The Boeing Company

Fernando C Teran

Gregory Harris Smith

Randall Wayne Watkins

B Wayne Pauley

Julio C Martinez

Romy Andrade Reyes

Romeo Andrade Reyes

James D Spear

Andrade Romeo Reyes

Wayne B Pauley

Randall W Watkins

Method and apparatus for controlling pressure in a pressure vessel. A plurality of valves between a pressure source and a pressure vessel can be selectively opened or turned off, singularly or in combinations, to control pressure in the pressure vessel. A maximum pressure threshold and a minimum pressure threshold can be established based on operating considerations of the pressure vessel. One or more of the valves can be turned on when the pressure in the pressure vessel reaches the minimum pressure threshold. One or more of the valves can be turned off when the pressure in the pressure vessel reaches the maximum pressure threshold.

Valve controller for pressure stabilization

A digital programmable driver for a solenoid valve comprises at least one valve driver circuit for opening and closing the valve and a controller capable of sending an output signal to the valve driver circuit. The valve driver circuit comprises a power switch for providing current to the valve in order to open the valve. The output signal sent by the controller directs the power switch of the valve driver circuit to provide current to the valve, thereby causing the valve to open. The controller receives a plurality of parameter values, and responsive to the plurality of parameter values, calculates a rise time, a pull-in duty cycle, a fall time, and a hold duty cycle so as to modify the output signal sent to the valve driver circuit. The plurality of parameter values comprises valve resistance, valve inductance, supply voltage, valve pull-in current, valve hold current, and valve pull-in time.

Digital programmable driver for solenoid valves and associated method

Growing community of inventors

Placentia, CA, United States of America

Fernando C Teran