PROCESS FOR THE CONTROL OF AN ELECTROPNEUMATIC, OR ACTUATOR, ACTUATOR, OR CYLINDER.

摘要

P A known method, applicable in particular to the clutching of motor vehicles, for controlling an electropneumatic cylinder whose working chamber can, by means of two solenoid valves, be placed in communication with either a vacuum source or a source of pressure has the disadvantage that rapid displacements require large valve sections with which slow displacements cannot be made sufficiently finely sensitive due to too short opening times. This is why, according to the invention, in the case where a slow displacement of the jack is required, the two solenoid valves are controlled with the same frequency but a variable pulse rate for each valve, thus allowing for minimum gas consumption under pressure to regulate the speed of maneuver practically at will. /P