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Control system and control method of fast mirror

A control system and reflector technology, applied in the control system, AC motor control, installation, etc., can solve problems such as inconsistency, inability to output equal sizes, high motor parameters, etc., achieve high stability, uniform force, and improve stability The effect of sexuality and environmental adaptability

Active Publication Date: 2017-02-22
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention solves the problem that when the motors are connected in series in the existing mirror control method, a relatively high driving power is required and there is inconsistency in machining and motor parameters, so that the two motors on the same axis cannot output forces of equal magnitude and opposite directions. limitations and other issues, a control method for fast mirrors is provided

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  • Control system and control method of fast mirror
  • Control system and control method of fast mirror
  • Control system and control method of fast mirror

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specific Embodiment approach 1

[0018] Specific implementation mode 1. Combination figure 1 Description of this embodiment, the control system of the fast mirror includes four voice coil motors, four motor power amplifiers, four current sensors, four position sensors, four current controllers, and two position controllers. There are four proportional amplifiers.

[0019] The armature currents of the four voice coil motors are respectively collected by four current sensors, and the currents collected by the four current sensors are used as current feedback values. The calculation results of the four current controllers are respectively given to the four motor power amplifiers, and the four motor power amplifiers respectively drive and control the four voice coil motors to form four current closed-loop control systems, which control the four voice coil motors respectively. Current, and then achieve the purpose of controlling the output force of the voice coil motor.

[0020] The four position sensors on the ...

specific Embodiment approach 2

[0024] Specific embodiment two, combine figure 1 In this embodiment, the control method of the fast mirror is mainly aimed at the fast mirror driven by two axes and four motors. The control method adopts double closed-loop control, and each deflection axis includes a position loop and two current loops, wherein the inner loop is The current loop, the outer loop is the position loop. Due to the orthogonal distribution of the two axes of the fast mirror, there is no coupling relationship in theory, so each deflection axis can be controlled independently.

[0025] The two current loops on the X axis are mainly composed of current controller 1, power amplifier 1, current sensor 1, voice coil motor 1, current controller 2, power amplifier 2, current sensor 2, voice coil motor 2 and proportional amplifier 1 and It consists of a proportional amplifier 2, and the outer ring is a position control loop, which is mainly composed of a position controller 1, a position sensor 1, a positio...

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Abstract

The control system and control method of a fast reflector relate to a control method of a fast reflector, which solves the problem that a high driving power is required when motors are connected in series in the existing reflector control method, and there is inconsistency in machining and motor parameters, resulting in Two motors on the same axis cannot output forces of equal size and opposite directions, which has limitations and other problems. The present invention is a fast mirror driven by two axes and four motors. The control method adopts double closed-loop control, and each deflection axis includes a position ring, two current rings, the inner ring is the current ring, and the outer ring is the position ring. Due to the orthogonal distribution of the two axes of the fast mirror, there is no coupling relationship in theory, so each deflection axis is controlled independently. The control system of the present invention can flexibly adjust the proportional coefficients of the input terminals of the two current controllers, and realize the synchronous movement of the two motors on the same axis, so that the mechanical system of the fast mirror is evenly stressed, and the stability of the work and the environmental adaptation are improved. sex.

Description

technical field [0001] The invention relates to the field of precision tracking and precision control, in particular to a control method for a fast mirror driven by a voice coil motor. Background technique [0002] As a beam control device, fast mirrors have the characteristics of high resonance frequency, fast response speed, and flexible control. They have been widely used in astronomical telescopes, laser communications, adaptive optics, and precision tracking control. [0003] At present, the driving components of fast mirrors mainly include piezoelectric ceramics and voice coil motors. The control method described in this patent is mainly aimed at fast mirrors driven by voice coil motors. Dual-axis fast mirrors often use four driving devices to achieve the deflection of two orthogonal axes, in which each axis controls the deflection of the mirror through the push-pull motion of two drivers. This driving method can improve the speed of the fast mirror. The response spe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B7/182H02P25/028
CPCG02B7/182H02P25/034
Inventor 王帅曹玉岩孟浩然
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI