2009 Volume 17 Issue 6 Pages 69-76
Parameter design by simulation was performed in the development of an active suspension system for an automobile, A two-step design was performed, in which the vehicle characteristics were improved to achieve robustness (improvement in the S/N ratio) in the first step, and the control parameters were tuned to improve control performance (improvement in sensitivity) in the second step. Takng the fact that multiple components are applied in various combinations into consideration, external excitation was assigned to an orthogonal L8 array as an indicative factor, not as a signal factor. The parameter design was performed using a simple vehicle model in the excitation experiment mode, and validity of the design was verified in a more realistic driving simulation. It was confirmed by simulation that the optimally designed active suspension system has excellent vibration control performance and control stability. It can be said that this optimal design method is effective in stabilizing and improving control performance.
