Feedforward control based on reference model disturbance observer of carrier-based optoelectronic theodolite

Yan, 张岩 Zhang; Shu-mei, 张淑梅 Zhang; Yan-feng, 乔彦峰 Qiao

doi:10.3788/ope.20132105.1213

Cited by 7 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Electro-optical systems have been widely used in naval vessels for detection and surveillance, aiming and fire control, precision guidance, navigation and guidance, range measurement, optical communication, and optoelectronic countermeasures [1], [2]. Optical axis stability is a necessary condition for high-precision tracking of shipborne electro-optical systems.…”

Section: Introductionmentioning

confidence: 99%

Digital Sliding Mode Control via a Novel Reaching Law and Application in Shipborne Electro-Optical Systems

et al. 2019

View full text Add to dashboard Cite

The alignment accuracy and stability of shipborne electro-optical system are affected by external attitude disturbance and internal non-linear disturbance. Therefore, this study examined a new digital sliding mode control based on a novel reaching law with an n-order disturbance compensator to solve this problem. Specially, the proposed novel reaching law was a chatter-free method, in which, as the switching gain was replaced by an adaptive function, chattering on the sliding surface tended to zero. For perturbed systems, the new sliding mode controller was able to guarantee a narrow quasi-sliding-mode domain and the ultimate width was the order of O(T 3 ), such that the narrower the quasi-sliding-mode domain width was, the more robust toward nonlinear disturbances. Both mathematical calculations and simulations verified the convergence and stability of the new controller. Finally, based on a compound control strategy that combined feedforward control with a sliding mode control position loop and proportional-integral velocity loop control structure, shipborne equivalent dynamic target tracking experiments were performed. The results, compared with existing controllers, showed that the robustness of the new controller to nonlinear disturbances was stronger and the tracking system accuracy clearly improved, while the influence of sliding mode chattering on the system was avoided.INDEX TERMS Shipborne electro-optical system, nonlinear disturbance, digital sliding mode control, chattering, reaching law, disturbance compensator, chattering-free, quasi-sliding-mode domain.

show abstract

Section: Introductionmentioning

confidence: 99%

Digital Sliding Mode Control via a Novel Reaching Law and Application in Shipborne Electro-Optical Systems

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Experimental results indicated that the error adaptive feedforward composite control algorithmcs accuracy was nearly 5 times better than that of the classical PID control algorithm and1time better than that of the adaptive feedforward algorithm. In [4][5][6][7][8], feedforward control methods are used to control the stability of the inertial stabilized platform tracking, carrier based optoelectronic devices, photovoltaic grid connected, servo system high speed positioning and pH control in food industry. In [9], the disturbance based on feedforward control in seeker stability platform to eliminate disturbed angular velocity form platform base.…”

Section: Introductionmentioning

confidence: 99%

A novel servo control method based on feedforward control – Fuzzy-grey predictive controller for stabilized and tracking platform system

Wang¹,

Zhao²,

He³

et al. 2016

J. vibroeng.

View full text Add to dashboard Cite

Through analysis of the time-delay characteristics of stabilized and tracking platform position tracking loop and of attitude disturbance exciting in stabilization and tracking platform systems, a compound control method based on adaptive fuzzy-grey prediction control (CAGPC) is proposed to improve the disturbance suppression performance and system response of stabilized and tracking platform system. Firstly, the feedforward controller which is to improve disturbance suppression performance of stabilized and tracking platform servo system and aiming at the external disturbances is introduced. Secondly, aiming at the disadvantages of conventional fixed step size of Fuzzy-grey prediction and the prediction error forecast model has, an adaptive adjustment module adjusting the prediction step and comprehensive error weight at the same time is proposed, according to the actual control system error and the prediction error, the Fuzzy-grey prediction step and the prediction error weights are regulated while to improve the control precision and the adaptability of the system prediction model; At last, Numerical simulation results and the stabilized and tracking platform experimental verification illustrate that the compound control method can improve the stable platform servo system response and the ability of suppress external disturbances and the CAGPC control method has better performance in the stabilized and tracking platform system.

show abstract

Opto-Electronic Platform Stabilized Anti-disturbance Tracking Controller Based on Reference Observer and Disturbance Observer

Fan

Wang

et al. 2018

2018 IEEE CSAA Guidance, Navigation and Control Conference (CGNCC)

View full text Add to dashboard Cite

Feedforward control based on reference model disturbance observer of carrier-based optoelectronic theodolite

Cited by 7 publications

References 0 publications

Digital Sliding Mode Control via a Novel Reaching Law and Application in Shipborne Electro-Optical Systems

Digital Sliding Mode Control via a Novel Reaching Law and Application in Shipborne Electro-Optical Systems

A novel servo control method based on feedforward control – Fuzzy-grey predictive controller for stabilized and tracking platform system

Opto-Electronic Platform Stabilized Anti-disturbance Tracking Controller Based on Reference Observer and Disturbance Observer

Contact Info

Product

Resources

About