了基于逻辑规则控制算法的水温控制系统。该系统根据设定温度与实测温度

形成的偏差及偏差变化率，按照一定的规则调节PWM脉冲的占空比大小，从而调节了加热设备的输出功率。实际测试表明，

系统超调量小，上升时间快，控制精度达到了0．1℃。-Control algorithm based on logical rules of temperature control system. The system according to the set temperature and measured temperature of the formation of the deviation and change in error, according to certain rules regulating the duty cycle of PWM pulse size, which regulates the power output of heating equipment. Practical test shows that the system is small overshoot, rising time, accuracy reaches 0.1 ℃.