Computed torque control and force analysis for mechanical leg with variable rotation axis powered by servo pneumatic muscle

B Wang, Y Wang, J Huang, Y Zeng, X Liu, K Zhou - ISA transactions, 2023 - Elsevier
It is difficult for a humanoid leg driven by two groups of antagonistic pneumatic muscles
(PMs) to achieve a flexible humanoid gait, and its inherent strong coupling nonlinear …

A compliant control method for robust trot motion of hydraulic actuated quadruped robot

T Chen, X Rong, Y Li, C Ding… - International Journal of …, 2018 - journals.sagepub.com
A motion control approach is proposed for hydraulic actuated quadruped robots, aiming to
achieve active compliance and robust motion control. The approach is designed with a …

Active control strategy of high-speed elevator horizontal vibration based on LMI optimization

S Cao, Q He, R Zhang, D Cong - Journal of Control Engineering and …, 2020 - ceai.srait.ro
In order to solve the problem of horizontal vibration of high-speed elevator caused by rail
roughness, in this paper, the active control strategy of horizontal vibration suppression of …

Gait analysis of quadruped robot using the equivalent mechanism concept based on metamorphosis

K Xu, P Zi, X Ding - Chinese Journal of Mechanical Engineering, 2019 - Springer
The previous research regarding the gait planning of quadruped robot focuses on the
sequence for lifting off and placing the feet, but neglects the influence of body height …

A robust and compliant framework for legged mobile manipulators using virtual model control and whole-body control

A Xie, T Chen, X Rong, G Zhang, Y Li, Y Fan - Robotics and Autonomous …, 2023 - Elsevier
Quadruped robots can mimic animal locomotion mode and have great potential usage in
unstructured environments. However, as mobile platforms, quadruped robots often lack …

Active compliance control on the hydraulic quadruped robot with passive compliant servo actuator

Z Hua, X Rong, Y Li, H Chai, S Zhang - IEEE Access, 2019 - ieeexplore.ieee.org
A hydraulic servo actuator with passive compliance (HPCA) is designed for hydraulic
actuated quadruped robots, aiming to solve the response discrepancy of the low-bandwidth …

Modeling and experimental evaluation of vibration reduction of hydraulic-driven joint with a MRF damper

X Meng, Z Zhang, K Sheng, C Yu… - Journal of Intelligent …, 2023 - journals.sagepub.com
In order to reduce the impact force of the legged hydraulic-robot when it is driving on the
ground, a new method based on magnetorheological technology is proposed for damping …

Contact Force/Motion Hybrid Control for a Hydraulic Legged Mobile Manipulator via a Force-Controlled Floating Base

S Liu, H Chai, R Song, Y Li, Y Li… - IEEE/ASME …, 2023 - ieeexplore.ieee.org
Hydraulic legged mobile manipulators are favored because they provide high power density
and a strong explosive force. Hydraulic mobile manipulators require contact force control to …

Design and verification passive compliance leg with micro pneumatic prop for legged robot

Z Hua, Z Zhang, Y Li, C Hui, X Li… - Proceedings of the …, 2023 - journals.sagepub.com
The passive compliance plays a crucial role in steady and secure locomotion of the legged
mammal. This paper aims to introduce the elastic element into the traditional high rigid leg …

Energy efficiency onboard hydraulic power for quadruped robot based on high-low double pumps supply

Z Hua, Z Zhang, H Chai, Y Li, X Li, Y Sun - Journal of Mechanical Science …, 2023 - Springer
This work presents a high energy efficiency onboard hydraulic system for quadruped robot.
Firstly, based on the rhythmic motion and mechanical characteristics of leg joints, the energy …