关键词: 系统设计, 多体系统, 控制策略, 主动转向架

Abstract: To accomplish collaborative simulation/design based on complex products virtual prototype technology, a seamless integration solution including migration of control models and linear analysis on transient working points was proposed. Control models were added by explicit-equation modeling method, and integrated with dynamical modelof Multi-Body Systems（MBS）. They were managed and assembled into the whole machine model, and were solved simultaneously by MBS s single solver. When wrapped out, these internal-integrated models could form the open-loop co-simulation so as to avoid the algebraic loop. The output errors, caused by MBS s incoherent iterative steps, could be limited due to sufficient-small synchronous step-sizes. In order to obtain the linear model satisfying the controller design requirements, the linear analysis was adopted on transient working points, instead of quasi-static equilibrium point which was not sensitive to initial velocity. For the Model of Manchester benchmark railway passenger vehicle, a robust Linear-Quadratic-Gaussian(LQG) controller was designed and validated for vertical stability on straight tracks.

Key words: system design, multi-body system, control strategy, active bogie