| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a temperature controller which is hardly affected by a fluctuation of an environment or a load, and can control a temperature stably. <P>SOLUTION: The temperature controller comprises: a heat exchanger 6 for conducting heat exchange between a primary coolant and a secondary coolant; a motor-operated valve 11 for changing a flow rate of the primary coolant flowing into the heat exchanger 6; and a feedback loop for controlling an opening of the motor-operated valve 11, thereby controlling a temperature of the secondary coolant flowing out of the heat exchanger 6. The feedback loop contains: a feedback control computing element 22 for determining the opening of the motor-operated valve 11 based on an error between a target temperature and a temperature of the secondary coolant flowing out of the heat exchanger 6; and a feedback control gain setter 24 for setting a gain of the feedback control computing element 22 according to the opening of the motor-operated valve 11. <P>COPYRIGHT: (C)2009,JPO&INPIT |
