JP5368020B2 - Electric seat for vehicle - Google Patents

Description

  The present invention is for a vehicle having a plurality of posture adjustment units for maintaining the posture of an occupant and changing the posture, and including a plurality of electric motors for driving each of the plurality of posture adjustment units. The present invention relates to an electric seat.

  The posture adjustment unit includes, for example, a slide adjustment unit for moving the entire seat back and forth, a reclining adjustment unit for changing the inclination angle of the seat back, a lifter adjustment unit for moving the entire seat up and down, and a seat. There is a vertical adjustment unit for moving only the front side of the unit up and down.

  Normally, when a voltage is applied to the electric motor to start (start) the electric motor, as shown in FIGS. 12 (a) and 12 (b), the electric motor is in a steady state immediately after the voltage is applied. Thus, a larger current (hereinafter, this current is referred to as an inrush current or a starting current) flows than the current when the current is stabilized (hereinafter, this current is referred to as an operating current). Incidentally, the inrush current value varies depending on the electric motor and the load state, but is approximately 5 to 7 times the operating current.

  For this reason, when controlling the operation of a plurality of electric motors, if a plurality of electric motors are activated at the same time, a very large current is required for the power supply unit that supplies power to the plurality of electric motors, and may be necessary depending on the power supply circumstances. A large current capacity cannot be secured and there is a possibility that it cannot be operated.

Accordingly, in the invention described in Patent Document 1, the start timings of the electric motors are sequentially shifted to prevent the inrush current generation time (hereinafter referred to as the inrush time) from overlapping. .
JP 2002-34463 A

  By the way, when the invention described in Patent Document 1 is applied to the above-described electric vehicle seat, the time required to complete the setting of all the posture adjustment units (hereinafter, this time is referred to as the operation completion time) becomes longer. There is a high risk that

That is, when each electric motor is operated and each adjustment unit is set to each target position, the operation time of each electric motor naturally varies depending on the target position.
For this reason, for example, when the operating time of the last-started electric motor (hereinafter, this electric motor is referred to as a final starting motor) must be extended, the operating time of the final starting motor is long. Since the final starter motor can only be started after the rush time of another electric motor other than the final starter motor has elapsed or after the other electric motor has stopped, the operation completion time becomes longer. There is a high risk of losing.

  This can be solved by sufficiently increasing the capacity of the power supply unit so that a plurality of electric motors can be started all at the same time. Will be invited.

  In view of the above points, an object of the present invention is to shorten an operation completion time while suppressing an increase in the size of a power supply unit and an increase in manufacturing cost.

The present invention, in order to achieve the object, in the invention according to claims 1 to 4, holds the occupant posture for driving operation of the vehicle, a plurality of orientation adjuster for changing the attitude (1 3, 5, 7) and a plurality of electric motors (1 </ b> A, 3 </ b> A, 5 </ b> A, 7 </ b> A) for driving each of the plurality of posture adjusting units (1, 3, 5, 7) A power supply unit (11) for supplying electric power to a plurality of electric motors (1A, 3A, 5A, 7A) and an inrush current, an inrush time of each of the electric motors (1A, 3A, 5A, 7A), A storage unit (13) for storing the operating current and the operating speed, and state detecting means (1C, 3C, 5C, 7C) for detecting the current state of each of the plurality of posture adjusting units (1, 3, 5, 7) Reading means (S5) for reading the target posture; and storage unit (13) The stored inrush current, inrush time, operating current and operating speed, the target posture state read by the reading means (S5), and the current state detected by the state detecting means (1C, 3C, 5C, 7C) Based on the operation time calculation means (S7) for obtaining the operation time necessary for making the current state including the entry time into the target posture state for each electric motor (1A, 3A, 5A, 7A), The electric motor (1A, 3A, 5A, 7A) that controls the operation of the electric motor (1A, 3A, 5A, 7A) and that has reached the maximum operating time out of the operating time obtained by the operating time calculation means (S7). And a control unit (9) for first operating.

Thus, in the invention according to claims 1 to 4 , since the electric motor having the maximum operating time (hereinafter, this electric motor is referred to as the maximum operating time motor) is started first, the current of the power supply unit (11) When other electric motors other than the maximum operating time motor are operated simultaneously with the maximum operating time motor within a range not exceeding the capacity, the time for operating the plurality of electric motors (1A, 3A, 5A, 7A) simultaneously is lengthened. Therefore, the operation completion time can be shortened.

Specifically, for example, three electric motors are provided, the operation time of the first electric motor is T1, the operation time of the second electric motor is T2, and the operation time of the third electric motor is T3. The inrush time t and the operating current i are all the same, and T1 <T2 <T3, (T1 + T2) <T3, and the current capacity of the power supply unit is equivalent to two units (= 2i) (FIG. 13 (a In the invention described in claims 1 to 4 , the operation completion time can be set to T3, whereas in the invention described in Patent Document 1, the first electric motor and the second electric motor are provided. When the electric motor is started in the order of the third electric motor, the operation completion time is T1 + T3.

That is, in the invention according to claims 1 to 4 , as shown in FIG. 13B, after the third electric motor and the first electric motor are operated simultaneously, after the first electric motor is stopped, the third electric motor is stopped. Since the electric motor and the second electric motor can be operated simultaneously, the operation completion time is T3.

  On the other hand, in the invention described in Patent Document 1, as shown in FIG. 13C, after the first electric motor is started, the second electric motor is started after the rush time has elapsed, and the first electric motor is stopped. Since the third electric motor is activated later, the operation completion time is T1 + T3.

Thus, in the invention described in claims 1 to 4 , it is possible to shorten the operation completion time from the invention described in Patent Document 1 while suppressing an increase in the size of the power supply unit (11) and an increase in manufacturing cost. Become.
Note that “starting the maximum operating time motor first” means that there is no electric motor to start before the maximum operating time motor. Therefore, for example, the case where the second electric motor is started after starting the third electric motor, which is the maximum operating time motor, is included as well as the case where the third electric motor and the second electric motor are started simultaneously.

  By the way, the rush current, the rush time, the working current, and the working speed may change due to the secular change of the electric motor (1A, 3A, 5A, 7A) and the posture adjusting unit (1, 3, 5, 7). If these values change, the maximum operation time motor cannot be accurately specified, and therefore it may not be possible to shorten the operation completion time.

On the other hand, in the invention described in claim 1 , for each electric motor (1A, 3A, 5A, 7A), an inrush current detection means for detecting inrush current, inrush time, operating current and operating speed (S19). And a writing means (S27) for storing the detection result of the inrush current detection means (S19) in the storage section (13), the maximum operating time even if the inrush current changes due to secular change. The motor can be accurately identified.

Therefore, in the first aspect of the invention, the operation completion time can be stably reduced without being affected by the secular change.
Further, the inrush current or the like is likely to change depending on the load of the electric motor (1A, 3A, 5A, 7A), that is, whether or not an occupant is seated.

On the other hand, in the invention described in claim 2 , for each electric motor (1A, 3A, 5A, 7A), an inrush current detection means for detecting an inrush current, an inrush time, an operating current and an operating speed (S59). The detection result (S67) for detecting whether or not the occupant is seated, and the detection result (S59) for detecting the inrush current when the occupant is seated, or the occupant is seated. And writing means for storing in the storage section (13) that the result of detection by the inrush current detection means (S59) when there is no data can be identified, and the operating time calculation means (S41) is a seating detection means (S31). ), The inrush current, the inrush time, the operating current, and the operating speed corresponding to the detection result are read from the storage unit (13) to obtain the operating time, and therefore it is affected by whether or not the occupant is seated. Not stable It is possible to shorten the operation completion time.

In addition, in invention of Claim 3 , the position memory (13, ROM) in which the target attitude | position was memorize | stored is provided, and the reading means (S5) is the attitude | position memorize | stored in the position memory (13, ROM). Is read as a target posture state. In the invention according to claim 4 , the reading means (S5) reads the posture stored in the storage device carried by the occupant via wireless communication. It is characterized by being read as a target posture state.

  Incidentally, the reference numerals in parentheses for each of the above means are examples showing the correspondence with the specific means described in the embodiments described later, and the present invention is indicated by the reference numerals in the parentheses of the above respective means. It is not limited to specific means.

In the present embodiment, an electric seat according to the present invention is applied to a driver's seat on which a driver who operates a vehicle is seated, and the embodiment of the present invention will be described below with reference to the drawings.
(First embodiment)
1. DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an outline of an electric vehicle seat (hereinafter abbreviated as a seat) according to this embodiment, and FIG. 2 is a flowchart showing control of an adjustment unit according to this embodiment. 3A to FIG. 3D are diagrams showing examples of drive control patterns, FIG. 4 is a flowchart showing acquisition control, and FIG. 5 is a diagram showing drive control patterns according to the prior art.

2. Configuration of the electric seat according to the present embodiment (see FIG. 1)
As is well known, a driver's seat (not shown) is composed of a seat (not shown), a seat back (back), and the like for maintaining the driver's driving posture. In order to change the posture, a plurality of posture adjustment units 1, 3, 5, and 7 are provided.

  The front vertical posture adjustment unit 1 is for moving up and down only the seat front side, the lifter posture adjustment unit 3 is for moving the entire seat up and down, and the reclining posture adjustment unit 5 is The tilt angle (reclining) of the seat back of the seat is changed, and the slide position adjusting unit 7 slides (translates) the entire seat in the vehicle front-rear direction.

  And each attitude | position adjustment part 1, 3, 5, 7 is driven by electric motor 1A, 3A, 5A, 7A, and these electric motor 1A, 3A, 5A, 7A (Hereinafter, these electric motors are named generically. In some cases, the electric power for driving the electric motor 1A or the like) is supplied to the power supply unit via the drive circuits 1B, 3B, 5B, and 7B (hereinafter, these drive circuits are collectively referred to as the drive circuit 1B and the like). 11 is supplied.

  The control of the drive circuit 1B and the like, that is, the operation of the electric motor 1A and the like is controlled by an electronic control unit (ECU) 9. This electronic control unit 9 is a well-known microcomputer comprising a CPU, a RAM, a ROM and the like. Configured. Incidentally, a program for controlling the drive circuit 1B and the like is stored in advance in the ROM.

  The storage unit 13 is a memory that stores the inrush current, the inrush time, the operating current, the operating speed, and the like of each electric motor 1A, 3A, 5A, 7A. The storage unit 13 is supplied with power such as a flash memory. It is configured by a nonvolatile storage device that can retain the stored contents even when it is stopped.

  Here, as described in the “Background Art” section, the operating current refers to a current when the electric motor 1A or the like is in a steady state and the current is stabilized, and the inrush current refers to the electric motor 1A or the like. A current larger than the operating current that flows immediately after the voltage is applied.

  The inrush time refers to the time during which an inrush current is generated, and the operating speed refers to the posture adjusting units 1, 3, 5, 7 (hereinafter referred to as these when the electric motor 1 </ b> A or the like is driven by the operating current). Are collectively referred to as the posture adjusting unit 1 or the like).

  Although the operating speed differs between the state where the inrush current flows and the steady state, the difference is slight. In this embodiment, the attitude adjustment unit when the electric motor 1A or the like is driven by the operating current. The operating speed such as 1 is the operating speed.

  The manual operation unit 15 is a switch for receiving an instruction operation from an occupant such as a driver and actuating the electric motor 1A and the like (drive attitude adjustment units 1, 3, 5, and 7). Then, the target driving posture can also be set by the manual operation unit 15.

  Here, the target driving posture is an operation target of each posture adjusting unit 1, 3, 5, 7 when automatically operating each posture adjusting unit 1, 3, 5, 7 using the electric motor 1A or the like. The state of the sheet to determine the value. In the present embodiment, the target driving posture set by the driver or the like via the manual operation unit 15 is stored in the ROM or the storage unit 13 of the electronic control device 9.

  Note that an initial value indicating the target driving posture is stored in advance in the ROM or the like (at the time of shipment from the manufacturer), and when the target driving posture is set by the driver or the like, the target driving posture is set by the occupant. Updated to the correct posture.

  The detection units 1C, 3C, 5C, and 7C are state detection units that detect the current state of the posture adjustment units 1, 3, 5, and 7 (each electric motor 1A and the like). A signal indicating the state (position) of the posture adjustment unit 1 and the like detected by 3C, 5C, and 7C (hereinafter collectively referred to as the detection unit 1C and the like) is input to the electronic control unit 9. .

  The detection unit 1C is a unit that detects the state of the front vertical posture adjustment unit 1, the detection unit 3C is a unit that detects the state of the lifter posture adjustment unit 3, and the detection unit 5C is a reclining posture adjustment unit. The detection unit 7 </ b> C is a unit that detects the state of the slide position adjustment unit 7.

3. Characteristic operation control of the seat according to the present embodiment 3.1. FIG. 2 is a flowchart showing a control operation of the attitude adjustment unit 1 and the like (hereinafter, this control is referred to as adjustment unit control). This adjustment unit control is activated when the start permission switch is turned on. This is executed by the electronic control unit 9 (CPU).

  The start permission switch is a switch for enabling electric power supplied from an in-vehicle battery to an electric device mounted on the vehicle, for example, an ignition switch or an accessory switch.

  When the adjustment unit control is activated, the inrush current, the inrush time, the operating current, and the operating speed (hereinafter, these information are referred to as inrush current etc. information) for each electric motor 1A and the like are acquired from the storage unit 13. At the same time (S1), a detection signal from the detection unit 1C or the like, that is, the current position of each electric motor 1A or the like is acquired (S3).

  Next, after the target driving posture, that is, the operation completion position of the electric motor 1A or the like is acquired from the ROM or the storage unit 13 of the electronic control unit 9 (S5), the inrush current information acquired in S1, and in S5 Based on the acquired target driving posture and the current position acquired in S3, the operation time (including the rush time) required to set the current seat state to the target driving posture is the electric motor 1A. And so on (S7).

  In addition, as described above, an initial value indicating the target driving posture is stored in advance in the ROM or the like. If the target driving posture is not set or updated by the driver or the like, the initial value set in advance is stored. A value is acquired as the target driving posture.

  When the required operating time is calculated for each electric motor 1A or the like (S7), there is a drive control pattern that first operates at least the electric motor that has reached the maximum operating time among the calculated operating times. After the determination (S9), each electric motor 1A and the like are driven and controlled according to the determined drive control pattern (S11).

The drive control pattern refers to a chart (see FIG. 3A, etc.) showing the drive start timing and drive end timing of each electric motor 1A and the like.
Next, when driving of each electric motor 1A and the like is started (S11), it is determined whether or not driving is completed for all the electric motors 1A and the like (S13), and when it is determined that driving is not completed. (S13: NO) enters a standby state, and when it is determined that the process has ended (S13: YES), this control ends.

3.2. Inrush current information acquisition control The inrush current information is pre-stored in the storage unit 13 as a design value as an initial value. May change.

  Therefore, in the present embodiment, at the same time as the adjustment unit control is activated, information acquisition control that operates independently of the adjustment unit control is activated, and information such as inrush current stored in the storage unit 13 is actually measured. Update to

FIG. 4 is a flowchart showing the acquisition control for updating the inrush current in the information such as the inrush current. Hereinafter, the acquisition control will be described taking the case of updating the inrush current as an example.
When the information acquisition control shown in FIG. 4 is activated by the electronic control unit 9 (CPU), the inrush current for each electric motor 1A and the like currently stored in the storage unit 13 is acquired ( S15), the acquired inrush current is stored in the RAM or the like of the electronic control unit 9 (S17).

  Next, the actual inrush current for each electric motor 1A etc. is measured based on the electric power supplied from the drive circuit 1B etc. to the electric motor 1A etc. (S19), and the inrush current measured in S19 (hereinafter referred to as the following) It is determined for each electric motor 1A or the like whether or not this current is referred to as a measured current value) is larger than an inrush current stored in the RAM (hereinafter, this current is referred to as a stored value) (S21).

  If it is determined that the measured current value is larger than the stored value (S21: YES), after the current stored value is updated to the measured current value (S23), whether or not the inrush state has ended, that is, It is determined whether the electric motor 1A and the like are in a steady state and the current is stable (S25).

  Incidentally, in this embodiment, when the rate of change of the measured current, that is, the absolute value of the difference between the measured current value measured last time and the measured current value measured this time is equal to or less than a predetermined value, the current is stably inrushed. Is determined to have ended.

  If it is determined in S25 that the rush state has not ended (S25: NO), S19 is executed again. On the other hand, if it is determined that the rush state has ended (S25: YES) The stored value is stored in the storage unit 13 as an inrush current, and the inrush current is updated (S27).

For this reason, in the present embodiment, when the adjustment unit control is activated next time, the updated new inrush current information is read to determine the drive control pattern.
4). Characteristics of Seat According to this Embodiment In this embodiment, since the electric motor (maximum operation time motor) that has reached the maximum operation time is started first, the maximum operation time motor is within a range that does not exceed the current capacity of the power supply unit 11. When other electric motors 1A, etc. other than those are operated at the same time as the maximum operating time motor, it is possible to lengthen the time for operating the plurality of electric motors 1A, etc. simultaneously, and to shorten the operation completion time. Become.

  That is, FIG. 5 shows a drive control pattern in the prior art, and FIGS. 3A to 3D show a drive control pattern in the present embodiment. As is clear from these figures, in the present embodiment, the operation of all the electric motors 1A and the like is completed within the maximum operation time, whereas in the drive control pattern in the conventional technique shown in FIG. The operation of all the electric motors 1A and the like cannot be completed within the maximum operation time.

As described above, in the present embodiment, the operation completion time can be shortened from the invention described in Patent Document 1 while suppressing an increase in the size of the power supply unit 11 and an increase in manufacturing cost.
Note that “starting the maximum operating time motor first” means that there is no electric motor to start before the maximum operating time motor. Therefore, as shown in FIGS. 3 (a) and 3 (d), when starting the other electric motor 1A etc. after starting the maximum operating time motor, of course, starting all the electric motors 1A etc. simultaneously Is also included.

  In the present embodiment, for each electric motor 1A and the like (posture adjustment unit 1 and the like), the inrush current, the inrush time, the operating current, and the operating speed are detected, and the information on the inrush current is updated. Even if the information changes due to aging, the maximum operating time motor can be accurately specified.

Therefore, in this embodiment, the operation completion time can be stably shortened without being affected by aging.
5. Correspondence between Invention Specific Items and Embodiments In this embodiment, the detection unit 1C and the like correspond to the state detection means described in the claims, and S5 corresponds to the reading means described in the claims. , S7 corresponds to the operation time calculating means described in the claims, the electronic control device 9 corresponds to the control unit described in the claims, and S19 corresponds to the inrush current described in the claims. S27 corresponds to the writing means described in the claims.

(Second Embodiment)
In the first embodiment, the adjustment unit control is executed regardless of whether the driver or the like is seated on the seat. However, the present embodiment is based on whether or not the driver or the like is seated on the seat. The drive control pattern is calculated by selecting information such as the inrush current to be referred to.

  For this reason, in the electric seat according to the present embodiment, as shown in FIG. 6, an occupant determination unit 17 for determining whether an occupant such as a driver is seated on the seat is provided. The inrush current information used when the passenger is seated and the inrush current information used when the passenger is not seated are stored in the storage unit 13 in advance.

  The occupant determination unit 17 according to the present embodiment determines whether or not the occupant is seated on the seat using a pressure sensor provided in the seat portion of the seat, and the output signal of the occupant determination unit 17 is It is input to the electronic control unit 9.

1. FIG. 7 is a flowchart showing the adjustment unit control according to the present embodiment. When this adjustment unit control is activated, first, an occupant is seated based on the output signal of the occupant determination unit 17. It is determined whether or not there is (S31).

  If it is determined that the user is seated (S31: YES), information such as an inrush current used when the passenger is seated is acquired from the storage unit 13 (S33). If it is determined (S31: NO), information such as inrush current used when the occupant is not seated is acquired from the storage unit 13 (S35).

  Next, a detection signal (current position of each electric motor 1A or the like) from the detection unit 1C or the like is acquired (S37), and a target driving posture (operation completion position of the electric motor 1A or the like) is stored in the ROM of the electronic control unit 9 Alternatively, after being acquired from the storage unit 13 (S39), based on the inrush current information acquired at S33 or S35, the target driving posture acquired at S39, and the current position acquired at S37, The operation time (including the rush time) necessary for setting the current seat state to the target driving posture is calculated for each electric motor 1A and the like (S41).

  When the required operation time is calculated for each electric motor 1A and the like (S41), at least a drive control pattern that first operates the electric motor that has reached the maximum operation time among the calculated operation times is obtained. After the determination (S43), the electric motors 1A and the like are driven and controlled according to the determined drive control pattern (S45).

  Next, when driving of each electric motor 1A and the like is started (S45), it is determined whether or not driving is completed for all the electric motors 1A and the like (S47), and when it is determined that driving is not completed. (S47: NO) enters a standby state, and when it is determined that the process has been completed (S47: YES), this control ends.

2. Inrush Current and Other Information Acquisition Control In this embodiment, two types of inrush current and other information are stored in advance in the storage unit 13 as design values as initial values. And this embodiment also starts the information acquisition control which operate | moves independently of adjustment part control simultaneously with adjustment part control similarly to 1st Embodiment, and the inrush current memorize | stored in the memory | storage part 13 Etc. to update the actual information.

  FIG. 8 is a flowchart showing the acquisition control for updating the inrush current in the information such as the inrush current. Hereinafter, the acquisition control according to the present embodiment will be described taking the case of updating the inrush current as an example.

  When the information acquisition control shown in FIG. 8 is activated by the electronic control unit 9 (CPU), it is first determined whether or not an occupant is seated based on the output signal of the occupant determination unit 17. (S51).

  Next, when it is determined that the user is seated (S51: YES), the inrush current used when the passenger is seated is acquired from the storage unit 13 (S53), and on the other hand, it is determined that the user is not seated. If it is determined (S51: NO), the inrush current used when the occupant is not seated is acquired from the storage unit 13 (S55).

  Then, after the inrush current acquired in S53 or S55 is stored in the RAM or the like of the electronic control device 9 (S57), each electric motor is based on the electric power supplied from the drive circuit 1B or the like to the electric motor 1A or the like. The actual inrush current for every 1 A or the like is measured (S59).

  Next, whether or not the measured current value measured in S59 is larger than the stored value is determined for each electric motor 1A or the like (S61), and if it is determined that the measured current value is larger than the stored value ( (S61: YES) After the current stored value is updated to the measured current value (S63), whether or not the inrush state has ended, that is, whether or not the electric motor 1A or the like has become a steady state and the current has stabilized. It is determined (S65).

  If it is determined in S65 that the entry state has not ended (S65: NO), S59 is executed again. On the other hand, if it is determined that the entry state has ended (S65: YES) It is then determined whether or not an occupant is seated (S67).

  At this time, when it is determined that the occupant is seated (S67: YES), the storage value is stored in the storage unit 13 as a state in which it is possible to identify the inrush current when the occupant is seated. Update (S69).

  On the other hand, if it is determined that the occupant is not seated (S67: NO), the stored value is stored / updated in the storage unit 13 as a state in which it is possible to identify the inrush current when the occupant is not seated. (S71).

  In the present embodiment, the area for storing the inrush current when the occupant is seated is different from the area for storing the rush current when the occupant is not seated. It is possible to identify whether the current is current.

3. Characteristics of Seat According to this Embodiment Information on inrush current or the like is likely to change depending on the load of the electric motor 1A or the like, that is, whether or not an occupant is seated.

  However, in this embodiment, since the drive control pattern is calculated by selecting information such as inrush current to be referred to depending on whether or not the occupant is seated on the seat, the influence of whether or not the occupant is seated is calculated. The operation completion time can be stably shortened without receiving.

4). Correspondence between Invention Specific Items and Embodiments In this embodiment, S39 corresponds to the reading means described in the claims, S41 corresponds to the operation time calculation means described in the claims, and S59. Corresponds to the inrush current detection means described in the claims, and S69 and S71 correspond to the writing means described in the claims.

(Third embodiment)
In the above-described embodiment, the target driving posture, that is, the operation completion position of the electric motor 1A or the like is stored in the storage means mounted on the vehicle, such as the storage unit 13 or the RAM of the electronic control unit 9. As shown in FIG. 9, the embodiment reads the target driving posture stored in the storage device 19 </ b> B carried by a passenger such as a driver via wireless communication, so that the current seat state is set as the target driving posture. The operation time required to do this is calculated.

  The storage device 19B is, for example, a remote operation having a function of executing locking / release of a vehicle door or the like by wireless communication, or a function of executing start / ignition switch of a vehicle engine by wireless communication. A portable storage device built in the device, a mobile phone, a storage device built in an IC card, or the like.

For this reason, the electronic control device 9 is connected to a wireless communication device 19A for performing wireless communication with the storage device 19B.
Note that the control shown in FIG. 10 corresponds to the target driving posture acquisition operation executed at the time of adjustment unit control or acquisition control in this embodiment, that is, S5 in FIG. 2 (see FIG. 2), S39 in FIG. It is a flowchart which shows the detail of an action | operation.

  As shown in FIG. 10, when the acquisition operation of the target driving posture is executed during the adjustment unit control or acquisition control in the present embodiment, the storage device 19B (portable device) capable of wireless communication is searched (S73). When the storage device 19B (portable device) capable of wireless communication is discovered and wireless communication is established (S73: YES), information such as inrush current is acquired from the storage device 19B (portable device) where the wireless communication is established ( S75).

(Fourth embodiment)
In the above-described embodiment, a required operation time is calculated for each electric motor 1A and the like, and a drive control pattern that first operates the electric motor that has reached the maximum operation time among the calculated operation times is calculated. However, this embodiment calculates a drive control pattern that first operates the electric motor that drives the posture adjustment unit having the largest adjustment width among the posture adjustment unit 1 and the like, and according to the drive control pattern determined by the calculation, It drives and controls the electric motor 1A and the like.

1. Adjustment Unit Control FIG. 11 is a flowchart showing the adjustment unit control according to this embodiment. When this adjustment unit control is activated, first, a detection signal from the detection unit 1C or the like, that is, the current position of each electric motor 1A or the like. Is acquired (S81).

  Next, after the target driving posture (operation completion position of the electric motor 1A or the like) is acquired from the ROM of the electronic control device 9, the storage unit 13 or the storage device 19B (S83), the target driving posture acquired in S83, Based on the current position acquired in S81, a movement amount is calculated for each electric motor 1A and the like in order to set the current seat state to the target driving posture (S85).

  When the necessary movement amount is calculated for each electric motor 1A and the like (S85), after the drive control pattern for operating the electric motor with the largest adjustment width among the attitude adjustment unit 1 and the like is determined ( In step S87, the electric motors 1A and the like are driven and controlled in accordance with the determined drive control pattern (S89).

  Here, the “posture adjustment unit with the largest adjustment width” means the posture adjustment unit with the largest adjustable range, and usually has the largest adjustment width in the front-rear direction. A drive control pattern in which the electric motor 7A for the position adjusting unit 7 is first driven is determined.

  Next, when driving of each electric motor 1A and the like is started (S89), it is determined whether or not driving is completed for all the electric motors 1A and the like (S91), and when it is determined that driving has not been completed. (S91: NO) enters a standby state, and if it is determined that the process has been completed (S91: YES), this control ends.

2. Characteristics of Sheet According to the Present Embodiment The adjustment width of the posture adjusting unit 1 or the like, that is, the adjustable range is a fixed value determined by the structure of the posture adjusting unit 1 or the like, and is shown in FIGS. In many cases, the operation time of the posture adjustment unit having the largest adjustment width is the longest.

  Therefore, in the present embodiment, by first operating the electric motor that drives the posture adjustment unit having the largest adjustment width among the posture adjustment unit 1 and the like, the control step for calculating the maximum operation time is abolished, It is possible to shorten the operation completion time from the invention described in Patent Document 1 while suppressing the enlargement of the power supply unit 11 and the increase in the manufacturing cost while making the control of the adjustment unit simple logic.

(Other embodiments)
In the above-described embodiment, the information such as inrush current is constantly updated, but the present invention is not limited to this, and the measurement value is not obtained after the acquisition control is not executed or the information such as inrush current is actually measured. And the inrush current information stored in the storage unit 13 are different from each other, the inrush current information stored in the storage unit 13 may be updated to an actual measurement value. Good.

  By the way, when the operation time is determined, the movement amount (specific adjustment width) of the posture adjustment unit 1 or the like corresponding to the operation time is uniquely determined. Therefore, the movement amount (specific adjustment width) of the posture adjustment unit 1 or the like. The electric motor 1A having the largest value is the maximum operating time motor.

  Therefore, in the first and second embodiments, the operation time is directly calculated, and the drive control pattern is determined based on the calculated operation time. However, the present invention is not limited to this, and the posture adjustment is performed. Even if the maximum operating time motor is indirectly specified by calculating the movement amount of the part 1 etc. and the drive control pattern is determined based on the movement amount of the attitude adjustment part 1 etc., the same as in the first and second embodiments Effects can be obtained.

In the above-described embodiment, the present invention is applied to the electric seat for the driver, but the application of the present invention is not limited to this.
Further, the present invention is not limited to the above-described embodiment as long as it matches the gist of the invention described in the claims.

It is a block diagram which shows the outline | summary of the electric vehicle seat which concerns on 1st Embodiment of this invention. It is a flowchart which shows adjustment part control which concerns on 1st Embodiment of this invention. (A)-(d) is a figure which shows the example of a drive control pattern which concerns on 1st Embodiment of this invention. It is a flowchart which shows the acquisition control which concerns on 1st Embodiment of this invention. It is a figure which shows the example of a drive control pattern which concerns on a prior art. It is a block diagram which shows the outline | summary of the electric vehicle seat which concerns on 2nd Embodiment of this invention. It is a flowchart which shows the adjustment part control which concerns on 2nd Embodiment of this invention. It is a flowchart which shows the acquisition control which concerns on 2nd Embodiment of this invention. It is a block diagram which shows the outline | summary of the electric vehicle seat concerning 3rd Embodiment of this invention. It is a flowchart which shows the acquisition operation of the target position performed at the time of adjustment part control or acquisition control in 3rd Embodiment of this invention. It is a flowchart which shows the adjustment part control which concerns on 4th Embodiment of this invention. (A) is a time chart which shows the relationship between time and an applied voltage, (b) is a time chart which shows the relationship between time and an electric current. (A), (b), (c) is a figure for demonstrating the effect of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Front vertical attitude | position adjustment part, 1 ... Attitude adjustment part, 1B ... Drive circuit,
1C: detecting unit, 3 ... lifter posture adjusting unit, 3C: detecting unit,
5 ... Reclining posture adjustment unit, 5C ... Detection unit, 7 ... Slide position adjustment unit,
7A ... Electric motor, 7C ... Detection part, 9 ... Electronic control unit, 11 ... Power supply part,
DESCRIPTION OF SYMBOLS 13 ... Memory | storage part, 15 ... Manual operation part, 17 ... Passenger determination part, 19A ... Wireless communication apparatus,
19B: Storage device.

Claims (4)

A vehicle having a plurality of posture adjustment units for maintaining the posture of an occupant operating the vehicle and changing the posture, and a plurality of electric motors for driving each of the plurality of posture adjustment units Electric seat for
A power supply for supplying power to the plurality of electric motors;
A storage unit for storing the inrush current, the inrush time, the operating current, and the operating speed of each of the electric motors;
State detection means for detecting a current state of each of the plurality of posture adjustment units;
A reading means for reading a target posture;
Based on the inrush current, the inrush time, the operating current and the operating speed, the target posture state read by the reading means, and the current state detected by the state detecting means, the inrush time is also stored in the storage unit. An operation time calculating means for obtaining, for each electric motor, an operation time necessary for setting the current state including the target posture state;
A controller that controls the operation of the plurality of electric motors, and first operates the electric motor that has reached the maximum operation time among the operation times obtained by the operation time calculation unit;
For each electric motor, inrush current, inrush time, operating current and detecting means for detecting operating speed and operating speed, etc.
A vehicle electric seat, comprising: a writing unit that stores the detection result of the inrush current detection unit in the storage unit. A vehicle having a plurality of posture adjustment units for maintaining the posture of an occupant operating the vehicle and changing the posture, and a plurality of electric motors for driving each of the plurality of posture adjustment units Electric seat for
A power supply for supplying power to the plurality of electric motors;
A storage unit for storing the inrush current, the inrush time, the operating current, and the operating speed of each of the electric motors;
State detection means for detecting a current state of each of the plurality of posture adjustment units;
A reading means for reading a target posture;
Based on the inrush current, the inrush time, the operating current and the operating speed, the target posture state read by the reading means, and the current state detected by the state detecting means, the inrush time is also stored in the storage unit. An operation time calculating means for obtaining, for each electric motor, an operation time necessary for setting the current state including the target posture state;
A controller that controls the operation of the plurality of electric motors, and first operates the electric motor that has reached the maximum operation time among the operation times obtained by the operation time calculation unit;
For each electric motor, inrush current, inrush time, operating current and detecting means for detecting operating speed and operating speed, etc.
Seating detection means for detecting whether or not an occupant is seated;
It is possible to identify whether it is a detection result of the inrush current detection means when the occupant is seated or a detection result of the inrush current detection means when the occupant is not seated in the storage unit. Writing means for storing,
The operating time calculating means reads the inrush current, the inrush time, the operating current, and the operating speed according to the detection result of the seating detecting means from the storage unit to obtain the operating time.
The vehicle electric seat characterized by the above-mentioned. It has a position memory that stores the target posture,
The electric vehicle seat according to claim 1, wherein the reading unit reads an attitude stored in the position memory as the target attitude state.   The electric seat for vehicles according to claim 1 or 2, wherein the reading means reads the posture stored in a storage device carried by a passenger via wireless communication as the target posture state.

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