ADRC Method for Noncascaded Integral System Based on the Total Derivative of Composite Functions of Several Variables

Figure 3

The PID control effect on Chen chaotic system without disturbing from initial states , , and . In it, (a) the control effect of PID on variable of Chen chaotic system; (b) the control effect of PID on variable of Chen chaotic system; (c) and the control effect of PID on variable of Chen chaotic system.

(a)

(b)

(c)