Results 51 to 60 of about 10,781 (143)
Hybrid Position/Force Control for Hydraulic Actuators [PDF]
arXiv, 2020 In this paper a novel hybrid position/force control with autonomous switching between both control modes is introduced for hydraulic actuators. A hybrid position/force control structure with feed-forwarding, full-state feedback, including integral control error, pre-compensator of the deadzone, and low-pass filtering of the control value is designed ...
arxiv
Applied SciencesThis paper presents an experimental analysis of a high-response piezoelectric actuator system for the modular design of hydraulic digital fluid control units.
Marko Šimic, Niko Herakovič
doaj +1 more source
Design criterion to select adequate control algorithm for electro-hydraulic actuator applied to rocket engine flexible nozzle thrust vector control under specific load [PDF]
FME Transactions, 2013 The paper presents the challenge of finding the best criterion in selecting adequate control algorithm for electro-hydraulic actuator with a defined load.
Nauparac Dragan B. +4 more
doaj
Cooperative synchronization control of intelligent lifting systems with actuator failures
Advances in Mechanical Engineering, 2018 Synchronization of a large-scale lifting system with hydraulic actuator failures is investigated in this article. The lifting system is composed of multiple intelligent lifting subsystems with hydraulic actuators, wireless data transfer unit, and ...
Lijing Dong
doaj +1 more source
Energies, 2017 This paper addresses the energy-inefficiency problem of four-degrees-of-freedom (4-DOF) hydraulic manipulators through redundancy resolution in robotic closed-loop controlled applications.
Jarmo Nurmi, Jouni Mattila
doaj +1 more source
The dry history of liquid computers [PDF]
arXiv, 2018 A liquid can be used to represent signals, actuate mechanical computing devices and to modify signals via chemical reactions. We give a brief overview of liquid based computing devices developed over hundreds of years. These include hydraulic calculators, fluidic computers, micro-fluidic devices, droplets, liquid marbles and reaction-diffusion chemical
arxiv
Unified Manipulability and Compliance Analysis of Modular Soft-Rigid Hybrid Fingers [PDF]
arXivThis paper presents a unified framework to analyze the manipulability and compliance of modular soft-rigid hybrid robotic fingers. The approach applies to both hydraulic and pneumatic actuation systems. A Jacobian-based formulation maps actuator inputs to joint and task-space responses.
arxiv
Design of an Electro-Hydraulic System Using Neuro-Fuzzy Techniques [PDF]
In: Fusion of Neural Networks, Fuzzy Sets & Genetic Algorithms:
Industrial Applications, Chapter 4, CRC Press, Boca Raton, Florida, USA.,
1999, 2000 Increasing demands in performance and quality make drive systems fundamental parts in the progressive automation of industrial processes. Their conventional models become inappropriate and have limited scope if one requires a precise and fast performance.
arxiv
Modeling and Application of Series Elastic Actuators for Force Control Multi Legged Robots [PDF]
Journal of Computing, Volume 1, Issue 1, pp 26-33, December 2009, 2009 Series Elastic Actuators provide many benefits in force control of robots in unconstrained environments. These benefits include high force fidelity, extremely low impedance, low friction, and good force control bandwidth. Series Elastic Actuators employ a novel mechanical design architecture which goes against the common machine design principal of ...
arxiv
Design, modeling, and characteristics of ringshaped robot actuated by functional fluid [PDF]
The controlled actuation of hydraulic and pneumatic actuators has unveiled fresh and thrilling opportunities for designing mobile robots with adaptable structures. Previously reported rolling robots, which were powered by fluidic systems, often relied on complex principles, cumbersome pump and valve systems, and intricate control strategies, limiting ...
arxiv +1 more source