利用模糊控制做巡航速度控制利用e, dot_e，當作兩個輸入，取交集在對輸出值u做砍頭的動作，再用重心法求解，再用Runge-Kutta做疊代更改增益值將會得到不一樣的結果。-Using fuzzy control to do cruise speed control using e, dot_e, as the two inputs, the output value of taking the intersection of the decapitation of the movement