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11.
利用实验方法研究了旅客对车体振动特性的影响,建立了旅客-车体耦合振动分析模型,针对旅客人数及旅客分布对车体振动的影响,进行了仿真分析。 相似文献
12.
Adaptive Control of 4WS System by Using Neural Network 总被引:3,自引:0,他引:3
T. Shiotsuka A. Nagamatsu K. Yoshida 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》1993,22(5):411-424
An adaptive control system of the model following type is proposed for drive motion control of a four wheel steering (4WS) car with using neural network (NN) which has mastered nonlinear friction force between tire and road surface. A model of one rigid body is adopted which represents appropriately two kinds of car motion caused by steering action, namely the lateral displacement and the yawing rotation, and an equation of motion is described in a simplified form to make a system equation for motion control possible. Nonlinear relation between the cornering force of tire and the slip angle is obtained by numerical analysis with the tire model proposed by E. Fiala, taking friction coefficient and car speed as the parameters. The result is used as the teaching signal for NN. Three NN are used in the control system composed of both the feed-forward and the feedback circuits in order to realize adaptive control. Validity and usefulness of the proposed adaptive control system with NN are verified by three kinds of computer simulation. 相似文献