Patent ID: 6848892

Claim:
An oscillation-type compressor comprising: a block and a piston; a motor including a stator and a mover; a movable element including said mover and said piston; a stationary element including said block and said stator; an elastic element having a portion fixed to said movable element and another portion fixed to said stationary element; a cylinder accommodating said piston so as to allow said piston reciprocating in an axial direction; a displacement detector connected to said piston in the axial direction for detecting a position near a top dead center of said piston; top dead center position detecting means for obtaining said top dead center position of said piston based on a signal obtained from said displacement detector; current/voltage detecting means for detecting a current or voltage value of said motor; and power supply means for changing the voltage applied to said motor based on output signals of said top dead center position detecting means and said current/voltage detecting means.