Patent ID: 6877326

Claim:
An operation control apparatus of a linear compressor, comprising: an ambient temperature sensor unit for sensing an outer ambient temperature of a refrigerator; a temperature sensing unit for sensing a temperature inside a refrigerator; a microcomputer for outputting a control signal according to a temperature state of the ambient temperature sensor unit and the temperature sensing unit; a load driving unit for receiving an ON/OFF control signal for driving a linear compressor from the microcomputer and outputting a drive signal to the linear compressor; a relay switched by the driving signal and supplying an AC power to a motor of the linear compressor; a power supply unit for converting the AC power into a DC power and supplying power to each unit inside the linear compressor; a current detecting unit for detecting a current applied to the linear compressor by increasing a stroke by a voltage applied to a motor; a voltage detecting unit for detecting a voltage generated at the linear compressor; a stroke calculating unit for detecting a stroke at a certain time point according to the current and the voltage, respectively, detected by the current detecting unit and the voltage detecting unit; a stroke voltage compensating unit for comparing the detected stroke at the certain time point and a reference stroke command value, compensating a generated error value, and outputting it; a second microcomputer for outputting a switching control signal according to an output of the stroke calculating unit and the stroke voltage compensating unit; an electric circuit unit for applying a voltage to the linear compressing unit by ON/OFF controlling an input AC power voltage through a triac according to the switching control signal of the second microcomputer; and a noise removing unit for removing a noise contained in the switching control signal generated from the second microcomputer in occurrence of an instantaneous power failure.