Multiple Fusion Based on the CCD and MEMS Accelerometer for the Low-Cost Multi-Loop Optoelectronic System Control

Luo, Yong; Mao, Yao; Ren, Wei; Huang, Yongmei; Deng, Chao; Zhou, Xi

doi:10.3390/s18072153

Cited by 10 publications

(3 citation statements)

References 23 publications

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“…Therefore, better disturbance suppression ability of the platform is conducive to improving the tracking accuracy of the system. At present, most electro-optical tracking platforms use multi-closed-loop control methods, especially three-closed-loop feedback control method, to improve the disturbance suppression ability of the system [7]. However, this method is not designed to suppress the disturbance.…”

Section: Introductionmentioning

confidence: 99%

The RSLQR Control Method Based on the Linear Extended State Observer in the Electro-Optical Tracking System

Liu,

Wang,

Qiu

et al. 2024

IEEE Photonics J.

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This paper presents a Robust Servo Linear Quadratic Regulator (RSLQR) method based on the Linear Extended State Observer (LESO), which solves the problem of optimal tracking control of electrooptical system under disturbance. For the problem that the accuracy of the electro-optical tracking system is reduced due to disturbance and modeling error, the LESO is adopted in this paper to obtain and compensate the influence of internal and external disturbances in the controlled object model, so as to improve the disturbance suppression ability of the electro-optical tracking system. Considering the influence of weighting matrix in the RSLQR method on system's dynamic response performance, this paper presents a selection criterion of weighting matrix in the RSLQR to meet the performance requirements of closed-loop system. Through simulation analysis and experimental verification, the design method proposed in this paper has great reference value for the optimization of the dynamic response performance of the electro-optical tracking system and the improvement of the disturbance suppression ability.

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Section: Introductionmentioning

confidence: 99%

The RSLQR Control Method Based on the Linear Extended State Observer in the Electro-Optical Tracking System

Liu,

Wang,

Qiu

et al. 2024

IEEE Photonics J.

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“…Thus, the LDLC systems can be used in different communication scenarios. 7,8 However, the positioning accuracy of the inertially stabilized laser beam in the LDLP system suffers from many serious disturbances, especially when the LDLC systems are installed on movable platforms. The disturbances introduced by movable platforms are mostly located at low and intermediate frequencies, which can significantly affect the stabilization of the tracking systems.…”

Section: Introductionmentioning

confidence: 99%

On disturbance rejection control for inertial stabilization of long-distance laser positioning with movable platform

Deng

Xue

Zhou

et al. 2020

Measurement and Control

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This paper focuses on the disturbance rejection control problem for inertial stabilization of long-distance laser positioning with the movable platform. Due to various disturbances of the movable platform, the positioning system has significant disturbances that affect the positioning accuracy. Moreover, the nonminimum-phase property of the inertial stabilization system leads to great challenges for designing traditional disturbance-observer-based as well as rejection control methods. In this paper, a dual-compensator disturbance-observer-based control algorithm is proposed to ensure a much stronger rejection of disturbances than those of conventional methods. In particular, it is proven that the two compensators in the proposed method effectively estimate disturbances in different frequency regions. Furthermore, the analytical tuning laws for the proposed dual-compensator disturbance-observer-based control method are presented. The experimental setup including the laser positioning platform demonstrated the validity of the proposed method, which effectively rejected various disturbances.

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“…In 2016, Tian proposed a multi-loop feedback control method (MFC) with the MEMS accelerometer, MEMS gyroscope and CCD, which successfully improved the disturbance suppression performance [17]. The overall disturbance suppression ability is the product of each single loop, hence the disturbance suppression ability of MFC is naturally better than that of DFC [18]. Moreover, the research about the disturbance suppression of the TCS is based on MFC for obtaining better performance.…”

Section: Introductionmentioning

confidence: 99%

A Modified Disturbance Observer Structure Based on Acceleration Measurement for Disturbance Suppression in Tracking Control System

et al. 2018

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The micro-electro-mechanical system (MEMS) accelerometer is widely adopted in many engineering control systems due to its extraordinary performance with high bandwidth, small size and low weight. However, massive drift caused by its insensitively at low frequency is the main factor which limits its performance. It leads to integral saturation when the feedforward method is used and hinders the improvement of disturbance suppression ability at low frequency, which is a significant factor for evaluating the closed-loop performance of a high-precision tracking system. To solve this problem, a modified disturbance observer structure and its corresponding new controller, which can improve disturbance suppression performance at low frequency by effectively rejecting more drift and weakening the occurrence possibility of integral saturation when drift exists, are proposed. Detailed analyses and a series of comparative experimental results verify that the proposed method can effectively enhance disturbance suppression performance at low frequency.

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Multiple Fusion Based on the CCD and MEMS Accelerometer for the Low-Cost Multi-Loop Optoelectronic System Control

Cited by 10 publications

References 23 publications

The RSLQR Control Method Based on the Linear Extended State Observer in the Electro-Optical Tracking System

The RSLQR Control Method Based on the Linear Extended State Observer in the Electro-Optical Tracking System

On disturbance rejection control for inertial stabilization of long-distance laser positioning with movable platform

A Modified Disturbance Observer Structure Based on Acceleration Measurement for Disturbance Suppression in Tracking Control System

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