WO2017212911A1 - モータ制御装置及びそれを搭載した電動パワーステアリング装置並びに車両 - Google Patents
モータ制御装置及びそれを搭載した電動パワーステアリング装置並びに車両 Download PDFInfo
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- WO2017212911A1 WO2017212911A1 PCT/JP2017/019171 JP2017019171W WO2017212911A1 WO 2017212911 A1 WO2017212911 A1 WO 2017212911A1 JP 2017019171 W JP2017019171 W JP 2017019171W WO 2017212911 A1 WO2017212911 A1 WO 2017212911A1
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- Prior art keywords
- gate drive
- connection protection
- reverse connection
- protection fet
- motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
- B62D5/046—Controlling the motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0403—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by constructional features, e.g. common housing for motor and gear box
- B62D5/0406—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by constructional features, e.g. common housing for motor and gear box including housing for electronic control unit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
- H02P25/22—Multiple windings; Windings for more than three phases
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2201/00—Indexing scheme relating to controlling arrangements characterised by the converter used
- H02P2201/09—Boost converter, i.e. DC-DC step up converter increasing the voltage between the supply and the inverter driving the motor
Definitions
- a motor having two system windings is connected to a power supply by two reverse connection protection FETs in common, two drive control systems (MCU (Micro Controller Unit), CPU (Central Processing Unit), In a motor control device that is driven and controlled by an MPU (Micro Processor Unit), microcomputer, etc., even if one drive control system becomes abnormal (including a failure), it is connected reversely by the drive signal of the other normal drive control system.
- the present invention relates to a motor control device, an electric power steering device and a vehicle in which the protection FET is kept ON to achieve downsizing and cost reduction.
- An electric power steering device which is equipped with a motor control device and applies a steering assist force (assist force) to the steering mechanism of the vehicle by the rotational force of the motor, transmits the driving force of the motor to a gear or belt via a reduction gear. With this transmission mechanism, a steering assist force is applied to the steering shaft or the rack shaft.
- EPS electric power steering device
- Such a conventional electric power steering apparatus performs feedback control of the motor current in order to accurately generate the torque of the steering assist force.
- the motor applied voltage is adjusted so that the difference between the steering assist command value (current command value) and the motor current detection value is small.
- the adjustment of the motor applied voltage is a duty of PWM control. It is done by adjusting.
- a general configuration of an electric power steering device is described with reference to FIG. 1.
- a column shaft (steering shaft, handle shaft) 2 of a handle 1 is a reduction gear 3, universal joints 4a and 4b, a pinion rack mechanism 5,
- the tie rods 6a and 6b are connected to the steered wheels 8L and 8R via the hub units 7a and 7b.
- the column shaft 2 is provided with a torque sensor 10 that detects the steering torque Th of the handle 1, and a motor 20 that assists the steering force of the handle 1 is connected to the column shaft 2 via the reduction gear 3. Yes.
- a control unit (ECU (Electronic Control Unit)) 30 that controls the electric power steering apparatus is supplied with electric power from a battery 13 as a power source, and also receives an ignition key signal through an ignition key 11.
- the control unit 30 calculates the current command value of the assist (steering assist) command based on the steering torque Th detected by the torque sensor 10 and the vehicle speed Vel detected by the vehicle speed sensor 12, and the calculated current command value
- the current supplied to the motor 20 is controlled by the voltage control value Vref that has been compensated for.
- the steering angle sensor 14 is not essential and may not be provided, and may be obtained from a rotation sensor connected to the motor 20.
- the control unit 30 is connected to a CAN (Controller Area Network) 40 that transmits and receives various types of vehicle information, and the vehicle speed Vel can also be received from the CAN 40.
- the control unit 30 can be connected to a non-CAN 41 that exchanges communications, analog / digital signals, radio waves, and the like other than the CAN 40.
- control unit 30 is mainly composed of a control unit of an MCU (including a CPU, an MCU, etc.), and general functions executed by a program in the control unit are shown in FIG.
- the configuration is as shown in FIG.
- the function and operation of the control unit 30 will be described with reference to FIG. 2.
- the steering torque Th from the torque sensor 10 and the vehicle speed Vel from the vehicle speed sensor 12 are input to the current command value calculation unit 31, and the current command value calculation unit 31.
- the calculated current command value Iref1 is added by the adding unit 32A and the compensation signal CM from the compensating unit 34 for improving the characteristics, and the added current command value Iref2 is limited to the maximum value by the current limiting unit 33.
- the current command value Irefm whose maximum value is limited is input to the subtraction unit 32B and subtracted from the motor current detection value Im.
- the duty is calculated, and the motor 20 is PWM driven via the inverter 37 with the PWM signal for which the duty is calculated.
- the motor current value Im of the motor 20 is detected by the motor current detection means 38, and is input to the subtraction unit 32B and fed back.
- the compensation unit 34 adds the detected or estimated self-aligning torque (SAT) to the inertia compensation value 342 by the addition unit 344, and further adds the convergence control value 341 to the addition result by the addition unit 345, and the addition
- the result is input as a compensation signal CM to the adder 32A to improve the characteristics of the current command value Iref1.
- the PWM control unit 36 sets the voltage control value Vref to a three-phase component according to a predetermined formula.
- the duty calculation unit 36A for calculating the PWM duty values D1 to D6 of the current, and the gate drive unit 36B for driving the gate of the FET as the drive element with the PWM duty values D1 to D6 and for turning on / off by compensating for the dead time It consists of and.
- the modulation signal (carrier) CF is input to the duty calculator 36A, and the duty calculator 36A calculates the PWM duty values D1 to D6 in synchronization with the modulation signal CF.
- the inverter 37 is constituted by a three-phase bridge of FETs, and drives the motor 20 when each FET is turned ON / OFF with PWM duty values D1 to D6.
- a motor release switch 23 is interposed between the inverter 37 and the motor 20 to cut off the supply of current when the assist control is stopped.
- the motor opening switch 23 is composed of an FET with a parasitic diode inserted in each phase.
- FIG. 4 shows a star-connected three-phase motor, in which one system is composed of a U-phase winding UW1, a V-phase winding VW1, and a W-phase winding WW1, and the other one is a U-phase winding UW2. It consists of a V-phase winding VW2 and a W-phase winding WW2. The motor is driven by passing a three-phase current through the windings UW1 to WW1 or the windings UW2 to WW2.
- FIG. 5 shows a delta-connected three-phase motor.
- One system is composed of a U-phase winding UW1, a V-phase winding VW1, and a W-phase winding WW1, and the other one is a U-phase winding UW2. , V-phase winding VW2 and W-phase winding WW2.
- the motor is driven by passing a three-phase current through the windings UW1 to WW1 or the windings UW2 to WW2.
- the motor 120 having such a multi-system motor winding is driven and controlled by, for example, a two-system drive control system (MCU, microcomputer, etc.) as shown in FIG.
- MCU two-system drive control system
- the entire control is performed by the MCU 100, and the first system winding # 1 of the motor 120 having the two system motor windings is driven and controlled by the inverter 121A via the motor opening switch 122A, and the second system winding # 2 is controlled. Is driven and controlled by an inverter 121B via a motor release switch 122B.
- the MCU 100 performs ON / OFF control of the FETs 1A to 6A of the inverter 121A via the gate driving unit 130, and performs ON / OFF control of the FETs 1B to 6B of the inverter 121B via the gate driving unit 140.
- the inverter 121A is supplied with power from the battery 150
- the inverter 121B is supplied with power from the battery 150.
- Patent Document 1 In such a two-system control electric power steering apparatus, as shown in, for example, Japanese Patent No. 4998366 (Patent Document 1), an excessive current flows to the ECU when the battery is reversely connected, and the reverse connection protection is performed so that the ECU does not burn out.
- An FET is provided in each system. That is, in Patent Document 1, two reverse connection protection FETs for battery reverse connection protection are provided, and when one system FET drive circuit (predriver) fails, the remaining one system reverse connection protection FET and inverter are connected. It is configured to continue operation.
- Patent Document 1 when one FET drive circuit fails, the remaining one reverse connection protection FET and inverter can continue to operate, and two reverse connection protection FETs are required. There is a problem that the cost becomes high.
- the present invention has been made under the circumstances as described above, and the object of the present invention is to detect an abnormality in one of the drive control systems when the drive control of a motor having two system windings is performed by two system drive control systems. Even if a failure occurs (including a failure), a common reverse connection protection FET is turned on by a drive signal of another normal drive control system, and a motor control device capable of downsizing and cost reduction is mounted. An electric power steering apparatus and a vehicle are provided.
- the present invention relates to a motor control device for a motor having two-system motor windings, and the above-described object of the present invention is to control the motor having a two-system motor winding via the MCU and the two-system gate drive unit.
- the object of the present invention is to control an MCU having a two-system motor winding, a two-system inverter that drives each of the two-system motor windings via a two-system gate drive unit,
- a reverse connection protection FET that is connected between the two systems of inverters and the power supply and supplies the power supply, and the reverse connection protection FET is obtained by a logical sum of gate drive voltages from the two systems of gate drive units. This is achieved by turning on / off.
- An electric power steering device equipped with the motor control device which drives and controls the motor with a current command value calculated based on at least a steering torque, and applies an assist force to a vehicle steering system, or a vehicle equipped with the electric power steering device.
- the motor control apparatus of the present invention since one reverse connection protection FET is shared by two inverters, the motor control apparatus can be reduced in size and cost.
- an electric power steering device equipped with a highly reliable ECU can be provided, and a vehicle equipped with the electric power steering device can be provided.
- the reverse connection protection FET is not arranged for each inverter, but only one common one is arranged for each inverter, and the drive signal for driving the reverse connection protection FET generated by the two FET gate drive units is logically processed.
- the drive signal for driving the reverse connection protection FET generated by the two FET gate drive units is logically processed.
- FIG. 7 shows the first embodiment of the present invention corresponding to FIG. 6, and a common reverse connection protection FET 160 is connected between the two systems of inverters 121A and 121B and the battery 150 as the power supply.
- the reverse connection protection FET 160 When the reverse connection protection FET 160 is OFF, power is supplied from the battery 150 to the inverters 121A and 121B via the parasitic diode 161.
- Drive signals (for example, charge pump voltages) SG1 and SG2 are output from the two gate drive units 130 and 140, respectively, and the drive signals SG1 and SG2 are wired-ORed (ored) via the diodes D1 and D2, respectively, and are protected against reverse connection. It is input to the gate of the FET 160.
- the gate drive units 130 and 140 receive a reverse connection protection FET drive command FDC from the MCU 100, and the gate drive units 130 and 140 output drive signals SG1 and SG2 based on the reverse connection protection FET drive command FDC.
- the MCU 100 is supplied with power from the system power supply 170, and the system power supply 170 is activated or shut down by the ignition key signal IG.
- the configuration of the gate drive units 130 and 140 is, for example, as shown in FIG. 8, and gate drive circuits 131 and 141 for driving the FETs of the inverters 121A and 121B on / off with duty command values RV1 and RV2 from the MCU 100, respectively.
- boosting power supplies 132 and 142 for supplying a driving voltage to the gate driving circuits 131 and 141.
- the step-up power supplies 132 and 142 are composed of up-converters and charge pumps.
- the gate drive circuits 131 and 141 receive the reverse connection protection FET drive command FDC from the MCU 100, and output drive signals SG1 and SG2, respectively.
- the reverse connection protection FET 160 is turned ON / OFF by the logical sum of the drive signals SG1 and SG2.
- the reverse connection protection FET 160 operates as shown in Table 1.
- the reverse connection protection FET 160 When the inverters 121 ⁇ / b> A and 121 ⁇ / b> B are driven to energize the two-system winding motor 120, the reverse connection protection FET 160 is OFF and a current flows through the parasitic diode 161. When the reverse connection protection FET 160 is OFF, the current flows through the parasitic diode 161 inside the reverse connection protection FET 160, so the loss of the reverse connection protection FET 160 increases, and the drain-source breakdown voltage is exceeded due to heat generation, regenerative power from the motor, or inductive load surge. May cause a malfunction. For this reason, when operating the inverters 121A and 121B, the MCU 100 turns on the reverse connection protection FET 160 before the inverter operation is started.
- the reverse connection protection FET 160 can be driven by the FET drive signal from the other FET drive system. Thereby, when one FET drive system becomes abnormal and the motor 120 is driven by another FET drive system and an inverter, the reverse connection protection FET 160 can be kept ON.
- the reverse connection protection FET drive command FDC is output from the MCU 100 as shown in FIG. 7 and FIG. 8, but is output from the system power supply 170 as shown in FIG. 9 and FIG. (Second embodiment).
- the reverse connection protection FET drive command FDC is one system, but the reverse connection protection FET drive command FDC is generated from the MCU 100 or the system power supply 170 in two systems (FDCA and FDCB).
- 11 and 12 or FIGS. 13 and 14 can also be adopted (third embodiment and fourth embodiment). That is, in the third embodiment shown in FIGS. 11 and 12, the reverse connection protection FET drive command FDCA of the system 1 is generated from the MCU 100 and input to the gate drive unit 130, and the reverse connection protection FET drive command FDCB of the system 2 is generated.
- the gate drive unit 140 are input to the gate drive unit 140, and the logical sum of the FET drive signals SG1 and SG2 is input to the gate of the reverse connection protection FET 160.
- the system power supply 170 generates the reverse connection protection FET drive command FDCA of the system 1 and inputs it to the gate drive unit 130, and also generates the reverse connection protection FET drive command FDCB of the system 2 Are input to the gate drive unit 140, and the logical sum of the FET drive signals SG1 and SG2 is input to the gate of the reverse connection protection FET 160.
- the two reverse connection protection FET drive commands FDCA and FDCB are simultaneously turned ON / OFF, and the reverse connection protection FET 160 operates as shown in Table 2 in both the third and fourth embodiments.
- the reverse connection protection FET 160 since the reverse connection protection FET drive command FDC is only one system, the reverse connection protection FET 160 is turned off when the reverse connection protection FET drive command FDC is changed from H to L due to an abnormality.
- the reverse connection protection FET drive commands FDCA and FDCB are independent in the third embodiment and the fourth embodiment, the reverse connection protection FET 160 can be turned ON even if one system reaches H ⁇ L output due to an abnormality.
- FIG. 15 shows a fifth embodiment of the present invention, in which a common reverse connection protection FET 160 is connected between two systems of inverters 121A and 121B and a battery 150 as a power supply, and the reverse connection protection FET 160 is OFF. At this time, power is supplied from the battery 150 to the inverters 121A and 121B via the parasitic diode 161.
- the reverse connection protection FET 160 is turned on / off by the FET drive unit 170, and the reverse drive protection FET drive command FDC is input from the system power supply 180 to the FET drive unit 170, and the gate drive voltages from the two systems of gate drive units 130 and 140, respectively.
- the FET drive unit 170 is composed of a semiconductor element such as a transistor.
- the gate drive units 130 and 140 are configured by gate drive circuits 131 and 141 that turn ON / OFF the FETs of the inverters 121A and 121B with duty command values RV1 and RV2 from the MCU 100, respectively,
- the drive circuit 131 and 141 are provided with boosting power supplies 132 and 142 for supplying a drive voltage and outputting gate drive voltages SG1 and SG2.
- the step-up power supplies 132 and 142 are composed of up-converters and charge pumps.
- the reverse connection protection FET 160 is turned ON / OFF by the FET drive unit 170, and the FET drive unit 170 receives the reverse connection protection FET drive command FDC from the system power supply 180 and the two gate drive units 130 and 140. Of the gate drive voltages SG1 and SG2 are input.
- the reverse connection protection FET 160 operates as shown in Table 3.
- the gate from the other system of the FET drive system can be operated with the reverse connection protection FET 160 turned on by the drive voltage.
- the reverse connection protection FET 160 can be driven by the gate drive voltage from the FET drive system. As a result, when one FET drive system becomes abnormal and the motor 120 is driven by another FET drive system and an inverter, the reverse connection protection FET 160 can be kept ON, and the loss of the reverse connection protection FET 160 is lost. Can be reduced.
- FIGS. 17 and 18 show a sixth embodiment of the present invention corresponding to FIGS. 15 and 16, respectively.
- a reverse connection protection FET drive command FDC is output from the MCU 100 and the FET drive unit 170 is output. To enter.
- reverse connection protection is performed via the FET drive unit 170 based on the reverse connection protection FET drive command FDC.
- the FET 160 is driven, the system power supply 180 or the MCU 100 does not generate the reverse connection protection FET drive command FDC, and a configuration as shown in FIG. 19 can be adopted (seventh embodiment). That is, in the seventh embodiment shown in FIG. 19, the FET drive unit 170 is omitted, and only the logical sum of the gate drive voltages SG1 and SG2 is input to the gate of the reverse connection protection FET 160.
- the reverse connection protection FET 160 is turned on by the logical sum, and when the two FET drive systems are stopped and the gate drive voltage is turned off, the reverse connection protection FET 160 is turned off. It is supposed to be. In this case, the reverse connection protection FET 160 is turned ON / OFF as the FET drive system is started / stopped.
- the FETs 1A to 6A, FET1B to FET6B, U1 to W1, U2 to W2, and the reverse connection protection FET 160 are all N-channel type MOS-FETs.
- the FET drive unit 170 can be configured by an analog switch using transistors Q1 and Q2, for example, as shown in FIG.
- FETs 1A to 6A, FET1B to FET6B, U1 to W1, U2 to W2, and the reverse connection protection FET 160 are all N-channel type MOS-FETs.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Steering Mechanism (AREA)
- Control Of Ac Motors In General (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
- Power Conversion In General (AREA)
- Inverter Devices (AREA)
- Control Of Multiple Motors (AREA)
Abstract
Description
2 コラム軸(ステアリングシャフト、ハンドル軸)
10 トルクセンサ
12 車速センサ
13、150 バッテリ
20、120 モータ
23、122A、122B モータ開放スイッチ
30 コントロールユニット(ECU)
31 電流指令値演算部
37、121A、121B インバータ
100 MCU
130、140 ゲート駆動部
160 逆接保護FET
161 寄生ダイオード
170,180 システム電源
Claims (13)
- 2系統モータ巻線を有するモータを制御するMCUと、
2系統のゲート駆動部を介して前記2系統モータ巻線のそれぞれを駆動する2系統のインバータと、
前記2系統のインバータと供給電源との間に接続された1個の逆接保護FETと、
を具備し、
前記逆接保護FETは、前記2系統のゲート駆動部からのゲートドライブ信号の論理和により、前記逆接保護FETをON/OFFするようになっていることを特徴とするモータ制御装置。 - 前記2系統のゲート駆動部はそれぞれ、前記2系統のインバータFETと前記逆接保護FETを駆動するためのゲートドライブ信号を出力するゲート駆動回路と、前記ゲート駆動回路に電圧を供給する昇圧電源とで構成されている請求項1に記載のモータ制御装置。
- 前記2系統のゲート駆動部に逆接保護FET駆動指令が入力され、前記2系統のゲート駆動部はそれぞれ前記逆接保護FET駆動指令に基づいて前記ゲートドライブ信号を出力するようになっている請求項1又は2に記載のモータ制御装置。
- システム電源から前記2系統のゲート駆動部に前記逆接保護FET駆動指令が入力され、前記2系統のゲート駆動部はそれぞれ前記逆接保護FET駆動指令に基づいて前記ゲートドライブ信号を出力するようになっている請求項3に記載のモータ制御装置。
- 前記MCUから前記2系統のゲート駆動部に前記逆接保護FET駆動指令が入力され、前記2系統のゲート駆動部はそれぞれ前記逆接保護FET駆動指令に基づいて前記ゲートドライブ信号を出力するようになっている請求項3に記載のモータ制御装置。
- システム電源から前記2系統のゲート駆動部に逆接保護FET駆動指令1及び2が入力され、前記2系統のゲート駆動部はそれぞれ前記逆接保護FET駆動指令及び2に基づいて前記ゲートドライブ信号を出力するようになっている請求項3に記載のモータ制御装置。
- 前記MCUから前記2系統のゲート駆動部に逆接保護FET駆動指令1及び2が入力され、前記2系統のゲート駆動部はそれぞれ前記逆接保護FET駆動指令1及び2に基づいて前記ゲートドライブ信号を出力するようになっている請求項3に記載のモータ制御装置。
- 2系統モータ巻線を有するモータを制御するMCUと、
2系統のゲート駆動部を介して前記2系統モータ巻線のそれぞれを駆動する2系統のインバータと、
前記2系統のインバータと供給電源との間に接続され、電源を供給する1個の逆接保護FETと、
を具備し、
前記2系統のゲート駆動部からのゲート駆動電圧の論理和で前記逆接保護FETをON/OFFするようになっていることを特徴とするモータ制御装置。 - 前記2系統のゲート駆動部はそれぞれ、前記2系統のインバータを駆動するゲート駆動回路と、前記ゲート駆動回路に電圧を供給すると共に、前記ゲート駆動電圧を出力する昇圧電源とで構成されている請求項8に記載のモータ制御装置。
- 逆接保護FET駆動指令が正常の場合には、前記ゲート駆動電圧のいずれか一方が異常であっても前記論理和により前記逆接保護FETのONを継続するようになっている請求項8又は9に記載のモータ制御装置。
- 前記逆接保護FET駆動指令及び前記論理和を入力して、前記逆接保護FETをON/OFFするFET駆動部が設けられている請求項8乃至10のいずれかに記載のモータ制御装置。
- 請求項1乃至11のいずれかに記載のモータ制御装置を搭載し、少なくとも操舵トルクに基づいて演算された電流指令値により前記モータを駆動制御し、車両の操舵系にアシスト力を付与することを特徴とする電動パワーステアリング装置。
- 請求項12に記載の電動パワーステアリング装置を搭載している車両。
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US16/306,775 US10486736B2 (en) | 2016-06-07 | 2017-05-23 | Motor control unit, electric power steering apparatus equipped with the same, and vehicle |
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