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Flywheel system rotation speed control method driven by direct current motor

A DC motor and speed control technology, applied in the direction of DC motor speed/torque control, control system, electrical components, etc., can solve the problems of discontinuous high-frequency chattering signal, difficult engineering implementation, and increased energy consumption

Active Publication Date: 2016-10-26
NAT UNIV OF DEFENSE TECH
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AI Technical Summary

Problems solved by technology

However, the sliding mode control law contains switching term functions. When the rotor motion enters the sliding mode dynamics, the controller will generate discontinuous high-frequency chattering signals, which not only brings difficulties in engineering implementation, but also increases the control requirements. energy consumption

Method used

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  • Flywheel system rotation speed control method driven by direct current motor
  • Flywheel system rotation speed control method driven by direct current motor
  • Flywheel system rotation speed control method driven by direct current motor

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Embodiment Construction

[0102] The accompanying drawings constituting a part of this application are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention.

[0103] The method provided by the present invention will be described in detail below in conjunction with specific examples.

[0104] A method for controlling the speed of a flywheel system driven by a DC motor, the specific steps of which are as follows:

[0105] Step 1: Set the target speed and measure the actual speed

[0106] The given target speed is Ω C =1rad, the actual speed at the initial moment is Ω=0rad.

[0107] Step 2: Calculate the amount of error

[0108] Calculate the direct error between the target speed and the actual speed: e=Ω C -Ω.

[0109] Step 3: Calculation of sliding mode variables

[0110] Compute the sliding mode variable...

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Abstract

The present invention provides a flywheel system rotation speed control method driven by a direct current motor. A given target rotation speed and a real rotation speed are used for calculating error amount, and then a sliding modal variable is calculated; the sliding modal variable is modulated by a low pass filter to obtain equivalent control signals which are taken as input, and a dual-layer self-adaptive algorithm is designed for performing control gain online regulation; and the sliding modal variable and the control gain are inputted into the designed supercoiling control algorithm to obtain the control voltage. Because the closed loop system controlled by the method provided by the invention can be stably regulated to a target rotation speed in a limited time so as to have good robustness and control precision. An effective means is provided for the engineering of the high-precision rotation speed control of a flywheel system.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to a method for controlling the rotational speed of a flywheel system driven by a DC motor. Background technique [0002] The flywheel system is a widely used active control system. Modern spacecraft have higher and higher requirements for the accuracy, life and reliability of the attitude control system, and a three-axis stabilization system composed of a flywheel system is usually used to meet its performance requirements. The flywheel system does not consume working fluid, but only consumes electric energy; it can generate more precise control torque, and the control accuracy is an order of magnitude higher than that of thrusters; it is suitable for absorbing the influence of periodic disturbances. Therefore, the spacecraft currently working in medium and high orbits for a long time are all three-axis stable spacecraft equipped with a flywheel system. [0003] The wor...

Claims

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Application Information

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IPC IPC(8): H02P7/00
CPCH02P7/00
Inventor 杨雅君廖瑛文援兰季海雨龚轲杰
Owner NAT UNIV OF DEFENSE TECH
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