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System and method for controlling motor of wire-controlled braking system

A motor control and brake-by-wire technology, which is used in starting devices, rotation direction control, and single motor speed/torque control, etc., can solve the problems of related parameters and variable information to achieve control is not very accurate, there are many influencing factors, and it is not easy to maintain and other problems, to achieve the effect of convenient control, high safety factor and good real-time performance.

Active Publication Date: 2009-12-02
CHERY AUTOMOBILE CO LTD
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Problems solved by technology

This method can realize motor control, but its method is complicated and depends on complex devices. Due to too many related parameters and variable information, the control is not very accurate, and it is not easy to maintain, the cost is high, and there are many influencing factors during operation.

Method used

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  • System and method for controlling motor of wire-controlled braking system
  • System and method for controlling motor of wire-controlled braking system

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with the accompanying drawings.

[0011] In the present invention, the 32-bit chip MPC5604P outputs two complementary PWM signals to control the forward and reverse rotation and speed control of the motor. The PWM signal is input from the IN terminal of the chip. When the duty cycle of the PWM signal is between 0% and 50%, The motor rotates forward; when the duty cycle of the PWM signal is between 50% and 100%, the motor reverses. .

[0012] The motor drive chip adopts the dedicated chip BTS7960B, BTS7960B is a high-current half-bridge high-integration chip used in motor drive, the integrated drive IC has logic level input, current diagnosis, slope adjustment, dead time generation and over temperature, over voltage, Undervoltage, overcurrent and short circuit protection functions. The typical on-state resistance of BTS7960B is 16mΩ, and the driving current can reach 43A. The M-ports of the two BTS79...

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Abstract

The invention discloses a system and a method for controlling a motor of a wire-controlled braking system. The system comprises a control chip for outputting two circuits of complementary PWM signals, controlling the positive rotation and reverse rotation of the motor and controlling speed regulation, and two motor drive chips for driving the motor to positively rotate and reversely rotate, wherein the motor drive chips adopt a special chip BTS7960B. The system and the method are based on wire-controlled technology, change various complicated equipment devices into electronic elements and control the motor by software technology so that a circuit has simple design, convenient control, good real-time and high precision; and the system has the advantages of simple structure, economic construction cost, high safety coefficient and the like.

Description

technical field [0001] The invention belongs to the field of automobile brake control, in particular to an innovative technology of motor drive based on an embedded control system. Background technique [0002] At present, in the known technology, there is a synchronous motor control method and its device (the patent application number is CN01820372.8). This synchronous motor control method is characterized in that: it uses a synchronous The input terminal voltage and current of the motor and the equipment constant of the synchronous motor are used to detect the rotational position of the rotor; according to the detection result of the rotational position, the output current or output voltage of the inverter is controlled to offset the synchronous motor caused by periodic torque fluctuations. Speed ​​variation; supply the output voltage or output current of the inverter to the synchronous motor. This method can realize motor control, but its method is complex and depends on...

Claims

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Application Information

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IPC IPC(8): H02P6/08H02P6/22H02P6/30
Inventor 姜竹胜张亮
Owner CHERY AUTOMOBILE CO LTD
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