Nolinear PID Control Research for Flexible Structure

Since there exist many certainties in the model of flexible structure,traditional PID control arithmetic can not meet control requirement.In order to suppress vibration of flexible structure,a nonlinear PID controller to make up the deficiency of traditional PID arithmetic is used and the stability is analyzed by Lyapunov theory.In addition,RBF neural network is introduced in controller to tune up the parameter of nonlinear PID,so the control system has particularly good transition process.The validity of this scheme is validated by simulation at last.