Abstract
AbstractWith the development of fluid-power transmission and control technology, electro-hydraulic-driven technology can significantly improve the load-carrying capacity, stiffness, and control accuracy of stabilization platforms. However, compared with mechanically driven platforms, the stiffness and damping of the fluid, as well as the coupling effect between the fluid and the structure need to be considered for electro-hydraulic-driven parallel stabilization platforms, making the modal and dynamic response characteristics of the mechanism more complex. With the aim of solving the aforementioned issues, we research the electro-hydraulic driven 3-UPS/S parallel stabilization platform considering the hinge stiffness. Moreover, the characteristic vibration equation of the mechanism is established using the virtual work principle. Subsequently, the variation characteristics of the natural frequency and the vibration response according to the position of the mechanism are analyzed based on the dynamic equation. Finally, the correctness of the model is verified by a modal test and Runge-Kutta methods. This study provides a theoretical basis for the dynamic design of electrohydraulic-driven parallel mechanisms.
Funder
National key research and development program
General Fund of National Natural Science Foundation of China
Natural Science Foundation of Shanghai
Key Research Institute of Humanities and Social Sciences in Sichuan Province
Publisher
Springer Science and Business Media LLC
Reference35 articles.
1. Y C Wang, Y M Yang, H P Kuang. High performance both in low−speed tracking and large−angle swing scanning based on adaptive nonsingular fast terminal sliding mode control for a three−axis universal inertially stabilization platform. Sensors, 2020, 20(20): 16−18.
2. X Y Zhou, Y Jia, Y Li Y. An integral sliding mode controller based disturbances rejection compound scheme for inertially stabilization platform in aerial remote sensing. Proceedings of the Institution of Mechanical Engineers, 2018, 232(5): 26−27.
3. S Q Wang, X G Li, Z Q Mei, et al. Motion analysis and control system design of 3DOF WAVE simulatior. Journal of Mechanical & Electrical Engineering, 2020, 37(2): 201−205.
4. M Y Zhang, Y L Guan, W W Zhao. Adaptive super−twisting sliding mode control for stabilization platform of laser seeker based on extended state observer. Optik, 2019, 12(33): 199−201.
5. J M Hilkert. Inertially stabilization platform technology concepts and principles. IEEE Control Systems Magazine, 2008, 28(1): 26−46.