Research on Parameter Identification of Bouc-Wen Model of Magnetorheological Damper using Least Square Method

The Bouc Wen magnetorheological damper model has eight unknown parameters, and the mathematical expression of includes evolution quantity, absolute value term, exponential term differential equation, which complicates parameter identification. Researchers in related fields have made numerous attempts to solve problem that model's identification method is complex difficult implement. A combining nonlinear least square proposed identify parameters Bouc-Wen based on damping characteristics test. Analyze relationship between current use curve fitting toolbox fit functional relationship. At same time, Simulink create a simulation select sinusoidal signals with varying current, amplitude, frequency for comparison. validated using additional amplitude test data, results show high degree results. This can effectively dynamic parameters.