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Keywords: hydraulic actuators
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Journal Articles
Article Type: Research-Article
J. Dyn. Sys., Meas., Control. August 2020, 142(8): 081001.
Paper No: DS-19-1209
Published Online: March 18, 2020
...Ali Maddahi; Nariman Sepehri; Witold Kinsner Design of fault-tolerant controllers (FTC) for hydraulic actuators is one of the challenges in the area of fluid power systems. In real applications, it is not possible to model or measure some faults accurately. For example, an accurate model...
Journal Articles
Article Type: Research Papers
J. Dyn. Sys., Meas., Control. March 2012, 134(2): 021003.
Published Online: December 29, 2011
...Florian Kock; Cornelius Ferrari This paper presents the design and implementation of a nonlinear feedforward control algorithm for a hydraulic actuator driven by a multistage servo valve. Combined with a conventional feedback control algorithm, high frequencies can be achieved even for large-scale...
Journal Articles
Article Type: Technical Briefs
J. Dyn. Sys., Meas., Control. January 2012, 134(1): 014501.
Published Online: December 2, 2011
...-Hall Int., Hemel Hempstead. 5 Tran , H. D. , and DeBra , D. B. , 1994 , “ Design of a Fast Short-Stroke Hydraulic Actuator ,” CIRP Ann . 43 ( 1 ), pp. 469 – 472 . 10.1016/S0007-8506(07)62255-0 6 Habibi , S. , and Goldenberg , A. , 1999 , “ Design and Analysis...
Journal Articles
Article Type: Research Papers
J. Dyn. Sys., Meas., Control. November 2011, 133(6): 061005.
Published Online: September 29, 2011
... engineering hydraulic actuators perturbation techniques pistons pressure control pumps Variable-displacement, swash-plate type, axial-piston pumps are widely used in industrial and mobile applications for supplying power to hydraulic circuitry. In typical off-highway applications these pumps...
Journal Articles
Article Type: Research Papers
J. Dyn. Sys., Meas., Control. September 2011, 133(5): 051003.
Published Online: July 27, 2011
.... 26 10 2009 13 01 2011 27 07 2011 27 07 2011 brakes electric propulsion hydraulic actuators mechanical stability optimisation vehicle dynamics control allocation Modelica modeling electric vehicles force constraints global chassis control vehicle stability...
Journal Articles
Article Type: Research Papers
J. Dyn. Sys., Meas., Control. July 2011, 133(4): 041004.
Published Online: April 6, 2011
...Stan van der Meulen; Rokus van Iperen; Bram de Jager; Frans Veldpaus; Francis van der Sluis; Maarten Steinbuch A reduction in the fuel consumption of a passenger car with a pushbelt continuously variable transmission (CVT) can be established via optimization of the hydraulic actuation system...
Journal Articles
Article Type: Research Papers
J. Dyn. Sys., Meas., Control. January 2011, 133(1): 011003.
Published Online: November 23, 2010
... between efficient on and off states, allowing any hydraulic actuator to have virtually variable displacement. An existing barrier to switch-mode control is a fast and efficient high-speed valve. A novel high-speed valve concept is proposed that uses a phase shift between two tiers of continuously rotating...
Journal Articles
Article Type: Technical Briefs
J. Dyn. Sys., Meas., Control. September 2010, 132(5): 054505.
Published Online: August 19, 2010
... of the faulty hydraulic actuator is first established, in the frequency domain, by Fourier transformation of acceptable actuator input-output responses. Then, a robust position control law is synthesized by quantitative feedback theory to meet the prescribed design tolerances on closed-loop stability...
Journal Articles
Article Type: Research Papers
J. Dyn. Sys., Meas., Control. May 2009, 131(3): 031002.
Published Online: March 19, 2009
... of traditional design and the improved closed-loop control performance in implementation. 04 04 2005 31 12 2008 19 03 2009 closed loop systems electric actuators electrohydraulic control equipment feedback hydraulic actuators optimal control valves deadband describing function...
Journal Articles
Article Type: Technical Briefs
J. Dyn. Sys., Meas., Control. January 2008, 130(1): 014502.
Published Online: January 14, 2008
...Hairong Zeng; Nariman Sepehri This paper addresses the tracking control of hydraulic actuators commonly used in many hydraulically actuated robotic systems. Dynamic model of the entire actuator incorporating highly nonlinear hydraulic functions and the LuGre dynamic friction model is used to arrive...
Journal Articles
Article Type: Technical Papers
J. Dyn. Sys., Meas., Control. September 2007, 129(5): 729–741.
Published Online: January 25, 2007
...Mark Karpenko; Nariman Sepehri; John Anderson In this paper, reinforcement learning is applied to coordinate, in a decentralized fashion, the motions of a pair of hydraulic actuators whose task is to firmly hold and move an object along a specified trajectory under conventional position control...
Journal Articles
Article Type: Technical Papers
J. Dyn. Sys., Meas., Control. July 2007, 129(4): 435–445.
Published Online: October 17, 2006
... 10 2006 pneumatic actuators hydraulic actuators control system synthesis aerodynamics The modeling of a power and energy dense chemofluidic actuation system discussed herein is aimed at producing a model based on first principles. The model of the system should ideally be simple...
Journal Articles
Article Type: Technical Briefs
J. Dyn. Sys., Meas., Control. March 2007, 129(2): 229–235.
Published Online: May 24, 2006
... , Robot Analysis and Control , Wiley , New York . 26 08 2004 24 05 2006 parameter estimation condition monitoring preventive maintenance hydrostatics hydraulic actuators electrohydraulic control equipment hydrostatic electrohydraulic actuator Condition...
Journal Articles
Article Type: Technical Briefs
J. Dyn. Sys., Meas., Control. March 2006, 128(1): 176–185.
Published Online: November 19, 2005
...Kailash Krishnaswamy; Perry Y. Li Human operated, hydraulic actuated machines are widely used in many high-power applications. Improving productivity, safety and task quality (e.g., haptic feedback in a teleoperated scenario) has been the focus of past research. For robotic systems that interact...
Journal Articles
Article Type: Technical Papers
J. Dyn. Sys., Meas., Control. December 2006, 128(4): 778–787.
Published Online: September 22, 2005
... – 268 . Chinniah , Y. , 2004 , “ Fault Detection in the EHA using the EKF ,” Ph.D. thesis, University of Saskatchewan. 09 11 2004 22 09 2005 hydraulic actuators materials handling equipment electrohydraulic control equipment design engineering In this paper we...
Journal Articles
Article Type: Article
J. Dyn. Sys., Meas., Control. December 2004, 126(4): 764–771.
Published Online: March 11, 2005
... is determined solely by the location of the road wheel without considering the track tension. The second method 2 compares the calculated track path length with the desired value and adjusts the position of the idler by a hydraulic actuator. Both methods should be categorized as indirect active tensioners...
Journal Articles
Article Type: Technical Papers
J. Dyn. Sys., Meas., Control. June 2005, 127(2): 197–205.
Published Online: October 25, 2004
... design. This paper presents a discontinuous controller to regulate the transition mode in hydraulic actuators. The controller, upon sensing a nonzero force, positions the actuator at the location where the force was sensed, thus, exerting minimal force on a nonmoving environment. The scheme does...
Journal Articles
Article Type: Technical Papers
J. Dyn. Sys., Meas., Control. June 2005, 127(2): 206–217.
Published Online: June 8, 2004
... amounts to thousands of Newton which is very significant when compared to the nominal operational force (hundreds of Newton) required for most robotic tasks. One possibility of establishing the dynamic equivalency between the hydraulic actuation and the electrical actuation is to pursue output force...
Journal Articles
Article Type: Technical Briefs
J. Dyn. Sys., Meas., Control. June 2005, 127(2): 295–301.
Published Online: June 1, 2004
... vehicle suspension and ground/tire compliance, (iii) the friction between the tires and the ground, and (iv) the hydraulic actuators’ functions. The results demonstrate the effects of the manipulator movements, the flexibility of the contact between the base and the ground, the hydraulic compliance...
Journal Articles
Article Type: Technical Briefs
J. Dyn. Sys., Meas., Control. March 2004, 126(1): 224–229.
Published Online: April 12, 2004
... 2004 robust control hydraulic actuators digital control controllers harmonics low-pass filters signal generators sensitivity analysis electrohydraulic control equipment Repetitive control is effective in tracking or canceling periodic signals by applying high gain feedback...