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Rapid reflection mirror stabilization control method based on dual-disturbance observer

A stable control method and disturbance observer technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problems of low sampling rate, delay characteristic sensor data noise, insufficient disturbance suppression ability, etc., to achieve Improve the bandwidth and accuracy of disturbance observation, improve the ability to suppress medium and low frequency disturbances, and achieve the effect easily

Active Publication Date: 2017-11-21
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology

However, due to the low sampling rate, delay characteristics and sensor data noise of CCD, when the system is subjected to uncertain external disturbances, its disturbance suppression ability is still insufficient.

Method used

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  • Rapid reflection mirror stabilization control method based on dual-disturbance observer
  • Rapid reflection mirror stabilization control method based on dual-disturbance observer
  • Rapid reflection mirror stabilization control method based on dual-disturbance observer

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Embodiment Construction

[0026] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] as attached figure 1 Shown is a control block diagram of a fast mirror stabilization control method based on dual disturbance observers, which includes a gyro velocity closed loop, a CCD position closed loop, an acceleration disturbance observation compensation loop and a speed disturbance observation compensation loop. The core idea of ​​this method is to use the accelerometer and gyroscope to form a disturbance observation loop on the basis of the traditional double closed-loop control of speed and position, so as to directly perform double feed-forward compensation on the disturbance and further improve the disturbance suppression ability of the system. The specific implementation steps of adopting described device to realize feed-forward control method are as follows:

[0028] Step (1): Two kinds of inertial sensors,...

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Abstract

The invention relates to a rapid reflection mirror stabilization control method based on dual-disturbance observers; on the conventional speed and position dual-loop control basis, an accelerometer and a gyro can respectively used to form a disturbance observation circuit, thus directly carrying out disturbance dual-feedforward compensations; the obtained disturbance quantity refers to disturbances on a rapid reflection mirror, and has nothing to do with the disturbance transmission characteristics; an acceleration measurement based disturbance observer feedforward node is given by a speed controller, which means the direct disturbance acceleration feedforward is presently realized; in addition, a speed measurement based disturbance observer feedforward node is given by a position controller, which is equivalent to the speed feedforward. Viewed from the physics meaning angle, the accelerometer realizes the disturbance acceleration feedforward, the gyro realizes the disturbance speed feedforward, and dimension equity is realized, so the disturbance observers can accurately observe the disturbance speed and acceleration for direct compensations; the feedforward controller is simple to design, and easily realized in engineering.

Description

technical field [0001] The invention belongs to the field of photoelectric system tracking control, and in particular relates to a fast mirror stabilization control method based on double disturbance observers, which is used to enhance the disturbance suppression capability of the system and further improve the target tracking performance of the fast mirror motion platform. Background technique [0002] As the main unit of the precision tracking subsystem in the photoelectric tracking control system, the fast mirror is widely used in systems that require high-precision tracking and aiming, such as aerospace, optical communication, and large-aperture telescopes. On motion platforms, such as space-borne, airborne, ship-borne and vehicle-mounted systems, the motion of the external carrier will be directly transmitted to the mirror surface of the fast mirror, resulting in a reduction in the tracking and aiming accuracy of the system and destroying the overall performance of the s...

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Application Information

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IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 邓超毛耀任维刘琼李志俊
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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