High-precision rotational speed control method for large inertia and low-speed loads

Abstract

The present invention provides a high-precision rotational speed control method for a large inertia and low-speed load, comprising the following steps: step 1, establishing a system model, describing the dynamic equation of the rotational speed control system according to the input and output of the motion control system and external disturbances, step 2, Analyze the performance of the control system. The performance analysis of the control system includes the analysis of the rotational speed measurement characteristic, the disturbance torque characteristic analysis, the characteristic analysis of the control system and the control method; Step 3, connect the hardware, the hardware includes the motor, the rotational speed measurement and the drive control method. The high-precision rotational speed control method of the large inertia and low-speed load of the present invention adopts long sampling period and low bandwidth control, the method is simple, the control is easy to realize, can adapt to the speed regulation control with a large inertia range and rotational speed range, and can be applied to ground and Servo control of large inertia and low speed in space in orbit.

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 and 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 applied 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 diameter φ600mm satellite tracking telescope developed by Goddord Space Flight Center in the United States, when the low speed is 0.0050° / s, the tracking accuracy is required to be 0.16" / s; when the Italian φ350mm telescope works at low speed at 0.000550° / s, the tracking accuracy is 0.24" / s s. When the servo system works at low speed, the phenomenon of low speed instability will occur. The so-called low spe...

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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