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采用ADAMS软件对油罐车最大侧倾稳定角进行了仿真分析,结果显示,基于仿真模型的计算结果最接近真实状态,最后提出了油罐车理论计算经验修正值,为今后类似的设计提供了参考。 相似文献
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为解决特种车辆或载重车辆在极端工况下易侧翻的问题,提出了一种兼具馈能与主动抗侧倾功能的电控液压悬架系统。对该悬架系统的主动抗侧倾模式和馈能模式进行了功能原理设计与分析;针对主动抗侧倾模式与馈能模式,构建了电液悬架系统仿真模型;设计了电液悬架系统主动抗侧倾模糊PID控制策略和侧倾力矩分配方案,以及执行机构逻辑门限值控制策略,并基于Matlab/Simulink、TruckSim和AMESim仿真软件,搭建了电液悬架系统主动抗侧倾控制策略联合仿真平台;对装配有电液悬架系统的车辆模型在极限工况下的抗侧倾性能进行仿真分析,并对车辆在随机路面激励输入下的馈能特性进行仿真分析。结果表明,装配该电液悬架的特种车辆具备较强的防侧翻能力,并具有较好的悬架运动能量回收潜力。 相似文献
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汽车行驶的安全性不只取决于汽车自身的性能,还受驾驶员状况及道路状况的影响.文中在对汽车、驾驶员及道路进行分析研究的基础上,选择汽车、驾驶员和道路模型,建立了“驾驶员-汽车-道路”闭环模型,利用MATLAB语言开发了该闭环模型的仿真软件,并进行了汽车稳态转向特性校正试验、角阶跃输入试验及汽车穹道运行对比试验等仿真研究,进... 相似文献
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运用MATLAB软件的SimMechanics机械建模工具,建立了摩托车车身模型和骑乘者操作模型,同时也为摩托车运转模拟模型建立了1个在最优化方法中使用GA的模糊控制器,并应用该控制器进行模拟运行。 相似文献
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J.C. Wu T.S. Liu 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》1996,26(6):431-448
This study deals with dynamics and control of a rider-motorcycle system model in Hamiltonian form. The model is established to account for not only the motorcycle dynamics but also changes in rider's postures. Tyre forces are treated as external forces and rider's control actions contain three actuation torques. The Hamiltonian system is subject to dissipation effects due to tyre forces and rider's control torques. In addition to the total Hamiltonian, a generalized free energy is employed in formulation. Lyapunov's second method provides sufficient conditions for stability. Variable structure system (VSS) control is used to account for stabilization control exerted by the rider. Simulation results validate the proposed method. 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(4):429-456
The response of a motorcycle is heavily dependent on the rider’s control actions, and consequently a means of replicating the rider’s behaviour provides an important extension to motorcycle dynamics. The primary objective here is to develop effective path-following simulations and to understand how riders control motorcycles. Optimal control theory is applied to the tracking of roadway by a motorcycle, using a non-linear motorcycle model operating in free control by steering torque input. A path-following controller with road preview is designed by minimising tracking errors and control effort. Tight controls with high weightings on performance and loose controls with high weightings on control power are defined. Special attention is paid to the modelling of multipoint preview in local and global coordinate systems. The controller model is simulated over a standard single lane-change manoeuvre. It is argued that the local coordinates point of view is more representative of the way that a human rider operates and interprets information. The simulations suggest that for accurate path following, using optimal control, the problem must be solved by the local coordinates approach in order to achieve accurate results with short preview horizons. Furthermore, some weaknesses of the optimal control approach are highlighted here. 相似文献
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T. Katayama A. Aoki T. Nishimi 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》1988,17(4):211-229
The control behaviour of motorcycle riders is studied by means of a simulation model for the ridermotorcycle system, which stresses the control actions of the riders. The rider model describes the major steering torque control as well as the rider's own body control actions. This simulation model is applied to a single lane change maneuver and the results of this simulation are compared with the experiments in order to examine its validity. 相似文献
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随机不平路面上的ABS制动研究 总被引:1,自引:0,他引:1
在ADAMS中建立整车和各种等级随机不平路面的模型,在MATLAB/simu link中建立逻辑门限值ABS控制方法,利用联合仿真技术研究随机不平路面对ABS的影响,得到随机不平路面上ABS制动过程中轮胎纵向力、角速度和制动距离等重要参数的变化规律,为ABS在随机不平路面上的抗干扰措施提供依据。 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(9):1477-1496
This work presents a virtual rider for the guidance of a nonlinear motorcycle model. The target motion is defined in terms of roll angle and speed. The virtual rider inputs are the steering torque, the rear-wheel driving/braking torque and front-wheel braking torque. The virtual rider capability is assessed by guiding the nonlinear motorcycle model in demanding manoeuvres with roll angles of 50° and longitudinal accelerations up to 0.8 g. Considerations on the effective preview distance used by the virtual rider are included. 相似文献