Nonlinear and Finite Pad Length Performance of Vehicle Air Cushion Suspensions.

摘要

Nonlinear and small perturbation linear models for the one-dimensional heave motion of a basic flexible-skirted air cushion suspension are formulated. A study of linear and nonlinear model characteristics under transient guideway and external force inputs is conducted to determine over what range of cushion configurations,operating conditions and input disturbance levels a linear model provides a good approximation to the nonlinear cushion model. The performance of a finite pad length suspension on a guideway containing random irregularities is determined. To illustrate the design information resulting from the transiet t performance and finite pad length study,the prototype designs of suspensions for intraurban and intercity vehicles are discussed.