This paper presents a line-of-sight (LOS) stabilization control method for portable optical systems by analyzing fast steering mirror, image sensor, and gyro sensor system. To compensate for LOS errors caused by hand tremors in portable optical systems, we present the configuration of an image sensor-based LOS stabilization control system and a control strategy considering the phase delay effect caused by low sampling frequency of the image sensor. The phase delay effect of the image sensor caused restricted bandwidth, which limited the stabilization performance. To overcome such limitations, we present disturbance feedforward control using the gyro sensor and controller design method considering characteristics of the gyro sensor. Through overall system modeling, we constructed a control simulation model. The LOS stabilization performance against hand tremor disturbances was analyzed based on the proposed controller design. Simulation results demonstrated that integrating a gyro sensor-based disturbance feedforward control with the image sensor-based LOS stabilization control significantly enhanced the stabilization performance.
Controlling an optical sensor’s line of sight (LOS) with an inertial stabilization system carried out on a dynamic platform is a challenging engineering task. The LOS needs to track a target object accurately despite intentional maneuvers, inadvertent motions, and additional disturbances. In this study, a super-twisting sliding mode controller (STSMC) is implemented to overcome this problem. The controller is designed based on the analysis of system dynamics. The stability is then proved to be satisfactory by the Lyapunov theory. Then, the control law is validated through experimental studies. In addition, a comparison to the performance of a linear controller is derived so that the effectiveness of the proposed controller is validated.
Citations
Citations to this article as recorded by
A New Optimal Control Design Framework and Stabilization of a Gimbal Payload System Using Meta-heuristic Algorithm Nafees Ahamad, Afzal Sikander, Pankaj Kumar Jha Wireless Personal Communications.2024; 135(2): 899. CrossRef
Unknown Input Observer-based Motion Control of Gyro-stabilized Surveillance System Dong-Hun Lee, Chang-Woo Kim, Jung-Suk Park, Young-Bok Kim Journal of Power System Engineering.2023; 27(4): 56. CrossRef
Motion Control Method of Bionic Robot Dog Based on Vision and Navigation Information Zhaolu Li, Ning Xu, Xiaoli Zhang, Xiafu Peng, Yumin Song Applied Sciences.2023; 13(6): 3664. CrossRef
The Design of a Dual Servo Drive and Control Integrated Platform Based on VNet Neural Network Zhang Huiling, Muhammad Arif Security and Communication Networks.2022; 2022: 1. CrossRef
Angular motion control design for a single ducted-fan UAV using robust adaptive pole-placement scheme in presence of bounded disturbances Minh-Thien Tran, Thinh Huynh, Soumayya Chakir, Dong-Hun Lee, Young-Bok Kim Journal of Mechanical Science and Technology.2022; 36(4): 2031. CrossRef
A Novel Adaptive Super-Twisting Sliding Mode Control Scheme with Time-Delay Estimation for a Single Ducted-Fan Unmanned Aerial Vehicle Minh-Thien Tran, Dong-Hun Lee, Soumayya Chakir, Young-Bok Kim Actuators.2021; 10(3): 54. CrossRef
A Nonlinear Backstepping Controller Design for High-Precision Tracking Applications with Input-Delay Gimbal Systems Hwan-Cheol Park, Soumayya Chakir, Young-Bok Kim, Thinh Huynh Journal of Marine Science and Engineering.2021; 9(5): 530. CrossRef
First
Prev
