关键词: 热力模拟, 电阻加热, 断电触发采集, 温度测量, 温度控制

Abstract: A heating process with self-resistance was introduced in the rapid heating system for metal materials during the test of thermo-mechanical simulation. A formula was given first to estimate heating rate. To eliminate the errors of temperature measurement which was affected by an electromagnetic field induced from the high current, a special attention was paid to temperature measurement that they were done through an intermittent power-off procedure at intervals of 10 ms and utilizing synchronous voltages to collect testing data in triggering form. A criterion was proposed in case a measured point deviates from the power-off zone, with a triggering time reset. The application of intelligent control to rapid heating system is briefly described. The experiment results indicated that the rapid heating system is accurate in temperature measurement, and available to high-precision control.