Abstract:
This paper focuses on performance assessment of linear time-invariant controller subject to multi-disturbance dynamics.A new method of performance assessment for the system subject to multi-disturbance dynamics is proposed.A weighted performance index is introduced,which weights each disturbance to suggest the type and the preference to each of them.Also,the exact output variance lower limit of the structured closed-loop response for each disturbance can be obtained.Once the weights and variance limits are determined,the optimum value of the variance can be calculated.The optimum variance can be used as a benchmark to assess the control performance of the actual system.Simulation results show the validity of the proposed method.