A solenoid actuator and feedback spring balance fluid forces within a control spool valve to regulate pump displacement.
A cryocooler controller detects second-stage temperature rises to increase cooling capacity.
A control unit manages pneumatic suspension pressure by comparing chassis position targets with measured values to regulate compressor operation.
A pump controller enters emergency run mode when sensors fail, alternating pump usage to maintain fluid removal.
Actuator-controlled cylinder ring varies piston stroke to eliminate excess fuel circulation and remove heat exchangers from aircraft turbine engines.
A centrifugal apparatus detects rotational direction by comparing frequency data from forward and reverse rotations.
A fan detection circuit uses tachometer pulses to trigger a relay for immediate shutdown upon motor failure.