Abstract
A new type of hydraulicpressure intensifier was previouslyproposed by the author, which operateson the principle that an oilhammer is generated continuously inthe pipeline by the on-off operationof a solenoid operated valve, locatedat the downstream end of the pipeline, and only the high pressure fluid isdischarged through a check valve. Inaddition, a method to utilize theintensifier for pressure control of ahydraulic cylinder by adjusting apulse to the solenoid operated valvewas already proposed.
In this paper, a pressure control system utilizing this intensifieris developed to generate a waveform according to a desired input.The empirical formula which relatesthe pulse width to the correspondingpressure increase is established inadvance and memorized in a computer.When the desired pressure is given tothe computer, it calculates the pulsewidth automatically through the empiricalformula and sends a pulse to asolenoid operated valve. Since thissystem is digitally controlled usinga micro computer, it has an advantagof having an option for a learningfunction.
