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The purpose of this paper is to design and analyze an open-loop P/Q hydraulic proportional valve with integrated amplifier. Two major areas in this paper are summarized as follows: First, a CAD simulation program will be developed to design and analyze theconfiguration and dimension of the spool which meets the requirements of P/Qcontrol.Futhermore,a valve-controled cylinder will also be established to evaluate the performance of the designed valve. Second,an unipolar current amplifier will be designed such that it can bedirectly intergrated into the valve-body design.To do this,the dimension ofthe driver must be designed to be acceptable small. Finally,a prototype of an open-loop P/Q hydraulic proportional valve withintegrated amplifier will be develop. To test the performance of this
prototypeexperimentally,the test device developed in ITRI will be utilized.
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