초록 ▼

An apparatus and method for controlling a solenoid valve wherein the flow rate of the valve relative to a specific percent duty cycle may be varied. The controller is such that after the desired flow of the solenoid valve is determined, the frequency and percent duty cycle of an output signal contro

An apparatus and method for controlling a solenoid valve wherein the flow rate of the valve relative to a specific percent duty cycle may be varied. The controller is such that after the desired flow of the solenoid valve is determined, the frequency and percent duty cycle of an output signal controlling the solenoid valve is varied. Such a controller utilizes varying frequencies to provide multiple slope flow rates with a single passage solenoid valve.

대표청구항 ▼

[ I claim:] [1.] A method of controlling a solenoid to obtain a desired flow rate including the steps of:receiving a signal representing the desired solenoid flow rate;generating an output signal, including a frequency component and a percent duty cycle component, based on the desired flow rate by v

[ I claim:] [1.] A method of controlling a solenoid to obtain a desired flow rate including the steps of:receiving a signal representing the desired solenoid flow rate;generating an output signal, including a frequency component and a percent duty cycle component, based on the desired flow rate by varying said frequency component with said percent duty cycle component; andusing said output signal to control operation of said solenoid.