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Method for controlling safety input of automobile motor

A technology of safe input and motor control, applied in motor control, electric vehicle charging technology, motors, etc., can solve problems such as signal source status cannot be updated in time, abnormal motor operation, system failure to receive, etc., to avoid motor operation problems, The effect of improving the safe operation ability

Active Publication Date: 2018-03-23
武汉欧拓莫科技有限公司
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Problems solved by technology

However, when unknown factors cause unstable operation of the signal source, in this single control mode, the system cannot identify the abnormality in time and accurately, which will lead to abnormal operation of the motor and cause safety problems
For example, if the signal source is obtained through CAN communication with the external system, if the system cannot receive CAN data due to damage to the terminal resistance, the state of the signal source cannot be updated in time, and the motor works abnormally; or by sampling a certain voltage or current of the system To obtain the signal source, if the system is partially short-circuited or disconnected, resulting in abnormal current, it will also cause the motor to work abnormally

Method used

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  • Method for controlling safety input of automobile motor
  • Method for controlling safety input of automobile motor

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] The present invention proposes a method for the safety input of automobile motor control to a great extent in view of the shortcomings of current automobile electronic products using a single signal transmission mode and using a single external signal source as a signal input source to control the motor. It guarantees the safety of the signal input when each motor of the car is running. The method comprises the steps of:

[0014] 1) After the system is powered on, the control module will periodically obtain the current state values ​​of the three external signals from the signal input module, and the calculation and voting unit of the control module calculates the motor speed corresponding to the current value of each signal source according to the control algorithm ( The range is 0%~100% of full scale); the external signal includes sensor signal, PWM signal in...

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Abstract

The invention discloses a method for controlling the safety input of an automobile motor. The operation of the motor is controlled through the current state values of the three external signal sources, and it is determined that at least two of the signal sources are effective signal sources in a safe state through calculation. The effective signal sources are used as safety input to control the safe operation of the motor. In this way, abnormal operation of the motor by a single abnormal signal source can be effectively avoided, and potential safety hazards are eliminated.

Description

technical field [0001] The invention relates to the field of automotive electronics technology, in particular to the field of automotive motor control safety input. Background technique [0002] At present, in automotive electronic products, a single signal source is used as a signal input source to control the motor. However, when unknown factors cause unstable operation of the signal source, in this single control mode, the system cannot identify the abnormality in time and accurately, which will lead to abnormal operation of the motor and cause safety problems. For example, if the signal source is obtained through CAN communication with the external system, if the system cannot receive CAN data due to the damage of the terminal resistance, the state of the signal source cannot be updated in time, and the motor works abnormally; or by sampling a certain voltage or current of the system To obtain the signal source, if the system is partially short-circuited or disconnected...

Claims

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Application Information

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IPC IPC(8): H02P29/02B60L15/20
CPCB60L15/20H02P29/02Y02T10/64Y02T10/72Y02T90/16
Inventor 孙香程毅崔丹杨延樑杨波樊书鑫李海鹏刘海前赵华涛
Owner 武汉欧拓莫科技有限公司
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