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Motor drive system
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A technology of motor drive and motor, applied in the field of motor drive system, can solve the problems of increasing the number of input and output terminals, too much information, etc.
Pending Publication Date: 2022-06-17
DENSO CORP
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In this structure, if one bus is used for communication, the amount of information is too much
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Abstract
The first actuator and the second actuator have a plurality of control calculation units and a motor driving unit. For any one of the control calculation units, a control calculation unit that is paired with the other actuator or a control calculation unit of another system in the same actuator has failed, or communication between the actuators or communication between the systems has been interrupted, and a control calculation unit that is paired with the other actuator or the control calculation unit of another system in the same actuator has failed. The state in which the control operation unit cannot transmit and receive normal information is defined as "in-system communication abnormal state". In an abnormal state of intra-system communication, each normal control calculation unit transmits, as "alternative information", information that cannot be transmitted by itself and information for inter-actuator communication received from another control calculation unit, in addition to information transmitted by itself during normal operation. The control calculation unit, which has received the information including the alternative information, continues the motor drive control using at least a portion of the received information.
Description
[0001] Cross References to Related Applications [0002] This application is based on Japanese Patent Application No. 2019-199400 filed on October 31, 2019, the contents of which are cited here. technical field [0003] The present disclosure relates to motor drive systems. Background technique [0004] Conventionally, in general, in a motor drive system for driving a motor, it is known that a plurality of control calculation units that perform calculations related to motor drive and a motor drive unit that drives based on a drive signal generated by the control calculation unit are redundantly provided. Structure. For example, in the fail-safe control device of the control system disclosed in Patent Document 1, if one of the two ECUs fails, the failed ECU is stopped, and the normal one ECU is used to continue control. In addition, if one of the two motors fails, the failed motor is stopped, and the normal one motor is used to continue control. [0005] Patent Document 1:...
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Application Information
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