EXPERIMENTAL INVESTIGATION OF TWO STAGE G—M CRYOCOOLER SYSTEM CONTROLLED BY SOLENOID VALVES

A set of software and hardware system,which controls the intake and exhaust timing,is established using solenoid valves.The controlling system includes the pressure measuring system which measures the pressure of admission,exhaust,hot chamber and cold chamber of the G—M cryocooler, the displacernent measuring system which measures the piston displacement of the G—M cryocooler and valve controlling system.