優化Robomaster循跡小車調PID使用cos餘弦函數

import matplotlib.pyplot as plt
import numpy as np

x = np.linspace(-np.pi,np.pi,1000)
y = np.cos(x)
yy=1+y/2

plt.plot(x,y, 'b', label='y=cos(x)')
plt.plot(x,yy, 'r', label='y=1+0.5*cos(x)')
plt.legend(loc='lower center')

plt.savefig('cos_fig.png')
plt.show()