Results 61 to 70 of about 10,781 (143)

Learning from Demonstration for Hydraulic Manipulators [PDF]

arXiv, 2018
This paper presents, for the first time, a method for learning in-contact tasks from a teleoperated demonstration with a hydraulic manipulator. Due to the use of extremely powerful hydraulic manipulator, a force-reflected bilateral teleoperation is the most reasonable method of giving a human demonstration.
arxiv  

Design, Fabrication and Control of an Hydraulic Elastomer Actuator [PDF]

arXiv, 2018
This paper presents design, fabrication and control of a compliant 2D manipulator, a so called soft actuator. Our focus is on fiber-reinforced elastomer actuators driven by a constant pressure hydraulic supply and modulated on/off valves. For a given diameters, we study the effect of four different elastomer materials and that of number of ...
arxiv  

Simulation of the Electro-hydraulic Control of Wet Clutch Actuator

Jixie chuandong, 2015
To the problems of strong nonlinear,time delay and lower control accuracy of wet clutch actuator,an automobile automatic transmission with wet clutch actuator is studied,according to the characteristics of the wet clutch and control strategy requirement ...
Zhang Zengliang
doaj  

Robust Sensor-Limited Control with Safe Input-Output Constraints for Hydraulic In-Wheel Motor Drive Mobility Systems [PDF]

arXiv
In-wheel drive (IWD) systems enhance the responsiveness, traction, and maintenance efficiency of vehicles by enabling each wheel to operate independently. This paper proposes a novel robust torque-observed valve-based control (RTOVC) framework to address velocity tracking in hydraulic IWDs that actuate heavy-duty wheeled mobile robots (HWMRs ...
arxiv  

Dynamic Input Mapping Inversion for Algebraic Loop-Free Control in Hydraulic Actuators [PDF]

arXiv
The application of nonlinear control schemes to electro-hydraulic actuators often requires several alterations in the design of the controllers during their implementation. This is to overcome the challenges that frequently arise from the inherent complexity of such control algorithms owning to model nonlinearities. Moreover, advanced control solutions
arxiv  

EMC design for the actuators of FAST reflector [PDF]

arXiv, 2018
The active reflector is one of the three main innovations of the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The deformation of such a huge spherically shaped reflector into different transient parabolic shapes is achieved by using 2225 hydraulic actuators which change the position of the 2225 nodes through the connected down tied ...
arxiv  

Estimation of the clutch pressure basing on reduced order model of the hydraulic actuator system

Advances in Mechanical Engineering
The precise control of corresponding clutch pressures is essential to the gearshift quality of vehicle transmissions. The electro-hydraulic clutch-actuator system is widely utilized by vehicle transmissions because of the character of fast response and ...
Hongchao Jian, Yanfei Ren, Hongtao Gu
doaj   +1 more source

IMPROVING STATIONARY TOOLS FOR HYDRAULIC UNIT DIAGNOSTICS [PDF]

Avtomobilʹnyj Transport (Harʹkov), 2015
An important problem of increasing the efficiency of building machinery due to timely determination of hudrounits technical state at mechanization centers is considered in the given article.
I. Pimonov
doaj  

Real-Time Structural Deflection Estimation in Hydraulically Actuated Systems Using 3D Flexible Multibody Simulation and DNNs [PDF]

arXiv
The precision, stability, and performance of lightweight high-strength steel structures in heavy machinery is affected by their highly nonlinear dynamics. This, in turn, makes control more difficult, simulation more computationally intensive, and achieving real-time autonomy, using standard approaches, impossible.
arxiv  

Autonomous Control of Redundant Hydraulic Manipulator Using Reinforcement Learning with Action Feedback [PDF]

arXiv
This article presents an entirely data-driven approach for autonomous control of redundant manipulators with hydraulic actuation. The approach only requires minimal system information, which is inherited from a simulation model. The non-linear hydraulic actuation dynamics are modeled using actuator networks from the data gathered during the manual ...
arxiv