A High Precision Compound Control Scheme Based on Non-singular Terminal Sliding Mode and Extended State Observer for an Aerial Inertially Stabilized Platform

Zhou, Xiangyang; Shi, Yufeng; Yu, Ruifang; Zhao, Libo

doi:10.1007/s12555-019-0250-y

Cited by 21 publications

(8 citation statements)

References 15 publications

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“…The reflector stability mode is an optoelectronic stability solution that is commonly applied to specific types of equipment [11,12]. This method involves placing a reflector in the LOS of a fixed optoelectronic detector and achieving inertial stability of the LOS by adjusting the reflector's attitude.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of the Composite Stability Control of the Reflective Optoelectronic Platform

Huang

Hong

et al. 2023

Applied Sciences

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To improve image object detection and tracking, researchers have been exploring methods to enhance the stability and precision of optoelectronic platforms’ line of sight (LOS). The innovation of stability mechanisms is the key driver of this breakthrough. This study presents a composite stability control system for reflective optoelectronic platforms using the integral composite stability principle. A platform kinematic model was established based on multi-body kinematic theory, and a composite stable control strategy was designed. The strategy includes coarse stability design and fine stability design based on residual error feed-forward correction. The performance of the control strategy was analyzed in terms of dynamics, current loop control effects, and loop structure. The proposed control strategy was simulated and experimentally verified for fixed-frequency angular velocity disturbance and translational disturbance. The stability accuracy index of the system was significantly improved after compensation, with improvement of more than 75 times for fixed-frequency angular velocity disturbance and more than 37% for translational disturbance. Comparative experimental results with traditional stable methods show that the proposed composite stable control strategy can significantly improve the system stability, with stability accuracy index improvement of one to two orders of magnitude in micro-radian units compared to traditional algorithms.

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Section: Introductionmentioning

confidence: 99%

Design and Analysis of the Composite Stability Control of the Reflective Optoelectronic Platform

Huang

Hong

et al. 2023

Applied Sciences

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“…In the study in [6], a new adaptive controller versus an H∞ control was proposed on a magnetic levitation. In [7,8], an extended state observer (ESO) was adopted to estimate the disturbances, and the disturbances were compensated in real time to achieve a high precision compound control. Jia [9] designed a neural network backstepping sliding mode controller to estimate the nonlinear friction between the frames and three-axis vehicle inertial stabilization platform system, which is helpful for the real-time estimation and compensation on the nonlinear friction.…”

Section: Introductionmentioning

confidence: 99%

Resonance Suppression of a Maglev Inertially Stabilized Platform Based on an Improved Recursive Least Square Algorithm

2022

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Mechanical resonance occurs during the operation of a maglev inertially stabilized platform (MISP). The MISP is driven by the motor gear and the gear clearance changes during commutation, which makes the resonance frequency variable. Conventional notch filters with constant parameters are not ideal for variable frequency resonance suppression. In this study, the forgetting factor in the recursive least squares (RLS) algorithm was improved to estimate the resonance frequency online. By adjusting the frequency parameters of the notch filter, the proposed measures can effectively suppress the variable frequency resonance in a dual-stage MISP system. Finally, a simulation example is presented to validate the arguments in this study.

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“…To effectively prevent the flight platform from the non-ideal attitude motion, the inertially stabilized platform (ISP) is installed between the flight and the imaging sensors, and the LOS of the imaging sensors needs to maintain inertial steady to obtain highresolution imaging. [4][5][6][7] When angular motion, line vibration, or other perturbations occur on the flight platform, the ISP can adjust the attitude of the imaging sensors based on the attitude information provided by the position and orientation system (POS) and keep the LOS relatively stable in inertial space.…”

Section: Introductionmentioning

confidence: 99%

Non-model friction disturbance compensation for an inertially stabilized platform based on type-2 fuzzy control with self-adjusting correction factor

Zhou

Wang

Gao

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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To decrease the effect of nonlinear friction disturbance on the control accuracy of the inertially stabilized platform (ISP) for aerial remote sensing applications, a non-model friction compensation method based on type-2 fuzzy control (T-2 FC) is proposed. To improve the controller’s adaptability, an online complex self-adjusting correction factor method is designed, in which both the fuzzy regulator and the improved integral time absolute error method are combined to adjust the weighting factor and the quantitative factor of the T-2 FC online, respectively. In this way, the nonlinear friction disturbance error is compensated in real-time to obtain high system control accuracy. The experimental results show that compared with traditional PID control and the single T-2 FC, the proposed T-2 FC with self-adjusting correction factor has better disturbance rejection capability to the nonlinear friction disturbance. The ISP has seen a tremendous improvement in both stability and control precision.

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A High Precision Compound Control Scheme Based on Non-singular Terminal Sliding Mode and Extended State Observer for an Aerial Inertially Stabilized Platform

Cited by 21 publications

References 15 publications

Design and Analysis of the Composite Stability Control of the Reflective Optoelectronic Platform

Design and Analysis of the Composite Stability Control of the Reflective Optoelectronic Platform

Resonance Suppression of a Maglev Inertially Stabilized Platform Based on an Improved Recursive Least Square Algorithm

Non-model friction disturbance compensation for an inertially stabilized platform based on type-2 fuzzy control with self-adjusting correction factor

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