The Experts below are selected from a list of 45 Experts worldwide ranked by ideXlab platform

He Xiao-jun - One of the best experts on this subject based on the ideXlab platform.

Nijmeijer H Henk - One of the best experts on this subject based on the ideXlab platform.

  • Implementation and validation of a three degrees of freedom Steering-system model in a full vehicle model
    Taylor and Francis Ltd., 2019
    Co-Authors: Loof J Jan, Besselink, Ijm Igo, Nijmeijer H Henk
    Abstract:

    \u3cp\u3eThis paper describes the coupling between a three degrees of freedom Steering-system model and a multi-body truck model. The Steering-system model includes the king-pin geometry to provide the correct feedback torque from the road to the Steering-system. The Steering-system model is combined with a validated tractor semi-trailer model. An instrumented tractor semi-trailer has been tested on a proving ground and the Steering-wheel torque, pitman-arm angle, king-pin angles and drag-link force have been measured during steady-state cornering, a step Steer Input and a sinusoidal Steering Input. It is shown that the Steering-system model is able to accurately predict the Steering-wheel torque for all tests and the vehicle model is accurate for vehicle motions up to a frequency where the lateral acceleration gain is minimum. Even though the vehicle response is not accurate above this frequency, the Steering-wheel torque is still represented accurately.\u3c/p\u3

Nijmeijer H. - One of the best experts on this subject based on the ideXlab platform.

  • Implementation and validation of a three degrees of freedom Steering-system model in a full vehicle model
    2019
    Co-Authors: Loof J., Besselink I.j.m., Nijmeijer H.
    Abstract:

    This paper describes the coupling between a three degrees of freedom Steering-system model and a multi-body truck model. The Steering-system model includes the king-pin geometry to provide the correct feedback torque from the road to the Steering-system. The Steering-system model is combined with a validated tractor semi-trailer model. An instrumented tractor semi-trailer has been tested on a proving ground and the Steering-wheel torque, pitman-arm angle, king-pin angles and drag-link force have been measured during steady-state cornering, a step Steer Input and a sinusoidal Steering Input. It is shown that the Steering-system model is able to accurately predict the Steering-wheel torque for all tests and the vehicle model is accurate for vehicle motions up to a frequency where the lateral acceleration gain is minimum. Even though the vehicle response is not accurate above this frequency, the Steering-wheel torque is still represented accurately

James Robertson - One of the best experts on this subject based on the ideXlab platform.

  • Active control of narrow tilting vehicle dynamics
    2014
    Co-Authors: James Robertson
    Abstract:

    Narrow tilting vehicles offer an opportunity to tackle both traffic congestion and carbon emissions having a small footprint, low weight and small frontal area. Their narrow width requires that they tilt into corners in order to maintain stability; this may be achieved by means of an automated tilt control system. A three-wheeled tilting vehicle prototype, known as the Compact Low Emission Vehicle for uRban transport (CLEVER), was constructed at the University of Bath in 2006. The vehicle was equipped with a direct tilt control system in which a pair of hydraulic actuators applied a moment between the cabin and a non-tilting base. This tilt control system provided satisfactory steady state performance but limited transient stability. High tilt rate demands associated with rapid Steering Inputs would lead to large tilting moments being applied to the non-tilting rear engine module; this, combined with the engine module’s own propensity to roll out of the bend, could cause the inside wheel to lift and the vehicle to capsize. This thesis details the implementation of a Steering Direct Tilt Control (SDTC) system, whereby the front wheel Steer angle is used to generate some of the tilting moment, on the prototype CLEVER Vehicle. Simulation and experimental results are presented which show a 40% reduction in load transfer across the rear axle during a transient ramp Steer manoeuvre. The influence of the SDTC system, and associated Steer angle alteration, on the vehicle trajectory is considered. A human driver is found to be capable of adapting their Steer Inputs such that they can follow their chosen path. Finally, a feed-forward control strategy is shown to reduce the load transfer across the rear axle by an additional 30% in transient situations, but only if the Steer Input signal is sufficiently free of noise.

Chai Shan - One of the best experts on this subject based on the ideXlab platform.

  • Simulation Analysis of Vehicle Handling Stability Based on ADAMS
    Agricultural Equipment & Vehicle Engineering, 2008
    Co-Authors: Chai Shan
    Abstract:

    Using dynamics simulative software ADAMS,the handling stability performance of vehicle is analyzed in this paper.Multi-body dynamics model of a vehicle is established using ADAMS / Car Module.Then the handling stability performances such as step Steer Input performance,ISO lane change performance and so on at different speeds are simulated.According to the simulation result,the handling stability of the vehicle is evaluated objectively.The results show that vehicle handling stability can be analyzed and evaluated well using ADAMS software.