Orthogonal six-DOFs vibration isolation with tunable high-static-low-dynamic stiffness: Experiment and analysis

RB Hao, ZQ Lu, H Ding, LQ Chen - International Journal of Mechanical …, 2022 - Elsevier
In order to suppress the low-frequency vibration of a high-precision instrument, an
orthogonal six-DOFs vibration isolation system with tunable high-static-low-dynamic stiffness …

Discrete-time predictive sliding mode control for a constrained parallel micropositioning piezostage

S Kang, H Wu, X Yang, Y Li, J Yao… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
This article proposes a new discrete-time predictive sliding mode control (DPSMC) for a
parallel micropositioning piezostage to improve the motion accuracy in the presence of …

Simultaneous micropositioning and microvibration control of a magnetostrictive Stewart platform with synthesized strategy

S Yi, Q Zhang, X Sun, B Yang, G Meng - Mechanical Systems and Signal …, 2023 - Elsevier
In this paper, we present a hybrid adaptive feedforward and feedback controller with
hysteresis compensator on a magnetostrictive-actuated multi degree of freedom (DOF) …

Novel coarse and fine stage parallel vibration isolation pointing platform for space optics payload

A Xu, Z Xu, H Zhang, S He, L Wang - Mechanical Systems and Signal …, 2024 - Elsevier
A coarse and fine parallel vibration isolation pointing platform (CFPP) is proposed, which
can realize a wide range of motion and active vibration isolation for space optical payload …

Sufficient active control of uncertain low-frequency space micro-vibrations near measurement limit of acceleration sensors

Q Jia, Q Li, L Liu - Aerospace Science and Technology, 2024 - Elsevier
High-precision payloads such as ultra-stable optical clocks for next-generation space
missions are greatly sensitive to the low-frequency micro-vibrations induced by various …

Dynamic modeling and analysis of a novel offshore gangway with 3UPU/UP-RRP series-parallel hybrid structure

A Niu, S Wang, Y Sun, J Qiu, W Qiu, H Chen - Ocean Engineering, 2022 - Elsevier
It is inevitable that the 6-DOF motions of ships at sea will be induced by the marine
environmental disturbances. Even though some ships are equipped with mooring or …

[HTML][HTML] Stewart platform motion control automation with industrial resources to perform cycloidal and oceanic wave trajectories

D Silva, J Garrido, E Riveiro - Machines, 2022 - mdpi.com
Research on motion control automation of Stewart Platforms with industrial configurations
(motion and controllers) is less present in the literature than other types of automation with …

Sliding mode disturbance observer and Q learning-based bilateral control for underwater teleoperation systems

T Wang, J Gao, O **e - Applied Soft Computing, 2022 - Elsevier
For underwater environments, it is difficult to acquire accurate contact force vectors between
the end effecter and the object by multidimensional force sensors. Precise force …

[HTML][HTML] A pneumatic conveyor robot for color detection and sorting

ML Dezaki, S Hatami, A Zolfagharian, M Bodaghi - Cognitive Robotics, 2022 - Elsevier
Despite numerous research works on conveyor robots, few works can be found on
electropneumatic conveyor belt robots with two separated lines. The unique feature of this …

Cascaded continuous sliding mode control for tracked mobile robot via nonlinear disturbance observer

H Wang, Y Zhang, X Wang, Y Feng - Computers & Electrical Engineering, 2022 - Elsevier
This paper addresses a robust continuous sliding mode control (CSMC) approach for the
tracked mobile robot (TMR). Considering the attractive properties of strong robustness and …