System Identification Research for Tank Stabilized Sight System Based on GA

Building model for Tank Sight Stabilized System by traditional mechanism method is difficult because of its complex internal structure. A method which combines classical step response method and the genetic algorithm to identify a certain type Tank Sight Stabilized System is proposed. It obtains the step response curve of Sight Stabilizing platform in certain conditions based on DSP system and Cubic spline method. It determines the order of the model based on priori knowledge and identifies the parameter of the model using GA. Finally,the effectiveness of the method is checked by using step response property label error evaluating method. The result shows that the method can be identified precisely with the identification model of Tank Sight Stabilized System.