download PDF

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Publication number
WO2024024078A1
WO2024024078A1 PCT/JP2022/029265 JP2022029265W WO2024024078A1 WO 2024024078 A1 WO2024024078 A1 WO 2024024078A1 JP 2022029265 W JP2022029265 W JP 2022029265W WO 2024024078 A1 WO2024024078 A1 WO 2024024078A1
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WO
WIPO (PCT)
Prior art keywords
magnetic pole
movable magnetic
coil
opposing
solenoid
Prior art date
Application number
PCT/JP2022/029265
Other languages
French (fr)
Japanese (ja)
Inventor
峻輔 山田
新太 中島
Original Assignee
株式会社オートネットワーク技術研究所
住友電装株式会社
住友電気工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 株式会社オートネットワーク技術研究所, 住友電装株式会社, 住友電気工業株式会社 filed Critical 株式会社オートネットワーク技術研究所
Priority to PCT/JP2022/029265 priority Critical patent/WO2024024078A1/en
Publication of WO2024024078A1 publication Critical patent/WO2024024078A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings

Definitions

  • the present disclosure relates to a solenoid control device.
  • Patent Document 1 discloses a method of suppressing the rotation of a motor that drives an electric pressing device using a solenoid.
  • a solenoid generates power by passing current through a coil to magnetize a fixed magnetic pole and attracting a movable magnetic pole. If a solenoid continues to apply current to the coil, it will continue to accelerate the movable magnetic pole, causing the movable magnetic pole to collide with the fixed magnetic pole, resulting in a loud collision noise.
  • the present disclosure was completed based on the above-mentioned circumstances, and an object of the present disclosure is to provide a solenoid control device that can perform control while suppressing loud noises from the solenoid.
  • the solenoid control device of the present disclosure includes: A solenoid control device that controls a solenoid that has a coil, a movable magnetic pole part, and a facing part, and in which the movable magnetic pole part is displaced so as to move in a direction toward the facing part and in a direction away from the facing part. There it is, comprising a control unit that controls the current flowing through the coil, The control unit adjusts the current flowing through the coil so that the value of the current flowing through the coil gradually increases during an initial period until the movable magnetic pole part starts moving in a direction away from the opposing part. Execute climb control.
  • control can be performed to suppress generation of loud noise from the solenoid.
  • FIG. 1 is a schematic diagram showing the configuration of a solenoid control device according to a first embodiment and a solenoid to be controlled.
  • FIG. 2 is a schematic diagram of the solenoid according to the first embodiment, showing a state in which the movable magnetic pole part is attracted to the first opposing part.
  • FIG. 3 is a schematic diagram of the solenoid according to the first embodiment, showing a state in which the movable magnetic pole part is attracted to the second opposing part.
  • FIG. 4 shows the magnitude of the current flowing through the coil when the movable magnetic pole part is attracted to the first opposing part, the amount of displacement of the movable magnetic pole part ascertained by the calculation unit, and the drive input from the external ECU to the control unit.
  • FIG. 5 is a timing chart showing changes in signals.
  • FIG. 5 shows the magnitude of the current flowing through the coil when the movable magnetic pole part is attracted to the second opposing part, the amount of displacement of the movable magnetic pole part ascertained by the calculation unit, and the drive input from the external ECU to the control unit.
  • FIG. 6 is a schematic diagram showing the configuration of a solenoid control device according to the second embodiment and a solenoid to be controlled.
  • FIG. 7 is a schematic diagram of the solenoid according to the second embodiment, showing a state in which the movable magnetic pole main body is farthest from the first opposing portion.
  • FIG. 8 is a schematic diagram of the solenoid according to the second embodiment, showing a state in which the movable magnetic pole main body is attracted to the first opposing part.
  • FIG. 9 shows the magnitude of the current flowing through the coil in the state where the movable magnetic pole body is the farthest away from the first opposing part, the amount of displacement of the movable magnetic pole body detected by the calculation unit, and input from the external ECU to the control unit.
  • 3 is a timing chart showing changes in a drive signal.
  • FIG. 10 shows the magnitude of the current flowing through the coil when the movable magnetic pole body is attracted to the first opposing part, the amount of displacement of the movable magnetic pole body detected by the calculation unit, and input from the external ECU to the control unit.
  • 3 is a timing chart showing changes in a drive signal.
  • the solenoid control device of the present disclosure includes a coil, a movable magnetic pole portion, and an opposing portion, and includes a solenoid in which the movable magnetic pole portion is displaced so as to move in a direction toward the opposing portion and a direction away from the opposing portion. Controlled.
  • This solenoid control device includes a control section that controls the current flowing through the coil.
  • the control unit executes current increase control to adjust the current flowing through the coil so that the value of the current flowing through the coil gradually increases during an initial period until the movable magnetic pole part starts moving in a direction away from the opposing part. .
  • the solenoid control device of [1] above can avoid rapid acceleration of the movable magnetic pole portion.
  • the solenoid control device of [1] above may include a detection unit that detects the start of movement of the movable magnetic pole portion.
  • the initial period is from the time when current supply to the coil is started until the time when the detection section detects the start of movement of the movable magnetic pole section, and the control section can execute current increase control during the initial period.
  • the solenoid control device in [2] above is configured to perform current increase control in the initial period, the control unit reliably separates and executes current control in the initial period and the period after the initial period. be able to.
  • FIG. 1 illustrates a solenoid control system 100 provided with a solenoid control device 170 according to the first embodiment.
  • the solenoid control system 100 is a system in which a solenoid control device 170 controls the operation of the solenoid 130.
  • the solenoid 130 is provided in a vehicle and functions as an actuator.
  • the solenoid control system 100 includes a solenoid 130 and a solenoid control device 170.
  • the solenoid control device 170 includes a detection section 75 and a control section 172.
  • the object to be controlled by the solenoid control device 170 is the solenoid 130 .
  • the solenoid 130 includes a coil 31, a facing portion 133, a movable magnetic pole portion 132, and a rod 35. Current is supplied to the coil 31 from the switching section 74. Solenoid 130 is an object to be controlled by solenoid control device 170.
  • the facing part 133 has a first facing part 133A and a second facing part 133B.
  • the first opposing portion 133A is arranged in an annular shape around the axis R at one end of the coil 31.
  • the first opposing portion 133A is arranged at one end of the coil 31 and is fixed to the coil 31. In other words, the first opposing portion 133A is a fixed magnetic pole.
  • a portion of the first opposing portion 133A is disposed within the coil 31.
  • the first opposing portion 133A is made of a magnetic material.
  • the second opposing portion 133B is arranged in an annular shape around the axis R at the other end of the coil 31.
  • the second opposing portion 133B is arranged at the other end of the coil 31 and is fixed to the coil 31.
  • the second opposing portion 133B is a fixed magnetic pole.
  • a portion of the second opposing portion 133B is disposed within the coil 31.
  • the second opposing portion 133B is made of a magnetic material.
  • 133 A of 1st opposing parts and the 2nd opposing part 133B are spaced apart.
  • the first opposing portion 133A and the second opposing portion 133B have the same form.
  • the first opposing portion 133A and the second opposing portion 133B become magnetic when a movable magnetic pole portion 132 (described later) comes into contact with them and a permanent magnet 132A approaches them.
  • a movable magnetic pole portion 132 (described later) comes into contact with them and a permanent magnet 132A approaches them.
  • the permanent magnet 132A on the first opposing part 133A side causes the first opposing part 133A to have an S pole in the region on one end side in the axis R direction and an S pole in the axis R direction.
  • the region on the other end side becomes the N pole.
  • the permanent magnet 132A on the second facing part 133B side causes the second facing part 133B to have a north pole in one end region in the axis R direction and a north pole in the other end region in the axis R direction.
  • the region on the end side becomes the south pole.
  • the movable magnetic pole portion 132 is arranged in a ring shape around the axis R.
  • the movable magnetic pole portion 132 is made of a magnetic material.
  • the movable magnetic pole portion 132 is disposed within the coil 31 between the first opposing portion 133A and the second opposing portion 133B.
  • the movable magnetic pole part 132 is arranged to be movable in the direction of the axis R.
  • a pair of permanent magnets 132A are provided within the movable magnetic pole portion 132.
  • One permanent magnet 132A is arranged at one end of the movable magnetic pole part 132 facing the first facing part 133A and the other end facing the second facing part 133B.
  • One end and the other end of the movable magnetic pole part 132 are predetermined parts of the movable magnetic pole part 132. That is, the first opposing portion 133A and the second opposing portion 133B are arranged with a predetermined portion of the movable magnetic pole portion 132 interposed therebetween.
  • These permanent magnets 132A are arranged such that their two magnetic poles (S pole and N pole) are lined up in the axis R direction. Furthermore, these permanent magnets 132A are arranged with the same magnetic poles facing each other. For example, these permanent magnets 132A are arranged inward so that their north poles face each other, and are arranged outward so that their south poles face oppositely to each other in the axis R direction.
  • the movable magnetic pole part 132 is held by the permanent magnet 132A in a state where it is magnetically attracted to either the first facing part 133A or the second facing part 133B.
  • Ru the permanent magnet 132A may be placed outside the movable magnetic pole portion 132.
  • a configuration can be considered in which the first opposing portion 133A and the second opposing portion 133B are provided.
  • the movable magnetic pole portion 132, the first opposing portion 133A, and the second opposing portion 133B become magnetic due to the magnetic field generated in the coil 31.
  • the opposite direction Pd1 a current flows in the coil 31 in the direction Pd1 opposite to the predetermined direction (hereinafter also simply referred to as the opposite direction Pd1)
  • the movable magnetic pole part 132, the first opposing part 133A, and the second opposing part 133B move in the direction of the axis R.
  • the region on one end side becomes the north pole, and the region on the other end side in the direction of the axis R becomes the south pole (see FIG. 2).
  • the first opposing portion 133A repels the permanent magnet 132A on the one end side of the movable magnetic pole portion 132.
  • the second opposing portion 133B attracts the permanent magnet 132A on the other end side of the movable magnetic pole portion 132. Then, the movable magnetic pole part 132 is repelled by the first opposing part 133A, is attracted to the second opposing part 133B, and moves toward the second opposing part 133B.
  • the solenoid 130 is configured such that in response to the current flowing in the opposite direction Pd1 through the coil 31, a force is applied to the movable magnetic pole part in a direction that causes the other end (predetermined part) of the movable magnetic pole part 132 to approach the second opposing part 133B. 132.
  • the movable magnetic pole part 132, the first opposing part 133A, and the second opposing part 133B have an S pole in the region on one end side in the axis R direction, and The region on the other end side becomes the north pole (see FIG. 3). Since one end side of the second opposing portion 133B becomes the S pole, the second opposing portion 133B repels the permanent magnet 132A on the other end side of the movable magnetic pole portion 132. On the other hand, since the other end side of the first opposing part 133A becomes the north pole, the first opposing part 133A attracts the permanent magnet 132A on the one end side of the movable magnetic pole part 132.
  • the movable magnetic pole part 132 is repelled by the second facing part 133B, is attracted to the first facing part 133A, and moves toward the first facing part 133A.
  • the solenoid 130 applies a force to the movable magnetic pole portion 132 in a direction that causes one end (predetermined portion) of the movable magnetic pole portion 132 to approach the first opposing portion 133A in response to the current flowing in the predetermined direction Pd2 through the coil 31.
  • the movable magnetic pole part 132 moves in the direction approaching the facing part 133 and in the direction away from the facing part 133 (in one direction and the other direction of the axis R) within the coil 31, depending on the direction of the current flowing through the coil 31.
  • the predetermined direction Pd2 here is a direction from one end of the coil 31 to the other end, and is a direction from the first connection point Cp1 of the switching section 74 to the second connection point Cp2 via the coil 31.
  • the reverse direction Pd1 is a direction from the other end of the coil 31 to one end, and is a direction from the second connection point Cp2 of the switching section 74 to the first connection point Cp1 via the coil 31.
  • the movable magnetic pole portion 132 is disposed integrally connected to the central portion of the rod 35 in the longitudinal direction.
  • the rod 35 is movable in the direction of the axis R together with the movable magnetic pole part 132.
  • One end of the rod 35 protrudes to the outside of the coil 31 regardless of the position of the movable magnetic pole part 132 within the coil 31.
  • a permanent magnet 35A is attached to one end of the rod 35 that projects outward from one end of the coil 31.
  • the switching unit 74 supplies a DC current supplied from a power supply unit 90, which is a DC power source, to the coil 31 so as to flow in either the opposite direction Pd1 or the predetermined direction Pd2.
  • the switching unit 74 includes a first switch element 74A, a second switch element 74B, a third switch element 74C, and a fourth switch element 74D (hereinafter also referred to as switch elements 74A, 74B, 74C, and 74D) connected in a full bridge. It has a configuration.
  • MOSFETs Metal Oxide Semiconductor Field Effect Transistors
  • the first switch element 74A and the second switch element 74B are connected in series between the conductive path 91 that inputs the input voltage to the switching section 74 and the reference conductive path 92, and are electrically connected to each other at the first connection point Cp1. is connected to.
  • the third switch element 74C and the fourth switch element 74D are connected in series between the conductive path 91 and the reference conductive path 92, and are electrically connected to each other at the second connection point Cp2.
  • One end of the coil 31 is electrically connected to the first connection point Cp1.
  • the other end of the coil 31 is electrically connected to the second connection point Cp2.
  • the detection unit 75 includes a detection unit 71 and a calculation unit 172A provided in the control unit 172.
  • the calculation unit 172A is configured to be able to calculate the magnitude and direction of the magnetism of the permanent magnet 35A of the rod 35 detected by the detection unit 71 by dividing it into three mutually orthogonal directions.
  • the calculation unit 172A is configured to be able to calculate the amount of change in the magnetic magnitude and direction of the permanent magnet 35A detected by the detection unit 71 at predetermined time intervals.
  • the calculation unit 172A calculates the magnitude and direction of the magnetism detected by the detection unit 71 by dividing it into three mutually orthogonal directions, and based on the amount of change in these, the rod 35 provided with the permanent magnet 35A moves.
  • the detection unit 71 detects the amount of change in the magnetic magnitude and direction of the permanent magnet 35A as zero. Further, when the rod 35 moves, the detection unit 71 detects the amount of change in the magnetic magnitude and direction of the permanent magnet 35A as a non-zero value. For example, the detection unit 75 detects the start of movement of the movable magnetic pole portion 132 by detecting that the amount of displacement changes from 0 to a non-zero value.
  • a predetermined movement threshold Vth is stored as a fixed value in the ROM 172B of the control unit 172.
  • the control unit 172 is configured to be able to determine whether or not the rod 35 is moving based on the amount of change in the magnetic magnitude and direction of the permanent magnet 35A detected by the detection unit 71 and the movement threshold Vth. ing. For example, the control unit 172 determines that the rod 35 has not moved when the amount of change is less than or equal to the movement threshold Vth, and determines that the rod 35 has not moved when the amount of change is greater than the movement threshold Vth. It is determined that there is.
  • the control unit 172 is configured to output a drive signal Ds1 to the switching unit 74 when a drive command signal C1 is input from an external ECU (not shown) or the like.
  • the drive signal Ds1 is PWM with a duty that causes a current in the opposite direction Pd1 to flow through the coil 31.
  • the control section 172 outputs the drive signal Ds1 to the switching section 74, the on/off operation of each switch element 74A, 74B, 74C, 74D of the switching section 74 is controlled, and a current in the opposite direction Pd1 flows through the coil 31.
  • the control unit 172 is configured to output a drive signal Ds2 to the switching unit 74 when the drive command signal C2 is input from an external ECU (not shown) or the like.
  • the drive signal Ds2 is a PWM duty signal that causes a current to flow in a predetermined direction Pd2 through the coil 31.
  • the control section 172 outputs the drive signal Ds2 to the switching section 74, the on/off operation of each switch element 74A, 74B, 74C, 74D of the switching section 74 is controlled, and a current flows in the coil 31 in a predetermined direction Pd2. In this way, the control unit 172 controls the current flowing through the coil 31.
  • the control unit 172 receives the drive command signal C1 or C2 until the movable magnetic pole part 132 moves in a direction away from the facing part 133 (either the first facing part 133A or the second facing part 133B).
  • current increase control is executed.
  • the current increase control is a control that adjusts the current flowing through the coil 31 so that the current flowing through the coil 31 gradually increases at a constant rate.
  • Gradually increasing at a constant rate means, for example, that the current increase amount ⁇ I of a predetermined magnitude increases every unit time.
  • the magnetic strength of the movable magnetic pole section 132, the first opposing section 133A, and the second opposing section 133B gradually increases at a constant rate in proportion to this. becomes larger.
  • the initial period is a period during which the arithmetic unit 172A determines that the rod 35 is not moving. This is until the start is detected.
  • the magnitude (N1 (A)) of the current flowing through the coil 31 is such that the magnetism imparted to the first opposing portion 133A by the coil 31 does not repel the magnetic force of the permanent magnet 132A on the side closer to the first opposing portion 133A.
  • the size is such that the facing portion 133A and the movable magnetic pole portion 132 are kept attracted to each other by the magnetic force of the permanent magnet 132A.
  • control unit 172 continues adjusting the drive signal Ds1 so that the magnitude of the current flowing through the coil 31 gradually increases at a constant rate.
  • the magnitude of the current flowing through the coil 31 gradually increases from N1 (A) at a constant rate.
  • the magnetism of the movable magnetic pole portion 132 gradually increases at a constant rate. Then, at time T2, the magnitude of the current flowing through the coil 31 becomes N2 (A), and the magnetism of the first opposing part 133A at this time is repelled by the magnetic force of the permanent magnet 132A on the side closer to the first opposing part 133A. It will be the size that it will be. Then, the movable magnetic pole part 132 is repelled by the first facing part 133A, is attracted to the second facing part 133B, and starts moving toward the second facing part 133B.
  • the detection section 75 detects that the movable magnetic pole section 132 has started moving toward the second opposing section 133B. Then, the control unit 172 ends the current increase control based on the detection result of the detection unit 75.
  • the period from time T1 to time T2 is an initial period.
  • control unit 172 can perform a different type of current control that is different from the current increase control. For example, a method may be considered in which the magnitude of the current flowing through the coil 31 is controlled so that the movable magnetic pole part 132 does not accelerate excessively toward the second opposing part 133B. The movable magnetic pole part 132 is attracted to the second opposing part 133B by the magnetic force of the permanent magnet 132A.
  • the magnitude of the current flowing through the coil 31 (N3(A)) is such that the magnetism imparted to the second opposing portion 133B by the coil 31 does not repel the magnetic force of the permanent magnet 132A on the side closer to the second opposing portion 133B.
  • the size is such that the facing portion 133B and the movable magnetic pole portion 132 are kept attracted to each other by the magnetic force of the permanent magnet 132A.
  • control unit 172 continues adjusting the drive signal Ds2 so that the magnitude of the current flowing through the coil 31 gradually increases at a constant rate.
  • the control unit 172 continues adjusting the drive signal Ds2 so that the magnitude of the current flowing through the coil 31 gradually increases at a constant rate.
  • the magnitude of the current flowing through the coil 31 gradually increases from N3(A) at a constant rate.
  • the magnetism of the movable magnetic pole portion 132 gradually increases at a constant rate. Then, at time T4, the magnitude of the current flowing through the coil 31 becomes N4 (A), and the magnetism of the second opposing part 133B at this time is repelled by the magnetic force of the permanent magnet 132A on the side closer to the second opposing part 133A. It will be the size that it will be. Then, the movable magnetic pole part 132 is repelled by the second facing part 133B, is attracted to the first facing part 133A, and starts moving toward the first facing part 133A. At time T4, the detection section 75 detects that the movable magnetic pole section 132 has started moving toward the first opposing section 133A. Then, the control unit 172 ends the current increase control based on the detection result of the detection unit 75. The period from time T3 to time T4 is an initial period.
  • control unit 172 can perform a different type of current control that is different from the current increase control. For example, a method may be considered in which the magnitude of the current flowing through the coil 31 is controlled so that the movable magnetic pole section 132 does not accelerate excessively toward the first opposing section 133A. The movable magnetic pole part 132 is attracted to the first opposing part 133A by the magnetic force of the permanent magnet 132A.
  • the solenoid control device 170 includes a coil 31, a movable magnetic pole part 132, and a facing part 133, and is a solenoid in which the movable magnetic pole part 132 is displaced so as to move in a direction toward the facing part 133 and a direction away from the facing part 133. 130 is to be controlled.
  • the solenoid control device 170 includes a control section 172 that controls the current flowing through the coil 31.
  • the control unit 172 controls a current that adjusts the current flowing through the coil 31 so that the value of the current flowing through the coil 31 gradually increases during an initial period until the movable magnetic pole portion 132 starts moving in a direction away from the opposing portion 133. Execute climb control. According to this configuration, rapid acceleration of the movable magnetic pole portion 132 can be avoided.
  • the solenoid control device 170 includes a detection unit 75 that detects the start of movement of the movable magnetic pole portion 132. During an initial period, from the time when current supply to the coil 31 is started, the detection unit 75 detects the start of movement of the movable magnetic pole portion 132. This is until the start is detected.
  • the control unit 172 executes current increase control in the initial period. According to this configuration, since the current increase control is performed in the initial period, the control unit 172 can reliably separate and execute current control in the initial period and a period after the initial period. .
  • the facing part 133 and the movable magnetic pole part 132 are attracted by magnetic force. Since the facing part 133 and the movable magnetic pole part 132 are attracted to each other by magnetic force, in order to separate the movable magnetic pole part 132 from the facing part 133, it is necessary to move the facing part 133 and the movable magnetic pole part 132 in the opposite direction to the attracting force. It is necessary to apply an external force greater than the attraction force to the movable magnetic pole portion 132. In such a case, if an external force larger than the attraction force is suddenly applied, the movable magnetic pole part 132 suddenly starts moving away from the opposing part 133.
  • the control portion 172 adjusts the current flowing through the coil 31 so that the value of the current flowing through the coil 31 gradually increases. do. Therefore, it is possible to avoid sudden application of an external force greater than the attraction force to the movable magnetic pole part 132, and to easily suppress the movable magnetic pole part 132 from suddenly moving away from the opposing part 133.
  • a solenoid control device 270 according to a second embodiment will be described with reference to FIGS. 6 to 10.
  • the solenoid 230 that is controlled by the solenoid control device 270 has no second facing portion, a housing portion 236, a compression coil spring 234, and a movable portion.
  • the configuration of the magnetic pole portion 232 and the like are different from the second embodiment.
  • the solenoid control device 270 of the second embodiment differs from the first embodiment in the operation of the control section 272 and the like.
  • the same components as in the first embodiment are denoted by the same reference numerals, and descriptions of the same functions and effects as in the first embodiment will be omitted.
  • FIG. 6 illustrates a solenoid control system 200 provided with a solenoid control device 270 according to the second embodiment.
  • the solenoid 230 includes a coil 31, a first opposing portion 133A, a movable magnetic pole portion 232, a rod 35, a housing portion 236, and a compression coil spring 234.
  • the movable magnetic pole section 232 has a movable magnetic pole main body section 232A and a presser plate section 232B.
  • the movable magnetic pole main body portion 232A is made of a magnetic material.
  • the movable magnetic pole main body portion 232A is arranged in a ring shape around the axis R within the coil 31.
  • a permanent magnet 132A is provided inside the movable magnetic pole main body 232A.
  • the permanent magnet 132A is arranged such that its two magnetic poles (S pole and N pole) are aligned in the axis R direction.
  • the permanent magnet 132A may be arranged outside the movable magnetic pole main body 232A. For example, a configuration may be considered in which it is provided within the first opposing portion 133A.
  • the holding plate portion 232B has an annular shape around the axis R, and is arranged outside the coil 31.
  • the movable magnetic pole main body portion 232A and the presser plate portion 232B are arranged in the direction of the axis R with the first opposing portion 133A interposed therebetween.
  • the movable magnetic pole portion 232 is arranged to be movable in the direction of the axis R.
  • the movable magnetic pole main body portion 232A is disposed integrally connected to the central portion of the rod 35 in the longitudinal direction.
  • the presser plate portion 232B is disposed integrally connected to the other end of the rod 35 in the length direction.
  • the rod 35 is disposed so as to be movable in the direction of the axis R together with the movable magnetic pole body 232A and the presser plate 232B.
  • the housing portion 236 is provided adjacent to the coil 31 in the direction of the axis R.
  • the other end of the rod 35 passes through the accommodating portion 236, and the holding plate portion 232B is accommodated therein.
  • the compression coil spring 234 is disposed inside the housing portion 236 on the opposite side of the first opposing portion 133A with the presser plate portion 232B interposed therebetween.
  • the direction of expansion and contraction of the compression coil spring 234 is along the axis R.
  • the compression coil spring 234 is oriented along the axis R, and is configured to always apply an external force to the presser plate portion 232B in a direction that brings the presser plate portion 232B closer to the first opposing portion 133A.
  • the solenoid 230 is configured to apply an external force to the movable magnetic pole portion 232 in a direction that causes the presser plate portion 232B (predetermined portion) to approach the first opposing portion 133A.
  • the compression coil spring 234 is housed in the housing portion 236 in a compressed state in the expansion/contraction direction (that is, in a state that is shorter than its free length). Therefore, the compression coil spring 234 always generates an elastic force in the extension direction, and this elastic force is always applied as an external force to the presser plate portion 232B.
  • the presser plate portion 232B when the presser plate portion 232B is in contact with the first opposing portion 133A (see FIG. 7), the external force applied by the compression coil spring 234 to the presser plate portion 232B is minimized.
  • the holding plate part 232B is at the farthest position from the first opposing part 133A (see FIG. 8) (that is, when the compression coil spring 234 is in the most compressed state), the compression coil spring 234 is placed in the holding plate part 232B. The applied external force becomes maximum.
  • the control unit 272 is configured to output a drive signal Ds2 to the switching unit 74 when a drive command signal C2 is input from an external ECU (not shown) or the like.
  • the control section 272 outputs the drive signal Ds2 to the switching section 74, the on/off operation of each switch element 74A, 74B, 74C, 74D of the switching section 74 is controlled, and a current flows in the coil 31 in a predetermined direction Pd2.
  • the elastic force (external force) applied by the compression coil spring 234 to the holding plate section 232B causes the movable magnetic pole main body section 232A to move farthest away from the first opposing section 133A.
  • the distanced state is maintained at the remote position (see FIG. 7).
  • the drive command signal C2 is not input to the control unit 272
  • no current flows through the coil 31.
  • the movable magnetic pole main body portion 232A and the first opposing portion 133A are not magnetized.
  • the control unit 272 increases the current flowing through the coil 31 gradually at a constant rate while the drive command signal C2 is input and the calculation unit 172A determines that the rod 35 is not moving. Execute control.
  • the current flowing through the coil 31 is gradually increased at a constant rate, the magnetic strength of the movable magnetic pole main body portion 232A and the first opposing portion 133A is also gradually increased at a constant rate in proportion to this.
  • the movable magnetic pole main body portion 232A is held at the farthest position from the first opposing portion 133A (see FIG. 7).
  • the presser plate portion 232B is pressed by the compression coil spring 234 and is held in contact with the first opposing portion 133A.
  • the drive command signal C2 is input to the control section 272 at time T5 shown in FIG.
  • the control section 172 outputs a drive signal Ds2, which is adjusted to cause a current of N5 (A) in magnitude to flow through the coil 31 in a predetermined direction Pd2, to the switching section 74.
  • the control unit 272 starts current increase control at time T5.
  • a force is applied to the movable magnetic pole main body portion 232A to draw it toward the first opposing portion 133A.
  • the force applied to the movable magnetic pole main body part 232A to be attracted to the first opposing part 133A is slightly smaller than the elastic force (external force) applied by the compression coil spring 234 to the presser plate part 232B. Therefore, even if a current having a magnitude of N5 (A) flows through the coil 31 in the predetermined direction Pd2, the movable magnetic pole main body portion 232A does not move toward the first opposing portion 133A.
  • control unit 272 continues adjusting the drive signal Ds2 so that the magnitude of the current value flowing through the coil 31 gradually increases at a constant rate.
  • the control unit 272 continues adjusting the drive signal Ds2 so that the magnitude of the current value flowing through the coil 31 gradually increases at a constant rate.
  • the magnitude of the current flowing through the coil 31 gradually increases from N5 (A) at a constant rate.
  • the magnetism of the movable magnetic pole main body portion 232A gradually increases at a constant rate. Then, at time T6, the magnitude of the current flowing through the coil 31 becomes N6 (A), and at this time, the force applied to the movable magnetic pole main body part 232A to be attracted to the first opposing part 133A is suppressed by the compression coil spring 234. This is larger than the elastic force (external force) applied to the plate portion 232B. Then, the movable magnetic pole main body portion 232A is attracted to the first opposing portion 133A and starts moving toward the first opposing portion 133A. At this time, the detection section 75 detects that the movable magnetic pole main body section 232A has started moving toward the first opposing section 133A. Then, the control unit 272 ends the current increase control based on the detection result of the detection unit 75.
  • the control unit 272 can perform a different type of current control that is different from the current increase control. For example, a method may be considered in which the magnitude of the current flowing through the coil 31 is controlled so that the movable magnetic pole main body portion 232A does not excessively accelerate toward the first opposing portion 133A.
  • the movable magnetic pole body 232A is magnetically attracted to the first opposing portion 133A.
  • the drive command signal C2 continues to be input to the control portion 272. As a result, the state in which the movable magnetic pole main body portion 232A and the first opposing portion 133A are attracted by magnetic force is maintained.
  • the control unit 272 starts current reduction control to continue adjusting the drive signal Ds2 so that the magnitude of the current value flowing through the coil 31 gradually decreases at a constant rate.
  • the magnitude of the current flowing through the coil 31 gradually decreases from N7(A) at a constant rate.
  • the magnetism of the movable magnetic pole main body portion 232A and the first opposing portion 133A gradually decreases at a constant rate. Then, at time T8, the magnitude of the current flowing through the coil 31 becomes N8 (A). At this time, the force applied to the movable magnetic pole main body part 232A to be attracted to the first opposing part 133A is greater than the elastic force (external force) applied to the presser plate part 232B when the compression coil spring 234 is most compressed in the expansion/contraction direction. becomes smaller.
  • the movable magnetic pole main body portion 232A starts moving in the direction away from the first opposing portion 133A.
  • the detection section 75 detects that the movable magnetic pole main body section 232A has started moving in the direction away from the first opposing section 133A.
  • the control section 272 ends the current lowering control based on the detection result of the detection section 75.
  • the period from time T7 to time T8 is an initial period.
  • the current supplied from the drive unit to the coil may be changed in steps. Furthermore, a configuration may be added to the configurations of Embodiments 1 and 2 in which the current supplied from the drive unit to the coil is changed in stages.
  • control unit is mainly configured with a microcomputer, but it may be realized with a plurality of hardware circuits other than the microcomputer.
  • an infrared sensor may be used as the detection section. This eliminates the need to provide a magnet on the rod.
  • the direction of the magnetic poles of the permanent magnet provided in the movable magnetic pole part and the direction of the magnetic poles in the opposing part may be opposite to the axial direction.
  • a permanent magnet having a magnetic pole in a direction to draw the movable magnetic pole body to the other end of the coil, or an external force in a direction to move the movable magnetic pole body to the other end of the coil is used.
  • a tension coil spring may be arranged to provide the following.
  • a buffer material may be provided between the movable magnetic pole part and the opposing part.
  • the current increase amount of the predetermined magnitude may be changed between a first value larger than 0 and a second value larger than the first value.
  • the current flowing through the coil may be changed from 0 (A) to gradually increase at a constant rate. Furthermore, while the current increase control is being executed, a section may be set in which the magnitude of the current flowing through the coil is not changed and maintained at a constant magnitude, or a zone in which the magnitude of the current flowing in the coil is reduced. That is, it is not necessary to gradually increase the current flowing through the coil at a constant rate over the entire initial period.
  • the detection unit may be configured to detect the moving speed of the rod.
  • a feedback calculation method such as a PI calculation method or a PID calculation method may be employed while controlling the magnitude of the current flowing through the coil so as to reach the target current value.
  • Switching section 74A First switch element (switch element) 74B...Second switch element (switch element) 74C...Third switch element (switch element) 74D...Fourth switch element (switch element) 75...Detection section 90...Power supply section 91...Conducting path 92...Reference conducting path 100, 200...Solenoid control system 130, 230...Solenoid 132, 232...Movable magnetic pole section 132A...Permanent magnet 133...Opposing section 133A...First opposing section (opposite part) 133B...Second opposing part (opposing part) 170, 270...
  • Solenoid control device 172 272... Control section 172A... Arithmetic section 172B... ROM 232A...Movable magnetic pole body part 232B...Press plate part 234...Compression coil spring 236...Accommodating parts C1, C2...Drive command signal Cp1...First connection point Cp2...Second connection point Ds1, Ds2...Drive signal Pd1...Reverse direction Pd2... Predetermined direction R...axis line Vth...movement threshold

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Abstract

Provided is a solenoid control device capable of performing control to suppress generation of loud sound from a solenoid.　A solenoid control device (170) controls a solenoid (130) that comprises a coil (31), a movable magnetic pole portion (132), and an opposing portion (133). The movable magnetic pole portion (132) is displaced so as to be moved in a direction toward the opposing portion (133) or a direction away from the opposing portion (133). The solenoid control device (170) comprises a control unit (172) that controls a current delivered to the coil (31). The control unit (172) performs a current-increasing control to adjust the current that flows through the coil (31) so that the value of the current through the coil (31) gradually increases in an initial period before the movable magnetic pole portion (132) starts to move in the direction away from the opposing portion (133).

Description

ソレノイド制御装置solenoid control device
　本開示は、ソレノイド制御装置に関する。 The present disclosure relates to a solenoid control device.
　特許文献１には、ソレノイドを用いて電動押圧装置を駆動するモータの回転を抑制する手法が開示されている。 Patent Document 1 discloses a method of suppressing the rotation of a motor that drives an electric pressing device using a solenoid.
特開２０１２－１９３８０２号公報Japanese Patent Application Publication No. 2012-193802 特開２００９－２４７２４号公報JP2009-24724A
　ソレノイドは、コイルに電流を流して固定磁極を磁化させ、可動磁極を引き寄せることによって動力を発生させる。ソレノイドは、コイルに連続して電流を流し続けると、可動磁極を加速し続けることになり、固定磁極に可動磁極が勢いよく衝突し、その結果大きな衝突音が生じてしまう。 A solenoid generates power by passing current through a coil to magnetize a fixed magnetic pole and attracting a movable magnetic pole. If a solenoid continues to apply current to the coil, it will continue to accelerate the movable magnetic pole, causing the movable magnetic pole to collide with the fixed magnetic pole, resulting in a loud collision noise.
　本開示は、上記のような事情に基づいて完成されたものであって、ソレノイドから大きな音が生じることを抑えた制御をすることができるソレノイド制御装置を提供することを目的とする。 The present disclosure was completed based on the above-mentioned circumstances, and an object of the present disclosure is to provide a solenoid control device that can perform control while suppressing loud noises from the solenoid.
　本開示のソレノイド制御装置は、
　コイルと可動磁極部と対向部とを有するとともに、前記対向部に接近する方向及び前記対向部から離間する方向に移動するように前記可動磁極部が変位するソレノイドを制御対象とするソレノイド制御装置であって、
　前記コイルに流す電流を制御する制御部を有し、
　前記制御部は、前記可動磁極部が前記対向部から離間する方向に移動を開始するまでの初期期間において、前記コイルに流れる電流値が徐々に大きくなるように前記コイルに流れる電流を調整する電流上昇制御を実行する。 The solenoid control device of the present disclosure includes:
A solenoid control device that controls a solenoid that has a coil, a movable magnetic pole part, and a facing part, and in which the movable magnetic pole part is displaced so as to move in a direction toward the facing part and in a direction away from the facing part. There it is,
comprising a control unit that controls the current flowing through the coil,
The control unit adjusts the current flowing through the coil so that the value of the current flowing through the coil gradually increases during an initial period until the movable magnetic pole part starts moving in a direction away from the opposing part. Execute climb control.
　本開示によれば、ソレノイドから大きな音が生じることを抑えた制御をすることができる。 According to the present disclosure, control can be performed to suppress generation of loud noise from the solenoid.
図１は、実施形態１のソレノイド制御装置、及び制御対象であるソレノイドの構成を示す概略図である。FIG. 1 is a schematic diagram showing the configuration of a solenoid control device according to a first embodiment and a solenoid to be controlled. 図２は、実施形態１のソレノイドの概略図であって、第１対向部に可動磁極部が吸着した状態を示す。FIG. 2 is a schematic diagram of the solenoid according to the first embodiment, showing a state in which the movable magnetic pole part is attracted to the first opposing part. 図３は、実施形態１のソレノイドの概略図であって、第２対向部に可動磁極部が吸着した状態を示す。FIG. 3 is a schematic diagram of the solenoid according to the first embodiment, showing a state in which the movable magnetic pole part is attracted to the second opposing part. 図４は、第１対向部に可動磁極部が吸着している状態における、コイルに流れる電流の大きさ、演算部において把握された可動磁極部の変位量、外部ＥＣＵから制御部に入力する駆動信号の変化を示すタイミングチャートである。FIG. 4 shows the magnitude of the current flowing through the coil when the movable magnetic pole part is attracted to the first opposing part, the amount of displacement of the movable magnetic pole part ascertained by the calculation unit, and the drive input from the external ECU to the control unit. 5 is a timing chart showing changes in signals. 図５は、第２対向部に可動磁極部が吸着している状態における、コイルに流れる電流の大きさ、演算部において把握された可動磁極部の変位量、外部ＥＣＵから制御部に入力する駆動信号の変化を示すタイミングチャートである。FIG. 5 shows the magnitude of the current flowing through the coil when the movable magnetic pole part is attracted to the second opposing part, the amount of displacement of the movable magnetic pole part ascertained by the calculation unit, and the drive input from the external ECU to the control unit. 5 is a timing chart showing changes in signals. 図６は、実施形態２のソレノイド制御装置、及び制御対象であるソレノイドの構成を示す概略図である。FIG. 6 is a schematic diagram showing the configuration of a solenoid control device according to the second embodiment and a solenoid to be controlled. 図７は、実施形態２のソレノイドの概略図であって、第１対向部から可動磁極本体部が最も遠ざかった状態を示す。FIG. 7 is a schematic diagram of the solenoid according to the second embodiment, showing a state in which the movable magnetic pole main body is farthest from the first opposing portion. 図８は、実施形態２のソレノイドの概略図であって、第１対向部に可動磁極本体部が吸着した状態を示す。FIG. 8 is a schematic diagram of the solenoid according to the second embodiment, showing a state in which the movable magnetic pole main body is attracted to the first opposing part. 図９は、第１対向部から可動磁極本体部が最も遠ざかっている状態における、コイルに流れる電流の大きさ、演算部において把握された可動磁極本体部の変位量、外部ＥＣＵから制御部に入力する駆動信号の変化を示すタイミングチャートである。FIG. 9 shows the magnitude of the current flowing through the coil in the state where the movable magnetic pole body is the farthest away from the first opposing part, the amount of displacement of the movable magnetic pole body detected by the calculation unit, and input from the external ECU to the control unit. 3 is a timing chart showing changes in a drive signal. 図１０は、第１対向部に可動磁極本体部が吸着している状態における、コイルに流れる電流の大きさ、演算部において把握された可動磁極本体部の変位量、外部ＥＣＵから制御部に入力する駆動信号の変化を示すタイミングチャートである。FIG. 10 shows the magnitude of the current flowing through the coil when the movable magnetic pole body is attracted to the first opposing part, the amount of displacement of the movable magnetic pole body detected by the calculation unit, and input from the external ECU to the control unit. 3 is a timing chart showing changes in a drive signal.
　以下では、本開示の実施形態が列記されて例示される。なお、以下で示す〔１〕から〔３〕の特徴は、矛盾しない態様でどのように組み合わせてもよい。 Below, embodiments of the present disclosure are listed and illustrated. Note that the features [1] to [3] shown below may be combined in any manner consistent with each other.
　〔１〕本開示のソレノイド制御装置は、コイルと可動磁極部と対向部とを有するとともに、対向部に接近する方向及び対向部から離間する方向に移動するように可動磁極部が変位するソレノイドを制御対象とする。このソレノイド制御装置は、コイルに流す電流を制御する制御部を有している。制御部は、可動磁極部が対向部から離間する方向に移動を開始するまでの初期期間において、コイルに流れる電流値が徐々に大きくなるようにコイルに流れる電流を調整する電流上昇制御を実行する。 [1] The solenoid control device of the present disclosure includes a coil, a movable magnetic pole portion, and an opposing portion, and includes a solenoid in which the movable magnetic pole portion is displaced so as to move in a direction toward the opposing portion and a direction away from the opposing portion. Controlled. This solenoid control device includes a control section that controls the current flowing through the coil. The control unit executes current increase control to adjust the current flowing through the coil so that the value of the current flowing through the coil gradually increases during an initial period until the movable magnetic pole part starts moving in a direction away from the opposing part. .
　上記〔１〕のソレノイド制御装置は、可動磁極部が急激に加速することを避けることができる。 The solenoid control device of [1] above can avoid rapid acceleration of the movable magnetic pole portion.
　〔２〕上記〔１〕のソレノイド制御装置は、可動磁極部の移動の開始を検出する検知部を有し得る。初期期間は、コイルへの電流供給を開始する時から、検知部が可動磁極部の移動開始を検出する時までの間であり、制御部は、初期期間において電流上昇制御を実行し得る。 [2] The solenoid control device of [1] above may include a detection unit that detects the start of movement of the movable magnetic pole portion. The initial period is from the time when current supply to the coil is started until the time when the detection section detects the start of movement of the movable magnetic pole section, and the control section can execute current increase control during the initial period.
　上記〔２〕のソレノイド制御装置は、初期期間において電流上昇制御を行う構成であるので、制御部は、初期期間と、初期期間よりも後の期間と、における電流制御を確実に切り分けて実行することができる。 Since the solenoid control device in [2] above is configured to perform current increase control in the initial period, the control unit reliably separates and executes current control in the initial period and the period after the initial period. be able to.
　〔３〕上記〔１〕又は〔２〕のソレノイド制御装置において、可動磁極部が移動を開始する前には、対向部と可動磁極部とが磁力によって吸着し得る。 [3] In the solenoid control device of [1] or [2] above, before the movable magnetic pole part starts moving, the opposing part and the movable magnetic pole part can be attracted by magnetic force.
　対向部と可動磁極部とは磁力によって吸着しているので、可動磁極部を対向部から引き離すには、対向部と可動磁極部とが吸着する吸着力と反対の向きに吸着力よりも大きな外力を可動磁極部に付与する必要がある。こうした場合、吸着力よりも大きい外力を突然に加えると、可動磁極部は、突然に対向部から離れるように移動を開始する。上記〔３〕のソレノイド制御装置は、対向部と可動磁極部とが磁力によって吸着している構成の場合、制御部がコイルに流れる電流値を徐々に大きくなるようにコイルに流れる電流を調整する。このため、可動磁極部に吸着力よりも大きい外力が突然に加わることを避け、可動磁極部が対向部から突然に離れるように移動することを抑制し易い。 Since the facing part and the movable magnetic pole part are attracted by magnetic force, in order to separate the movable magnetic pole part from the facing part, an external force greater than the attracting force must be applied in the opposite direction to the attracting force that attracts the facing part and the movable magnetic pole part. It is necessary to apply this to the movable magnetic pole part. In such a case, if an external force larger than the attraction force is suddenly applied, the movable magnetic pole part suddenly starts moving away from the opposing part. In the solenoid control device of [3] above, when the opposing part and the movable magnetic pole part are attracted by magnetic force, the control part adjusts the current flowing through the coil so that the value of the current flowing through the coil gradually increases. . Therefore, it is possible to avoid sudden application of an external force greater than the attraction force to the movable magnetic pole portion, and to easily suppress the movable magnetic pole portion from suddenly moving away from the opposing portion.
［本開示の実施形態の詳細］ [Details of embodiments of the present disclosure]
＜実施形態１＞
　実施形態１に係るソレノイド制御装置１７０について、図１から図５を参照しつつ説明する。図１には、実施形態１に係るソレノイド制御装置１７０が設けられたソレノイド制御システム１００が例示される。ソレノイド制御システム１００は、ソレノイド制御装置１７０がソレノイド１３０の動作を制御するシステムである。ソレノイド１３０は、例えば、車両内に設けられアクチュエータとして機能する。ソレノイド制御システム１００は、ソレノイド１３０と、ソレノイド制御装置１７０と、を備えている。ソレノイド制御装置１７０は、検知部７５と、制御部１７２と、を有している。ソレノイド制御装置１７０の制御対象はソレノイド１３０である。 <Embodiment 1>
A solenoid control device 170 according to Embodiment 1 will be described with reference to FIGS. 1 to 5. FIG. 1 illustrates a solenoid control system 100 provided with a solenoid control device 170 according to the first embodiment. The solenoid control system 100 is a system in which a solenoid control device 170 controls the operation of the solenoid 130. For example, the solenoid 130 is provided in a vehicle and functions as an actuator. The solenoid control system 100 includes a solenoid 130 and a solenoid control device 170. The solenoid control device 170 includes a detection section 75 and a control section 172. The object to be controlled by the solenoid control device 170 is the solenoid 130 .
［ソレノイドの構成］
　図１に示すように、ソレノイド１３０は、コイル３１と、対向部１３３と、可動磁極部１３２と、ロッド３５と、を有している。コイル３１には、スイッチング部７４から電流が供給されるようになっている。ソレノイド１３０は、ソレノイド制御装置１７０の制御対象である。 [Solenoid configuration]
As shown in FIG. 1, the solenoid 130 includes a coil 31, a facing portion 133, a movable magnetic pole portion 132, and a rod 35. Current is supplied to the coil 31 from the switching section 74. Solenoid 130 is an object to be controlled by solenoid control device 170.
　対向部１３３は、第１対向部１３３Ａと、第２対向部１３３Ｂと、を有している。第１対向部１３３Ａは、コイル３１の一端部に軸線Ｒ周りに環状をなして配置されている。第１対向部１３３Ａは、コイル３１の一端部に配置され、コイル３１に対して固定されている。つまり、第１対向部１３３Ａは、固定磁極である。第１対向部１３３Ａの一部は、コイル３１内に配置されている。第１対向部１３３Ａは、磁性を有する材料で形成されている。 The facing part 133 has a first facing part 133A and a second facing part 133B. The first opposing portion 133A is arranged in an annular shape around the axis R at one end of the coil 31. The first opposing portion 133A is arranged at one end of the coil 31 and is fixed to the coil 31. In other words, the first opposing portion 133A is a fixed magnetic pole. A portion of the first opposing portion 133A is disposed within the coil 31. The first opposing portion 133A is made of a magnetic material.
　第２対向部１３３Ｂは、コイル３１の他端部に軸線Ｒ周りに環状をなして配置されている。第２対向部１３３Ｂは、コイル３１の他端部に配置され、コイル３１に対して固定されている。つまり、第２対向部１３３Ｂは、固定磁極である。第２対向部１３３Ｂの一部は、コイル３１内に配置されている。第２対向部１３３Ｂは、磁性を有する材料で形成されている。第１対向部１３３Ａと、第２対向部１３３Ｂとは、離間している。第１対向部１３３Ａと、第２対向部１３３Ｂとは、同一の形態をなしている。 The second opposing portion 133B is arranged in an annular shape around the axis R at the other end of the coil 31. The second opposing portion 133B is arranged at the other end of the coil 31 and is fixed to the coil 31. In other words, the second opposing portion 133B is a fixed magnetic pole. A portion of the second opposing portion 133B is disposed within the coil 31. The second opposing portion 133B is made of a magnetic material. 133 A of 1st opposing parts and the 2nd opposing part 133B are spaced apart. The first opposing portion 133A and the second opposing portion 133B have the same form.
　第１対向部１３３Ａ及び第２対向部１３３Ｂは、後述する可動磁極部１３２が接触して永久磁石１３２Ａが近づくことによって磁気を帯びる。例えば、第１対向部１３３Ａに可動磁極部１３２が接触すると、第１対向部１３３Ａ側の永久磁石１３２Ａによって第１対向部１３３Ａは、軸線Ｒ方向の一端側の領域がＳ極、軸線Ｒ方向の他端側の領域がＮ極になる。第２対向部１３３Ｂに可動磁極部１３２が接触すると、第２対向部１３３Ｂ側の永久磁石１３２Ａによって、第２対向部１３３Ｂは、軸線Ｒ方向の一端側の領域がＮ極、軸線Ｒ方向の他端側の領域がＳ極になる。 The first opposing portion 133A and the second opposing portion 133B become magnetic when a movable magnetic pole portion 132 (described later) comes into contact with them and a permanent magnet 132A approaches them. For example, when the movable magnetic pole part 132 comes into contact with the first opposing part 133A, the permanent magnet 132A on the first opposing part 133A side causes the first opposing part 133A to have an S pole in the region on one end side in the axis R direction and an S pole in the axis R direction. The region on the other end side becomes the N pole. When the movable magnetic pole part 132 comes into contact with the second facing part 133B, the permanent magnet 132A on the second facing part 133B side causes the second facing part 133B to have a north pole in one end region in the axis R direction and a north pole in the other end region in the axis R direction. The region on the end side becomes the south pole.
　可動磁極部１３２は、軸線Ｒ周りに環状をなして配置されている。可動磁極部１３２は、磁性を有する材料で形成されている。可動磁極部１３２は、コイル３１内であって、第１対向部１３３Ａと、第２対向部１３３Ｂとの間に配置されている。可動磁極部１３２は、軸線Ｒ方向に移動自在に配置されている。可動磁極部１３２内には、一対の永久磁石１３２Ａが設けられている。これら永久磁石１３２Ａは、可動磁極部１３２において、第１対向部１３３Ａに対向する一端部と、第２対向部１３３Ｂに対向する他端部とに一つずつ配置されている。可動磁極部１３２の一端部及び他端部は、可動磁極部１３２における所定部位である。つまり、第１対向部１３３Ａ及び第２対向部１３３Ｂは、可動磁極部１３２の所定部位を挟んで配置されている。これら永久磁石１３２Ａは、自身の２つの磁極（Ｓ極及びＮ極）が軸線Ｒ方向に並ぶ向きに配置されている。さらに、これら永久磁石１３２Ａは、同じ磁極同士を対向させて配置されている。例えば、これら永久磁石１３２Ａは、Ｎ極同士が対向するように内向きに配置され、Ｓ極同士が軸線Ｒ方向において互いに反対向きになるように外向きに配置されている。このため、コイル３１に電流が流れていない場合には、可動磁極部１３２は、永久磁石１３２Ａによって、第１対向部１３３Ａ、又は第２対向部１３３Ｂのいずれかに磁力によって吸着した状態で保持される。なお、永久磁石１３２Ａを可動磁極部１３２外に配置してもよい。例えば、第１対向部１３３Ａ、及び第２対向部１３３Ｂ内に設ける構成が考えられる。 The movable magnetic pole portion 132 is arranged in a ring shape around the axis R. The movable magnetic pole portion 132 is made of a magnetic material. The movable magnetic pole portion 132 is disposed within the coil 31 between the first opposing portion 133A and the second opposing portion 133B. The movable magnetic pole part 132 is arranged to be movable in the direction of the axis R. A pair of permanent magnets 132A are provided within the movable magnetic pole portion 132. One permanent magnet 132A is arranged at one end of the movable magnetic pole part 132 facing the first facing part 133A and the other end facing the second facing part 133B. One end and the other end of the movable magnetic pole part 132 are predetermined parts of the movable magnetic pole part 132. That is, the first opposing portion 133A and the second opposing portion 133B are arranged with a predetermined portion of the movable magnetic pole portion 132 interposed therebetween. These permanent magnets 132A are arranged such that their two magnetic poles (S pole and N pole) are lined up in the axis R direction. Furthermore, these permanent magnets 132A are arranged with the same magnetic poles facing each other. For example, these permanent magnets 132A are arranged inward so that their north poles face each other, and are arranged outward so that their south poles face oppositely to each other in the axis R direction. Therefore, when no current is flowing through the coil 31, the movable magnetic pole part 132 is held by the permanent magnet 132A in a state where it is magnetically attracted to either the first facing part 133A or the second facing part 133B. Ru. Note that the permanent magnet 132A may be placed outside the movable magnetic pole portion 132. For example, a configuration can be considered in which the first opposing portion 133A and the second opposing portion 133B are provided.
　コイル３１に電流が流れると、コイル３１に発生した磁場によって可動磁極部１３２、第１対向部１３３Ａ、及び第２対向部１３３Ｂは、磁気を帯びる。例えば、コイル３１に所定方向と逆方向Ｐd1（以下、単に逆方向Ｐd1ともいう）の電流が流れると、可動磁極部１３２、第１対向部１３３Ａ、及び第２対向部１３３Ｂは、軸線Ｒ方向の一端側の領域がＮ極になり、軸線Ｒ方向の他端側の領域がＳ極になる（図２参照）。第１対向部１３３Ａの他端側がＳ極になるので、第１対向部１３３Ａは、可動磁極部１３２の一端側の永久磁石１３２Ａと反発する。これに対して、第２対向部１３３Ｂの一端側がＮ極になるので、第２対向部１３３Ｂは、可動磁極部１３２の他端側の永久磁石１３２Ａと引き合う。すると、可動磁極部１３２は、第１対向部１３３Ａと反発するとともに、第２対向部１３３Ｂに引き寄せられ、第２対向部１３３Ｂ側に移動する。このように、ソレノイド１３０は、コイル３１に逆方向Ｐd1の電流が流れることに応じて可動磁極部１３２の他端部（所定部位）を第２対向部１３３Ｂに接近させる向きの力が可動磁極部１３２に生じる構成である。 When a current flows through the coil 31, the movable magnetic pole portion 132, the first opposing portion 133A, and the second opposing portion 133B become magnetic due to the magnetic field generated in the coil 31. For example, when a current flows in the coil 31 in the direction Pd1 opposite to the predetermined direction (hereinafter also simply referred to as the opposite direction Pd1), the movable magnetic pole part 132, the first opposing part 133A, and the second opposing part 133B move in the direction of the axis R. The region on one end side becomes the north pole, and the region on the other end side in the direction of the axis R becomes the south pole (see FIG. 2). Since the other end side of the first opposing portion 133A becomes the S pole, the first opposing portion 133A repels the permanent magnet 132A on the one end side of the movable magnetic pole portion 132. On the other hand, since one end side of the second opposing portion 133B becomes the north pole, the second opposing portion 133B attracts the permanent magnet 132A on the other end side of the movable magnetic pole portion 132. Then, the movable magnetic pole part 132 is repelled by the first opposing part 133A, is attracted to the second opposing part 133B, and moves toward the second opposing part 133B. In this manner, the solenoid 130 is configured such that in response to the current flowing in the opposite direction Pd1 through the coil 31, a force is applied to the movable magnetic pole part in a direction that causes the other end (predetermined part) of the movable magnetic pole part 132 to approach the second opposing part 133B. 132.
　そして、コイル３１に所定方向Ｐd2の電流が流れると、可動磁極部１３２、第１対向部１３３Ａ、及び第２対向部１３３Ｂは、軸線Ｒ方向の一端側の領域がＳ極になり、軸線Ｒ方向の他端側の領域がＮ極になる（図３参照）。第２対向部１３３Ｂの一端側がＳ極になるので、第２対向部１３３Ｂは、可動磁極部１３２の他端側の永久磁石１３２Ａと反発する。これに対して、第１対向部１３３Ａの他端側がＮ極になるので、第１対向部１３３Ａは、可動磁極部１３２の一端側の永久磁石１３２Ａと引き合う。すると、可動磁極部１３２は、第２対向部１３３Ｂと反発するとともに、第１対向部１３３Ａに引き寄せられ、第１対向部１３３Ａ側に移動する。このように、ソレノイド１３０は、コイル３１に所定方向Ｐd2の電流が流れることに応じて可動磁極部１３２の一端部（所定部位）を第１対向部１３３Ａに接近させる向きの力が可動磁極部１３２に生じる構成である。 Then, when a current in a predetermined direction Pd2 flows through the coil 31, the movable magnetic pole part 132, the first opposing part 133A, and the second opposing part 133B have an S pole in the region on one end side in the axis R direction, and The region on the other end side becomes the north pole (see FIG. 3). Since one end side of the second opposing portion 133B becomes the S pole, the second opposing portion 133B repels the permanent magnet 132A on the other end side of the movable magnetic pole portion 132. On the other hand, since the other end side of the first opposing part 133A becomes the north pole, the first opposing part 133A attracts the permanent magnet 132A on the one end side of the movable magnetic pole part 132. Then, the movable magnetic pole part 132 is repelled by the second facing part 133B, is attracted to the first facing part 133A, and moves toward the first facing part 133A. In this manner, the solenoid 130 applies a force to the movable magnetic pole portion 132 in a direction that causes one end (predetermined portion) of the movable magnetic pole portion 132 to approach the first opposing portion 133A in response to the current flowing in the predetermined direction Pd2 through the coil 31. This is the configuration that occurs in
　こうして、可動磁極部１３２は、コイル３１に流れる電流の向きに応じて、コイル３１内において、対向部１３３に接近する方向及び対向部１３３から離間する方向（軸線Ｒの一方向及び他方向）に変位する。ここでいう所定方向Ｐd2は、コイル３１の一端から他端に向かう方向であり、スイッチング部７４の第１接続点Ｃp1からコイル３１を介して第２接続点Ｃp2に向かう方向である。逆方向Ｐd1は、コイル３１の他端から一端に向かう方向であり、スイッチング部７４の第２接続点Ｃp2からコイル３１介して第１接続点Ｃp1に向かう方向である。 In this way, the movable magnetic pole part 132 moves in the direction approaching the facing part 133 and in the direction away from the facing part 133 (in one direction and the other direction of the axis R) within the coil 31, depending on the direction of the current flowing through the coil 31. Displace. The predetermined direction Pd2 here is a direction from one end of the coil 31 to the other end, and is a direction from the first connection point Cp1 of the switching section 74 to the second connection point Cp2 via the coil 31. The reverse direction Pd1 is a direction from the other end of the coil 31 to one end, and is a direction from the second connection point Cp2 of the switching section 74 to the first connection point Cp1 via the coil 31.
　可動磁極部１３２は、ロッド３５の長さ方向の中央部に一体的に連結して配置されている。ロッド３５は、可動磁極部１３２とともに軸線Ｒ方向に移動自在である。ロッド３５の一端部は、コイル３１内における可動磁極部１３２の位置に関わらず、コイル３１の外部に突出している。コイル３１の一端から外部に突出しているロッド３５の一端部には、永久磁石３５Ａが取り付けられている。 The movable magnetic pole portion 132 is disposed integrally connected to the central portion of the rod 35 in the longitudinal direction. The rod 35 is movable in the direction of the axis R together with the movable magnetic pole part 132. One end of the rod 35 protrudes to the outside of the coil 31 regardless of the position of the movable magnetic pole part 132 within the coil 31. A permanent magnet 35A is attached to one end of the rod 35 that projects outward from one end of the coil 31.
［スイッチング部の構成］
　スイッチング部７４は、直流電源である電源部９０から供給される直流電流を、コイル３１に対して逆方向Ｐd1又は所定方向Ｐd2のいずれかの方向に流れるように供給する。スイッチング部７４は、第１スイッチ素子７４Ａ、第２スイッチ素子７４Ｂ、第３スイッチ素子７４Ｃ、及び第４スイッチ素子７４Ｄ（以下、スイッチ素子７４Ａ，７４Ｂ，７４Ｃ，７４Ｄともいう）がフルブリッジ接続された構成を有する。スイッチ素子７４Ａ，７４Ｂ，７４Ｃ，７４Ｄには、種々のスイッチ素子を用いることができるが、ＭＯＳＦＥＴ（Metal Oxide Semiconductor Field Effect Transistor）を用いることが好ましい。 [Switching section configuration]
The switching unit 74 supplies a DC current supplied from a power supply unit 90, which is a DC power source, to the coil 31 so as to flow in either the opposite direction Pd1 or the predetermined direction Pd2. The switching unit 74 includes a first switch element 74A, a second switch element 74B, a third switch element 74C, and a fourth switch element 74D (hereinafter also referred to as switch elements 74A, 74B, 74C, and 74D) connected in a full bridge. It has a configuration. Although various switch elements can be used for the switch elements 74A, 74B, 74C, and 74D, it is preferable to use MOSFETs (Metal Oxide Semiconductor Field Effect Transistors).
　第１スイッチ素子７４Ａ及び第２スイッチ素子７４Ｂは、スイッチング部７４に入力電圧を入力する導電路９１と、基準導電路９２との間に直列に接続され、互いが第１接続点Ｃp1において電気的に接続している。第３スイッチ素子７４Ｃ及び第４スイッチ素子７４Ｄは、導電路９１と基準導電路９２との間に直列に接続され、互いが第２接続点Ｃp2において電気的に接続している。第１接続点Ｃp1には、コイル３１の一端が電気的に接続されている。第２接続点Ｃp2には、コイル３１の他端が電気的に接続されている。 The first switch element 74A and the second switch element 74B are connected in series between the conductive path 91 that inputs the input voltage to the switching section 74 and the reference conductive path 92, and are electrically connected to each other at the first connection point Cp1. is connected to. The third switch element 74C and the fourth switch element 74D are connected in series between the conductive path 91 and the reference conductive path 92, and are electrically connected to each other at the second connection point Cp2. One end of the coil 31 is electrically connected to the first connection point Cp1. The other end of the coil 31 is electrically connected to the second connection point Cp2.
［検知部の構成］
　検知部７５は、検出部７１及び制御部１７２内に設けられた演算部１７２Ａによって構成されている。演算部１７２Ａは、検出部７１が検出したロッド３５の永久磁石３５Ａの磁気の大きさ及び向きを互いに直交する３つの方向に分けて算出し得る構成とされている。演算部１７２Ａは、検出部７１が検出した永久磁石３５Ａの磁気の大きさ及び向きの変化量を所定時間毎に算出し得る構成とされている。演算部１７２Ａは、検出部７１が検出した磁気の大きさ及び向きを互いに直交する３つの方向に分けて算出し、これらの変化量に基づいて、永久磁石３５Ａが設けられたロッド３５が移動しているか否かを把握する。例えば、ロッド３５が移動していない場合、検出部７１は、永久磁石３５Ａの磁気の大きさ及び向きの変化量を０として検出する。また、ロッド３５が移動する場合、検出部７１は、永久磁石３５Ａの磁気の大きさ及び向きの変化量を０でない数値として検出する。例えば、検知部７５は、変位量が０から０でない数値に変化したことを検出することによって、可動磁極部１３２の移動の開始を検出する。 [Configuration of detection unit]
The detection unit 75 includes a detection unit 71 and a calculation unit 172A provided in the control unit 172. The calculation unit 172A is configured to be able to calculate the magnitude and direction of the magnetism of the permanent magnet 35A of the rod 35 detected by the detection unit 71 by dividing it into three mutually orthogonal directions. The calculation unit 172A is configured to be able to calculate the amount of change in the magnetic magnitude and direction of the permanent magnet 35A detected by the detection unit 71 at predetermined time intervals. The calculation unit 172A calculates the magnitude and direction of the magnetism detected by the detection unit 71 by dividing it into three mutually orthogonal directions, and based on the amount of change in these, the rod 35 provided with the permanent magnet 35A moves. Understand whether or not For example, when the rod 35 is not moving, the detection unit 71 detects the amount of change in the magnetic magnitude and direction of the permanent magnet 35A as zero. Further, when the rod 35 moves, the detection unit 71 detects the amount of change in the magnetic magnitude and direction of the permanent magnet 35A as a non-zero value. For example, the detection unit 75 detects the start of movement of the movable magnetic pole portion 132 by detecting that the amount of displacement changes from 0 to a non-zero value.
［制御部の構成］
　図１に示すように、例えば、制御部１７２のＲＯＭ１７２Ｂには、予め定められた移動閾値Ｖthが固定値として記憶されている。制御部１７２は、検出部７１が検出した永久磁石３５Ａの磁気の大きさ及び向きの変化量と、移動閾値Ｖthとに基づいて、ロッド３５が移動しているか否かを判定し得る構成とされている。例えば、制御部１７２は、この変化量の大きさが移動閾値Ｖth以下の場合にロッド３５が移動していないと判別し、この変化量が移動閾値Ｖthよりも大きい場合にロッド３５が移動していると判別する。 [Configuration of control unit]
As shown in FIG. 1, for example, a predetermined movement threshold Vth is stored as a fixed value in the ROM 172B of the control unit 172. The control unit 172 is configured to be able to determine whether or not the rod 35 is moving based on the amount of change in the magnetic magnitude and direction of the permanent magnet 35A detected by the detection unit 71 and the movement threshold Vth. ing. For example, the control unit 172 determines that the rod 35 has not moved when the amount of change is less than or equal to the movement threshold Vth, and determines that the rod 35 has not moved when the amount of change is greater than the movement threshold Vth. It is determined that there is.
　制御部１７２は、図示しない外部ＥＣＵ等から、駆動指令信号Ｃ１が入力されると、スイッチング部７４に駆動信号Ｄs1を出力する構成とされている。例えば、駆動信号Ｄs1は、コイル３１に逆方向Ｐd1の電流を流すデューティのＰＷＭである。制御部１７２からスイッチング部７４に駆動信号Ｄs1を出力すると、スイッチング部７４の各スイッチ素子７４Ａ，７４Ｂ，７４Ｃ，７４Ｄのオンオフ動作が制御されてコイル３１に逆方向Ｐd1の電流が流れる。 The control unit 172 is configured to output a drive signal Ds1 to the switching unit 74 when a drive command signal C1 is input from an external ECU (not shown) or the like. For example, the drive signal Ds1 is PWM with a duty that causes a current in the opposite direction Pd1 to flow through the coil 31. When the control section 172 outputs the drive signal Ds1 to the switching section 74, the on/off operation of each switch element 74A, 74B, 74C, 74D of the switching section 74 is controlled, and a current in the opposite direction Pd1 flows through the coil 31.
　制御部１７２は、図示しない外部ＥＣＵ等から、駆動指令信号Ｃ２が入力されると、スイッチング部７４に駆動信号Ｄs2を出力する構成とされている。例えば、駆動信号Ｄs2は、コイル３１に所定方向Ｐd2の電流を流すデューティのＰＷＭである。制御部１７２からスイッチング部７４に駆動信号Ｄs2を出力すると、スイッチング部７４の各スイッチ素子７４Ａ，７４Ｂ，７４Ｃ，７４Ｄのオンオフ動作が制御されてコイル３１に所定方向Ｐd2の電流が流れる。こうして、制御部１７２は、コイル３１に流す電流を制御する。 The control unit 172 is configured to output a drive signal Ds2 to the switching unit 74 when the drive command signal C2 is input from an external ECU (not shown) or the like. For example, the drive signal Ds2 is a PWM duty signal that causes a current to flow in a predetermined direction Pd2 through the coil 31. When the control section 172 outputs the drive signal Ds2 to the switching section 74, the on/off operation of each switch element 74A, 74B, 74C, 74D of the switching section 74 is controlled, and a current flows in the coil 31 in a predetermined direction Pd2. In this way, the control unit 172 controls the current flowing through the coil 31.
　制御部１７２は、駆動指令信号Ｃ１又はＣ２が入力されており、且つ可動磁極部１３２が対向部１３３（第１対向部１３３Ａ及び第２対向部１３３Ｂのいずれか）から離間する方向に移動するまでの初期期間において、電流上昇制御を実行する。電流上昇制御は、コイル３１に流れる電流が一定の割合で徐々に大きくなるようにコイル３１に流れる電流を調整する制御である。一定の割合で徐々に大きくなるとは、例えば、所定の大きさの電流増加量ΔＩが単位時間毎に増加する状態である。コイル３１に流れる電流が一定の割合で徐々に大きくなると、これに比例するように、可動磁極部１３２、第１対向部１３３Ａ、及び第２対向部１３３Ｂが帯びる磁気の強さも一定の割合で徐々に大きくなる。 The control unit 172 receives the drive command signal C1 or C2 until the movable magnetic pole part 132 moves in a direction away from the facing part 133 (either the first facing part 133A or the second facing part 133B). In the initial period, current increase control is executed. The current increase control is a control that adjusts the current flowing through the coil 31 so that the current flowing through the coil 31 gradually increases at a constant rate. Gradually increasing at a constant rate means, for example, that the current increase amount ΔI of a predetermined magnitude increases every unit time. When the current flowing through the coil 31 gradually increases at a constant rate, the magnetic strength of the movable magnetic pole section 132, the first opposing section 133A, and the second opposing section 133B gradually increases at a constant rate in proportion to this. becomes larger.
　例えば、初期期間は、ロッド３５が移動していないと演算部１７２Ａが判別している間の期間であり、コイル３１への電流供給を開始する時から、検知部７５が可動磁極部１３２の移動開始を検出するときまでの間である。 For example, the initial period is a period during which the arithmetic unit 172A determines that the rod 35 is not moving. This is until the start is detected.
［ソレノイド制御装置における動作］
　ソレノイド制御装置１７０の動作の一例について説明する。 [Operation in solenoid control device]
An example of the operation of the solenoid control device 170 will be described.
　例えば、駆動指令信号Ｃ１，Ｃ２が制御部１７２に入力されていない状態であって、可動磁極部１３２と第１対向部１３３Ａとが永久磁石１３２Ａの磁力によって吸着した状態において、図４に示す時刻Ｔ１に制御部１７２に駆動指令信号Ｃ１が入力される。駆動指令信号Ｃ２は、制御部１７２に入力されない。すると、制御部１７２は、スイッチング部７４に向けて、コイル３１に逆方向Ｐd1（図２参照）に大きさがＮ1（Ａ）の電流を流すように調整された駆動信号Ｄs1を出力する。制御部１７２は、時刻Ｔ１に電流上昇制御を開始する。 For example, when the drive command signals C1 and C2 are not input to the control unit 172 and the movable magnetic pole part 132 and the first opposing part 133A are attracted by the magnetic force of the permanent magnet 132A, the time shown in FIG. A drive command signal C1 is input to the control unit 172 at T1. The drive command signal C2 is not input to the control section 172. Then, the control section 172 outputs a drive signal Ds1 to the switching section 74, which is adjusted so that a current having a magnitude of N1 (A) flows through the coil 31 in the opposite direction Pd1 (see FIG. 2). The control unit 172 starts current increase control at time T1.
　コイル３１に流れる電流の大きさ（Ｎ１（Ａ））は、コイル３１によって第１対向部１３３Ａが帯びる磁気が第１対向部１３３Ａに近い側の永久磁石１３２Ａの磁力と反発せずに、第１対向部１３３Ａと可動磁極部１３２が永久磁石１３２Ａの磁力によって吸着した状態が保持される程度の大きさである。 The magnitude (N1 (A)) of the current flowing through the coil 31 is such that the magnetism imparted to the first opposing portion 133A by the coil 31 does not repel the magnetic force of the permanent magnet 132A on the side closer to the first opposing portion 133A. The size is such that the facing portion 133A and the movable magnetic pole portion 132 are kept attracted to each other by the magnetic force of the permanent magnet 132A.
　そして、時刻Ｔ１を経過後、制御部１７２は、コイル３１に流す電流値の大きさを一定の割合で徐々に大きくなるように駆動信号Ｄs1の調整を継続する。これによって、時刻Ｔ１を経過後、コイル３１に流れる電流の大きさは、Ｎ１（Ａ）から一定の割合で徐々に大きくなる。 After time T1 has elapsed, the control unit 172 continues adjusting the drive signal Ds1 so that the magnitude of the current flowing through the coil 31 gradually increases at a constant rate. As a result, after time T1 has elapsed, the magnitude of the current flowing through the coil 31 gradually increases from N1 (A) at a constant rate.
　これに伴い、可動磁極部１３２が帯びる磁気が一定の割合で徐々に大きくなる。そして、時刻Ｔ２において、コイル３１に流れる電流の大きさは、Ｎ２（Ａ）になり、このときの第１対向部１３３Ａの磁気が第１対向部１３３Ａに近い側の永久磁石１３２Ａの磁力と反発する大きさになる。すると、可動磁極部１３２は、第１対向部１３３Ａと反発するとともに、第２対向部１３３Ｂに引き寄せられ、第２対向部１３３Ｂ側への移動を開始する。つまり、可動磁極部１３２が移動を開始する前には、第１対向部１３３Ａと可動磁極部１３２とは、永久磁石１３２Ａの磁力によって吸着している。時刻Ｔ２において検知部７５は、可動磁極部１３２が第２対向部１３３Ｂ側への移動を開始したことを検知する。すると、制御部１７２は、検知部７５の検出結果に基づいて、電流上昇制御を終了する。時刻Ｔ１から時刻Ｔ２までの間の期間は、初期期間である。 Along with this, the magnetism of the movable magnetic pole portion 132 gradually increases at a constant rate. Then, at time T2, the magnitude of the current flowing through the coil 31 becomes N2 (A), and the magnetism of the first opposing part 133A at this time is repelled by the magnetic force of the permanent magnet 132A on the side closer to the first opposing part 133A. It will be the size that it will be. Then, the movable magnetic pole part 132 is repelled by the first facing part 133A, is attracted to the second facing part 133B, and starts moving toward the second facing part 133B. That is, before the movable magnetic pole part 132 starts moving, the first opposing part 133A and the movable magnetic pole part 132 are attracted to each other by the magnetic force of the permanent magnet 132A. At time T2, the detection section 75 detects that the movable magnetic pole section 132 has started moving toward the second opposing section 133B. Then, the control unit 172 ends the current increase control based on the detection result of the detection unit 75. The period from time T1 to time T2 is an initial period.
　時刻Ｔ２以降において制御部１７２は、電流上昇制御とは異なる別方式の電流制御を実行し得る。例えば、可動磁極部１３２が第２対向部１３３Ｂに向けて過度に加速しないようにコイル３１に流れる電流の大きさを制御する方法等が考えられる。そして、可動磁極部１３２は、第２対向部１３３Ｂに永久磁石１３２Ａの磁力によって吸着する。 After time T2, the control unit 172 can perform a different type of current control that is different from the current increase control. For example, a method may be considered in which the magnitude of the current flowing through the coil 31 is controlled so that the movable magnetic pole part 132 does not accelerate excessively toward the second opposing part 133B. The movable magnetic pole part 132 is attracted to the second opposing part 133B by the magnetic force of the permanent magnet 132A.
　次に、駆動指令信号Ｃ１，Ｃ２が制御部１７２に入力されていない状態であって、可動磁極部１３２と第２対向部１３３Ｂとが永久磁石１３２Ａの磁力によって吸着した状態において、図５に示す時刻Ｔ３に制御部１７２に駆動指令信号Ｃ２が入力される。駆動指令信号Ｃ１は、制御部１７２に入力されない。すると、制御部１７２は、スイッチング部７４に向けて、コイル３１に所定方向Ｐd2（図３参照）に大きさがＮ３（Ａ）の電流を流すように調整された駆動信号Ｄs2を出力する。制御部１７２は、時刻Ｔ３に電流上昇制御を開始する。 Next, in a state where the drive command signals C1 and C2 are not input to the control unit 172 and the movable magnetic pole part 132 and the second opposing part 133B are attracted by the magnetic force of the permanent magnet 132A, the state shown in FIG. Drive command signal C2 is input to control section 172 at time T3. The drive command signal C1 is not input to the control section 172. Then, the control section 172 outputs, to the switching section 74, a drive signal Ds2 adjusted to cause a current of magnitude N3 (A) to flow through the coil 31 in a predetermined direction Pd2 (see FIG. 3). The control unit 172 starts current increase control at time T3.
　コイル３１に流れる電流の大きさ（Ｎ３（Ａ））は、コイル３１によって第２対向部１３３Ｂが帯びる磁気が第２対向部１３３Ｂに近い側の永久磁石１３２Ａの磁力と反発せずに、第２対向部１３３Ｂと可動磁極部１３２が永久磁石１３２Ａの磁力によって吸着した状態が保持される程度の大きさである。 The magnitude of the current flowing through the coil 31 (N3(A)) is such that the magnetism imparted to the second opposing portion 133B by the coil 31 does not repel the magnetic force of the permanent magnet 132A on the side closer to the second opposing portion 133B. The size is such that the facing portion 133B and the movable magnetic pole portion 132 are kept attracted to each other by the magnetic force of the permanent magnet 132A.
　そして、時刻Ｔ３を経過後、制御部１７２は、コイル３１に流す電流値の大きさを一定の割合で徐々に大きくなるように駆動信号Ｄs2の調整を継続する。これによって、時刻Ｔ３を経過後、コイル３１に流れる電流の大きさは、Ｎ３（Ａ）から一定の割合で徐々に大きくなる。 After time T3 has elapsed, the control unit 172 continues adjusting the drive signal Ds2 so that the magnitude of the current flowing through the coil 31 gradually increases at a constant rate. As a result, after time T3, the magnitude of the current flowing through the coil 31 gradually increases from N3(A) at a constant rate.
　これに伴い、可動磁極部１３２が帯びる磁気が一定の割合で徐々に大きくなる。そして、時刻Ｔ４において、コイル３１に流れる電流の大きさは、Ｎ４（Ａ）になり、このときの第２対向部１３３Ｂの磁気が第２対向部１３３Ａに近い側の永久磁石１３２Ａの磁力と反発する大きさになる。すると、可動磁極部１３２は、第２対向部１３３Ｂと反発するとともに、第１対向部１３３Ａに引き寄せられ、第１対向部１３３Ａ側への移動を開始する。時刻Ｔ４において検知部７５は、可動磁極部１３２が第１対向部１３３Ａ側への移動を開始したことを検知する。すると、制御部１７２は、検知部７５の検出結果に基づいて、電流上昇制御を終了する。時刻Ｔ３から時刻Ｔ４までの間の期間は、初期期間である。 Along with this, the magnetism of the movable magnetic pole portion 132 gradually increases at a constant rate. Then, at time T4, the magnitude of the current flowing through the coil 31 becomes N4 (A), and the magnetism of the second opposing part 133B at this time is repelled by the magnetic force of the permanent magnet 132A on the side closer to the second opposing part 133A. It will be the size that it will be. Then, the movable magnetic pole part 132 is repelled by the second facing part 133B, is attracted to the first facing part 133A, and starts moving toward the first facing part 133A. At time T4, the detection section 75 detects that the movable magnetic pole section 132 has started moving toward the first opposing section 133A. Then, the control unit 172 ends the current increase control based on the detection result of the detection unit 75. The period from time T3 to time T4 is an initial period.
　時刻Ｔ４以降において制御部１７２は、電流上昇制御とは異なる別方式の電流制御を実行し得る。例えば、可動磁極部１３２が第１対向部１３３Ａに向けて過度に加速しないようにコイル３１に流れる電流の大きさを制御する方法等が考えられる。そして、可動磁極部１３２は、第１対向部１３３Ａに永久磁石１３２Ａの磁力によって吸着する。 After time T4, the control unit 172 can perform a different type of current control that is different from the current increase control. For example, a method may be considered in which the magnitude of the current flowing through the coil 31 is controlled so that the movable magnetic pole section 132 does not accelerate excessively toward the first opposing section 133A. The movable magnetic pole part 132 is attracted to the first opposing part 133A by the magnetic force of the permanent magnet 132A.
　次に、本構成の効果を例示する。 Next, the effects of this configuration will be illustrated.
　ソレノイド制御装置１７０は、コイル３１と可動磁極部１３２と対向部１３３とを有するとともに、対向部１３３に接近する方向及び対向部１３３から離間する方向に移動するように可動磁極部１３２が変位するソレノイド１３０を制御対象とする。ソレノイド制御装置１７０は、コイル３１に流す電流を制御する制御部１７２を有している。制御部１７２は、可動磁極部１３２が対向部１３３から離間する方向に移動を開始するまでの初期期間において、コイル３１に流れる電流値が徐々に大きくなるようにコイル３１に流れる電流を調整する電流上昇制御を実行する。この構成によれば、可動磁極部１３２が急激に加速することを避けることができる。 The solenoid control device 170 includes a coil 31, a movable magnetic pole part 132, and a facing part 133, and is a solenoid in which the movable magnetic pole part 132 is displaced so as to move in a direction toward the facing part 133 and a direction away from the facing part 133. 130 is to be controlled. The solenoid control device 170 includes a control section 172 that controls the current flowing through the coil 31. The control unit 172 controls a current that adjusts the current flowing through the coil 31 so that the value of the current flowing through the coil 31 gradually increases during an initial period until the movable magnetic pole portion 132 starts moving in a direction away from the opposing portion 133. Execute climb control. According to this configuration, rapid acceleration of the movable magnetic pole portion 132 can be avoided.
　ソレノイド制御装置１７０は、可動磁極部１３２の移動の開始を検出する検知部７５を有し、初期期間は、コイル３１への電流供給を開始する時から、検知部７５が可動磁極部１３２の移動開始を検出する時までの間である。制御部１７２は、初期期間において電流上昇制御を実行する。この構成によれば、初期期間において電流上昇制御を行う構成であるので、制御部１７２は、初期期間と、初期期間よりも後の期間と、における電流制御を確実に切り分けて実行することができる。 The solenoid control device 170 includes a detection unit 75 that detects the start of movement of the movable magnetic pole portion 132. During an initial period, from the time when current supply to the coil 31 is started, the detection unit 75 detects the start of movement of the movable magnetic pole portion 132. This is until the start is detected. The control unit 172 executes current increase control in the initial period. According to this configuration, since the current increase control is performed in the initial period, the control unit 172 can reliably separate and execute current control in the initial period and a period after the initial period. .
　ソレノイド制御装置１７０において、可動磁極部１３２が移動を開始する前には、対向部１３３と可動磁極部１３２とが磁力によって吸着する。対向部１３３と可動磁極部１３２とは磁力によって吸着しているので、可動磁極部１３２を対向部１３３から引き離すには、対向部１３３と可動磁極部１３２とが吸着する吸着力と反対の向きに吸着力よりも大きな外力を可動磁極部１３２に付与する必要がある。こうした場合、吸着力よりも大きな外力を突然に加えると、可動磁極部１３２は、突然に対向部１３３から離れるように移動を開始する。ソレノイド制御装置１７０は、対向部１３３と可動磁極部１３２とが磁力によって吸着している構成の場合、制御部１７２がコイル３１に流れる電流値を徐々に大きくなるようにコイル３１に流れる電流を調整する。このため、可動磁極部１３２に吸着力よりも大きい外力が突然に加わることを避け、可動磁極部１３２が対向部１３３から突然に離れるように移動することを抑制し易い。 In the solenoid control device 170, before the movable magnetic pole part 132 starts moving, the facing part 133 and the movable magnetic pole part 132 are attracted by magnetic force. Since the facing part 133 and the movable magnetic pole part 132 are attracted to each other by magnetic force, in order to separate the movable magnetic pole part 132 from the facing part 133, it is necessary to move the facing part 133 and the movable magnetic pole part 132 in the opposite direction to the attracting force. It is necessary to apply an external force greater than the attraction force to the movable magnetic pole portion 132. In such a case, if an external force larger than the attraction force is suddenly applied, the movable magnetic pole part 132 suddenly starts moving away from the opposing part 133. When the solenoid control device 170 has a configuration in which the facing portion 133 and the movable magnetic pole portion 132 are attracted by magnetic force, the control portion 172 adjusts the current flowing through the coil 31 so that the value of the current flowing through the coil 31 gradually increases. do. Therefore, it is possible to avoid sudden application of an external force greater than the attraction force to the movable magnetic pole part 132, and to easily suppress the movable magnetic pole part 132 from suddenly moving away from the opposing part 133.
＜実施形態２＞
　次に、実施形態２に係るソレノイド制御装置２７０について、図６から図１０を参照しつつ説明する。実施形態２において、ソレノイド制御装置２７０の制御対象であるソレノイド２３０において、第２対向部が設けられていない点、収容部２３６が設けられている点、圧縮コイルバネ２３４が設けられている点、可動磁極部２３２の構成等が実施形態２と異なる。さらに、実施形態２のソレノイド制御装置２７０は、制御部２７２の動作等が実施形態１と異なる。実施形態２において、実施形態１と同じ構成については同一の符号を付し、実施形態１と同じ作用及び効果については説明を省略する。 <Embodiment 2>
Next, a solenoid control device 270 according to a second embodiment will be described with reference to FIGS. 6 to 10. In the second embodiment, the solenoid 230 that is controlled by the solenoid control device 270 has no second facing portion, a housing portion 236, a compression coil spring 234, and a movable portion. The configuration of the magnetic pole portion 232 and the like are different from the second embodiment. Furthermore, the solenoid control device 270 of the second embodiment differs from the first embodiment in the operation of the control section 272 and the like. In the second embodiment, the same components as in the first embodiment are denoted by the same reference numerals, and descriptions of the same functions and effects as in the first embodiment will be omitted.
［ソレノイドの構成］
　図６には、実施形態２に係るソレノイド制御装置２７０が設けられたソレノイド制御システム２００が例示される。図６に示すように、ソレノイド２３０は、コイル３１と、第１対向部１３３Ａと、可動磁極部２３２と、ロッド３５と、収容部２３６と、圧縮コイルバネ２３４と、を有している。 [Solenoid configuration]
FIG. 6 illustrates a solenoid control system 200 provided with a solenoid control device 270 according to the second embodiment. As shown in FIG. 6, the solenoid 230 includes a coil 31, a first opposing portion 133A, a movable magnetic pole portion 232, a rod 35, a housing portion 236, and a compression coil spring 234.
　可動磁極部２３２は、可動磁極本体部２３２Ａと、押え板部２３２Ｂと、を有している。可動磁極本体部２３２Ａは、磁性を有する材料で形成されている。可動磁極本体部２３２Ａは、コイル３１内であって、軸線Ｒ周りに環状をなして配置される。可動磁極本体部２３２Ａ内には、永久磁石１３２Ａが設けられている。永久磁石１３２Ａは、自身の２つの磁極（Ｓ極、及びＮ極）が軸線Ｒ方向に並ぶ向きに配置されている。なお、永久磁石１３２Ａを可動磁極本体部２３２Ａ外に配置してもよい。例えば、第１対向部１３３Ａ内に設ける構成が考えられる。 The movable magnetic pole section 232 has a movable magnetic pole main body section 232A and a presser plate section 232B. The movable magnetic pole main body portion 232A is made of a magnetic material. The movable magnetic pole main body portion 232A is arranged in a ring shape around the axis R within the coil 31. A permanent magnet 132A is provided inside the movable magnetic pole main body 232A. The permanent magnet 132A is arranged such that its two magnetic poles (S pole and N pole) are aligned in the axis R direction. Note that the permanent magnet 132A may be arranged outside the movable magnetic pole main body 232A. For example, a configuration may be considered in which it is provided within the first opposing portion 133A.
　押え板部２３２Ｂは、軸線Ｒ周りに環状をなし、コイル３１の外に配置されている。可動磁極本体部２３２Ａ、及び押え板部２３２Ｂは、軸線Ｒ方向に第１対向部１３３Ａを挟んで配置されている。可動磁極部２３２は、軸線Ｒ方向に移動自在に配置されている。 The holding plate portion 232B has an annular shape around the axis R, and is arranged outside the coil 31. The movable magnetic pole main body portion 232A and the presser plate portion 232B are arranged in the direction of the axis R with the first opposing portion 133A interposed therebetween. The movable magnetic pole portion 232 is arranged to be movable in the direction of the axis R.
　可動磁極本体部２３２Ａは、ロッド３５の長さ方向の中央部に一体的に連結して配置されている。押え板部２３２Ｂは、ロッド３５の長さ方向の他端部に一体的に連結して配置されている。ロッド３５は、可動磁極本体部２３２Ａ、及び押え板部２３２Ｂとともに軸線Ｒ方向に移動自在に配置されている。 The movable magnetic pole main body portion 232A is disposed integrally connected to the central portion of the rod 35 in the longitudinal direction. The presser plate portion 232B is disposed integrally connected to the other end of the rod 35 in the length direction. The rod 35 is disposed so as to be movable in the direction of the axis R together with the movable magnetic pole body 232A and the presser plate 232B.
　収容部２３６は、コイル３１に対して軸線Ｒ方向に隣合って設けられている。収容部２３６は、ロッド３５の他端部が貫通しており、内部に押え板部２３２Ｂが収容されている。圧縮コイルバネ２３４は、収容部２３６の内部であって、押え板部２３２Ｂを挟んで、第１対向部１３３Ａの反対側に配置されている。圧縮コイルバネ２３４の伸縮方向は、軸線Ｒに沿っている。圧縮コイルバネ２３４は、軸線Ｒに沿った向きであり、押え板部２３２Ｂを第１対向部１３３Ａに近づける向きに、押え板部２３２Ｂに常に外力を付与する構成とされている。つまり、ソレノイド２３０は、可動磁極部２３２に対して、押え板部２３２Ｂ（所定部位）を第１対向部１３３Ａに接近させる方向に外力が付与される構成である。圧縮コイルバネ２３４は、伸縮方向に圧縮された状態（すなわち、自由長よりも短い状態）で収容部２３６に収容されている。このため、圧縮コイルバネ２３４は、常に伸長方向に弾性力を生じており、この弾性力を外力として押え板部２３２Ｂに常に付与するのである。 The housing portion 236 is provided adjacent to the coil 31 in the direction of the axis R. The other end of the rod 35 passes through the accommodating portion 236, and the holding plate portion 232B is accommodated therein. The compression coil spring 234 is disposed inside the housing portion 236 on the opposite side of the first opposing portion 133A with the presser plate portion 232B interposed therebetween. The direction of expansion and contraction of the compression coil spring 234 is along the axis R. The compression coil spring 234 is oriented along the axis R, and is configured to always apply an external force to the presser plate portion 232B in a direction that brings the presser plate portion 232B closer to the first opposing portion 133A. That is, the solenoid 230 is configured to apply an external force to the movable magnetic pole portion 232 in a direction that causes the presser plate portion 232B (predetermined portion) to approach the first opposing portion 133A. The compression coil spring 234 is housed in the housing portion 236 in a compressed state in the expansion/contraction direction (that is, in a state that is shorter than its free length). Therefore, the compression coil spring 234 always generates an elastic force in the extension direction, and this elastic force is always applied as an external force to the presser plate portion 232B.
　例えば、押え板部２３２Ｂが第１対向部１３３Ａに接触した状態（図７参照）であるとき、圧縮コイルバネ２３４が押え板部２３２Ｂに付与する外力は、最小になる。そして、押え板部２３２Ｂが第１対向部１３３Ａから最も離れた位置（図８参照）にあるとき（すなわち、圧縮コイルバネ２３４が最も圧縮された状態のとき）、圧縮コイルバネ２３４が押え板部２３２Ｂに付与する外力は、最大になる。 For example, when the presser plate portion 232B is in contact with the first opposing portion 133A (see FIG. 7), the external force applied by the compression coil spring 234 to the presser plate portion 232B is minimized. When the holding plate part 232B is at the farthest position from the first opposing part 133A (see FIG. 8) (that is, when the compression coil spring 234 is in the most compressed state), the compression coil spring 234 is placed in the holding plate part 232B. The applied external force becomes maximum.
　制御部２７２は、図示しない外部ＥＣＵ等から、駆動指令信号Ｃ２が入力されるとスイッチング部７４に駆動信号Ｄs2を出力する構成とされている。制御部２７２からスイッチング部７４に駆動信号Ｄs2を出力すると、スイッチング部７４の各スイッチ素子７４Ａ，７４Ｂ，７４Ｃ，７４Ｄのオンオフ動作が制御されてコイル３１に所定方向Ｐd2の電流が流れる。制御部２７２に駆動指令信号Ｃ２が入力されていない状態のとき、圧縮コイルバネ２３４が押え板部２３２Ｂに付与する弾性力（外力）によって、可動磁極本体部２３２Ａは、第１対向部１３３Ａから最も離れた位置に遠ざかった状態が保持される（図７参照）。制御部２７２に駆動指令信号Ｃ２が入力されていない状態のとき、コイル３１には電流が流れない。このとき、可動磁極本体部２３２Ａ及び第１対向部１３３Ａは、磁気を帯びない。 The control unit 272 is configured to output a drive signal Ds2 to the switching unit 74 when a drive command signal C2 is input from an external ECU (not shown) or the like. When the control section 272 outputs the drive signal Ds2 to the switching section 74, the on/off operation of each switch element 74A, 74B, 74C, 74D of the switching section 74 is controlled, and a current flows in the coil 31 in a predetermined direction Pd2. When the drive command signal C2 is not input to the control section 272, the elastic force (external force) applied by the compression coil spring 234 to the holding plate section 232B causes the movable magnetic pole main body section 232A to move farthest away from the first opposing section 133A. The distanced state is maintained at the remote position (see FIG. 7). When the drive command signal C2 is not input to the control unit 272, no current flows through the coil 31. At this time, the movable magnetic pole main body portion 232A and the first opposing portion 133A are not magnetized.
　制御部２７２は、駆動指令信号Ｃ２が入力されており、且つロッド３５が移動していないと演算部１７２Ａが判別している間、コイル３１に流れる電流を一定の割合で徐々に大きくする電流上昇制御を実行する。コイル３１に流れる電流を一定の割合で徐々に大きくすると、これに比例するように、可動磁極本体部２３２Ａ及び第１対向部１３３Ａが帯びる磁気の強さも一定の割合で徐々に大きくなる。 The control unit 272 increases the current flowing through the coil 31 gradually at a constant rate while the drive command signal C2 is input and the calculation unit 172A determines that the rod 35 is not moving. Execute control. When the current flowing through the coil 31 is gradually increased at a constant rate, the magnetic strength of the movable magnetic pole main body portion 232A and the first opposing portion 133A is also gradually increased at a constant rate in proportion to this.
［ソレノイド制御装置における動作］
　ソレノイド制御装置２７０の動作の一例について説明する。 [Operation in solenoid control device]
An example of the operation of the solenoid control device 270 will be described.
　制御部１７２に駆動指令信号Ｃ２が入力されていない状態において、可動磁極本体部２３２Ａは、第１対向部１３３Ａから最も遠ざかった位置に保持されている（図７参照）。これとともに、押え板部２３２Ｂは、圧縮コイルバネ２３４によって押圧されて、第１対向部１３３Ａに接触した状態に保持されている。そして、図９に示す時刻Ｔ５に制御部２７２に駆動指令信号Ｃ２が入力される。すると、制御部１７２は、スイッチング部７４に向けて、コイル３１に所定方向Ｐd2に大きさがＮ５（Ａ）の電流を流すように調整された駆動信号Ｄs2を出力する。制御部２７２は、時刻Ｔ５に電流上昇制御を開始する。 In a state where the drive command signal C2 is not input to the control unit 172, the movable magnetic pole main body portion 232A is held at the farthest position from the first opposing portion 133A (see FIG. 7). At the same time, the presser plate portion 232B is pressed by the compression coil spring 234 and is held in contact with the first opposing portion 133A. Then, the drive command signal C2 is input to the control section 272 at time T5 shown in FIG. Then, the control section 172 outputs a drive signal Ds2, which is adjusted to cause a current of N5 (A) in magnitude to flow through the coil 31 in a predetermined direction Pd2, to the switching section 74. The control unit 272 starts current increase control at time T5.
　これによって、可動磁極本体部２３２Ａには、第１対向部１３３Ａに引き寄せられる力が付与される。このとき、可動磁極本体部２３２Ａに付与される第１対向部１３３Ａに引き寄せられる力は、圧縮コイルバネ２３４が押え板部２３２Ｂに付与する弾性力（外力）よりも僅かに小さい。このため、コイル３１に所定方向Ｐd2に大きさがＮ５（Ａ）の電流が流れても、可動磁極本体部２３２Ａは、第１対向部１３３Ａ側に移動しない。 As a result, a force is applied to the movable magnetic pole main body portion 232A to draw it toward the first opposing portion 133A. At this time, the force applied to the movable magnetic pole main body part 232A to be attracted to the first opposing part 133A is slightly smaller than the elastic force (external force) applied by the compression coil spring 234 to the presser plate part 232B. Therefore, even if a current having a magnitude of N5 (A) flows through the coil 31 in the predetermined direction Pd2, the movable magnetic pole main body portion 232A does not move toward the first opposing portion 133A.
　そして、時刻Ｔ５を経過後、制御部２７２は、コイル３１に流す電流値の大きさを一定の割合で徐々に大きくなるように駆動信号Ｄs2の調整を継続する。これによって、時刻Ｔ５を経過後、コイル３１に流れる電流の大きさは、Ｎ５（Ａ）から一定の割合で徐々に大きくなる。 Then, after time T5 has elapsed, the control unit 272 continues adjusting the drive signal Ds2 so that the magnitude of the current value flowing through the coil 31 gradually increases at a constant rate. As a result, after time T5, the magnitude of the current flowing through the coil 31 gradually increases from N5 (A) at a constant rate.
　これに伴い、可動磁極本体部２３２Ａが帯びる磁気が一定の割合で徐々に大きくなる。そして、時刻Ｔ６において、コイル３１に流れる電流の大きさがＮ６（Ａ）になり、このとき、可動磁極本体部２３２Ａに付与される第１対向部１３３Ａに引き寄せられる力は、圧縮コイルバネ２３４が押え板部２３２Ｂに付与する弾性力（外力）よりも大きくなる。すると、可動磁極本体部２３２Ａは、第１対向部１３３Ａに引き寄せられ、第１対向部１３３Ａ側への移動を開始する。このとき、検知部７５は、可動磁極本体部２３２Ａが第１対向部１３３Ａ側への移動を開始したことを検知する。すると、制御部２７２は、検知部７５の検出結果に基づいて、電流上昇制御を終了する。 Along with this, the magnetism of the movable magnetic pole main body portion 232A gradually increases at a constant rate. Then, at time T6, the magnitude of the current flowing through the coil 31 becomes N6 (A), and at this time, the force applied to the movable magnetic pole main body part 232A to be attracted to the first opposing part 133A is suppressed by the compression coil spring 234. This is larger than the elastic force (external force) applied to the plate portion 232B. Then, the movable magnetic pole main body portion 232A is attracted to the first opposing portion 133A and starts moving toward the first opposing portion 133A. At this time, the detection section 75 detects that the movable magnetic pole main body section 232A has started moving toward the first opposing section 133A. Then, the control unit 272 ends the current increase control based on the detection result of the detection unit 75.
　時刻Ｔ６以降において制御部２７２は、電流上昇制御とは異なる別方式の電流制御を実行し得る。例えば、可動磁極本体部２３２Ａが第１対向部１３３Ａに向けて過度に加速しないようにコイル３１に流れる電流の大きさを制御する方法等が考えられる。そして、可動磁極本体部２３２Ａは、第１対向部１３３Ａに磁力によって吸着する。例えば、可動磁極本体部２３２Ａが第１対向部１３３Ａに磁力によって吸着した後も、制御部２７２には、駆動指令信号Ｃ２が継続して入力される。これによって、可動磁極本体部２３２Ａと第１対向部１３３Ａとが磁力によって吸着した状態が保持される。 After time T6, the control unit 272 can perform a different type of current control that is different from the current increase control. For example, a method may be considered in which the magnitude of the current flowing through the coil 31 is controlled so that the movable magnetic pole main body portion 232A does not excessively accelerate toward the first opposing portion 133A. The movable magnetic pole body 232A is magnetically attracted to the first opposing portion 133A. For example, even after the movable magnetic pole main body portion 232A is magnetically attracted to the first opposing portion 133A, the drive command signal C2 continues to be input to the control portion 272. As a result, the state in which the movable magnetic pole main body portion 232A and the first opposing portion 133A are attracted by magnetic force is maintained.
　可動磁極本体部２３２Ａと第１対向部１３３Ａとが磁力によって吸着した状態において、コイル３１には、所定方向Ｐd2に大きさがＮ７（Ａ）の電流が流れている（図１０参照）。そして、図１０に示す時刻Ｔ７に制御部２７２への駆動指令信号Ｃ２の入力が停止する。 In a state where the movable magnetic pole main body portion 232A and the first opposing portion 133A are attracted by magnetic force, a current having a magnitude of N7 (A) flows in the coil 31 in the predetermined direction Pd2 (see FIG. 10). Then, at time T7 shown in FIG. 10, input of the drive command signal C2 to the control section 272 is stopped.
　すると、時刻Ｔ７を経過後、制御部２７２は、コイル３１に流す電流値の大きさを一定の割合で徐々に小さくなるように駆動信号Ｄs2の調整を継続する電流下降制御を開始する。これによって、時刻Ｔ７を経過後、コイル３１に流れる電流の大きさは、Ｎ７（Ａ）から一定の割合で徐々に小さくなる。 Then, after time T7, the control unit 272 starts current reduction control to continue adjusting the drive signal Ds2 so that the magnitude of the current value flowing through the coil 31 gradually decreases at a constant rate. As a result, after time T7, the magnitude of the current flowing through the coil 31 gradually decreases from N7(A) at a constant rate.
　これに伴い、可動磁極本体部２３２Ａ、及び第１対向部１３３Ａが帯びる磁気が一定の割合で徐々に小さくなる。そして、時刻Ｔ８において、コイル３１に流れる電流の大きさは、Ｎ８（Ａ）になる。このとき、可動磁極本体部２３２Ａに付与される第１対向部１３３Ａに引き寄せられる力は、圧縮コイルバネ２３４が伸縮方向に最も圧縮された際に押え板部２３２Ｂに付与する弾性力（外力）よりも小さくなる。 Along with this, the magnetism of the movable magnetic pole main body portion 232A and the first opposing portion 133A gradually decreases at a constant rate. Then, at time T8, the magnitude of the current flowing through the coil 31 becomes N8 (A). At this time, the force applied to the movable magnetic pole main body part 232A to be attracted to the first opposing part 133A is greater than the elastic force (external force) applied to the presser plate part 232B when the compression coil spring 234 is most compressed in the expansion/contraction direction. becomes smaller.
　すると、可動磁極本体部２３２Ａは、第１対向部１３３Ａから遠ざかる方向への移動を開始する。このとき、検知部７５は、可動磁極本体部２３２Ａが第１対向部１３３Ａから遠ざかる方向への移動を開始したことを検知する。すると、制御部２７２は、検知部７５の検出結果に基づいて、電流下降制御を終了する。時刻Ｔ７から時刻Ｔ８までの間の期間は、初期期間である。 Then, the movable magnetic pole main body portion 232A starts moving in the direction away from the first opposing portion 133A. At this time, the detection section 75 detects that the movable magnetic pole main body section 232A has started moving in the direction away from the first opposing section 133A. Then, the control section 272 ends the current lowering control based on the detection result of the detection section 75. The period from time T7 to time T8 is an initial period.
＜他の実施形態＞
　なお、今回開示された実施の形態は全ての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は、今回開示された実施の形態に限定されるものではなく、請求の範囲によって示された範囲内又は請求の範囲と均等の範囲内での全ての変更が含まれることが意図される。 <Other embodiments>
It should be noted that the embodiments disclosed herein are illustrative in all respects and should not be considered restrictive. The scope of the present invention is not limited to the embodiments disclosed herein, and is intended to include all modifications within the scope indicated by the claims or within the range equivalent to the claims. be done.
　実施形態１、２とは異なり、駆動部からコイルへ供給する電流を段階的に変化させてもよい。また、実施形態１、２の構成に、駆動部からコイルへ供給する電流を段階的に変化させる構成を加えてもよい。 Unlike Embodiments 1 and 2, the current supplied from the drive unit to the coil may be changed in steps. Furthermore, a configuration may be added to the configurations of Embodiments 1 and 2 in which the current supplied from the drive unit to the coil is changed in stages.
　実施形態１、２では、制御部がマイクロコンピュータを主体として構成されているが、マイクロコンピュータ以外の複数のハードウェア回路によって実現されてもよい。 In the first and second embodiments, the control unit is mainly configured with a microcomputer, but it may be realized with a plurality of hardware circuits other than the microcomputer.
　実施形態１、２とは異なり、検出部に赤外線センサを用いてもよい。これによって、ロッドに磁石を設けなくて済む。 Unlike Embodiments 1 and 2, an infrared sensor may be used as the detection section. This eliminates the need to provide a magnet on the rod.
　実施形態１、２とは異なり、可動磁極部に設けられた永久磁石の磁極の向き、及び対向部における磁極の向きは、軸線方向に対して逆向きであってもよい。 Unlike Embodiments 1 and 2, the direction of the magnetic poles of the permanent magnet provided in the movable magnetic pole part and the direction of the magnetic poles in the opposing part may be opposite to the axial direction.
　実施形態２とは異なり、圧縮コイルバネに代えて、コイルの他端部に可動磁極本体部を引き寄せる向きの磁極を有する永久磁石や、コイルの他端部に可動磁極本体部を移動させる向きに外力を付与する引張りコイルバネを配置してもよい。 Unlike Embodiment 2, instead of using a compression coil spring, a permanent magnet having a magnetic pole in a direction to draw the movable magnetic pole body to the other end of the coil, or an external force in a direction to move the movable magnetic pole body to the other end of the coil is used. A tension coil spring may be arranged to provide the following.
　実施形態１、２において、可動磁極部と対向部との間に緩衝材を設けてもよい。 In Embodiments 1 and 2, a buffer material may be provided between the movable magnetic pole part and the opposing part.
　実施形態１、２とは異なり、所定の大きさの電流増加量が０よりも大きい第１の値と、第１の値よりも大きい第２の値と、の間で変化させてもよい。 Unlike Embodiments 1 and 2, the current increase amount of the predetermined magnitude may be changed between a first value larger than 0 and a second value larger than the first value.
　実施形態１、２とは異なり、電流上昇制御が開始する際に、コイルに流す電流を０（Ａ）から一定の割合で徐々に大きくなるように変化させてもよい。また、電流上昇制御を実行中に、コイルに流れる電流の大きさを変化させず一定の大きさに保つ区間や、コイルに流れる電流の大きさを小さくする区間を設定してもよい。つまり、初期期間の全体にわたってコイルに流れる電流を一定の割合で徐々に大きくしなくてもよい。 Unlike Embodiments 1 and 2, when the current increase control starts, the current flowing through the coil may be changed from 0 (A) to gradually increase at a constant rate. Furthermore, while the current increase control is being executed, a section may be set in which the magnitude of the current flowing through the coil is not changed and maintained at a constant magnitude, or a zone in which the magnitude of the current flowing in the coil is reduced. That is, it is not necessary to gradually increase the current flowing through the coil at a constant rate over the entire initial period.
　実施形態１、２とは異なり、検知部は、ロッドの移動速度を検知する構成としてもよい。 Unlike Embodiments 1 and 2, the detection unit may be configured to detect the moving speed of the rod.
　実施形態１、２とは異なり、ＰＩ演算方式やＰＩＤ演算方式等のフィードバック演算方式を採用しつつ、目標電流値になるようにコイルに流れる電流の大きさを制御してもよい。 Unlike Embodiments 1 and 2, a feedback calculation method such as a PI calculation method or a PID calculation method may be employed while controlling the magnitude of the current flowing through the coil so as to reach the target current value.
３１…コイル
３５…ロッド
３５Ａ…永久磁石
７１…検出部
７４…スイッチング部
７４Ａ…第１スイッチ素子（スイッチ素子）
７４Ｂ…第２スイッチ素子（スイッチ素子）
７４Ｃ…第３スイッチ素子（スイッチ素子）
７４Ｄ…第４スイッチ素子（スイッチ素子）
７５…検知部
９０…電源部
９１…導電路
９２…基準導電路
１００，２００…ソレノイド制御システム
１３０，２３０…ソレノイド
１３２，２３２…可動磁極部
１３２Ａ…永久磁石
１３３…対向部
１３３Ａ…第１対向部（対向部）
１３３Ｂ…第２対向部（対向部）
１７０，２７０…ソレノイド制御装置
１７２，２７２…制御部
１７２Ａ…演算部
１７２Ｂ…ＲＯＭ
２３２Ａ…可動磁極本体部
２３２Ｂ…押え板部
２３４…圧縮コイルバネ
２３６…収容部
Ｃ１，Ｃ２…駆動指令信号
Ｃp1…第１接続点
Ｃp2…第２接続点
Ｄs1，Ｄs2…駆動信号
Ｐd1…逆方向
Ｐd2…所定方向
Ｒ…軸線
Ｖth…移動閾値 31... Coil 35... Rod 35A... Permanent magnet 71... Detection section 74... Switching section 74A... First switch element (switch element)
74B...Second switch element (switch element)
74C...Third switch element (switch element)
74D...Fourth switch element (switch element)
75...Detection section 90...Power supply section 91...Conducting path 92... Reference conducting path 100, 200... Solenoid control system 130, 230... Solenoid 132, 232...Movable magnetic pole section 132A...Permanent magnet 133...Opposing section 133A...First opposing section (opposite part)
133B...Second opposing part (opposing part)
170, 270... Solenoid control device 172, 272... Control section 172A... Arithmetic section 172B... ROM
232A...Movable magnetic pole body part 232B...Press plate part 234...Compression coil spring 236...Accommodating parts C1, C2...Drive command signal Cp1...First connection point Cp2...Second connection point Ds1, Ds2...Drive signal Pd1...Reverse direction Pd2... Predetermined direction R...axis line Vth...movement threshold

Claims (3)

  1. 　コイルと可動磁極部と対向部とを有するとともに、前記対向部に接近する方向及び前記対向部から離間する方向に移動するように前記可動磁極部が変位するソレノイドを制御対象とするソレノイド制御装置であって、
    　前記コイルに流す電流を制御する制御部を有し、
    　前記制御部は、前記可動磁極部が前記対向部から離間する方向に移動を開始するまでの初期期間において、前記コイルに流れる電流値が徐々に大きくなるように前記コイルに流れる電流を調整する電流上昇制御を実行するソレノイド制御装置。     A solenoid control device that controls a solenoid that has a coil, a movable magnetic pole part, and a facing part, and in which the movable magnetic pole part is displaced so as to move in a direction toward the facing part and in a direction away from the facing part. There it is,
    comprising a control unit that controls the current flowing through the coil,
    The control unit adjusts the current flowing through the coil so that the value of the current flowing through the coil gradually increases during an initial period until the movable magnetic pole part starts moving in a direction away from the opposing part. Solenoid control device that performs lift control.
  2. 　前記可動磁極部の移動の開始を検出する検知部を有し、
    　前記初期期間は、前記コイルへの電流供給を開始する時から、前記検知部が前記可動磁極部の移動開始を検出する時までの間であり、
    　前記制御部は、前記初期期間において前記電流上昇制御を実行する請求項１に記載のソレノイド制御装置。     comprising a detection unit that detects the start of movement of the movable magnetic pole part,
    The initial period is from the time when current supply to the coil is started until the time when the detection unit detects the start of movement of the movable magnetic pole part,
    The solenoid control device according to claim 1, wherein the control unit executes the current increase control during the initial period.
  3. 　前記可動磁極部が移動を開始する前には、前記対向部と前記可動磁極部とが磁力によって吸着している請求項１又は請求項２に記載のソレノイド制御装置。 The solenoid control device according to claim 1 or 2, wherein the opposing portion and the movable magnetic pole portion are attracted to each other by magnetic force before the movable magnetic pole portion starts moving.
PCT/JP2022/029265 2022-07-29 2022-07-29 Solenoid control device WO2024024078A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011023588A (en) * 2009-07-16 2011-02-03 Ricoh Co Ltd Driving device of solenoid, image forming apparatus, paper processing apparatus, method of controlling solenoid, and solenoid controlling program
JP2018019043A (en) * 2016-07-29 2018-02-01 キヤノンファインテックニスカ株式会社 Solenoid drive device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011023588A (en) * 2009-07-16 2011-02-03 Ricoh Co Ltd Driving device of solenoid, image forming apparatus, paper processing apparatus, method of controlling solenoid, and solenoid controlling program
JP2018019043A (en) * 2016-07-29 2018-02-01 キヤノンファインテックニスカ株式会社 Solenoid drive device

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