JP2015015809A - Motor control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motor control system which can easily perform exchange operation of motor control means for controlling a motor.SOLUTION: The motor control system has: motor control means 1 which has a first information storage section 1A for storing specific information of a motor MG which is set to an initial value at the time of factory shipment and can be rewritten afterwards and controls the motor MG on the basis of first specific information stored in the first information storage section 1A; device control means (AT controller) 4 which has a second information storage section 4A for storing specific information of the motor MG which is set to an initial value at the time of factory shipment and can be rewritten afterwards and controls other devices (automatic transmission) AT other than the motor MG; and information control means 1B which is installed in the motor control means 1 and writes second specific information in the first information storage section 1A as the first specific information, when the first specific information stored in the first information storage section 1A is an initial value and the second specific information stored in the second information storage section 4A is not an initial value.

Description

  The present invention relates to a motor control system for controlling the motor based on the motor specific information.

Conventionally, the driving force control means for obtaining the required driving force of the motor according to the operation request required for the motor is provided with a first information storage unit for storing the unique information of the motor, and the motor based on the required driving force of the motor. There is known a motor control system in which a motor control means for controlling the motor is provided with a second information storage unit for storing motor-specific information (see, for example, Patent Document 1).
In this conventional motor control system, when the motor control means is exchanged, first, motor specific information is acquired from the first information storage unit of the driving force control means using the registration device. Then, the unique information of the motor acquired by the registration device is written in the second information storage unit of the new motor control means.

JP 2010-11556 A

By the way, in the conventional motor control system, when the motor control unit is replaced, the unique information of the motor is written from the first information storage unit of the driving force control unit to the second information storage unit of the motor control unit using the registration device. The registration device is a separate device from the motor control means and the driving force control means.
For this reason, each time the motor control unit is replaced, the registration device needs to be attached to and detached from the motor control unit and the driving force control unit to perform reading and writing operations of the unique information. As a result, there has been a problem that the replacement work of the motor control means becomes complicated.

  The present invention has been made paying attention to the above problem, and an object of the present invention is to provide a motor control system capable of easily exchanging motor control means for controlling a motor.

In order to achieve the above object, the motor control system of the present invention includes motor control means, device control means, and information control means.
The motor control means has a first information storage unit that is set to an initial value at the time of shipment from the factory and stores unique information of the rewritable motor, and is stored in the first information storage unit. The motor is controlled based on the information.
The device control means has a second information storage section that is set to an initial value at the time of factory shipment and stores unique information of the rewritable motor, and controls other devices other than the motor.
The information control unit is provided in the motor control unit, and the first unique information stored in the first information storage unit is an initial value, and the second unique information stored in the second information storage unit is When it is not an initial value, the second unique information is written into the first information storage unit as the first unique information.

In the motor control system of the present invention, the motor unique information (first unique information) stored in the first information storage unit of the motor control means is an initial value and is stored in the second information storage unit. When the unique information is not the initial value, the information control means provided in the motor control means writes the second unique information as the first unique information in the first information storage unit.
As a result, when the motor control means is replaced, the unique information of the motor is quickly obtained from the second information storage unit of the equipment control means for controlling equipment other than the motor, and the first of the new motor control means is obtained. It can be written in the information storage unit.
That is, motor specific information can be written in the first information storage section of the new motor control means without using a device separate from the motor control means and the device control means. As a result, it is possible to easily replace the motor control means for controlling the motor.

1 is an overall system configuration diagram showing an electric vehicle (electric vehicle) to which a motor control system of Example 1 is applied. 1 is a control block diagram of a motor control system according to a first embodiment. 5 is a flowchart illustrating unique information setting processing executed in the first embodiment. It is explanatory drawing which shows the motor torque accuracy deterioration phenomenon at the time of high rotation. It is a map figure which shows an example of the motor output possible maximum torque according to motor rotation speed. It is a map figure which shows an example of the motor output possible maximum torque according to a motor command torque. It is a map figure which shows an example of the motor output possible maximum torque according to an accelerator opening.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a mode for carrying out a motor control system of the present invention will be described based on a first embodiment shown in the drawings.

Example 1
First, the configuration of the motor control system according to the first embodiment will be described by dividing it into “the overall system configuration”, “the detailed configuration of the motor specific information control system”, and “the specific information setting processing configuration”.

[Overall system configuration]
FIG. 1 is an overall system configuration diagram illustrating an electric vehicle (electric vehicle) to which the motor control system of the first embodiment is applied. The overall system configuration of the motor control system according to the first embodiment will be described below with reference to FIG.

  The motor control system according to the first embodiment is mounted on an electric vehicle (an example of an electric vehicle) S illustrated in FIG. The electric vehicle S includes a motor / generator MG (motor), an automatic transmission AT (other devices other than the motor), a propeller shaft PS, a differential DF, a left drive shaft DSL, a right drive shaft DSR, It has a left rear wheel RL (drive wheel) and a right rear wheel RR (drive wheel). Note that FL is the left front wheel and FR is the right front wheel.

The motor / generator MG is a synchronous motor / generator in which a permanent magnet is embedded in a rotor and a stator coil is wound around a stator, and includes a rotor R, a U-phase stator coil U, a V-phase stator coil V, A W-phase stator coil W is provided. Then, based on a control command from the motor controller 1, the three-phase alternating current generated by the inverter 2 is applied to these three-phase stator coils U, V, W to rotate.
The motor / generator MG can operate as an electric motor that rotates the rotor R in response to the supply of electric power from the battery 3 (hereinafter, this operation state is referred to as “power running”), and the rotor R is moved to the left and right. When receiving rotational energy from the wheels (drive wheels) RL, RR, the battery 3 can be charged by functioning as a generator that generates electromotive force at both ends of each of the stator coils U, V, W (hereinafter, referred to as “power generator”). This operating state is called “regeneration”). The rotor R of the motor / generator MG is connected to a transmission input shaft (not shown) of the automatic transmission AT.

  The automatic transmission AT is a stepped transmission that automatically switches between two forward speeds and one reverse speed according to the vehicle speed, the accelerator opening, and the like.

As shown in FIG. 1, the control system of the electric vehicle S includes a motor controller 1 (motor control means), an inverter 2, a battery 3, an AT controller 4 (device control means), and an integrated controller 5. It is configured.
The motor controller 1 and the AT controller 4 and the integrated controller 5 are connected via a CAN communication line 6 capable of exchanging information with each other. 7 is a motor rotation angle sensor, 8 is a motor rotation speed sensor, 9 is an accelerator opening sensor, 10 is a vehicle speed sensor, and 11 is a selected range position (N range, D range, R range, P range, etc.). This is an inhibitor switch for detecting.

The motor controller 1 includes information from the motor rotation angle sensor 7 that detects the rotational position of the rotor R of the motor / generator MG, target MG torque command and target MG rotation speed command from the integrated controller 5, and other necessary information. Enter. Then, a command for controlling the motor operating point (Nm, Tm) of motor / generator MG is output to inverter 2.
Here, the motor controller 1 is provided in a position different from the set position of the motor / generator MG in the electric vehicle S, and is less susceptible to vibration and heat from the motor / generator MG.
Although not shown in FIG. 1, the battery controller in the battery 3 monitors the battery SOC indicating the charge capacity of the battery 3, and this battery SOC information is used as control information for the motor / generator MG. And supplied to the integrated controller 5 through the CAN communication line 6.

The AT controller 4 inputs information from an accelerator opening sensor 9, a vehicle speed sensor 10, an inhibitor switch 11, and the like. When traveling with the D range selected, the optimum gear is searched from the operating point determined by the accelerator opening APO and the vehicle speed VSP, and a control command for obtaining the searched gear is sent to the AT hydraulic pressure in the automatic transmission AT. Output to control valve.
Here, the AT controller 4 is provided in a position different from the set position of the automatic transmission AT in the electric vehicle S, and is less susceptible to vibration and heat from the automatic transmission AT.

  The integrated controller 5 manages the energy consumption of the entire vehicle and has a function of running the vehicle with the highest efficiency. The integrated controller 5 is provided with a motor rotation speed sensor 8 for detecting the motor rotation speed and other sensors and switches. Necessary information and information are input via the CAN communication line 6. Then, the target MG torque command and the target MG rotation speed command are calculated and output to the motor controller 1.

The motor controller 1 includes a first memory (first information storage unit) 1A that stores rewritable information unique to the motor / generator MG, and an information control unit (information) that controls information stored in the first memory 1A. Control means) 1B.
The AT controller 4 includes a second memory (second information storage unit) 4A that stores rewritable information unique to the motor / generator MG, and an AT memory 4B that stores rewritable information unique to the automatic transmission AT. And have.
Further, the integrated controller 5 includes an information calculation unit 5A that calculates specific information of the motor / generator MG stored in the first memory 1A and the second memory 4A.

Here, the unique information of the motor / generator MG (hereinafter referred to as “motor unique information”) is detection error information (relative angle error) of the motor rotation angle sensor 7.
That is, the motor / generator MG, which is a synchronous motor / generator, controls the motor torque by applying an appropriate current to the stator coils U, V, W of appropriate phases according to the rotation angle of the rotor R. . Therefore, it is necessary to detect the absolute rotation angle of the rotor R.
However, a relative angle error between the rotation angle detected by the motor rotation angle sensor 7 and the absolute rotation angle of the rotor R due to an attachment error of the motor rotation angle sensor 7 or an attachment error of the motor / generator MG. May occur. This angle error deteriorates the accuracy of the motor torque generated by the motor / generator MG. In addition, if the angle error is large, a large current flows through the power element of the inverter 2, which may cause a problem in the inverter 2.
Therefore, this angle error is stored as motor specific information, and when calculating the target MG torque command and the target MG rotation speed command in the integrated controller 5, an appropriate command is output by taking this angle error into consideration. ing.

[Detailed configuration of motor specific information control system]
FIG. 2 is a control block diagram of the motor control system according to the first embodiment. The detailed configuration of the motor specific information control system according to the first embodiment will be described below with reference to FIG.

The first memory 1A provided in the motor controller 1 stores motor specific information that is angle error information of the motor / generator MG. Here, the motor unique information stored in the first memory 1A is referred to as “first unique information”.
The first unique information is set to an initial value and stored in the first memory 1A when the motor controller 1 is shipped from the factory. This “initial value” is set to an arbitrary value in advance.

The second memory 4A provided in the AT controller 4 stores motor specific information which is angle error information of the motor / generator MG. Here, the motor unique information stored in the second memory 4A is referred to as “second unique information”.
The second unique information is set to an initial value and stored in the second memory 4A when the AT controller 4 is shipped from the factory. The initial value stored in the second memory 4A is also the same value as the initial value set in the first memory 1A.

  And this motor specific information is correct | amended by performing the learning control process by the information calculating part 5A of the integrated controller 5 during driving | running | working of the electric vehicle S, for example. That is, the first unique information and the second unique information are set to initial values when the controllers 1 and 4 are shipped from the factory, respectively, but are corrected according to the actual angle error detected when the electric vehicle S is running. The And each time it correct | amends by 5 A of information calculating parts, motor specific information is changed. The changed motor unique information is input to the first memory 1A and the second memory 4A, and the first unique information and the second unique information stored therein are rewritten to the changed motor unique information, It is stored as new first unique information and second unique information.

  Furthermore, when a key switch (not shown) provided in the electric vehicle S is ON-controlled, the first unique information stored in the first memory 1A and the second unique information stored in the second memory 4A are Are input to an information control unit 1B provided in the motor controller 1, respectively.

Here, the information control unit 1B includes an information comparison unit 1c and an information setting unit 1d.
The information comparison unit 1c compares the first unique information and the second unique information input from the memories 1A and 4A to determine whether or not they are different, and whether each unique information is an initial value. Determine whether.
The information setting unit 1d executes unique information setting processing, which will be described later, and sets new motor specific information based on the determination result of the information comparison unit 1c. The motor specific information is input to the first memory 1A, and the first specific information originally stored in the first memory 1A is rewritten with the input motor specific information as new first specific information. Remembered.

[Unique information setting processing configuration]
FIG. 3 is a flowchart illustrating the unique information setting process executed in the first embodiment. Hereinafter, each step of the unique information setting process will be described with reference to FIG.

  In step S1, it is determined whether or not a key switch provided in the electric vehicle S is ON-controlled. If YES (ON-controlled), the process proceeds to step S2. If NO (ON control is not performed), step S1 is repeated.

In step S2, following the determination of the key switch ON control in step S1, it is determined whether or not the first unique information stored in the first memory 1A is an initial value. If YES (first unique information = initial value), the process proceeds to step S3. If NO (first unique information ≠ initial value), the process proceeds to step S5.
Here, the case where the first unique information is an initial value is a state in which the motor controller 1 has been replaced with a new part as shipped from the factory and has not been corrected by the information calculation unit 5A.

In step S3, following the determination that the first unique information = initial value in step S2, it is determined whether or not the second unique information stored in the second memory 4A is the initial value. If YES (second unique information = initial value), the process proceeds to step S6. If NO (second unique information ≠ initial value), the process proceeds to step S4.
Here, the case where the second unique information is an initial value is a state in which the AT controller 4 is replaced with a new part as shipped from the factory and is not corrected by the information calculation unit 5A.

In step S4, following the determination that the second unique information is not equal to the initial value in step S3, the second unique information that is not the initial value is set as new motor unique information and input to the first memory 1A, and the process proceeds to the end.
That is, when the first unique information is an initial value and the second unique information is not an initial value, the second unique information is written in the first memory 1A as new first unique information.

  In step S5, following the determination that the first unique information is not equal to the initial value in step S2, it is determined whether or not the first unique information and the second unique information do not match. If YES (first unique information ≠ second unique information), the process proceeds to step S6. In the case of NO (first unique information = second unique information), it is assumed that the first unique information and the second unique information are motor unique information appropriately set by the information calculation unit 5A of the integrated controller 5, Go to the end.

In step S6, following the determination that the second unique information = initial value in step S3 or the first unique information ≠ second unique information in step S5, the first unique information and the second unique information are used. The obtained statistical processing value is set as new motor specific information and inputted to the first memory 1A, and the process proceeds to step S7.
That is, when the process proceeds from step S2 to step S3 and it is determined that both the first unique information and the second unique information are initial values, or the process proceeds from step S2 to step S5, the first unique information Is not an initial value, and if it is determined that the first unique information and the second unique information do not match, the statistical processing value obtained from the first unique information and the second unique information is used as the new first unique information. Is written in the first memory 1A.
Here, the “statistical processing value” is a median value, mode value, average value, and median value, mode value, and average value of unique information in production.

In step S7, following the writing of the statistical processing value in step S6, the motor torque limit for limiting the output torque of the motor / generator MG according to the rotational speed of the motor / generator MG or the required driving force to the motor / generator MG. Execute the process and go to the end.
That is, when the motor controller 1 controls the motor / generator MG based on the statistical processing value written as the new first unique information, the maximum outputable value of the output torque of the motor / generator MG is set to an arbitrary value. The motor torque limiting process is performed.

Here, the “motor torque limit process” is a so-called system protection process that prevents the deterioration of torque control accuracy and the occurrence of problems due to overcurrent even if the difference between accurate motor specific information and statistical processing values is large. .
When the angle error of the motor / generator MG is different from the accurate information, the accuracy of the motor torque control is remarkably deteriorated in the region where the motor rotation speed is high. This is because the flux-weakening control is required as the motor speed increases, and the motor current vector is controlled near the d-axis that is the magnetic flux direction of the rotor R.
That is, as shown in FIG. 4, in the motor low rotation speed region away from the d-axis in the power running region, the change amount of the q-axis current is ΔT1 when the angle error deviation (relative angle error) is θ. Yes. On the other hand, in the motor high rotation speed region close to the d-axis, even if the relative angle error is θ, the amount of change in the q-axis current is ΔT2. Here, the “q-axis current” is a current component that contributes to the control of the motor torque, and the torque change amount increases as the change amount of the q-axis current increases. That is, even if the relative angle error is the same, the torque change amount becomes larger in the motor high rotation speed region than in the motor low rotation speed region, and the torque control accuracy deteriorates.

  Therefore, in the “motor torque limiting process”, as shown in FIG. 5, when the motor rotational speed becomes larger than the predetermined value α, the maximum output possible value of the output torque of the motor / generator MG is gradually increased as the motor rotational speed becomes higher. Set to a smaller value to limit the output torque.

Next, the operation will be described.
The functions of the motor control system of the first embodiment are as follows: “unique information control action when replacing a new motor controller”, “unique information control action when replacing a used motor controller / used AT controller”, “unique when replacing a new motor controller / new AT controller” The description will be divided into “information control action” and “normal driving unique information control action”.

[Specific information control action when replacing a new motor controller]
The first memory 1A provided in the motor controller 1 is set to the factory default value. In the electric vehicle S of the first embodiment, when the motor controller 1 is replaced with a motor controller 1 of a new part, an initial value is stored as first unique information in the first memory 1A. At this time, since the AT controller 4 has not been replaced, predetermined second specific information corrected according to the motor / generator MG before the replacement of the motor controller 1 is stored in the second memory 4A.

In this case, in the flowchart shown in FIG. 3, the process proceeds from step S 1 → step S 2 → step S 3 → step S 4, and the second unique information stored in the second memory 4 A provided in the AT controller 4 is new. The first unique information is written to the first memory 1A.
Here, the information controller 1B that executes the unique information setting process and writes the new first unique information in the first memory 1A is provided in the motor controller 1. For this reason, it is not necessary to set the fixed information using a separate registration device or the like, and the replacement work of the motor controller 1 can be easily performed.

[Specific information control action when used motor controller / used AT controller is replaced]
In the electric vehicle S of the first embodiment, when the motor controller 1 is replaced with another motor controller 1 that is a used part, and the AT controller 4 is replaced with another AT controller 4 that is a used part, the first memory 1A has the first Some value is stored as the unique information, and some value is also stored as the second unique information in the second memory 4A.

In this case, in the flowchart shown in FIG. 3, the process proceeds from step S1 to step S2 to step S5. If the first unique information and the second unique information do not match, the process proceeds to step S6. Then, the statistical processing value obtained from the first unique information and the second unique information is written in the first memory 1A as new first unique information.
Thereby, even if the first unique information stored in the first memory 1A provided in another motor controller 1 which is a used part is different from the accurate unique information of the motor / generator MG, for example, the nearest maintenance is performed. You can travel to destinations such as factories.

Here, when only the motor controller 1 is replaced and the AT controller 4 is not replaced, the first unique information may be set using the second unique information stored in the second memory 4A. However, if the motor controller 1 is a used part, some first unique information is already recorded in the first memory 1A. Therefore, it is indistinguishable from the case where only the AT controller 4 is replaced without replacing the motor controller 1.
On the other hand, when the first unique information is not the initial value and the first unique information and the second unique information do not match, the statistical processing value is set as the new first unique information, so that the second The electric vehicle S can be driven to the destination without determining whether the second unique information recorded in the memory 4A is correct.

  For example, when the first unique information is not an initial value and the first unique information and the second unique information do not match, it is conceivable that the motor controller 1 is not activated, for example. In this case, when the user of the electric vehicle S replaces the motor controller 1 with another used motor controller 1 because the motor controller 1 has failed, the motor controller 1 does not start, and the motor / generator MG does not drive. Therefore, the electric vehicle S cannot be self-propelled to a destination such as a maintenance factory, and there arises a problem that it must be moved manually.

Further, in the first embodiment, when the statistical processing value is written in the first memory 1A as new first unique information, the process proceeds to step S7, and the output torque from the motor / generator MG is limited according to the motor rotational speed. To do.
That is, as shown in FIG. 5, the maximum output possible value of the motor output torque is limited as the motor rotation speed increases.
Thereby, it is possible to prevent the torque control accuracy of the motor / generator MG from being extremely deteriorated. In addition, the occurrence of problems in the inverter 2 due to the overcurrent flowing tends to occur when the motor output torque is large. Therefore, by limiting the motor output torque, it is possible to prevent the occurrence of problems due to overcurrent.

[Inherent information control action when replacing a new motor controller / new AT controller]
In the electric vehicle S of the first embodiment, when the motor controller 1 is replaced with another motor controller 1 of a new part and the AT controller 4 is replaced with another AT controller 4 of a new part, the first memory 1A has a first An initial value is stored as unique information, and an initial value is also stored as second unique information in the second memory 4A.

In this case, in the flowchart shown in FIG. 3, the process proceeds from step S1, step S2, step S3, and step S6. Then, the statistical processing value is written in the first memory 1A as new first unique information.
As a result, even if there is a mistake in writing motor-specific information in the production factory of the motor controller 1 (when a value different from the initial value is written), the electric vehicle can reach a desired position such as a rework area. S can be self-propelled and repaired.

  If the motor controller 1 is not started in the motor controller 1 production factory when a motor-specific information writing error occurs, it cannot be repaired by self-running to a desired position such as a rework area. . And when moving by hand without being able to run independently, the production line of the electric vehicle S may be stopped temporarily, and productivity may deteriorate at that time.

When the statistical processing value is written in the first memory 1A as new first unique information, the process proceeds to step S7, where the output torque from the motor / generator MG is limited according to the motor speed.
As a result, it is possible to prevent the torque control accuracy of the motor / generator MG from being extremely deteriorated, and to prevent the occurrence of problems due to overcurrent.

[Inherent information control during normal driving]
In the electric vehicle S of the first embodiment, when traveling without exchanging both the motor controller 1 and the AT controller 4, the first unique information stored in the first memory 1A and the second memory 4A are stored. The second unique information is corrected by the information calculation unit 5A of the integrated controller 5 according to the actual angle error.
Here, the motor specific information obtained by the information calculation unit 5A is input to the first memory 1A and the second memory 4A, respectively, as shown in FIG. Therefore, the first unique information matches the second unique information.

  In this case, in the flowchart shown in FIG. 3, the process proceeds from step S 1 → step S 2 → step S 5 → end, and the motor / generator MG is used using the first unique information stored in the first memory 1 A provided in the motor controller 1. Control.

Next, the effect will be described.
In the motor control system of the first embodiment, the effects listed below can be obtained.

(1) It has a first information storage unit (first memory) 1A for storing unique information of a motor (motor / generator) MG that is set to an initial value at the time of shipment from the factory and is rewritable thereafter. Motor control means (motor controller) 1 for controlling the motor MG based on the first unique information stored in the storage unit 1A;
It has a second information storage unit (second memory) 4A that stores the unique information of the motor MG, which is set to an initial value at the time of shipment from the factory, and can be rewritten thereafter, and is a device other than the motor MG (automatic shifting) Machine) device control means (AT controller) 4 for controlling AT;
The first unique information provided in the motor control means 1 and stored in the first information storage unit 1A is an initial value, and the second unique information stored in the second information storage unit 4A is not an initial value. Information control means (information control unit) 1B for writing the second specific information as the first specific information in the first information storage unit 1A;
It was set as the structure provided with.
Thereby, the replacement work of the motor controller 1 that controls the motor / generator MG can be easily performed.

(2) The information control means (information control means) 1B
When both of the first unique information and the second unique information are initial values, or when the first unique information is not an initial value and the first unique information and the second unique information do not match Is
The statistical processing value is written in the first information storage unit (first memory) 1A as the first unique information.
As a result, in addition to the effect of (1) above, even if the first unique information stored in the first memory 1A is not correct, for example, by replacing the motor controller 1, the self-running of the electric vehicle S can be performed. It is possible to move to a target with a motor driving force.

(3) When the motor control means (motor controller) 1 controls the motor (motor / generator) MG based on the statistical processing value written as the first unique information, the motor control means (motor controller) 1 responds to the rotational speed of the motor MG. Thus, the output torque of the motor MG is limited.
As a result, in addition to the effect of (2) above, it is possible to prevent the torque control accuracy of the motor / generator MG from being extremely deteriorated and to prevent the occurrence of problems such as the inverter 2 due to the overcurrent flowing. .

  The motor control system of the present invention has been described based on the first embodiment. However, the specific configuration is not limited to the first embodiment, and the gist of the invention according to each claim of the claims is described. Unless it deviates, design changes and additions are allowed.

In the first embodiment, when the motor torque limiting process is performed, the maximum output possible value of the output torque of the motor / generator MG is gradually set to a smaller value as the motor rotational speed becomes larger than the predetermined value α. Not limited to. The torque change amount (torque deviation amount) due to the deterioration of the torque control accuracy of the motor / generator MG increases as the command torque (target MG torque command value) for the motor / generator MG increases. Therefore, as shown in FIG. 6, when the motor command torque becomes greater than the predetermined value β, the maximum output torque of the motor / generator MG is gradually set to a smaller value as the motor command torque increases, and the motor output torque is You may restrict.
Further, the accelerator opening APO has a proportional relationship with the motor command torque, and the accelerator opening APO and the motor command torque are substantially equivalent. For this reason, as shown in FIG. 7, even when the accelerator opening APO is larger than the predetermined value γ, the maximum output possible torque of the motor / generator MG is gradually set to a smaller value as the accelerator opening APO becomes larger. The motor output torque may be limited.

In addition, when the statistical processing value is written in the first memory 1A as new first specific information and the motor / generator MG is controlled based on the new first specific information that is the statistical processing value, It is assumed that the 1 unique information is different from the accurate motor unique information.
Therefore, a display indicating an abnormality may be displayed on a vehicle-mounted display means such as a travel meter or a navigation device to notify the driver of the abnormality, and the failure may be recorded in the first memory 1A or the like. The abnormality notification to the driver may be performed not only by display but also by voice or the like.

  In the first embodiment, the automatic transmission AT is used as equipment other than the motor / generator MG, and the AT controller 4 is used as equipment control means for controlling equipment other than the motor. However, the device control means including the second information storage unit that stores the motor specific information other than the motor controller 1 is not limited to this. For example, it may be a control means for controlling an in-vehicle air conditioner, a power window, a charger, or the like.

In the first embodiment, the motor controller 1, the AT controller 4, and the integrated controller 5 are connected through CAN communication lines 6 that can exchange information with each other, and information is input / output through the CAN communication lines 6. Although the example which performs is shown, it is not restricted to this.
For example, the motor controller 1 and the AT controller 4 may have a wireless communication function, and motor specific information may be input / output via the wireless communication function.

  In the first embodiment, the example in which the motor control system of the present invention is applied to the electric vehicle S is shown, but the present invention is not limited to this. Any electric vehicle such as a hybrid vehicle or a fuel cell vehicle can be applied.

S Electric car (electric vehicle)
MG motor / generator (motor)
AT automatic transmission (other equipment)
1 Motor controller (motor control means)
1A 1st memory (1st information storage part)
1B Information control unit (information control means)
1c Information comparison unit 1d Information setting unit 2 Inverter 3 Battery 4 AT controller (device control means)
4A 2nd memory (2nd information storage part)
4B AT memory 5 Integrated controller 5A Information calculation section

Claims (3)

The motor has a first information storage unit that is set to an initial value at the time of shipment from the factory and stores unique information of the rewritable motor, and the motor is based on the first unique information stored in the first information storage unit. Motor control means for controlling
An initial value at the time of shipment from the factory, and has a second information storage unit that stores unique information of the rewritable motor, and device control means for controlling devices other than the motor;
When the first unique information provided in the motor control means and stored in the first information storage unit is an initial value, and the second unique information stored in the second information storage unit is not an initial value, Information control means for writing second specific information as the first specific information in the first information storage unit;
A motor control system comprising: The motor control system according to claim 1,
The information control means includes
When both of the first unique information and the second unique information are initial values, or when the first unique information is not an initial value and the first unique information and the second unique information do not match Is
A motor control system, wherein a statistical processing value is written in the first information storage unit as the first unique information. The motor control system according to claim 2,
When the motor control means controls the motor based on the statistical processing value written as the first unique information, the output torque of the motor depends on the rotational speed of the motor or the required driving force to the motor. A motor control system characterized by restricting.