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Vehicle dynamics is the study of vehicle motion, e.g., how a vehicle's forward movement changes in response to driver inputs, propulsion system outputs, ambient conditions, air/surface/water conditions, etc. Vehicle dynamics is a part of engineering primarily based on classical mechanics.
Directional stability is stability of a moving body or vehicle about an axis which is perpendicular to its direction of motion. Stability of a vehicle concerns itself with the tendency of a vehicle to return to its original direction in relation to the oncoming medium (water, air, road surface, etc.) when disturbed (rotated) away from that original direction.
Understeer and oversteer are vehicle dynamics terms used to describe the sensitivity of the vehicle to changes in steering angle associated with changes in lateral acceleration. This sensitivity is defined for a level road for a given steady state operating condition by the Society of Automotive Engineers (SAE) in document J670 [ 1 ] and by the ...
A track geometry car (also known as a track recording car) is an automated track inspection vehicle on a rail transport system used to test several parameters of the track geometry without obstructing normal railroad operations. Some of the parameters generally measured include position, curvature, alignment of the track, smoothness, and the ...
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If one of the vehicles brakes in unstable flow regime the flow will collapse. The primary tool for graphically displaying information in the study traffic flow is the fundamental diagram. Fundamental diagrams consist of three different graphs: flow-density, speed-flow, and speed-density. The graphs are two dimensional graphs.
Hans Pacejka (2012) Tire and Vehicle Dynamics, third edition (first edition 2002) Lugner, P., & Plöchl, M. (2005). Tyre model performance test: first experiences and results. Vehicle System Dynamics, 43(sup1), 48-62. Xu Wang (2020) Automotive Tire Noise and Vibrations: Analysis, Measurement and Simulation, ch.10
The Dynamic Steering Response system can adapt to varying environments that would require steering assistance. Sensors constantly monitor road conditions and vehicle speed then relay this information to the control unit. The control unit’s instruction to the electric motor will differ based on the current environmental situations the vehicle ...