According to uncertain characteristics of modern control system

a new robust control method based on guardian maps theory was proposed. In light of guardian maps theory

the constraints between the controller gain parameters and the closed loop system poles were set up by this algorithm. By the closed loop system poles assignment

the dynamic characteristics and the steady performances were to meet the expected performance requirements. The controller structure was fixed. As long as an initial gain parameter was given

the robust control of the system can be realized. Simulation results show that this algorithm can adaptively obtain the control gain parameters and meet the control requirements all along the entire domain for the second order system model with parameter. Meanwhlie

the Monte Carlo random experiment shows that the control gain parameters still satisfy the requirements of system control performance

so as to ensure the robustness of the control process under the random variation of system parameters.