In ascend phase, we could trace the given temperature with the PID control program and adopt to the changed practical environment by adjusting control parameters.

• 而后在温度上升阶段降低功率,采用PID数字控制程序跟踪给定的温度,并通过调整控制参数适应实际情况的变化,使温度调节较为稳定,结果较好。