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Motor control device

A technology of motor control and control module, applied in the direction of AC motor control, control system, measuring device, etc., can solve the problems of high cost, large circuit board area, large number of materials, etc., to reduce material cost and occupied circuit board area Effect

Pending Publication Date: 2020-10-02
大陆汽车研发(重庆)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current technical solution, three half-bridges and corresponding half-bridge drive circuits and detection and diagnosis circuits are required to drive two pole motors, which has the problems of large amount of materials, high cost, and large occupied circuit board area.

Method used

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Embodiment Construction

[0011] In the following description, numerous specific details are set forth in order to enable those skilled in the art to fully understand the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. Furthermore, it should be understood that the invention is not limited to the particular embodiments described. Instead, it is conceivable to implement the present invention in any combination of the following features and elements, regardless of whether they relate to different embodiments. Accordingly, the following aspects, features, embodiments and advantages are by way of illustration only and should not be considered elements or limitations of the claims unless explicitly stated in the claims.

[0012] figure 1 A schematic diagram illustrating a motor control device according to one or more embodiments of the present invention. refer to figure 1 As shown, the motor con...

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Abstract

The invention provides a motor control device, which is suitable for driving a plurality of motors connected in parallel through an H bridge, and comprises: a H bridge, wherein the H bridge comprisestwo half bridges connected in parallel and arranged between a first high potential node and a first low potential node, and a plurality of motors are arranged between the middle points of the two halfbridges; a H bridge control module used for controlling the current feed to the plurality of motors and the rotation directions of the plurality of motors through four switches of the H bridge; and afault diagnosis module used for determining whether the plurality of motors have open-circuit faults based on the corresponding excitation currents when the plurality of motors are excited by a pulsevoltages which cannot enable the motors to rotate and the release currents generated by the plurality of motors after excitation. The motor control device has the advantages of being low in cost, small in occupied circuit board area, capable of detecting and diagnosing open-circuit faults of the motor and the like.

Description

technical field [0001] The invention relates to automotive electronics, in particular to a motor control device. Background technique [0002] The electric tailgate controller is an intelligent controller on a passenger car. It can drive the actuator to control the opening and closing of the vehicle's back door or trunk lid. The electric tailgate opening and closing actuator generally includes one or two electric braces. pole. [0003] The electric tailgate controller generally uses a half-bridge drive circuit to drive the DC brushed motor inside the electric strut, and through the forward and reverse rotation of the motor, the strut mechanism is driven to reciprocate to realize the electric opening and closing of the tailgate. [0004] In the current technical solution, the electric tailgate controller generally uses three half-bridges to drive two strut motors, as shown in Chinese utility model patent CN208040159U. In addition to the half-bridge circuit driving the strut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P5/74H02P27/06G01R31/34G01R31/54
CPCH02P5/74H02P27/06G01R31/343G01R31/54
Inventor 蔡巍巍肖涛
Owner 大陆汽车研发(重庆)有限公司
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