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Motor position signal fault processing method and system

A technology for motor position and signal failure, applied in electric steering mechanism, emergency protection circuit device, estimation/correction of motor parameters, etc., can solve the problem of no fault post-processing mechanism, and achieve the effect of satisfying torque demand

Active Publication Date: 2022-03-29
上海拿森汽车电子有限公司
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Problems solved by technology

[0002] The existing technology is mainly for TMR sensors, such as the TAD2141 angle sensor chip of TDK Company, which can output 4 differential signals of sin and cos, and then according to the TMR software angle decoding scheme provided by the company, the motor angle can be obtained. For reference documents, see TDK Company The official website document "TAD2141_Angle_sensor_specification", this document can correctly analyze the motor angle information for the fault-free 4-way differential signal of sin and cos, but when there is a partial failure of the 4-way differential signal of sin and cos, the document does not After-failure processing mechanism

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  • Motor position signal fault processing method and system
  • Motor position signal fault processing method and system
  • Motor position signal fault processing method and system

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[0024] In order to further set forth the technical means and effects that the present invention takes to achieve the intended purpose of the invention, the embodiments of the present invention are described in detail below, examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the embodiments of the present invention. Through the description of specific embodiments, the technical means and effects of the present invention to achieve the intended purpose can be understood more deeply and specifically, and the accompanying drawings are on...

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Abstract

The invention provides a motor position signal fault processing method and system.The motor position signal fault processing method comprises the steps that when it is detected that a differential signal of a position sensor breaks down, the fault type is obtained; if the fault type is partial signal failure, motor position information is acquired according to an effective differential signal; and if the fault type is that all the signals are invalid, cutting off motor assistance to enable the steering system to be in a safe mode. When part of signals of the MR sensor are available, motor position analysis can be continued according to the part of available MR signals, it is guaranteed that the motor is controllable, the limited power assisting capacity of the motor is reserved, and the torque requirement of a steering system for the power assisting motor is met.

Description

technical field [0001] The present invention relates to the technical field of EPS electric power steering systems, in particular to a method and system for processing motor position signal faults. Background technique [0002] The existing technology is mainly for TMR sensors, such as the TAD2141 angle sensor chip of TDK Company, which can output 4 differential signals of sin and cos, and then according to the TMR software angle decoding scheme provided by the company, the motor angle can be obtained. For reference documents, see TDK Company The official website document "TAD2141_Angle_sensor_specification", this document can correctly analyze the motor angle information for the fault-free 4-way differential signal of sin and cos, but when there is a partial failure of the 4-way differential signal of sin and cos, the document does not After-failure processing mechanism. [0003] Therefore, there is an urgent need for a motor position signal fault processing method and sys...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04H02H7/08H02P23/14
CPCH02H7/08H02P23/14B62D5/046B62D5/049
Inventor 陶喆朱心放苗会彬蔡润佳吴广庆田佰辉
Owner 上海拿森汽车电子有限公司
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