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Rotary electric machine control device

A technology for rotating electrical machines and control devices, which is applied in motor control, AC motor control, control systems, etc., and can solve problems such as over-output

Pending Publication Date: 2022-03-22
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Here, if the cause of the stop is a temporary cause such as a momentary interruption of the power supply or a reset of the microcomputer, in the state where the output is increased in the normal system, if the stopped system recovers, unexpected actions such as over-output may occur.

Method used

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  • Rotary electric machine control device
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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0031] Figure 1 to Figure 13 shows the first embodiment. Such as figure 1 As shown, ECU 10 as a rotary electric machine control device controls the drive of motor 80 as a rotary electric machine, and is applied together with motor 80 to electric power steering 8 as a steering device for assisting steering operations of a vehicle, for example. figure 1 The structure of the steering system 90 provided with the electric power steering apparatus 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.

[0032] The steering wheel 91 is connected to a steering shaft 92 . A torque sensor 94 for detecting steering torque is provided on the steering shaft 92 . The torque sensor 94 has the 1st sensor part 194 and the 2nd sensor part 294, and the sensor which can each detect the failure detection of itself is made into duplication. A pinion ge...

no. 2 approach

[0122] Figure 14 ~ Figure 16 Shows the second embodiment. In the present embodiment, the drive mode selection process is different from the above-described embodiments, and therefore the description will focus on this point. In the present embodiment, even when shifting to the independent drive mode or the single-system drive mode, if the coordinated drive mode can be restored, the coordinated drive mode is restored.

[0123] based on Figure 14 The flow chart of the figure describes the drive mode selection process of this embodiment. The processing of S201, S202 and Figure 8 The processing of S101 and S102 in the same. When the communication between microcomputers is abnormal, it moves to S206. In addition, when the inter-microcomputer communication is normal and the cooperative driving is in progress, the process moves to S204 and the cooperative driving is continued, and when the cooperative driving is not in progress, the process moves to S203.

[0124] In S203, t...

other Embodiment approach

[0132] In the above-mentioned embodiment, the monitored abnormality is an uncoordinated abnormality, and the uncoordinated abnormality includes an inter-microcomputer communication abnormality and a synchronization abnormality. In other embodiments, either one of the inter-microcomputer communication abnormality or synchronization abnormality may be regarded as an uncoordinated abnormality. In addition, the abnormality to be monitored may be an abnormality other than an uncoordinated abnormality. In the above-described embodiments, the other system monitoring information is other system relay information. In other embodiments, other system monitoring information may use information other than other system relay information capable of monitoring the status of other systems. In the above embodiments, other system monitoring circuits are used to directly acquire other system relay information. In other implementations, other system monitoring information may also be obtained th...

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Abstract

The invention relates to a rotating electrical machine control device. A rotating electric machine control device (10) controls driving of a rotating electric machine (80) having motor windings (180, 280). The plurality of control units (150, 250) are capable of communicating with each other, and have drive control units (151, 251), mode selection units (152, 252), abnormality monitoring units (155, 255), and storage units (156, 256). The mode selection unit (152, 252) sets the normal drive mode to the coordinated drive mode, and switches the drive mode from the coordinated drive mode to the independent drive mode when a communication abnormality or a synchronization abnormality between the control units (150, 250), i.e., a non-coordinated abnormality, is detected. Furthermore, when it is determined that the other system is stopped on the basis of the other system monitoring information after shifting to the independent driving mode due to the uncoordinated abnormality, the mode selection unit (152, 252) switches the driving mode from the independent driving mode to the standby mode.

Description

[0001] Cross References to Related Applications [0002] This application is based on the patent application No. 2019-149072 filed on August 15, 2019, the content of which is cited here. technical field [0003] The present disclosure relates to rotating electrical machine controls. Background technique [0004] Conventionally, there is known a rotating electric machine control device that controls the drive of a motor by a plurality of control units. For example, in Patent Document 1, two control units are provided, and a command value calculated by one master control unit is sent to a slave control unit to make the two systems operate in cooperation. [0005] Patent Document 1: Japanese Patent Laid-Open No. 2018-130007 [0006] However, when a part of the system stops in the redundant system, the normal system may increase the output to compensate for the output of the stopped system. Here, if the cause of the stop is a temporary cause such as a momentary power failure ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/06H02P25/18H02P29/028
CPCH02P27/06H02P25/18H02P29/028H02P6/08B62D5/0484H02P25/22H02P29/024
Inventor 中村功一中岛信赖
Owner DENSO CORP
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