pid 是控制系统中的重要参数，指控制方式，指输出与输入之间的响应方式，英文字母比例积分微分。顾名思义，比例是输出与输入是按一个比例进行的，可调节快慢，通常是改变反馈。积分是输出是输入的积分，就是累加，当输入变化很大输出只按时间长短变化，起到滤波作用，也叫滞后，等效于在输入端并连一个电容。微分是输出只对输入变化部分敏感，特别是输入有尖峰的时候，输出剧烈的响应，但输入不变，不管有多大，输出就为零，因此，也叫超前调节，起加速作用，等效串联一个电容-pid control system is an important parameter refers to the control means, means between the output and input response mode, proportional integral derivative alphabet. As the name suggests, the ratio is output and input is carried out according to a scale, adjustable speed, typically changing feedback. Integral is the integral of the output is the input is cumulative, output only when the input varies greatly according to the length of time changes, play the filtering effect, also called lag, is equivalent to the input terminal and connect a capacitor. Is the output of the differential input change only some sensitive, especially when the input has a peak output response of intense, but the input unchanged, no matter how much the output is zero, therefore, also called advanced adjustment, from the acceleration, the equivalent in series with a capacitor