Title :
Model of a chopper-driven magnetic actuator in an electrohydraulic system
Author_Institution :
Ansoft Corp., Pittsburgh, PA, USA
Abstract :
An electrohydraulic system is modeled using a version of the electric circuit analysis program SPICE. The input is a typical DC voltage source and the output is a hydraulic pressure and flow. Analogies between hydraulic circuits and electrical circuits are used, along with nonlinear tables obtained by electromagnetic finite element analysis of a magnetic actuator that operates a proportional hydraulic valve. The control circuit is a chopper that produces variable pulse widths. Computed results show waveforms of chopper currents, magnetic actuator force, diode current, and hydraulic pressure
Keywords :
SPICE; actuators; choppers (circuits); electrohydraulic control equipment; finite element analysis; magnetic devices; DC voltage source; SPICE; chopper currents waveforms; chopper-driven magnetic actuator; diode current; electric circuit analysis program; electrical circuits; electrohydraulic system; electromagnetic finite element analysis; hydraulic circuits; hydraulic flow; hydraulic pressure; magnetic actuator; magnetic actuator force; nonlinear tables; proportional hydraulic valve; variable pulse widths; Choppers; Circuit analysis; Electrohydraulics; Electromagnetic analysis; Electromagnetic forces; Finite element methods; Hydraulic actuators; Magnetic circuits; SPICE; Voltage;
Conference_Titel :
Electric Machines and Drives Conference, 2001. IEMDC 2001. IEEE International
Conference_Location :
Cambridge, MA
Print_ISBN :
0-7803-7091-0
DOI :
10.1109/IEMDC.2001.939333
