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Rotary electric device control device, and electric power steering device using same

A technology of rotating motors and control devices, which is applied in power steering mechanisms, electric steering mechanisms, AC motor control, etc., and can solve problems such as system mismatch

Active Publication Date: 2019-07-26
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, as in Patent Document 1, when each system independently calculates the assist control amount and performs current control independently, there is a possibility that a mismatch may occur between the systems.

Method used

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  • Rotary electric device control device, and electric power steering device using same
  • Rotary electric device control device, and electric power steering device using same
  • Rotary electric device control device, and electric power steering device using same

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0061] The first embodiment is shown in Figure 1 to Figure 11 . like figure 1 As shown, the ECU 10 as the rotating electrical machine control device of the present embodiment is applied to, for example, the electric power steering 8 for assisting the steering operation of the vehicle together with the motor 80 as the rotating electrical machine. figure 1 It is a diagram showing the overall configuration of a steering system 90 including the electric power steering device 8 .

[0062] figure 1 The configuration of a steering system 90 including the electric power steering device 8 is shown. The steering system 90 includes a steering wheel 91 as a steering member, a steering shaft 92 , a pinion 96 , a rack shaft 97 , wheels 98 , the electric power steering 8 , and the like. The steering wheel 91 is connected to a steering shaft 92 . A torque sensor 94 for detecting a steering torque Ts is provided on the steering shaft 92 . A pinion gear 96 is provided at the front end of...

no. 2 approach

[0138] The second embodiment is shown in Figure 12 as well as Figure 13 . In the second embodiment to the fifth embodiment and the seventh embodiment, since the control unit is different, the description will focus on this point. As shown in Figure 12, the first control unit 132 as the main control unit is the same as the first embodiment, and has a dq-axis current calculation unit 140, an assist torque command calculation unit 141, a q-axis current command calculation unit 142, a d-axis current The command calculation unit 143 , the first current feedback calculation unit 150 , the first three-phase voltage command calculation unit 161 , the first PWM calculation unit 163 , the first signal output unit 165 and the first communication unit 170 .

[0139] The second control unit 232 as the slave control unit includes the second dq axis current calculation unit 240, the second current feedback calculation unit 250, the second three-phase voltage command value calculation uni...

no. 3 approach

[0147] The third embodiment is shown in Figure 14 ~ Figure 16 . like Figure 14 As shown, the first control unit 133 as the main control unit has a dq-axis current calculation unit 140 , an assist torque command calculation unit 141 , a q-axis current command calculation unit 142 , a d-axis current command calculation unit 143 , and a current feedback calculation unit 175 , a first three-phase voltage command calculation unit 161 , a first PWM calculation unit 163 , a first signal output unit 165 , and a first communication unit 170 .

[0148] The current feedback calculation unit 175 performs current feedback calculation based on dq axis current command values ​​Id*, Iq*, and dq axis current detection values ​​Id1, Iq1, Id2, Iq2, and calculates dq axis voltage command values ​​Vd1*, Vq1*, Vd2 *, Vq2*.

[0149] The second control unit 233 as a slave control unit includes a dq-axis current calculation unit 240 , a second three-phase voltage command value calculation unit 26...

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Abstract

A rotary electric device control device (10) controls driving of a rotary electric device (80) having multiple coil sets (180, 280), and is provided with multiple drive circuits (120, 220) and multiple control units (131-136, 231-236). The control units (131-136, 231-236) have a signal output unit (165, 265) for outputting a control signal to the correspondingly provided drive circuit (120, 220),and can communicate with one another. The control units include one master control unit (131-136) and at least one slave control unit (231-236). The master control unit (131-136) calculates a commandvalue relating to the generation of a control signal in all control units (131-136, 231-236), and transmits the command value to the other control unit (231-236). The slave control unit (231-236) outputs a control signal based on the command value transmitted from the master control unit (131-136).

Description

[0001] Cross References to Related Applications [0002] This application is based on Japanese Patent Application No. 2016-220474 filed on November 11, 2016, Japanese Patent Application No. 2017-23443 filed on February 10, 2017, and Japanese Patent Application No. 2017-23443 filed on October 31, 2017. Patent Application No. 2017-209905, the content of which is quoted here. technical field [0003] The present disclosure relates to a rotary electric machine control device and an electric power steering device using the rotary electric machine control device. Background technique [0004] Conventionally, there is known an electric power steering apparatus that assists steering by using the driving force of a motor. For example, in Patent Document 1, two microcomputers are used to independently calculate the basic assist control amount. [0005] Patent Document 1: Japanese Patent Laid-Open No. 2011-195089 [0006] However, as in Patent Document 1, when each system independen...

Claims

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Application Information

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IPC IPC(8): H02P25/22B62D5/04B62D6/00H02P23/00H02P27/06B62D101/00B62D119/00
CPCB62D5/0484H02P5/74H02P6/10H02P21/05H02P25/22H02P21/22H02P5/46
Inventor 仓光修司中村功一冈笃子泷雅也株根秀树渡边祐希坂井利光大城洋佑
Owner DENSO CORP
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