Method for controlling swash plate compressor and swash plate compressor

A method for controlling a swash plate compressor, comprising:

• an air temperature measuring step for measuring a temperature of air flowed through an evaporator of an air-conditioner;
• a target stroke calculating step for calculating a target stroke based on a gap between the measured air temperature and an air temperature set value;
• a target ECV opening amount calculating step for calculating a target external control valve (ECV) opening amount based on the target stroke calculated in the target stroke calculating step;
• and
• an ECV opening amount adjusting step for adjusting an actual ECV opening amount to be a target ECV opening amount.

A method for controlling a swash plate compressor, comprising:

• a measuring step for measuring a revolutions per minute (RPM) of a swash plate compressor;
• a comparing step for comparing the RPM measured in the measuring step with a calculated RPM;
• and
• a protecting step for stopping a clutch and generating an error alarm or for reducing an inclination angle of a swash plate to a minimum and generating an error alarm if the measured RPM and the calculated RPM do not match in the comparing step, and wherein the generation of an error alarm is characterized in lighting a warning lamp, or generating a diagnostic code.

A method for controlling a swash plate compressor, comprising:

• a measuring step for measuring a compressor operation information of a swash plate compressor;
• a low refrigerant state determining step for determining whether the swash plate compressor is in a low refrigerant state or not;
• and
• an error alarm generating step for generating an error alarm if the swash plate compressor is in the low refrigerant state, wherein the generation of an error alarm is characterized in lighting a warning lamp, or generating a diagnostic code, wherein the measuring step measures the compressor operation information including a stroke, and wherein the low refrigerant state determining step is characterized in determining that the swash plate compressor is in the low refrigerant state if a gap between the current value of the stroke and a predetermined appropriate value of the stroke exceeds a first reference value.