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Wang Yong
Zeng Jing
National Traction Power Laboratory,
Southwest Jiaotong University,
Chengdu 610031, China
Cao Dengqing
Department of Applied
Mechanics,
Southwest Jiaotong University,
Chengdu 610031, China |
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ROBUST STABILITY ANALYSIS FOR
RAILWAY VEHICLE SYSTEMS*
Abstract: The lateral stability for railway vehicle dynamic system with uncertain parameters and nonlinear uncertain force vector is studied by using the Lyapunov stability theory. A robust stability condition for the considered system is derived, and the obtained stability bounds are not necessarily symmetric with respect to the origin in the parameter space. The lateral stability analysis for a railway bogie model is analyzed by using the proposed approach. The symmetric and asymmetric results are both given and the influence of the adjustable parameter b on the stability bounds is also discussed. With the help of the proposed method, the robust stability analysis can provide a reference for the design of the railway vehicle systems.
Key words:
Uncertain parameters Vehicle system model Robust stability |