WO2020003356A1 - Elevator control system - Google Patents

Elevator control system Download PDF

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Publication number
WO2020003356A1
WO2020003356A1 PCT/JP2018/024047 JP2018024047W WO2020003356A1 WO 2020003356 A1 WO2020003356 A1 WO 2020003356A1 JP 2018024047 W JP2018024047 W JP 2018024047W WO 2020003356 A1 WO2020003356 A1 WO 2020003356A1
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WO
WIPO (PCT)
Prior art keywords
brake
electric motor
control device
control system
operation control
Prior art date
Application number
PCT/JP2018/024047
Other languages
French (fr)
Japanese (ja)
Inventor
涼 大島
Original Assignee
三菱電機株式会社
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.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to CN201880093575.9A priority Critical patent/CN112292341B/en
Priority to PCT/JP2018/024047 priority patent/WO2020003356A1/en
Priority to JP2020526736A priority patent/JP6912006B2/en
Publication of WO2020003356A1 publication Critical patent/WO2020003356A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
    • B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
    • B66B1/32—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on braking devices, e.g. acting on electrically controlled brakes

Definitions

  • the present invention relates to an elevator control system.
  • Patent Document 1 describes an example of an elevator control system.
  • the control system controls the brake.
  • the armature of the brake is connected to the brake shoe.
  • the control system suppresses the noise generated when the brake shoe collides with the brake drum by reducing the speed at which the gap between the brake shoe and the brake drum closes based on the information on the speed of the armature.
  • An object of the present invention is to provide a control system capable of suppressing brake wear.
  • An elevator control system includes a power supply device that supplies power to an electric motor that raises and lowers an elevator car, a brake switch that detects an operation state of a brake that brakes the electric motor, and a brake switch that detects braking of the brake. And an operation control device for interrupting the supply of power from the power supply device to the electric motor after a lapse of the standby time.
  • the elevator control system supplies power to the power supply device, and the power supply device supplies power to the electric motor that moves the elevator car up and down.
  • the brake switch detects an operating state of a brake that brakes the electric motor.
  • the operation control device cuts off the supply of power from the power supply device to the electric motor after a standby time has elapsed since the brake switch detected the braking of the brake. Thereby, wear of the brake is suppressed.
  • FIG. 1 is a configuration diagram of an elevator to which a control system according to Embodiment 1 is applied.
  • FIG. 2 is a configuration diagram of a control system according to the first embodiment.
  • 5 is a flowchart illustrating an example of an operation of the control system according to the first embodiment.
  • FIG. 2 is a diagram showing a hardware configuration of a main part of the control system according to the first embodiment.
  • 9 is a flowchart illustrating an example of an operation of the control system according to the second embodiment.
  • FIG. 1 is a configuration diagram of an elevator to which the control system according to Embodiment 1 is applied.
  • the control system 1 is applied to the elevator 2.
  • the elevator 2 is provided in a building.
  • the building has multiple floors.
  • the hoistway passes through each floor of the building.
  • the elevator 2 includes a hoist 3, a main rope 4, a car 5, a counterweight 6, and a brake 7.
  • the hoisting machine 3 is provided on the hoistway.
  • the hoist 3 includes an electric motor 8 and a sheave 9.
  • the electric motor 8 is a device that receives power supply and rotates a rotating shaft.
  • the power supplied to the motor 8 is, for example, three-phase AC power.
  • the control of the motor 8 is performed, for example, by controlling the voltage or frequency of the supplied three-phase AC power.
  • the sheave 9 is a device that rotates following the rotation axis of the electric motor 8.
  • the main rope 4 is wound around the sheave 9 so as to be able to move following the rotation of the sheave 9.
  • the car 5 is provided on the hoistway.
  • the car 5 holds one end of the main rope 4 so that the car 5 can move up and down following the movement of the main rope 4 inside the hoistway.
  • the counterweight 6 is provided on the hoistway. The counterweight 6 holds the other end of the main rope 4 so that it can move up and down following the movement of the main rope 4 inside the hoistway.
  • the brake 7 is a device that brakes the elevation of the car 5 when the car 5 is stopped.
  • the brake 7 includes, for example, a brake drum 10, a brake shoe 11, a brake coil 12, an armature 13, a brake arm 14, a spring 15, a displacement sensor 16, and a brake control device 17.
  • the brake drum 10 is provided on the rotating shaft of the electric motor 8 so as to be able to rotate in synchronization with the rotating shaft of the electric motor 8.
  • the brake drum 10 is, for example, a disk-shaped member.
  • the brake shoe 11 faces the outer surface of the brake drum 10.
  • the brake coil 12 is a device that generates a magnetic field when energized.
  • the armature 13 is a device that is displaced by a magnetic field generated by the brake coil 12.
  • the brake arm 14 is connected to the brake shoe 11 so that the brake shoe 11 can contact the outer surface of the brake drum 10.
  • the other end of the brake arm 14 contacts the armature 13 so that the displacement of the armature 13 can be transmitted to the brake shoe 11.
  • the spring 15 is provided on, for example, the brake arm 14 so that the brake shoe 11 can be pressed against the outer surface of the brake drum 10 by an elastic force.
  • the displacement sensor 16 is provided on the armature 13.
  • the displacement sensor 16 is a device that detects a displacement of the armature 13.
  • the brake control device 17 is a device that controls the operation of the brake 7.
  • the control system 1 includes an encoder 18, a brake switch 19, an operation control device 20, and a power conversion device 21.
  • the encoder 18 is a device that detects a change in the rotation angle of the rotating shaft of the electric motor 8.
  • the encoder 18 is provided on a rotating shaft of the electric motor 8.
  • the encoder 18 includes, for example, an element that outputs a pulse signal according to a change in the rotation angle of the rotation shaft of the electric motor 8.
  • the brake switch 19 is a device that detects the operation state of the brake 7.
  • the operation state of the brake 7 includes braking and releasing the brake 7.
  • the brake switch 19 includes, for example, a mechanism that detects an operating state of the brake 7 by detecting a mechanical displacement of a part of the brake 7.
  • the displacement detected by the brake switch 19 is, for example, the displacement of the brake arm 14 by the armature 13.
  • the brake switch 19 is provided on the brake arm 14, for example.
  • the brake switch 19 is in the ON state.
  • the brake switch 19 is in the OFF state. By switching from the ON state to the OFF state, the brake switch 19 detects the start of braking of the brake 7.
  • the operation control device 20 is connected to the encoder 18 so as to receive a signal indicating a change in the rotation angle of the rotation shaft of the electric motor 8.
  • the operation control device 20 is connected to the brake switch 19 so as to receive a signal indicating the operation state of the brake 7.
  • the operation control device 20 is connected to the brake 7 so that a control signal can be transmitted.
  • the operation control device 20 is connected to the power conversion device 21 so that a control signal can be transmitted.
  • the operation control device 20 includes a timer.
  • the operation control device 20 stores the delay time To.
  • the initial value of the delay time To is set in advance.
  • the power converter 21 is connected to an external power supply.
  • the power conversion device 21 includes an element or a circuit that converts power supplied from an external power supply into three-phase AC power based on a control signal received from the operation control device 20.
  • the power converter 21 is connected to the electric motor 8 so that three-phase AC power can be supplied to the electric motor 8.
  • the power conversion device 21 is an example of a power supply device.
  • the operation control device 20 In operation of the elevator 2, the operation control device 20 generates a torque command.
  • the torque command is a command corresponding to a control target value of the torque generated by the electric motor 8.
  • the operation control device 20 transmits a control signal representing the generated torque command to the power conversion device 21.
  • the power converter 21 converts power supplied from an external power supply into three-phase AC power based on the received control signal.
  • the power converter 21 supplies the converted three-phase AC power to the electric motor 8.
  • the electric motor 8 rotates the rotating shaft by receiving the supply of the electric power.
  • the sheave 9 rotates following the rotation axis of the electric motor 8.
  • the car 5 moves up and down following the movement of the main rope 4 inside the hoistway.
  • the counterweight 6 moves up and down following the movement of the main rope 4 inside the hoistway.
  • the encoder 18 detects a change in the rotation angle of the rotation shaft of the electric motor 8.
  • the encoder 18 outputs a pulse signal corresponding to a change in the rotation angle of the rotating shaft of the electric motor 8 as a signal indicating a change in the rotation angle of the rotating shaft of the electric motor 8.
  • the operation control device 20 receives from the encoder 18 a signal indicating a change in the rotation angle of the rotation shaft of the electric motor 8.
  • the operation control device 20 acquires information on the rotation speed of the electric motor 8 from the received signal.
  • the operation control device 20 generates a torque command such that the rotation speed of the electric motor 8 matches the rotation speed indicated by the speed command.
  • the speed command is a command that indicates a rotation speed corresponding to a control target value of the speed at which the car 5 moves up and down.
  • the operation control device 20 does not generate a braking command.
  • the brake coil 12 When the brake 7 has not received a control signal indicating a braking command from the operation control device 20, the brake coil 12 generates a magnetic field by energization.
  • the armature 13 is displaced by a magnetic field generated by the brake coil 12 against the elastic force of the spring 15.
  • the displacement of the armature 13 is transmitted from the brake arm 14 to the brake shoe 11.
  • the brake shoe 11 is separated from the outer surface of the brake drum 10.
  • the operation state of the brake 7 is release.
  • the brake switch 19 detects that the brake 7 has been released.
  • the brake switch 19 is in the ON state.
  • the operation control device 20 transmits a control signal indicating a braking command to the brake 7.
  • an unbalanced torque is applied to the sheave 9 of the hoisting machine 3.
  • the unbalanced torque is a torque generated by a difference between the weight of the car 5 and the passenger riding the car 5 and the weight of the counterweight 6.
  • the electric motor 8 of the hoisting machine 3 holds the rotating shaft without rotating by the torque generated by the electric power supplied from the electric power converter 21.
  • the encoder 18 does not output a pulse signal.
  • the brake 7 cuts off the power supply to the brake coil 12.
  • the brake coil 12 does not generate a magnetic field.
  • the brake shoe 11 approaches the outer surface of the brake drum 10 by the elastic force of the spring 15.
  • the displacement sensor 16 detects a displacement of the armature 13.
  • the displacement sensor 16 transmits a signal indicating the detected displacement to, for example, the brake control device 17.
  • the brake control device 17 acquires information on the speed of the armature 13 from the received signal.
  • the brake control device 17 generates a magnetic field in the brake coil 12 so as to adjust the speed of the displacement of the armature 13 based on the acquired information on the speed of the armature 13, so that the brake Reduce the speed at which the gap closes.
  • the brake shoe 11 contacts the outer surface of the brake drum 10.
  • the operation state of the brake 7 is braking.
  • the brake switch 19 is turned off.
  • the brake switch 19 detects the start of braking of the brake 7.
  • the operation control device 20 starts counting the timer when the brake switch 19 is turned off. The timer continues counting until the delay time To stored in the operation control device 20 is reached.
  • the brake shoe 11 While the timer continues counting, the brake shoe 11 is pressed against the outer surface of the brake drum 10 by the elastic force of the spring 15. The pressure with which the brake shoe 11 is pressed against the outer surface of the brake drum 10 gradually increases. As the pressure increases, the torque of the brake 7 gradually increases.
  • the operation control device 20 transmits a control signal indicating power supply cutoff to the power conversion device 21. Based on the received control signal, power converter 21 cuts off the supply of power to electric motor 8. The electric motor 8 to which the supply of electric power is cut off does not generate torque. The operation control device 20 resets the count of the timer. The operation control device 20 restarts counting of the timer.
  • the sheave 9 of the hoist 3 rotates by the unbalanced torque.
  • the rotating shaft of the hoist 3 rotates together with the sheave 9.
  • the brake drum 10 rotates in synchronization with the rotation shaft while being in contact with the brake shoe 11.
  • the encoder 18 detects a change in the rotation angle of the rotation shaft.
  • the encoder 18 outputs a pulse signal corresponding to a change in the rotation angle of the rotating shaft of the electric motor 8 as a signal indicating a change in the rotation angle of the rotating shaft of the electric motor 8.
  • the operation control device 20 receives from the encoder 18 a signal indicating a change in the rotation angle of the rotation shaft of the electric motor 8.
  • the brake shoe 11 is further pressed against the outer surface of the brake drum 10 by the elastic force of the spring 15.
  • the pressure at which the brake shoe 11 is pressed against the outer surface of the brake drum 10 further increases.
  • the torque of the brake 7 further increases.
  • the rotation of the sheave 9 stops.
  • the encoder 18 does not output a pulse signal.
  • the operation control device 20 acquires the count of the timer when the pulse signal is no longer output from the encoder 18 as the measurement time ⁇ T.
  • the operation control device 20 updates the stored delay time To as To + ⁇ T based on the measurement time ⁇ T.
  • the operation control device 20 transmits a control signal indicating a braking command to the brake 7.
  • the electric motor 8 of the hoisting machine 3 holds the rotating shaft without rotating by the torque generated by the electric power supplied from the electric power converter 21.
  • the operation state of the brake 7 becomes braking.
  • the brake switch 19 is turned off.
  • the brake switch 19 detects the start of braking of the brake 7.
  • the operation control device 20 starts counting the timer when the brake switch 19 is turned off. The timer continues counting until the updated delay time To stored in the operation control device 20 is reached.
  • FIG. 2 is a configuration diagram of the control system according to the first embodiment.
  • FIG. 3 is a flowchart illustrating an example of an operation of the control system according to the first embodiment.
  • the operation control device 20 transmits a control signal indicating the generated torque command to the power conversion device 21.
  • the power converter 21 converts power supplied from an external power supply into three-phase AC power based on the received control signal.
  • the power converter 21 supplies the converted three-phase AC power to the electric motor 8.
  • the electric motor 8 receives the supply of electric power and rotates the rotating shaft.
  • the encoder 18 detects a change in the rotation angle of the rotation shaft of the electric motor 8.
  • the operation control device 20 generates a torque command based on the change in the rotation angle and the speed command detected by the encoder 18.
  • the car 5 moves up and down inside the hoistway according to the speed of up and down corresponding to the speed command. Thereafter, the car 5 stops at the landing position.
  • step S1 of FIG. 3 the operation control device 20 detects that the car 5 has stopped at the landing position. Thereafter, the operation of the control system 1 proceeds to Step S2.
  • step S2 the operation control device 20 transmits a signal indicating a braking command to the brake 7. Thereafter, the operation of the control system 1 proceeds to Step S3.
  • step S3 the operation control device 20 determines whether the brake switch 19 is in the ON state. When the result of the determination is Yes, the operation of the control system 1 proceeds to step S3 again. When the determination result is No, the operation control device 20 starts counting the timer. Thereafter, the operation of the control system 1 proceeds to Step S4.
  • step S4 the operation control device 20 determines whether the count of the timer has reached the delay time To. When the determination result is No, the operation of the control system 1 proceeds to step S4 again. When the determination result is Yes, the operation control device 20 resets the count of the timer. Thereafter, the operation of the control system 1 proceeds to Step S5.
  • step S5 the operation control device 20 transmits a control signal indicating power supply cutoff to the power conversion device 21. After that, the power converter 21 cuts off the supply of power to the electric motor 8. Thereafter, the operation control device 20 restarts counting of the timer. Thereafter, the operation control device 20 acquires the count of the timer when the pulse signal is no longer output from the encoder 18 as the measurement time ⁇ T. Thereafter, the operation of the control system 1 proceeds to Step S6.
  • step S6 the operation control device 20 updates the stored delay time To with the measurement time ⁇ T. Thereafter, the operation of the control system 1 ends.
  • the control system 1 includes the power conversion device 21, the brake switch 19, and the operation control device 20.
  • the power converter 21 supplies electric power to the electric motor 8.
  • the electric motor 8 raises and lowers the car 5 of the elevator 2.
  • the brake switch 19 detects an operation state of the brake 7.
  • the brake 7 brakes the electric motor 8.
  • the operation control device 20 causes the power conversion device 21 to cut off the supply of power to the electric motor 8.
  • the control system 1 also includes the encoder 18.
  • the encoder 18 detects a change in the rotation angle of the rotation shaft of the electric motor 8.
  • the operation control device 20 measures a measurement time ⁇ T from when the power conversion device 21 cuts off the power supply to the electric motor 8 until the encoder 18 stops detecting the change in the rotation angle.
  • the operation control device 20 updates the delay time To with the measured measurement time ⁇ T.
  • the operation control device 20 measures the measurement time ⁇ T from when the delay time To elapses to when the torque of the brake 7 reaches the unbalanced torque.
  • the operation control device 20 updates the delay time To with the measurement time ⁇ T.
  • the operation control device 20 adjusts the delay time To so as to suppress the rotation of the brake drum 10 in a state where the brake shoe 11 is in contact. Thus, wear of the brake 7 is suppressed.
  • the delay time To is adjusted based on the measurement time ⁇ T measured by the output of the encoder 18. Therefore, even when the state of the brake 7 changes due to elapse of time or the like, wear of the brake 7 is suppressed. Since the delay time To is adjusted based on the measurement time ⁇ T, there is no need for tuning by maintenance personnel or the like.
  • the brake 7 may be, for example, a disc brake.
  • the brake 7 includes, for example, a brake disk and a pair of brake pads.
  • the brake disk is provided on the rotating shaft of the electric motor 8 so as to be able to rotate in synchronization with the rotating shaft of the electric motor 8.
  • One of the pair of brake pads is provided on one side of the brake disc.
  • the other of the pair of brake pads is provided on the other side of the brake disc.
  • the brake arm 14 transmits the displacement of the armature 13 to each of the pair of brake pads.
  • the brake 7 brakes the electric motor 8 by sandwiching a brake disc between a pair of brake pads.
  • the brake 7 may include a displacement sensor that detects a displacement of the brake arm 14 or the brake shoe 11 or the like.
  • the brake 7 may include a speed sensor that detects the speed of the armature 13, the brake arm 14, the brake shoe 11, or the like.
  • the encoder 18 may directly detect a change in the rotation angle of the rotation shaft of the electric motor 8.
  • the encoder 18 may detect a rotation position of a rotation shaft of the electric motor 8.
  • the encoder 18 may indirectly detect a change in the rotation angle of the rotation shaft of the electric motor 8 based on the detected rotation position.
  • the operation control device 20 does not need to update the delay time To when the encoder 18 does not detect a change in the rotation angle after the power conversion device 21 shuts off the power supply to the electric motor 8.
  • FIG. 4 is a diagram illustrating a hardware configuration of a main part of the control system according to the first embodiment.
  • Each function of the control system 1 can be realized by a processing circuit.
  • the processing circuit includes at least one processor 1b and at least one memory 1c.
  • the processing circuit may include at least one dedicated hardware 1a together with or as a substitute for the processor 1b and the memory 1c.
  • each function of the control system 1 is realized by software, firmware, or a combination of software and firmware. At least one of software and firmware is described as a program.
  • the program is stored in the memory 1c.
  • the processor 1b implements each function of the control system 1 by reading and executing a program stored in the memory 1c.
  • the processor 1b is also referred to as a CPU (Central Processing Unit), a processing device, an arithmetic device, a microprocessor, a microcomputer, or a DSP.
  • the memory 1c includes, for example, a nonvolatile or volatile semiconductor memory such as a RAM, a ROM, a flash memory, an EPROM, and an EEPROM, a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, and a DVD.
  • a nonvolatile or volatile semiconductor memory such as a RAM, a ROM, a flash memory, an EPROM, and an EEPROM, a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, and a DVD.
  • the processing circuit includes the dedicated hardware 1a
  • the processing circuit is realized by, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof.
  • Each function of the control system 1 can be realized by a processing circuit.
  • each function of the control system 1 can be realized by a processing circuit collectively.
  • a part of each function of the control system 1 may be realized by dedicated hardware 1a, and the other part may be realized by software or firmware.
  • the processing circuit implements each function of the control system 1 by hardware 1a, software, firmware, or a combination thereof.
  • the function of the brake control device 17 may be realized by hardware common to the control system 1 or the like.
  • Embodiment 2 FIG. In the second embodiment, points different from the example disclosed in the first embodiment will be described in detail. As for features not described in the second embodiment, any of the features disclosed in the first embodiment may be adopted.
  • FIG. 5 is a flowchart illustrating an example of an operation of the control system according to the second embodiment.
  • control system 1 according to the second embodiment operates in the same manner as the control system 1 according to the first embodiment from step S1 to step S6. After updating the delay time To stored in the operation control device 20 in step S6, the operation of the control system 1 according to the second embodiment proceeds to step S7.
  • step S7 the operation control device 20 determines whether the updated delay time To is longer than a predetermined abnormality detection time.
  • the operation of the control system 1 proceeds to step S8.
  • the result of the determination is No, the operation of the control system 1 ends.
  • step S8 the operation control device 20 detects an abnormality of the brake 7. Thereafter, the operation control device 20 disables the use of the elevator 2. Thereafter, the operation of the control system 1 ends.
  • the operation control device 20 detects the abnormality of the brake 7.
  • the operation control device 20 can detect an abnormality of the brake 7 during operation.
  • the operation control device 20 When detecting an abnormality of the brake 7, the operation control device 20 disables the use of the elevator 2.
  • the operation control device 20 disables the use of the elevator 2 when an abnormality has occurred in the brake 7.
  • the operation of the elevator 2 in a state where the abnormality of the brake 7 has occurred is prevented beforehand.
  • the operation control device 20 may report information of the detected abnormality to, for example, a facility or facility that manages information of the elevator 2.
  • the operation control device 20 may disable the use of the elevator 2 by, for example, not generating a torque command.
  • the operation control device 20 may transmit a control signal indicating an abnormality of the brake 7 to, for example, a device that receives a call from a user. At this time, the device or the like that has received the control signal does not accept the call from the user. As a result, the use of the elevator 2 becomes impossible.
  • control system according to the present invention can be applied to an elevator.
  • 1 control system 1a hardware, 1b processor, 1c memory, 2 elevator, 3 hoist, 4 main rope, 5 car, 6 balance weight, 7 brake, 8 electric motor, 9 sheave, 10 brake drum, 11 brake shoe , ⁇ 12 ⁇ brake coil, ⁇ 13 ⁇ armature, ⁇ 14 ⁇ brake arm, ⁇ 15 ⁇ spring, ⁇ 16 ⁇ displacement sensor, ⁇ 17 ⁇ brake controller, ⁇ 18 ⁇ encoder, ⁇ 19 ⁇ brake switch, ⁇ 20 ⁇ operation controller, ⁇ 21 ⁇ power converter

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Elevator Control (AREA)
  • Braking Arrangements (AREA)

Abstract

The purpose of the present invention is to provide a control system (1) to reduce brake (7) wear. The control system (1) comprises a power conversion device (21), a brake switch (19), and an operation control device (20). The power conversion device (21) supplies power to an electric motor (8). The electric motor (8) raises and lowers a car (5) of an elevator (2). The brake switch (19) detects the operation state of the brake (7). The brake (7) brakes the electric motor (8). The operation control device (20) causes the power conversion device (21) to block supply of power to the electric motor (8) after a delay time To from when the brake switch (19) detects that the brake (7) is braking has passed.

Description

エレベーターの制御システムElevator control system
　本発明は、エレベーターの制御システムに関する。 The present invention relates to an elevator control system.
　特許文献１にエレベーターの制御システムの例が記載されている。制御システムは、ブレーキを制御する。ブレーキのアーマチュアは、ブレーキシューに連結される。制御システムは、アーマチュアの速度の情報に基づいてブレーキシューとブレーキドラムとの間の間隙が閉じる速度を遅くすることで、ブレーキシューがブレーキドラムに衝突する際に発生する騒音を抑制する。 Patent Document 1 describes an example of an elevator control system. The control system controls the brake. The armature of the brake is connected to the brake shoe. The control system suppresses the noise generated when the brake shoe collides with the brake drum by reducing the speed at which the gap between the brake shoe and the brake drum closes based on the information on the speed of the armature.
日本特開２００４－１１５２０３号公報Japanese Patent Application Laid-Open No. 2004-115203
　しかしながら、特許文献１に記載の制御システムによって、ブレーキのトルクは徐々に大きくなる。このため、エレベーターの巻上機の電動機に供給される電力は、ブレーキのトルクが大きくなる前に遮断されることがある。このとき、ブレーキシューとブレーキドラムが接触した状態で、ブレーキドラムが回転することがある。この場合、ブレーキが磨耗する。 However, the torque of the brake is gradually increased by the control system described in Patent Document 1. For this reason, the electric power supplied to the motor of the hoist of the elevator may be cut off before the torque of the brake increases. At this time, the brake drum may rotate with the brake shoe in contact with the brake drum. In this case, the brake is worn.
　本発明は、このような課題を解決するためになされた。本発明の目的は、ブレーキの磨耗を抑えられる制御システムを提供することである。 The present invention has been made to solve such problems. An object of the present invention is to provide a control system capable of suppressing brake wear.
　本発明に係るエレベーターの制御システムは、エレベーターのかごを昇降させる電動機に電力を供給する電力供給装置と、電動機を制動するブレーキの作動状態を検出するブレーキスイッチと、ブレーキスイッチがブレーキの制動を検出してから待機時間が経過した後に電力供給装置から電動機への電力の供給を遮断する運転制御装置と、を備える。 An elevator control system according to the present invention includes a power supply device that supplies power to an electric motor that raises and lowers an elevator car, a brake switch that detects an operation state of a brake that brakes the electric motor, and a brake switch that detects braking of the brake. And an operation control device for interrupting the supply of power from the power supply device to the electric motor after a lapse of the standby time.
　本発明によれば、エレベーターの制御システムは、電力供給装置と、電力供給装置は、エレベーターのかごを昇降させる電動機に電力を供給する。ブレーキスイッチは、電動機を制動するブレーキの作動状態を検出する。運転制御装置は、ブレーキスイッチがブレーキの制動を検出してから待機時間が経過した後に電力供給装置から電動機への電力の供給を遮断する。これにより、ブレーキの磨耗が抑えられる。 According to the present invention, the elevator control system supplies power to the power supply device, and the power supply device supplies power to the electric motor that moves the elevator car up and down. The brake switch detects an operating state of a brake that brakes the electric motor. The operation control device cuts off the supply of power from the power supply device to the electric motor after a standby time has elapsed since the brake switch detected the braking of the brake. Thereby, wear of the brake is suppressed.
実施の形態１に係る制御システムが適用されるエレベーターの構成図である。1 is a configuration diagram of an elevator to which a control system according to Embodiment 1 is applied. 実施の形態１に係る制御システムの構成図である。FIG. 2 is a configuration diagram of a control system according to the first embodiment. 実施の形態１に係る制御システムの動作の例を示すフローチャートである。5 is a flowchart illustrating an example of an operation of the control system according to the first embodiment. 実施の形態１に係る制御システムの主要部のハードウェア構成を示す図である。FIG. 2 is a diagram showing a hardware configuration of a main part of the control system according to the first embodiment. 実施の形態２に係る制御システムの動作の例を示すフローチャートである。9 is a flowchart illustrating an example of an operation of the control system according to the second embodiment.
　本発明を実施するための形態について添付の図面を参照しながら説明する。各図において、同一または相当する部分には同一の符号を付して、重複する説明は適宜に簡略化または省略する。 A mode for carrying out the present invention will be described with reference to the accompanying drawings. In the drawings, the same or corresponding portions are denoted by the same reference characters, and overlapping description will be appropriately simplified or omitted.
　実施の形態１．
　図１は、実施の形態１に係る制御システムが適用されるエレベーターの構成図である。 Embodiment 1 FIG.
FIG. 1 is a configuration diagram of an elevator to which the control system according to Embodiment 1 is applied.
　制御システム１は、エレベーター２に適用される。エレベーター２は、建築物に設けられる。建築物は、複数の階を有する。エレベーター２において、昇降路は、建築物の各階を貫く。エレベーター２は、巻上機３と、主ロープ４と、かご５と、釣合重り６と、ブレーキ７と、を備える。 The control system 1 is applied to the elevator 2. The elevator 2 is provided in a building. The building has multiple floors. In the elevator 2, the hoistway passes through each floor of the building. The elevator 2 includes a hoist 3, a main rope 4, a car 5, a counterweight 6, and a brake 7.
　巻上機３は、昇降路に設けられる。巻上機３は、電動機８と、シーブ９と、を備える。電動機８は、電力の供給を受けて回転軸を回転させる機器である。電動機８に供給される電力は、例えば三相交流電力である。電動機８の制御は、例えば供給される三相交流電力の電圧または周波数などの制御によって行われる。シーブ９は、電動機８の回転軸に追従して回転する機器である。 The hoisting machine 3 is provided on the hoistway. The hoist 3 includes an electric motor 8 and a sheave 9. The electric motor 8 is a device that receives power supply and rotates a rotating shaft. The power supplied to the motor 8 is, for example, three-phase AC power. The control of the motor 8 is performed, for example, by controlling the voltage or frequency of the supplied three-phase AC power. The sheave 9 is a device that rotates following the rotation axis of the electric motor 8.
　主ロープ４は、シーブ９の回転に追従して移動しうるように、シーブ９に巻きかけられる。 The main rope 4 is wound around the sheave 9 so as to be able to move following the rotation of the sheave 9.
　かご５は、昇降路に設けられる。かご５は、昇降路の内部において主ロープ４の移動に追従して昇降しうるように、主ロープ４の一端を保持する。釣合重り６は、昇降路に設けられる。釣合重り６は、昇降路の内部において主ロープ４の移動に追従して昇降しうるように、主ロープ４の他端を保持する。 The car 5 is provided on the hoistway. The car 5 holds one end of the main rope 4 so that the car 5 can move up and down following the movement of the main rope 4 inside the hoistway. The counterweight 6 is provided on the hoistway. The counterweight 6 holds the other end of the main rope 4 so that it can move up and down following the movement of the main rope 4 inside the hoistway.
　ブレーキ７は、かご５が停止しているときなどにかご５の昇降を制動する装置である。ブレーキ７は、例えば、ブレーキドラム１０と、ブレーキシュー１１と、ブレーキコイル１２と、アーマチュア１３と、ブレーキアーム１４と、バネ１５と、変位センサー１６と、ブレーキ制御装置１７と、を備える。ブレーキドラム１０は、電動機８の回転軸と同期して回転しうるように、電動機８の回転軸に設けられる。ブレーキドラム１０は、例えば円盤状の部材である。ブレーキシュー１１は、ブレーキドラム１０の外面に対向する。ブレーキコイル１２は、通電によって磁界を発生させる機器である。アーマチュア１３は、ブレーキコイル１２が発生させる磁界によって変位する機器である。ブレーキアーム１４の一端は、ブレーキシュー１１をブレーキドラム１０の外面に接触させうるように、ブレーキシュー１１に連結される。ブレーキアーム１４の他端は、アーマチュア１３の変位をブレーキシュー１１に伝達しうるように、アーマチュア１３に接触する。バネ１５は、弾性力によりブレーキシュー１１をブレーキドラム１０の外面に押し付けうるように、例えばブレーキアーム１４に設けられる。変位センサー１６は、アーマチュア１３に設けられる。変位センサー１６は、アーマチュア１３の変位を検出する機器である。ブレーキ制御装置１７は、ブレーキ７の動作を制御する装置である。 The brake 7 is a device that brakes the elevation of the car 5 when the car 5 is stopped. The brake 7 includes, for example, a brake drum 10, a brake shoe 11, a brake coil 12, an armature 13, a brake arm 14, a spring 15, a displacement sensor 16, and a brake control device 17. The brake drum 10 is provided on the rotating shaft of the electric motor 8 so as to be able to rotate in synchronization with the rotating shaft of the electric motor 8. The brake drum 10 is, for example, a disk-shaped member. The brake shoe 11 faces the outer surface of the brake drum 10. The brake coil 12 is a device that generates a magnetic field when energized. The armature 13 is a device that is displaced by a magnetic field generated by the brake coil 12. One end of the brake arm 14 is connected to the brake shoe 11 so that the brake shoe 11 can contact the outer surface of the brake drum 10. The other end of the brake arm 14 contacts the armature 13 so that the displacement of the armature 13 can be transmitted to the brake shoe 11. The spring 15 is provided on, for example, the brake arm 14 so that the brake shoe 11 can be pressed against the outer surface of the brake drum 10 by an elastic force. The displacement sensor 16 is provided on the armature 13. The displacement sensor 16 is a device that detects a displacement of the armature 13. The brake control device 17 is a device that controls the operation of the brake 7.
　制御システム１は、エンコーダー１８と、ブレーキスイッチ１９と、運転制御装置２０と、電力変換装置２１と、を備える。 The control system 1 includes an encoder 18, a brake switch 19, an operation control device 20, and a power conversion device 21.
　エンコーダー１８は、電動機８の回転軸の回転角の変化を検出する装置である。エンコーダー１８は、電動機８の回転軸に設けられる。エンコーダー１８は、例えば電動機８の回転軸の回転角の変化に応じてパルス信号を出力する素子を搭載する。 The encoder 18 is a device that detects a change in the rotation angle of the rotating shaft of the electric motor 8. The encoder 18 is provided on a rotating shaft of the electric motor 8. The encoder 18 includes, for example, an element that outputs a pulse signal according to a change in the rotation angle of the rotation shaft of the electric motor 8.
　ブレーキスイッチ１９は、ブレーキ７の作動状態を検出する装置である。ブレーキ７の作動状態は、ブレーキ７の制動および解放を含む。ブレーキスイッチ１９は、例えばブレーキ７の一部の機械的な変位を検出することによってブレーキ７の作動状態を検出する機構を備える。ブレーキスイッチ１９が検出する変位は、例えば、アーマチュア１３によるブレーキアーム１４の変位である。ブレーキスイッチ１９は、例えばブレーキアーム１４に設けられる。ブレーキ７の解放を検出しているとき、ブレーキスイッチ１９は、ＯＮ状態である。ブレーキ７の制動を検出しているとき、ブレーキスイッチ１９は、ＯＦＦ状態である。ＯＮ状態からＯＦＦ状態への切り替わりによって、ブレーキスイッチ１９は、ブレーキ７の制動の開始を検出する。 The brake switch 19 is a device that detects the operation state of the brake 7. The operation state of the brake 7 includes braking and releasing the brake 7. The brake switch 19 includes, for example, a mechanism that detects an operating state of the brake 7 by detecting a mechanical displacement of a part of the brake 7. The displacement detected by the brake switch 19 is, for example, the displacement of the brake arm 14 by the armature 13. The brake switch 19 is provided on the brake arm 14, for example. When the release of the brake 7 is detected, the brake switch 19 is in the ON state. When the braking of the brake 7 is detected, the brake switch 19 is in the OFF state. By switching from the ON state to the OFF state, the brake switch 19 detects the start of braking of the brake 7.
　運転制御装置２０は、電動機８の回転軸の回転角の変化を表す信号を受信しうるように、エンコーダー１８に接続される。運転制御装置２０は、ブレーキ７の作動状態を表す信号を受信しうるように、ブレーキスイッチ１９に接続される。運転制御装置２０は、制御信号を送信しうるように、ブレーキ７に接続される。運転制御装置２０は、制御信号を送信しうるように、電力変換装置２１に接続される。運転制御装置２０は、タイマーを備える。運転制御装置２０は、遅れ時間Ｔｏを記憶する。遅れ時間Ｔｏの初期値は、予め設定される。 The operation control device 20 is connected to the encoder 18 so as to receive a signal indicating a change in the rotation angle of the rotation shaft of the electric motor 8. The operation control device 20 is connected to the brake switch 19 so as to receive a signal indicating the operation state of the brake 7. The operation control device 20 is connected to the brake 7 so that a control signal can be transmitted. The operation control device 20 is connected to the power conversion device 21 so that a control signal can be transmitted. The operation control device 20 includes a timer. The operation control device 20 stores the delay time To. The initial value of the delay time To is set in advance.
　電力変換装置２１は、外部の電源に接続される。電力変換装置２１は、外部の電源から供給される電力を運転制御装置２０から受信する制御信号に基づいて三相交流電力に変換する素子または回路などを搭載する。電力変換装置２１は、三相交流電力を電動機８に供給しうるように、電動機８に接続される。電力変換装置２１は、電力供給装置の例である。 The power converter 21 is connected to an external power supply. The power conversion device 21 includes an element or a circuit that converts power supplied from an external power supply into three-phase AC power based on a control signal received from the operation control device 20. The power converter 21 is connected to the electric motor 8 so that three-phase AC power can be supplied to the electric motor 8. The power conversion device 21 is an example of a power supply device.
　引き続き図１を用いて、制御システム１の機能を説明する。 (4) The function of the control system 1 will be described with reference to FIG.
　エレベーター２の運転において、運転制御装置２０は、トルク指令を生成する。トルク指令は、電動機８が発生させるトルクの制御目標値に対応する指令である。運転制御装置２０は、生成したトルク指令を表す制御信号を電力変換装置２１に送信する。 In operation of the elevator 2, the operation control device 20 generates a torque command. The torque command is a command corresponding to a control target value of the torque generated by the electric motor 8. The operation control device 20 transmits a control signal representing the generated torque command to the power conversion device 21.
　電力変換装置２１は、受信した制御信号に基づいて、外部の電源から供給される電力を三相交流電力に変換する。電力変換装置２１は、変換した三相交流電力を電動機８に供給する。 (4) The power converter 21 converts power supplied from an external power supply into three-phase AC power based on the received control signal. The power converter 21 supplies the converted three-phase AC power to the electric motor 8.
　電動機８は、電力の供給を受けて回転軸を回転させる。シーブ９は、電動機８の回転軸に追従して回転する。かご５は、昇降路の内部において主ロープ４の移動に追従して昇降する。釣合重り６は、昇降路の内部において主ロープ４の移動に追従して昇降する。 The electric motor 8 rotates the rotating shaft by receiving the supply of the electric power. The sheave 9 rotates following the rotation axis of the electric motor 8. The car 5 moves up and down following the movement of the main rope 4 inside the hoistway. The counterweight 6 moves up and down following the movement of the main rope 4 inside the hoistway.
　エンコーダー１８は、電動機８の回転軸の回転角の変化を検出する。エンコーダー１８は、電動機８の回転軸の回転角の変化に応じたパルス信号を、電動機８の回転軸の回転角の変化を表す信号として出力する。 The encoder 18 detects a change in the rotation angle of the rotation shaft of the electric motor 8. The encoder 18 outputs a pulse signal corresponding to a change in the rotation angle of the rotating shaft of the electric motor 8 as a signal indicating a change in the rotation angle of the rotating shaft of the electric motor 8.
　運転制御装置２０は、エンコーダー１８から、電動機８の回転軸の回転角の変化を表す信号を受信する。運転制御装置２０は、受信した信号から、電動機８の回転速度の情報を取得する。運転制御装置２０は、速度指令が表す回転速度に電動機８の回転速度が一致するようにトルク指令を生成する。速度指令は、かご５の昇降の速度の制御目標値に対応する回転速度を表す指令である。 The operation control device 20 receives from the encoder 18 a signal indicating a change in the rotation angle of the rotation shaft of the electric motor 8. The operation control device 20 acquires information on the rotation speed of the electric motor 8 from the received signal. The operation control device 20 generates a torque command such that the rotation speed of the electric motor 8 matches the rotation speed indicated by the speed command. The speed command is a command that indicates a rotation speed corresponding to a control target value of the speed at which the car 5 moves up and down.
　このとき、運転制御装置２０は、制動指令を生成しない。ブレーキ７が運転制御装置２０から制動指令を表す制御信号を受信していないときに、ブレーキコイル１２は、通電によって磁界を発生させる。アーマチュア１３は、バネ１５の弾性力に抗して、ブレーキコイル１２が発生させる磁界によって変位している。ブレーキシュー１１は、ブレーキアーム１４からアーマチュア１３の変位が伝達されている。ブレーキシュー１１は、ブレーキドラム１０の外面から離れている。ブレーキ７の作動状態は、解放である。ブレーキスイッチ１９は、ブレーキ７の解放を検出している。ブレーキスイッチ１９は、ＯＮ状態である。 運 転 At this time, the operation control device 20 does not generate a braking command. When the brake 7 has not received a control signal indicating a braking command from the operation control device 20, the brake coil 12 generates a magnetic field by energization. The armature 13 is displaced by a magnetic field generated by the brake coil 12 against the elastic force of the spring 15. The displacement of the armature 13 is transmitted from the brake arm 14 to the brake shoe 11. The brake shoe 11 is separated from the outer surface of the brake drum 10. The operation state of the brake 7 is release. The brake switch 19 detects that the brake 7 has been released. The brake switch 19 is in the ON state.
　かご５が着床位置に停止しているときに、運転制御装置２０は制動指令を表す制御信号をブレーキ７に送信する。このとき、巻上機３のシーブ９に不平衡トルクがかかる。不平衡トルクは、かご５およびかご５に乗っている乗客の重量と釣合重り６の重量との差により生じるトルクである。ここで、巻上機３の電動機８は、電力変換装置２１から供給される電力により発生させるトルクによって、回転軸を回転させずに保持している。電動機８の回転軸が回転していないときに、エンコーダー１８は、パルス信号を出力しない。 When the car 5 is stopped at the landing position, the operation control device 20 transmits a control signal indicating a braking command to the brake 7. At this time, an unbalanced torque is applied to the sheave 9 of the hoisting machine 3. The unbalanced torque is a torque generated by a difference between the weight of the car 5 and the passenger riding the car 5 and the weight of the counterweight 6. Here, the electric motor 8 of the hoisting machine 3 holds the rotating shaft without rotating by the torque generated by the electric power supplied from the electric power converter 21. When the rotating shaft of the electric motor 8 is not rotating, the encoder 18 does not output a pulse signal.
　受信した制御信号に基づいて、ブレーキ７は、ブレーキコイル１２の通電を遮断する。ブレーキコイル１２は、磁界を発生させない。バネ１５の弾性力によって、ブレーキシュー１１は、ブレーキドラム１０の外面に近づく。変位センサー１６は、アーマチュア１３の変位を検出する。変位センサー１６は、検出した変位を表す信号を例えばブレーキ制御装置１７に送信する。ブレーキ制御装置１７は、受信した信号からアーマチュア１３の速度の情報を取得する。ブレーキ制御装置１７は、取得したアーマチュア１３の速度の情報に基づいてアーマチュア１３の変位の速度を調整するようにブレーキコイル１２に磁界を発生させることで、ブレーキシュー１１とブレーキドラム１０との間の間隙が閉じる速度を遅くする。ブレーキシュー１１は、ブレーキドラム１０の外面に接触する。ブレーキ７の作動状態は、制動になる。ブレーキスイッチ１９は、ＯＦＦ状態になる。ブレーキスイッチ１９は、ブレーキ７の制動の開始を検出する。 ブ レ ー キ Based on the received control signal, the brake 7 cuts off the power supply to the brake coil 12. The brake coil 12 does not generate a magnetic field. The brake shoe 11 approaches the outer surface of the brake drum 10 by the elastic force of the spring 15. The displacement sensor 16 detects a displacement of the armature 13. The displacement sensor 16 transmits a signal indicating the detected displacement to, for example, the brake control device 17. The brake control device 17 acquires information on the speed of the armature 13 from the received signal. The brake control device 17 generates a magnetic field in the brake coil 12 so as to adjust the speed of the displacement of the armature 13 based on the acquired information on the speed of the armature 13, so that the brake Reduce the speed at which the gap closes. The brake shoe 11 contacts the outer surface of the brake drum 10. The operation state of the brake 7 is braking. The brake switch 19 is turned off. The brake switch 19 detects the start of braking of the brake 7.
　運転制御装置２０は、ブレーキスイッチ１９がＯＦＦ状態になったときに、タイマーのカウントをスタートさせる。タイマーは、運転制御装置２０が記憶している遅れ時間Ｔｏに達するまで、カウントを継続する。 The operation control device 20 starts counting the timer when the brake switch 19 is turned off. The timer continues counting until the delay time To stored in the operation control device 20 is reached.
　タイマーがカウントを継続している間に、ブレーキシュー１１は、バネ１５の弾性力によりブレーキドラム１０の外面に押し付けられる。ブレーキシュー１１がブレーキドラム１０の外面に押し付けられる圧力は、徐々に大きくなる。当該圧力が大きくなるにつれて、ブレーキ７のトルクは、徐々に大きくなる。 While the timer continues counting, the brake shoe 11 is pressed against the outer surface of the brake drum 10 by the elastic force of the spring 15. The pressure with which the brake shoe 11 is pressed against the outer surface of the brake drum 10 gradually increases. As the pressure increases, the torque of the brake 7 gradually increases.
　タイマーのカウントが遅れ時間Ｔｏに達したときに、運転制御装置２０は、電力供給の遮断を表す制御信号を電力変換装置２１に送信する。受信した制御信号に基づいて、電力変換装置２１は、電動機８への電力の供給を遮断する。電力の供給が遮断された電動機８は、トルクを発生させない。運転制御装置２０は、タイマーのカウントをリセットする。運転制御装置２０は、タイマーのカウントを再びスタートさせる。 (4) When the count of the timer reaches the delay time To, the operation control device 20 transmits a control signal indicating power supply cutoff to the power conversion device 21. Based on the received control signal, power converter 21 cuts off the supply of power to electric motor 8. The electric motor 8 to which the supply of electric power is cut off does not generate torque. The operation control device 20 resets the count of the timer. The operation control device 20 restarts counting of the timer.
　ブレーキ７のトルクが不平衡トルクより小さいときに電動機８への電力の供給が遮断された場合に、巻上機３のシーブ９は不平衡トルクによって回転する。巻上機３の回転軸は、シーブ９とともに回転する。ブレーキドラム１０は、ブレーキシュー１１と接触している状態で、回転軸と同期して回転する。エンコーダー１８は、回転軸の回転角の変化を検出する。エンコーダー１８は、電動機８の回転軸の回転角の変化に応じたパルス信号を、電動機８の回転軸の回転角の変化を表す信号として出力する。運転制御装置２０は、エンコーダー１８から、電動機８の回転軸の回転角の変化を表す信号を受信する。 When the supply of electric power to the electric motor 8 is interrupted when the torque of the brake 7 is smaller than the unbalanced torque, the sheave 9 of the hoist 3 rotates by the unbalanced torque. The rotating shaft of the hoist 3 rotates together with the sheave 9. The brake drum 10 rotates in synchronization with the rotation shaft while being in contact with the brake shoe 11. The encoder 18 detects a change in the rotation angle of the rotation shaft. The encoder 18 outputs a pulse signal corresponding to a change in the rotation angle of the rotating shaft of the electric motor 8 as a signal indicating a change in the rotation angle of the rotating shaft of the electric motor 8. The operation control device 20 receives from the encoder 18 a signal indicating a change in the rotation angle of the rotation shaft of the electric motor 8.
　ブレーキシュー１１は、バネ１５の弾性力によりブレーキドラム１０の外面にさらに押し付けられる。ブレーキシュー１１がブレーキドラム１０の外面に押し付けられる圧力は、さらに大きくなる。当該圧力が大きくなるにつれて、ブレーキ７のトルクは、さらに大きくなる。ブレーキ７のトルクが不平衡トルクに達したときに、シーブ９の回転は停止する。このとき、エンコーダー１８は、パルス信号を出力しない。運転制御装置２０は、エンコーダー１８からパルス信号が出力されなくなったときのタイマーのカウントを、測定時間ΔＴとして取得する。 The brake shoe 11 is further pressed against the outer surface of the brake drum 10 by the elastic force of the spring 15. The pressure at which the brake shoe 11 is pressed against the outer surface of the brake drum 10 further increases. As the pressure increases, the torque of the brake 7 further increases. When the torque of the brake 7 reaches the unbalanced torque, the rotation of the sheave 9 stops. At this time, the encoder 18 does not output a pulse signal. The operation control device 20 acquires the count of the timer when the pulse signal is no longer output from the encoder 18 as the measurement time ΔT.
　運転制御装置２０は、測定時間ΔＴによって、記憶している遅れ時間ＴｏをＴｏ＋ΔＴとして更新する。 The operation control device 20 updates the stored delay time To as To + ΔT based on the measurement time ΔT.
　その後、運転制御指令が生成するトルク指令に基づいて、かご５は、昇降路の内部において昇降する。 Thereafter, based on the torque command generated by the operation control command, the car 5 moves up and down inside the hoistway.
　その後、運転制御装置２０は、かご５が着床位置に再び停止しているときに、運転制御装置２０は制動指令を表す制御信号をブレーキ７に送信する。巻上機３の電動機８は、電力変換装置２１から供給される電力により発生させるトルクによって回転軸を回転させずに保持している。受信した制御信号に基づいて、ブレーキ７の作動状態は、制動になる。ブレーキスイッチ１９は、ＯＦＦ状態になる。ブレーキスイッチ１９は、ブレーキ７の制動の開始を検出する。 Thereafter, when the car 5 is stopped again at the landing position, the operation control device 20 transmits a control signal indicating a braking command to the brake 7. The electric motor 8 of the hoisting machine 3 holds the rotating shaft without rotating by the torque generated by the electric power supplied from the electric power converter 21. Based on the received control signal, the operation state of the brake 7 becomes braking. The brake switch 19 is turned off. The brake switch 19 detects the start of braking of the brake 7.
　運転制御装置２０は、ブレーキスイッチ１９がＯＦＦ状態になったときに、タイマーのカウントをスタートさせる。タイマーは、運転制御装置２０が記憶している更新された遅れ時間Ｔｏに達するまで、カウントを継続する。 The operation control device 20 starts counting the timer when the brake switch 19 is turned off. The timer continues counting until the updated delay time To stored in the operation control device 20 is reached.
　ブレーキ７の最大のトルクが不平衡トルクより大きいときに電動機８への電力の供給が遮断された場合に、巻上機３のシーブ９は不平衡トルクによって回転しない。 (4) When the supply of electric power to the electric motor 8 is cut off when the maximum torque of the brake 7 is larger than the unbalanced torque, the sheave 9 of the hoisting machine 3 does not rotate due to the unbalanced torque.
　続いて、図２および図３を用いて、制御システム１の動作を説明する。
　図２は、実施の形態１に係る制御システムの構成図である。図３は、実施の形態１に係る制御システムの動作の例を示すフローチャートである。 Next, the operation of the control system 1 will be described with reference to FIGS.
FIG. 2 is a configuration diagram of the control system according to the first embodiment. FIG. 3 is a flowchart illustrating an example of an operation of the control system according to the first embodiment.
　図２において、運転制御装置２０は、生成したトルク指令を表す制御信号を電力変換装置２１に送信する。電力変換装置２１は、受信した制御信号に基づいて、外部の電源から供給される電力を三相交流電力に変換する。電力変換装置２１は、変換した三相交流電力を電動機８に供給する。電動機８は、電力の供給を受けて回転軸を回転させる。エンコーダー１８は、電動機８の回転軸の回転角の変化を検出する。運転制御装置２０は、エンコーダー１８が検出した回転角の変化および速度指令に基づいて、トルク指令を生成する。かご５は、速度指令が対応する昇降の速度によって、昇降路の内部を昇降する。その後、かご５は、着床位置に停止する。 In FIG. 2, the operation control device 20 transmits a control signal indicating the generated torque command to the power conversion device 21. The power converter 21 converts power supplied from an external power supply into three-phase AC power based on the received control signal. The power converter 21 supplies the converted three-phase AC power to the electric motor 8. The electric motor 8 receives the supply of electric power and rotates the rotating shaft. The encoder 18 detects a change in the rotation angle of the rotation shaft of the electric motor 8. The operation control device 20 generates a torque command based on the change in the rotation angle and the speed command detected by the encoder 18. The car 5 moves up and down inside the hoistway according to the speed of up and down corresponding to the speed command. Thereafter, the car 5 stops at the landing position.
　図３のステップＳ１において、運転制御装置２０は、かご５が着床位置に停止していることを検出する。その後、制御システム１の動作は、ステップＳ２に進む。 運 転 In step S1 of FIG. 3, the operation control device 20 detects that the car 5 has stopped at the landing position. Thereafter, the operation of the control system 1 proceeds to Step S2.
　ステップＳ２において、運転制御装置２０は、制動指令を表す信号をブレーキ７に送信する。その後、制御システム１の動作は、ステップＳ３に進む。 In step S2, the operation control device 20 transmits a signal indicating a braking command to the brake 7. Thereafter, the operation of the control system 1 proceeds to Step S3.
　ステップＳ３において、運転制御装置２０は、ブレーキスイッチ１９がＯＮ状態であるかを判定する。判定結果がＹｅｓのときに、制御システム１の動作は、再びステップＳ３に進む。判定結果がＮｏのときに、運転制御装置２０は、タイマーのカウントをスタートさせる。その後、制御システム１の動作は、ステップＳ４に進む。 In step S3, the operation control device 20 determines whether the brake switch 19 is in the ON state. When the result of the determination is Yes, the operation of the control system 1 proceeds to step S3 again. When the determination result is No, the operation control device 20 starts counting the timer. Thereafter, the operation of the control system 1 proceeds to Step S4.
　ステップＳ４において、運転制御装置２０は、タイマーのカウントが遅れ時間Ｔｏに達したかを判定する。判定結果がＮｏのときに、制御システム１の動作は、再びステップＳ４に進む。判定結果がＹｅｓのときに、運転制御装置２０は、タイマーのカウントをリセットする。その後、制御システム１の動作は、ステップＳ５に進む。 In step S4, the operation control device 20 determines whether the count of the timer has reached the delay time To. When the determination result is No, the operation of the control system 1 proceeds to step S4 again. When the determination result is Yes, the operation control device 20 resets the count of the timer. Thereafter, the operation of the control system 1 proceeds to Step S5.
　ステップＳ５において、運転制御装置２０は、電力供給の遮断を表す制御信号を電力変換装置２１に送信する。その後、電力変換装置２１は、電動機８への電力の供給を遮断する。その後、運転制御装置２０は、タイマーのカウントを再びスタートさせる。その後、運転制御装置２０は、エンコーダー１８からパルス信号が出力されなくなったときのタイマーのカウントを、測定時間ΔＴとして取得する。その後、制御システム１の動作は、ステップＳ６に進む。 In step S5, the operation control device 20 transmits a control signal indicating power supply cutoff to the power conversion device 21. After that, the power converter 21 cuts off the supply of power to the electric motor 8. Thereafter, the operation control device 20 restarts counting of the timer. Thereafter, the operation control device 20 acquires the count of the timer when the pulse signal is no longer output from the encoder 18 as the measurement time ΔT. Thereafter, the operation of the control system 1 proceeds to Step S6.
　ステップＳ６において、運転制御装置２０は、測定時間ΔＴによって、記憶している遅れ時間Ｔｏを更新する。その後、制御システム１の動作は、終了する。 運 転 In step S6, the operation control device 20 updates the stored delay time To with the measurement time ΔT. Thereafter, the operation of the control system 1 ends.
　以上に説明したように、実施の形態１に係る制御システム１は、電力変換装置２１と、ブレーキスイッチ１９と、運転制御装置２０と、を備える。電力変換装置２１は、電動機８に電力を供給する。電動機８は、エレベーター２のかご５を昇降させる。ブレーキスイッチ１９は、ブレーキ７の作動状態を検出する。ブレーキ７は、電動機８を制動する。ブレーキスイッチ１９がブレーキ７の制動を検出してから遅れ時間Ｔｏが経過した後に、運転制御装置２０は、電力変換装置２１に電動機８への電力の供給を遮断させる。 As described above, the control system 1 according to the first embodiment includes the power conversion device 21, the brake switch 19, and the operation control device 20. The power converter 21 supplies electric power to the electric motor 8. The electric motor 8 raises and lowers the car 5 of the elevator 2. The brake switch 19 detects an operation state of the brake 7. The brake 7 brakes the electric motor 8. After a delay time To elapses after the brake switch 19 detects the braking of the brake 7, the operation control device 20 causes the power conversion device 21 to cut off the supply of power to the electric motor 8.
　ブレーキスイッチ１９が制動を検出してからトルクが徐々に大きくなるブレーキ７においても、電動機８に供給される電力は、遅れ時間Ｔｏの経過によってブレーキ７のトルクが大きくなってから遮断される。このため、ブレーキシュー１１とブレーキドラム１０とが接触した状態におけるブレーキドラム１０の回転が抑えられる。これにより、ブレーキ７の磨耗が抑えられる。 (4) Even in the brake 7 whose torque gradually increases after the brake switch 19 detects the braking, the power supplied to the electric motor 8 is cut off after the torque of the brake 7 increases due to the lapse of the delay time To. Therefore, the rotation of the brake drum 10 in a state where the brake shoe 11 and the brake drum 10 are in contact with each other is suppressed. Thus, wear of the brake 7 is suppressed.
　巻上機３およびブレーキ７が昇降路の内部に設けられる場合に、ブレーキ７が小型であれば昇降路内における配置の自由度が高まる。ブレーキ７を小型にする場合に、例えばアーマチュア１３を変位させるバネ１５の弾性力を強くすることによって、ブレーキ７のトルクが確保される。このとき、ブレーキ７の制御装置は、アーマチュア１３の速度の情報に基づいてブレーキシュー１１とブレーキドラム１０との間の間隙が閉じる速度を遅くする。これにより、バネ１５の弾性力によってブレーキシュー１１がブレーキドラム１０に衝突して発生させる騒音が抑制される。このため、かご５の内部に乗客がいる場合にも、騒音によって乗客に不快感を与えることが抑えられる。このブレーキ７において、ブレーキスイッチ１９が制動を検出してからブレーキ７のトルクは徐々に大きくなる。この場合においても、制御システム１は、ブレーキ７の制動によって発生する騒音の抑制と、ブレーキ７の磨耗の抑制と、を両立できる。 場合 When the hoist 3 and the brake 7 are provided inside the hoistway, if the brake 7 is small, the degree of freedom of arrangement in the hoistway increases. When the size of the brake 7 is reduced, for example, the torque of the brake 7 is secured by increasing the elastic force of the spring 15 for displacing the armature 13. At this time, the control device of the brake 7 reduces the speed at which the gap between the brake shoe 11 and the brake drum 10 closes based on the information on the speed of the armature 13. Thus, noise generated by the brake shoe 11 colliding with the brake drum 10 due to the elastic force of the spring 15 is suppressed. For this reason, even when there is a passenger inside the car 5, it is possible to prevent the passenger from feeling uncomfortable due to noise. In the brake 7, the torque of the brake 7 gradually increases after the brake switch 19 detects the braking. Also in this case, the control system 1 can achieve both suppression of noise generated by braking of the brake 7 and suppression of wear of the brake 7.
　また、制御システム１は、エンコーダー１８を備える。エンコーダー１８は、電動機８の回転軸の回転角の変化を検出する。運転制御装置２０は、電力変換装置２１に電動機８への電力の供給を遮断させてからエンコーダー１８が回転角の変化を検出しなくなるまでの測定時間ΔＴを測定する。運転制御装置２０は、測定した測定時間ΔＴによって遅れ時間Ｔｏを更新する。 制 御 The control system 1 also includes the encoder 18. The encoder 18 detects a change in the rotation angle of the rotation shaft of the electric motor 8. The operation control device 20 measures a measurement time ΔT from when the power conversion device 21 cuts off the power supply to the electric motor 8 until the encoder 18 stops detecting the change in the rotation angle. The operation control device 20 updates the delay time To with the measured measurement time ΔT.
　遅れ時間Ｔｏが短い場合に、ブレーキ７のトルクが不平衡トルクより小さいうちに電動機８への電力の供給が遮断されることがある。この場合に、運転制御装置２０は、遅れ時間Ｔｏが経過してからブレーキ７のトルクが不平衡トルクに達するまでの測定時間ΔＴを測定する。運転制御装置２０は、測定時間ΔＴによって遅れ時間Ｔｏを更新する。これにより、再びブレーキ７が電動機８を制動するときに、より長い遅れ時間Ｔｏが経過した後に電動機８への電力の供給が遮断される。このため、電動機８への電力の供給が遮断されたときのブレーキ７のトルクはより大きくなる。これにより、巻上機３のシーブ９が不平衡トルクによって回転することが抑制される。このように、運転制御装置２０は、ブレーキシュー１１が接触した状態のブレーキドラム１０の回転を抑えるように遅れ時間Ｔｏを調整する。これにより、ブレーキ７の磨耗が抑えられる。 When the delay time To is short, the supply of electric power to the electric motor 8 may be interrupted while the torque of the brake 7 is smaller than the unbalanced torque. In this case, the operation control device 20 measures the measurement time ΔT from when the delay time To elapses to when the torque of the brake 7 reaches the unbalanced torque. The operation control device 20 updates the delay time To with the measurement time ΔT. Thereby, when the brake 7 brakes the electric motor 8 again, the supply of electric power to the electric motor 8 is cut off after a longer delay time To elapses. For this reason, the torque of the brake 7 when the supply of electric power to the electric motor 8 is cut off becomes larger. Thereby, rotation of the sheave 9 of the hoisting machine 3 due to unbalanced torque is suppressed. As described above, the operation control device 20 adjusts the delay time To so as to suppress the rotation of the brake drum 10 in a state where the brake shoe 11 is in contact. Thus, wear of the brake 7 is suppressed.
　時間の経過などによってブレーキ７の状態が変化するときに、トルクが大きくなる時間などが変化することがある。時間の経過などによってブレーキ７の状態が変化する場合においても、遅れ時間Ｔｏは、エンコーダー１８の出力によって測定された測定時間ΔＴに基づいて調整される。このため、時間の経過などによってブレーキ７の状態が変化する場合においても、ブレーキ７の磨耗が抑えられる。遅れ時間Ｔｏは、測定時間ΔＴに基づいて調整されるので、保守員などによるチューニングを必要としない。 When the state of the brake 7 changes due to the passage of time or the like, the time during which the torque increases may change. Even when the state of the brake 7 changes due to elapse of time or the like, the delay time To is adjusted based on the measurement time ΔT measured by the output of the encoder 18. Therefore, even when the state of the brake 7 changes due to elapse of time or the like, wear of the brake 7 is suppressed. Since the delay time To is adjusted based on the measurement time ΔT, there is no need for tuning by maintenance personnel or the like.
　なお、ブレーキ７は例えばディスクブレーキであってもよい。このとき、ブレーキ７は、例えば、ブレーキディスクと、一対のブレーキパッドと、を備える。ブレーキディスクは、電動機８の回転軸と同期して回転しうるように、電動機８の回転軸に設けられる。一対のブレーキパッドの一方は、ブレーキディスクの一側に設けられる。一対のブレーキパッドの他方は、ブレーキディスクの他側に設けられる。ブレーキアーム１４は、アーマチュア１３の変位を一対のブレーキパッドの各々に伝達する。ブレーキ７は、一対のブレーキパッドでブレーキディスクを挟み込むことによって、電動機８を制動する。 The brake 7 may be, for example, a disc brake. At this time, the brake 7 includes, for example, a brake disk and a pair of brake pads. The brake disk is provided on the rotating shaft of the electric motor 8 so as to be able to rotate in synchronization with the rotating shaft of the electric motor 8. One of the pair of brake pads is provided on one side of the brake disc. The other of the pair of brake pads is provided on the other side of the brake disc. The brake arm 14 transmits the displacement of the armature 13 to each of the pair of brake pads. The brake 7 brakes the electric motor 8 by sandwiching a brake disc between a pair of brake pads.
　ブレーキ７は、ブレーキアーム１４またはブレーキシュー１１などの変位を検出する変位センサーを備えてもよい。ブレーキ７は、アーマチュア１３、ブレーキアーム１４またはブレーキシュー１１などの速度を検出する速度センサーを備えてもよい。 The brake 7 may include a displacement sensor that detects a displacement of the brake arm 14 or the brake shoe 11 or the like. The brake 7 may include a speed sensor that detects the speed of the armature 13, the brake arm 14, the brake shoe 11, or the like.
　エンコーダー１８は、電動機８の回転軸の回転角の変化を直接検出してもよい。エンコーダー１８は、電動機８の回転軸の回転位置を検出してもよい。エンコーダー１８は、検出した回転位置に基づいて、電動機８の回転軸の回転角の変化を間接的に検出してもよい。 The encoder 18 may directly detect a change in the rotation angle of the rotation shaft of the electric motor 8. The encoder 18 may detect a rotation position of a rotation shaft of the electric motor 8. The encoder 18 may indirectly detect a change in the rotation angle of the rotation shaft of the electric motor 8 based on the detected rotation position.
　運転制御装置２０は、電力変換装置２１に電動機８への電力の供給を遮断させてからエンコーダー１８が回転角の変化を検出しない場合に、遅れ時間Ｔｏを更新しなくてもよい。 The operation control device 20 does not need to update the delay time To when the encoder 18 does not detect a change in the rotation angle after the power conversion device 21 shuts off the power supply to the electric motor 8.
　続いて、図４を用いて制御システム１のハードウェア構成の例について説明する。
　図４は、実施の形態１に係る制御システムの主要部のハードウェア構成を示す図である。 Subsequently, an example of a hardware configuration of the control system 1 will be described with reference to FIG.
FIG. 4 is a diagram illustrating a hardware configuration of a main part of the control system according to the first embodiment.
　制御システム１の各機能は、処理回路により実現し得る。処理回路は、少なくとも１つのプロセッサ１ｂと少なくとも１つのメモリ１ｃとを備える。処理回路は、プロセッサ１ｂおよびメモリ１ｃと共に、あるいはそれらの代用として、少なくとも１つの専用のハードウェア１ａを備えてもよい。 各 Each function of the control system 1 can be realized by a processing circuit. The processing circuit includes at least one processor 1b and at least one memory 1c. The processing circuit may include at least one dedicated hardware 1a together with or as a substitute for the processor 1b and the memory 1c.
　処理回路がプロセッサ１ｂとメモリ１ｃとを備える場合、制御システム１の各機能は、ソフトウェア、ファームウェア、またはソフトウェアとファームウェアとの組み合わせで実現される。ソフトウェアおよびファームウェアの少なくとも一方は、プログラムとして記述される。そのプログラムはメモリ１ｃに格納される。プロセッサ１ｂは、メモリ１ｃに記憶されたプログラムを読み出して実行することにより、制御システム１の各機能を実現する。 When the processing circuit includes the processor 1b and the memory 1c, each function of the control system 1 is realized by software, firmware, or a combination of software and firmware. At least one of software and firmware is described as a program. The program is stored in the memory 1c. The processor 1b implements each function of the control system 1 by reading and executing a program stored in the memory 1c.
　プロセッサ１ｂは、ＣＰＵ（Ｃｅｎｔｒａｌ　Ｐｒｏｃｅｓｓｉｎｇ　Ｕｎｉｔ）、処理装置、演算装置、マイクロプロセッサ、マイクロコンピュータ、ＤＳＰともいう。メモリ１ｃは、例えば、ＲＡＭ、ＲＯＭ、フラッシュメモリ、ＥＰＲＯＭ、ＥＥＰＲＯＭ等の、不揮発性または揮発性の半導体メモリ、磁気ディスク、フレキシブルディスク、光ディスク、コンパクトディスク、ミニディスク、ＤＶＤ等により構成される。 The processor 1b is also referred to as a CPU (Central Processing Unit), a processing device, an arithmetic device, a microprocessor, a microcomputer, or a DSP. The memory 1c includes, for example, a nonvolatile or volatile semiconductor memory such as a RAM, a ROM, a flash memory, an EPROM, and an EEPROM, a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, and a DVD.
　処理回路が専用のハードウェア１ａを備える場合、処理回路は、例えば、単一回路、複合回路、プログラム化したプロセッサ、並列プログラム化したプロセッサ、ＡＳＩＣ、ＦＰＧＡ、またはこれらの組み合わせで実現される。 When the processing circuit includes the dedicated hardware 1a, the processing circuit is realized by, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof.
　制御システム１の各機能は、それぞれ処理回路で実現することができる。あるいは、制御システム１の各機能は、まとめて処理回路で実現することもできる。制御システム１の各機能について、一部を専用のハードウェア１ａで実現し、他部をソフトウェアまたはファームウェアで実現してもよい。このように、処理回路は、ハードウェア１ａ、ソフトウェア、ファームウェア、またはこれらの組み合わせで制御システム１の各機能を実現する。 各 Each function of the control system 1 can be realized by a processing circuit. Alternatively, each function of the control system 1 can be realized by a processing circuit collectively. A part of each function of the control system 1 may be realized by dedicated hardware 1a, and the other part may be realized by software or firmware. As described above, the processing circuit implements each function of the control system 1 by hardware 1a, software, firmware, or a combination thereof.
　ブレーキ制御装置１７の機能は、制御システム１と共通のハードウェアなどによって実現されてもよい。 The function of the brake control device 17 may be realized by hardware common to the control system 1 or the like.
　実施の形態２．
　実施の形態２では、実施の形態１で開示された例と相違する点について詳しく説明する。実施の形態２で説明しない特徴については、実施の形態１で開示された例のいずれの特徴が採用されてもよい。 Embodiment 2 FIG.
In the second embodiment, points different from the example disclosed in the first embodiment will be described in detail. As for features not described in the second embodiment, any of the features disclosed in the first embodiment may be adopted.
　図５を用いて、実施の形態２に係る制御システム１の動作を説明する。
　図５は、実施の形態２に係る制御システムの動作の例を示すフローチャートである。 The operation of the control system 1 according to the second embodiment will be described with reference to FIG.
FIG. 5 is a flowchart illustrating an example of an operation of the control system according to the second embodiment.
　実施の形態２に係る制御システム１は、ステップＳ１からステップＳ６までにおいて、実施の形態１に係る制御システム１と同様に動作する。ステップＳ６において運転制御装置２０が記憶している遅れ時間Ｔｏを更新した後、実施の形態２に係る制御システム１の動作は、ステップＳ７に進む。 制 御 The control system 1 according to the second embodiment operates in the same manner as the control system 1 according to the first embodiment from step S1 to step S6. After updating the delay time To stored in the operation control device 20 in step S6, the operation of the control system 1 according to the second embodiment proceeds to step S7.
　ステップＳ７において、運転制御装置２０は、更新された遅れ時間Ｔｏが予め定められた異常検出時間より長いかを判定する。判定結果がＹｅｓのときに、制御システム１の動作は、ステップＳ８に進む。判定結果がＮｏのときに、制御システム１の動作は、終了する。 In step S7, the operation control device 20 determines whether the updated delay time To is longer than a predetermined abnormality detection time. When the result of the determination is Yes, the operation of the control system 1 proceeds to step S8. When the result of the determination is No, the operation of the control system 1 ends.
　ステップＳ８において、運転制御装置２０は、ブレーキ７の異常を検出する。その後、運転制御装置２０は、エレベーター２の使用を不可にする。その後、制御システム１の動作は、終了する。 In step S8, the operation control device 20 detects an abnormality of the brake 7. Thereafter, the operation control device 20 disables the use of the elevator 2. Thereafter, the operation of the control system 1 ends.
　以上に説明したように、実施の形態２に係る制御システム１において、遅れ時間Ｔｏが予め定められた異常検出時間より長い場合に、運転制御装置２０は、ブレーキ７の異常を検出する。 As described above, in the control system 1 according to the second embodiment, when the delay time To is longer than a predetermined abnormality detection time, the operation control device 20 detects the abnormality of the brake 7.
　異常検出時間の間にブレーキ７のトルクの大きさが不平衡トルクの大きさに達しない場合に、遅れ時間Ｔｏが予め定められた異常検出時間より長くなる。このため、遅れ時間Ｔｏが予め定められた異常検出時間より長い状態は、ブレーキ７の故障などの異常を表す。このため、運転制御装置２０は、運転においてブレーキ７の異常を検出できる。 If the magnitude of the torque of the brake 7 does not reach the magnitude of the unbalanced torque during the abnormality detection time, the delay time To becomes longer than a predetermined abnormality detection time. Therefore, a state in which the delay time To is longer than the predetermined abnormality detection time indicates an abnormality such as a failure of the brake 7. Therefore, the operation control device 20 can detect an abnormality of the brake 7 during operation.
　また、ブレーキ７の異常を検出する場合に、運転制御装置２０は、エレベーター２の使用を不可にする。 運 転 When detecting an abnormality of the brake 7, the operation control device 20 disables the use of the elevator 2.
　運転制御装置２０は、ブレーキ７に異常が発生している場合に、エレベーター２の使用を不可にする。これにより、ブレーキ７の異常が発生している状態でのエレベーター２の運転が未然に防がれる。 The operation control device 20 disables the use of the elevator 2 when an abnormality has occurred in the brake 7. Thus, the operation of the elevator 2 in a state where the abnormality of the brake 7 has occurred is prevented beforehand.
　なお、ブレーキ７の異常を検出する場合に、運転制御装置２０は、例えばエレベーター２の情報を管理する設備または施設などに検出した異常の情報を通報してもよい。 When detecting an abnormality of the brake 7, the operation control device 20 may report information of the detected abnormality to, for example, a facility or facility that manages information of the elevator 2.
　運転制御装置２０は、例えばトルク指令を生成しないことなどによってエレベーター２の使用を不可にしてもよい。運転制御装置２０は、例えば利用者の呼びを受け付ける装置などに、ブレーキ７の異常を表す制御信号を送信してもよい。このとき、制御信号を受信した装置などは、利用者の呼びを受け付けない。これにより、エレベーター２の使用が不可になる。 The operation control device 20 may disable the use of the elevator 2 by, for example, not generating a torque command. The operation control device 20 may transmit a control signal indicating an abnormality of the brake 7 to, for example, a device that receives a call from a user. At this time, the device or the like that has received the control signal does not accept the call from the user. As a result, the use of the elevator 2 becomes impossible.
　本発明に係る制御システムは、エレベーターに適用できる。 制 御 The control system according to the present invention can be applied to an elevator.
　１　制御システム、　１ａ　ハードウェア、　１ｂ　プロセッサ、　１ｃ　メモリ、　２　エレベーター、　３　巻上機、　４　主ロープ、　５　かご、　６　釣合重り、　７　ブレーキ、　８　電動機、　９　シーブ、　１０　ブレーキドラム、　１１　ブレーキシュー、　１２　ブレーキコイル、　１３　アーマチュア、　１４　ブレーキアーム、　１５　バネ、　１６　変位センサー、　１７　ブレーキ制御装置、　１８　エンコーダー、　１９　ブレーキスイッチ、　２０　運転制御装置、　２１　電力変換装置 1 control system, 1a hardware, 1b processor, 1c memory, 2 elevator, 3 hoist, 4 main rope, 5 car, 6 balance weight, 7 brake, 8 electric motor, 9 sheave, 10 brake drum, 11 brake shoe , {12} brake coil, {13} armature, {14} brake arm, {15} spring, {16} displacement sensor, {17} brake controller, {18} encoder, {19} brake switch, {20} operation controller, {21} power converter

Claims (4)

  1. 　エレベーターのかごを昇降させる電動機に電力を供給する電力供給装置と、
    　前記電動機を制動するブレーキの作動状態を検出するブレーキスイッチと、
    　前記ブレーキスイッチが前記ブレーキの制動を検出してから遅れ時間が経過した後に前記電力供給装置に前記電動機への電力の供給を遮断させる運転制御装置と、
    　を備えるエレベーターの制御システム。     An electric power supply device for supplying electric power to an electric motor that raises and lowers an elevator car;
    A brake switch for detecting an operation state of a brake for braking the electric motor;
    An operation control device that causes the power supply device to cut off the supply of power to the electric motor after a delay time has elapsed since the brake switch detects braking of the brake;
    Elevator control system comprising:
  2. 　前記電動機の回転軸の回転角の変化を検出するエンコーダー
    　を備え、
    　前記運転制御装置は、前記電力供給装置に前記電動機への電力の供給を遮断させてから前記エンコーダーが前記回転角の変化を検出しなくなるまでの時間を測定し、測定した当該時間によって前記遅れ時間を更新する請求項１に記載のエレベーターの制御システム。     An encoder for detecting a change in the rotation angle of the rotating shaft of the electric motor,
    The operation control device measures a time from when the power supply device cuts off the supply of power to the electric motor until the encoder stops detecting the change in the rotation angle, and the measured delay time is determined by the measured time. 2. The elevator control system according to claim 1, wherein
  3. 　前記運転制御装置は、前記遅れ時間が予め定められた時間より長い場合に前記ブレーキの異常を検出する請求項２に記載のエレベーターの制御システム。 The elevator control system according to claim 2, wherein the operation control device detects an abnormality of the brake when the delay time is longer than a predetermined time.
  4. 　前記運転制御装置は、前記ブレーキの異常を検出する場合にエレベーターの使用を不可にする請求項３に記載のエレベーターの制御システム。 The elevator control system according to claim 3, wherein the operation control device disables use of the elevator when detecting an abnormality of the brake.
PCT/JP2018/024047 2018-06-25 2018-06-25 Elevator control system WO2020003356A1 (en)

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