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To avoid the problem of rear overhang swing, the paper presents a steering method that continuous changes car's longitudinal steering center during steering process, which is the ideal pattern the vehicle converts from 4WS to FWS. Through analyzing trails of four wheels' center coordinates, it is found that the problem could be solved by varying longitudinal steering center along steering process...
For the problem of ideal steering ratio design of vehicle steer-by-wire system, the design method that based on constant yaw rate gain is researched in this paper. The vehicle model of steer-by-wire is built based on the co-simulation of CarSim and Matlab/Simulation. According to the design principle of the ideal steering ratios, the ideal steering ratios in different speed and different steering...
Electric power assisting characteristic has important impacts on handling stability of vehicle with EPS. This paper introduced that the vehicle model built by the ADAMS software and the EPS(Electric Power Steering) control system model built in MATLAB environment were used to put up the Co-simulation, analyzed the impacts of EPS control system on automobile steering performance.
In 2010, over 20.3 million vehicles were recalled. Software issues related to automotive controls such as to cruise control, anti-lock braking system, traction control and stability control, account for an increasingly large percentage of the overall vehicles recalled. We have developed AutoPlug, an automotive Electronic Controller Unit (ECU) test-bed to diagnose, test, validate and verify controls...
Through building dynamic model of car-trailer braking process, utilizing function fmincon () offering in the optimization toolbox of Matlab, the braking force distribution coefficient of car-trailer brake was optimized. The result shows that car-trailer can realize the optimum locking sequence that tractor front axle is locked firstly, then trailer axle is locked, finally tractor rear axle is locked;...
Vehicle stability control for the vehicle is investigated using electro-hydraulic brake (EHB) control in this paper. It describes a vehicle stability controller based on Electro-Hydraulic Braking (EHB) System which acts on the brake system to generate a corrective yaw moment that helps the vehicle to follow the course desired by the driver. A cosimulation system for EHB has been developed in this...
Searching for an ideal logic principle has been being the key for the research and development of vehicle anti-lock braking system (ABS). Basing on MATLAB/Simulink development environment, realizes the computer software simulation of vehicle dynamics model with ABS system, builds the definite state machine state flow model for the ABS electronic control unit, and further successfully architectures...
Active steering is a newly developed technology for passenger cars to enhance vehicle stability and handling performance. A fractional-order PIlambdaDmu control strategy is applied on active steering vehicle based on a multi-body vehicle dynamic model in this paper and the active control is expressed as a sum of PIlambda and PDmu control. The multi-body vehicle dynamic model using ADAMS can accurately...
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