Variable-speed tilt momentum wheel precession control method based on variable-parameter nutation damping

A momentum wheel and variable parameter technology, applied in non-electric variable control, attitude control, control/adjustment system, etc., can solve the problems of stability and control precision reduction, so as to improve stability, realize precise tracking and improve control precision Effect

Active Publication Date: 2018-05-04
HARBIN INST OF TECH
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Problems solved by technology

[0004] Aiming at the problem that the stability and control accuracy of variable-speed tilting momentum wheels are reduced due to rotor gyro effect and two-dimensional tilting motion coupling, the present invention proposes a precession control method of variable-speed tilting momentum wheels based on variable parameter nutation damping

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  • Variable-speed tilt momentum wheel precession control method based on variable-parameter nutation damping
  • Variable-speed tilt momentum wheel precession control method based on variable-parameter nutation damping
  • Variable-speed tilt momentum wheel precession control method based on variable-parameter nutation damping

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specific Embodiment approach

[0044] Specific implementation methods: such as Figures 1 to 5 by Figure 6a , Figure 6b As shown, this embodiment provides the implementation process of the variable speed tilting momentum wheel precession control method based on variable parameter nutation damping:

[0045] Step 1. Through the open-loop experiment of the tilting circuit, respectively identify the frequency characteristics of the direct-axis and quadrature-axis control objects of the variable-speed tilting momentum wheel at a certain speed;

[0046] (a) Let the variable-speed tilting momentum wheel run stably at a certain speed. Under the open-loop condition of the tilting control loop, apply m groups of sinusoidal voltages of different frequencies to the x-axis torquer of the variable-speed tilting momentum wheel, and apply zero voltage to the y-axis torquer, and measure The steady-state response of the output roll angle of the variable-speed roll momentum wheel on the x-axis (direct axis) and y-axis (ort...

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Abstract

The invention provides a variable-speed tilt momentum wheel precession control method based on variable-parameter nutation damping and relates to the field of motion control of a variable-speed tilt momentum wheel in order to solve the problem of reduction of stability and control precision of the variable-speed tilt momentum wheel due to rotor gyroscopic effect and two-dimensional tilt motion coupling. According to the method, frequency characteristics of direct-axis and quadrature-axis controlled members of the variable-speed tilt momentum wheel at a certain determined rotating speed are identified respectively through a tilt loop open-loop experiment; a relation between system nutation frequency and the rotating speed is determined according to the tilt loop open-loop experiment, and nutation instability of a nutation damper suppression system is designed. The frequency characteristics of the direct-axis and quadrature-axis controlled members of the variable-speed tilt momentum wheel are identified respectively through the tilt loop open-loop experiment, the nutation frequency is determined according to the quadrature-axis frequency characteristics at different rotating speeds,a variable-parameter nutation damper is designed accordingly, the nutation instability of the variable-speed tilt momentum wheel is suppressed, and a control structure of the system is provided on thebasis of the principle of precession control. Stability and control precision of the variable-speed tilt momentum wheel are improved.

Description

technical field [0001] The invention relates to the field of motion control of variable speed tilting momentum wheels, in particular to a precession control method of variable speed tilting momentum wheels based on variable parameter nutation damping. Background technique [0002] As a new type of device used in the attitude control system of tiny spacecraft, the variable-speed tilting momentum wheel draws on the idea of ​​variable-speed double-frame control moment gyroscope and dynamic tuning gyroscope, and uses a flat rotor that can tilt and change speed to realize three-axis attitude at the same time. Control torque output and two-axis attitude angular rate measurement function. The application of the variable speed tilting momentum wheel will greatly improve the integration and efficiency of the attitude control system, reduce the mass, volume, power consumption and development cost of the system, and is an important way to realize the attitude measurement and control te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D1/08
CPCB64G1/244G05D1/0825
Inventor 霍鑫刘海媛冯四兆赵辉
Owner HARBIN INST OF TECH
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