High-precision rotating speed control method for large-inertia low-speed load

Abstract

The invention provides a high-precision rotating speed control method for a large-inertia low-speed load. The method comprises the following steps that 1, a system model is established, the kinetic equation of a rotating speed control system is described according to input and output of a motion control system and external disturbance, 2, the performance of the control system is analyzed, and performance analysis of the control system comprises rotating speed measurement characteristic analysis, disturbance torque characteristic analysis, control system characteristic analysis and a control mode; and 3, connecting hardware, wherein the hardware comprises a motor, a rotating speed measurement mode and a driving control mode. According to the high-precision rotating speed control method forthe large-inertia low-speed load, long-sampling-period and low-bandwidth control is adopted, the method is simple, control is easy to achieve, the method can adapt to speed regulation control over a large inertia range and a rotating speed range, and the method can be applied to on-orbit large-inertia low-speed rotating speed servo control over the ground and space.

Description

technical field [0001] The invention relates to the fields of motor drive control and the like, in particular to a high-precision rotational speed control method for large inertia low-speed loads. Background technique [0002] With the continuous development of aerospace and deep space exploration technology, the control accuracy of the servo control system used in space is getting higher and higher. Among them, the tracking control accuracy and speed stability of the speed are important indicators for the design of the space servo control system. For example, the φ600mm satellite tracking telescope developed by the Goddord Space Flight Center in the United States has a tracking accuracy requirement of 0.16" / s when the low speed is 0.0050° / s; the Italian φ350mm telescope operates at a low speed of 0.000550° / s, and the tracking accuracy requirement is 0.24" / s s. When the servo system works at low speed, there will be low-speed instability. The so-called low-speed instability...

AI Technical Summary

Problems solved by technology

However, this method is relatively complicated, and it is not suitable for high-precision speed control of large inertia and low-speed loads controlled by large-inertia low-speed speed servo control on the ground and in space.

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