Title :
Influence of cylinder leakage on dynamic behavior of electrohydraulic servo system
Author_Institution :
Inst. of Inf., Coll. of Dunaujvaros, Dunaujvaros, Hungary
Abstract :
The obtaining of change of dynamic behavior for an electrohydraulic servo system due to leakage at cylinder piston seal is the main contribution of the paper. The servo system consist a double ended symmetrical, double-acting hydraulic cylinder with servo valve, a hydraulic power supply with pump, accumulator and relief valve. An advanced nonlinear more realistic mathematical model was created and step response analysis is used to examine the dynamic behavior of the electrohydraulic servo system when internal cylinder´s leakage resistance decreasing. Simulations are reported to show the dynamic behavior of the system to assessing the leakage effect.
Keywords :
electrohydraulic control equipment; leak detection; pistons; pumps; seals (stoppers); servomechanisms; valves; cylinder leakage; cylinder piston seal; double ended symmetrical cylinder; double-acting hydraulic cylinder; electrohydraulic servo system; hydraulic power supply; pump; relief valve; servo valve; step response analysis; Control systems; Displacement control; Electrohydraulics; Engine cylinders; Fluid dynamics; Nonlinear dynamical systems; Petroleum; Servomechanisms; Transducers; Valves;
Conference_Titel :
Intelligent Systems and Informatics, 2009. SISY '09. 7th International Symposium on
Conference_Location :
Subotica
Print_ISBN :
978-1-4244-5348-1
Electronic_ISBN :
978-1-4244-5349-8
DOI :
10.1109/SISY.2009.5291129
