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Encoder-free servo motor controller

A servo motor and encoderless technology, which is applied in the direction of AC motor control, control system, and control/drive circuit connection, can solve the problems of low integration efficiency and high difficulty in the integration of robot joint components, and achieve improved integration and reliability sexual effect

Inactive Publication Date: 2019-04-12
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the requirements for the machining and installation accuracy of the encoder are very high, which will lead to high difficulty in the integration of robot joint components and low integration efficiency.

Method used

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  • Encoder-free servo motor controller
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  • Encoder-free servo motor controller

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Embodiment Construction

[0021] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] First, some terms involved in this application are introduced.

[0023] Counter electromotive force: refers to the tendency to resist the change of current to generate electromotive force, which is essentially induced electromotive force. Back electromotive force generally appears in electromagnetic coils, such as relay coils, solenoid valves, contactor coils, motors, inductors, etc.

[0024] Field Oriented Control (FOC): It uses mathematical methods to realize the decoupling control of torque and excitation of three-phase motors. The FOC algorithm is mainly to vector-decompose the control current of the motor into excitation current and quadrature-axis current. T...

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Abstract

The invention relates to an encoder-free servo motor controller, and belongs to the technical field of motor control. The encoder-free servo motor controller comprises a power supply module used for supplying power, a first processor, a second processor, a signal processing module, a current detection module, a counter electromotive force detection module, a three-phase power inverter and a driving module; the problem as follows is solved: when a motor controller with an encoder is used for driving a synchronous servo motor, the encoder is used for detecting the position and the rotating speedof a rotor, and the mechanical processing and installation precision requirements of the encoder are relatively high, so that the integration efficiency of an integrated joint assembly of an intelligent robot is relatively low; and the motor in the integrated joint assembly of the intelligent robot can be driven by the encoder-free servo motor controller; and therefore the integration level and reliability of the joint assembly can be improved.

Description

technical field [0001] The invention relates to an encoderless servo motor controller, which belongs to the technical field of motor control. Background technique [0002] Joint components are an important core component of a robot, especially a robotic arm. The joint components of the robot mainly rely on the motor controller to control the motor movement to realize the joint movement. [0003] Currently, motor controllers typically use encoders to detect the position and rotational speed of the motor rotor. However, the requirements for the machining and installation accuracy of the encoder are very high, which will lead to high difficulty in the integration of robot joint components and low integration efficiency. Contents of the invention [0004] The purpose of the present invention is to provide an encoderless servo motor controller. In order to achieve the above object, the present invention provides the following technical solutions: an encoderless servo motor c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/08H02K11/33H02K11/20H02K11/21H02K11/27
CPCH02P27/085H02K11/20H02K11/21H02K11/27H02K11/33
Inventor 张茂青董璐惠越超丁荣晖
Owner SUZHOU UNIV