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This paper presents a design methodology for the development of self-powered active lateral secondary suspensions for rail vehicles. It first investigates the energy flow in the active lateral secondary suspensions and analyzes the conditions for self-powered control in detail. The impact of the controller design on both ride quality and energy consumption is then used to guide the design/specification...
Based on the analysis of the bus system dynamics, the five degrees of freedom bus system dynamics equation has been established, using vehicle speed and front wheel angle as input, and sideslip angle, yaw rate, the sprung mass roll angle, the sprung mass roll angular speed, lateral load transfer capacity front axle and rear lateral load transfer capacity as output. According to the linear control...
Lateral-load transfer rate is considered and seven freedoms of dynamic model of vehicles are established to simulate vehicle roll stability. This simulation model can be used to analyze vehicle dynamic characteristic and roll stability. The impact factors of roll stability are analyzed with different structure and property parameters in steering wheel angle step input with different speed such as...
The car ride is important to use performance affecting the performance of a wide variety of used vehicles. Suspension is an important part of the automobile, suspension ride on vehicles which have had a significant impact. With the rapid development of the automotive industry, how to improve vehicle ride, has become one of the designers are very concerned about the problem. In addition, dynamic analysis...
Within this paper, the modality of vehicle frame is analyzed by finite element software of ALGOR, and carrying out the first 10 steps natural frequency resonance and vibration model. Using mode of two-degree-of-freedom vehicle vibration builds system's movement differential equation and simulates the frame's vibration by Simulink module of Matlab. Then make a dynamic response simulation for vehicle...
Suspension modeling has great influence on the accuracy of whole vehicle simulation. In this paper, a new method is presented to build the suspension model based on its K&C characteristics. And a 14DOF vehicle model is developed to validate this method. The simulation results are compared with that got from commercial software CarSim, and have showed good agreement.
According to the comfortability of the test evaluation standard, used appropriate tools to identify parameters of the FTire tire model and PAC2002 tire model respectively with ADAMS/Car vehicle model, this paper gives the research on vehicle ride simulation results of pulse excitation by triangular bump road. A comparative analysis between two kinds of tire model and the experimental results is made,...
Some influence factors such as engine performance, structural characteristics and docking situation affect the operating performance and structural safety of vehicle. However, due to lacking of systematic workflow in current vehicle manufacturers, it's unsatisfactory for engine selection and docking. In this paper, a vehicle engine configuration procedure was systematically designed based on the integrative...
Based on a cab suspension system of a commercial vehicle, a multi-body dynamic model was built on ADAMS Software for the vibration modal analysis. An Experiment was taken for the verification of the model's accuracy. Through the energy decoupling theory, the cab suspension system was optimized. By analyzing the optimized parameters, the suspension's stiffness and position were determined, which gave...
Rollover is one of the main traffic accident forms for vehicle. According to the datas recently, rollover has become the second most serious accident. However, the study on rollover in China is at the beginning. The study on vehicle rollover is based on the theories of rollover. In order to optimize vehicle configuration,and enhance vehicle rollover stability,and ensure the road safety, rollover model...
A car handling simulation model was built by using multibody dynamics software ADAMS/CAR. In the model, we have considered the front and rear suspension system, steering system and the tires model in detail. Designed to test vehicle handling and stability of the serpentine line of tests and the testing process simulation and the data processing, the real vehicle data and simulation data are in good...
A car handling simulation model was built by using multibody dynamics software ADAMS/CAR. In the model, we have considered the front and rear suspension system, steering system and the tires model in detail. Designed to test vehicle handling and stability of the serpentine line of tests and the testing process simulation and the data processing, the real vehicle data and simulation data are in good...
Considering one type of commercial vehicle suspension system, a full multi-body model with twenty Degree of Freedom is established with MSC.ADAMS. After evaluating such parameters as stiffness and damping of the simulation model, the effects of outside exciting on the suspension system are analyzed based on the simulation results. The harmonic response of the mass center of the seat at model coordinate...
Modeling, simulation analysis of vertical and lateral dynamics of an electric vehicle driven by two rear hub-motors are presented. An eleven-DOF model of the electric vehicle and the road surface input model are all established. A PID controller is used to adjust yaw rate to the desired one when slip ratio of the driving wheels is less than peak slip ratio. Simulation is performed considering inputs...
Front suspension system's dynamics behaviors simulation model for a forest fire patrolling vehicle was built by using ADAMS/Car in order to evaluate handling stability of the vehicle. The wheel parameters of the vehicle which affect vehicle's handling performances were simulated and analyzed. The relationship between the wheel parameters, such as the camber angle, toe-in angle, kingpin inclination...
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