双极性pid 单极性就是输出只有整数没有负数，双极性有负数，比如一个温度控制系统，只有加热或者只有制冷，这就是单极性，又有加热也有制冷这就是双极性-Bipolar pid integer not only unipolar output is negative, bipolar have a negative, such as a temperature control system, only heating or only cooling, which is unipolar, there

温度控制系统，实现温度恒定，自动加热，制冷功能，单片机实现。-Temperature Control.

迷你车载温控系统的源代码，可以直接用PSoC Creator2.0打开使用，控制制冷片对温度进行调节。板子型号PSoC3-Mini-vehicle temperature control system source code, can be opened using the direct use PSoC Creator2.0, control coolers for temperature regulation. Board model PSoC3