| 摘要 |
PURPOSE: A temperature control method for an oil cooler using the linearization of the cooling capacity is provided to cool oil without additional devices by varying spin frequencies according to a temperature deviation. CONSTITUTION: A temperature control method for an oil cooler using the linearization of the cooling capacity comprises following steps. The target temperature of oil is set(S301). The real temperature of the oil is measured by a temperature sensor(S302). The temperature deviation between the target temperature and the real temperature is calculated(S303). The temperature deviation is compared to the set temperature(S304). If the temperature deviation is above a set value, the linearization information on cooling performance is used according to the spin frequencies of a PID program and compressor. The spin frequency of the compressor is varied on the basis of the temperature deviation(S305). The process of varying the spin frequency of the compressor is performed based on a predetermined mathematical equation. [Reference numerals] (AA) Start; (S301) Setting a target temperature; (S302) Detecting the actual temperature; (S303) Calculating a temperature deviation; (S304) Temperature deviation > 5 ?; (S305) Changing the spin frequency of the compressor according to the temperature deviation using PID and linearization; (S306) Exceeding a normal compressor spin frequency?; (S307) Temporarily stopping the compressor; (S308) Operating the compressor; (S309) Spin frequency < 30Hz ?; (S310) Operating the compressor; (S311) Stopping the compressor |
