A low-voltage high-current servo driver

A technology of servo drive and high current, which is applied in the control of electromechanical brakes, motor generator control, control of electromechanical transmission devices, etc. It can solve the problems of complicated and cumbersome debugging process and inconvenience for users, and achieve the effect of simplifying the debugging process and being easy to use

Active Publication Date: 2020-08-14
XIAN AEROSPACE PRECISION ELECTROMECHANICAL INST
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the complex and cumbersome debugging process of the existing low-voltage permanent magnet synchronous motor servo driver and the technical problems that are not convenient for users to use, the present invention provides a low-voltage high-current servo driver

Method used

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  • A low-voltage high-current servo driver
  • A low-voltage high-current servo driver
  • A low-voltage high-current servo driver

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Embodiment Construction

[0078] The present invention will be further described below in conjunction with accompanying drawing.

[0079] The low-voltage, high-current servo driver provided by the present invention adopts the FOC control algorithm, and the rated output phase current amplitude reaches 50A. The low-voltage, high-current servo driver includes a control circuit, a power circuit, and control software.

[0080] 1. Control circuit

[0081] The control circuit includes the main control CPU, parameter storage module, EtherCAT bus communication module, four-way SPI communication module, multiple communication interfaces, pulse / direction input interface, two-way isolated digital input and two-way isolated digital output (corresponding to attached figure 1 Medium I / O&AIn);

[0082] The main control CPU adopts STM32F405; the main control CPU provides two current sampling data input channels for the motor, and simultaneously collects the U-phase and W-phase current of the motor as the feedback of ...

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Abstract

In order to solve the technical problem that an existing low-voltage permanent magnet synchronous motor servo driver is complex and tedious in a debugging process and inconvenient to use, the invention provides a low-voltage large-current servo driver. The low-voltage large-current servo driver comprises a control circuit, a power circuit and control software, and is characterized in that when thecontrol software runs, the following steps are realized: 1) the number of pole pairs of a motor and the number of encoder bits are subjected to self-setting; 2, a motor rotor zero-phase angle self-setting is performed; 3 ) motor resistance and inductance self-setting is performed; 4) control parameter self-setting is performed; 5) a motor counter electromotive force coefficient ke and a torque coefficient kt self-setting is performed; and 6) self-setting of the rotating inertia of the motor rotor is carried out. According to the low-voltage large-current servo driver, the servo parameter debugging process is simplified, so that a user is easier to use.

Description

technical field [0001] The invention belongs to the field of industrial automation control and relates to a permanent magnet synchronous motor servo driver. Background technique [0002] Servo drive technology is one of the key technologies for CNC machine tools, industrial robots and other mechanical control. With the development of power electronics technology, computer technology and control theory, the development of servo drive technology has been further promoted. [0003] At present, there are many types of domestically produced servo drives. The common servo drives in the industrial automation industry generally use the mains (AC 220V or AC 380V) as the power input, and after rectification, they are used as the power supply for the DC bus of the servo drive; while in the field of low-voltage DC applications ( Such as DC 24V ~ 100V) mostly use brushed DC motor, brushless DC motor or stepper motor, and use the corresponding driver. The driver of the brushed DC motor g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/22
CPCH02P21/0003
Inventor 米乾宝朱美俊郭佳赟王超顾鹏宁志民任永毅傅豪樊锋宇
Owner XIAN AEROSPACE PRECISION ELECTROMECHANICAL INST
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