초록 ▼

A process for automatically controlling a hydraulic servovalve with a hydraulic slide valve displaced by a rotary actuator. The process includes a first loop for automatically controlling the delivery as a function of the measurement of the angular position of the rotary actuator and a second automa

A process for automatically controlling a hydraulic servovalve with a hydraulic slide valve displaced by a rotary actuator. The process includes a first loop for automatically controlling the delivery as a function of the measurement of the angular position of the rotary actuator and a second automatic control loop with variable control as a function of the pressure measurement. The first automatic control loop is a proportional action loop whose increase is constant for the absolute values of the pressure deviation which are less than at least a threshold value and then varies in an increasing manner for absolute values of the pressure deviation which are greater than the same threshold.

대표청구항 ▼

[ We claim:] [1.] Servocontrol process for a servovalve comprising a slide provided with return means and moved by a rotary actuator, the servocontrol process comprising two nested loops, a first loop for servocontrolling the flow rate as a function of the measurement of the angular position of the

[ We claim:] [1.] Servocontrol process for a servovalve comprising a slide provided with return means and moved by a rotary actuator, the servocontrol process comprising two nested loops, a first loop for servocontrolling the flow rate as a function of the measurement of the angular position of the rotary actuator and a second servocontrol loop with variable control as a function of a measurement of a pressure, characterized in that the first servocontrol loop is a proportional action loop whose gain is a non-zero value throughout its entire range and is constant for values of the absolute value of a pressure deviation of the measured pressure from a desired pressure which are less than a first threshold value, and then varies in an increasing manner for the values of the absolute value of the pressure deviation which are greater than said first threshold.