A multi-DC motor series system and torque control method

A DC motor and torque control technology, applied in the direction of DC motor speed/torque control, motor speed or torque control, control system, etc., can solve problems such as dependence and motor parameter influence, and achieve fast current response, Improve stability and save cost

Active Publication Date: 2021-08-06
CHANGAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, this idea relies too much on the mathematical model of the motor and is easily affected by the parameters of the motor

Method used

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  • A multi-DC motor series system and torque control method
  • A multi-DC motor series system and torque control method
  • A multi-DC motor series system and torque control method

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Embodiment Construction

[0049] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

[0050] see figure 1 , the present invention provides a multi-DC motor series system, including a PI control module, a reference torque calculation module, an actual torque calculation module, a hysteresis loop control module, a PWM generation module and a motor drive module, through the integration of the above modules to achieve n ...

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Abstract

The invention discloses a multi-direct current motor series system and a torque control method. n position sensors are used to detect the motor rotor positions of n direct current motors, and the actual rotational speeds of n direct current motors are obtained through rotational speed calculation, and then compared with n reference rotational speeds. For comparison, the reference current values ​​of n DC motors are obtained through the output of the PI controller; then n+1 reference torques are obtained through the reference torque calculation module; the transient current values ​​of n DC motors are detected, and the n DC motors The transient current value is obtained by the actual torque calculation module to obtain n+1 actual torque values; compare the calculated n+1 actual torques with n+1 reference torques, and then send the signal to n+1 A hysteresis loop controller generates n+1 output signals, and then generates 2n+2 PWM signals through the PWM module; input 2n+2 PWM signals and drive n+1 phase voltage inverter, so as to further drive the motor to realize Torque control. The invention can simplify circuit structure, save cost, realize optimized torque control effect, and improve system stability.

Description

technical field [0001] The invention belongs to the technical field of multi-DC motor control, and in particular relates to a multi-DC motor series system and a torque control method. Background technique [0002] With the development of production technology, higher requirements are put forward for the speed regulation accuracy, speed regulation range, static characteristics, dynamic response and torque ripple of DC motors. The control strategy based on the steady-state model can no longer meet the high-precision process requirements. In order to improve the dynamic performance, the control strategy must rely on the dynamic mathematical model of the motor. The most ideal control method is to control the torque and excitation components of the motor at the same time. That is to use the idea of ​​decoupling to decompose the complex speed control system into torque ring and magnetic linkage ring. [0003] However, this idea relies too much on the mathematical model of the m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P5/685H02P7/281
CPCH02P5/685H02P7/281H02P7/2815
Inventor 林海李超杰李杰李晓辉
Owner CHANGAN UNIV
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