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This paper gives an extended analysis of automotive control systems as components of the integrated motion control (IMC). The cooperation of various chassis and powertrain systems is discussed from a viewpoint of improvement of vehicle performance in relation to longitudinal, lateral, and vertical motion dynamics. The classification of IMC systems is proposed. Particular attention is placed on the...
A driver should constantly keep an eye on vehicles closest to her/his location in order to avoid collisions. Unfortunately, the driver often does not see closest vehicles due to obstacles (other vehicles, trees, buildings, etc). In this paper, we introduce a novel type of query called a continuous range k-nearest neighbor (CRNN) query in vehicular ad-hoc networks, and propose a scheme for query processing...
Hydraulic power steering systems, which can provide large steering assist force, are widely used for heavy-duty commercial vehicles to enhance the driving comfort. Such systems have great influences on vehicle controllability, steering stability and safety. However, interpolated table from experiment data was used as the assist force to study the vehicle dynamics in many previous works, so the transient...
The value of the chassis gap has an important impact on driving safety and handling stability of vehicle. Focusing on the efficiency and accuracy of the detection equipment for testing chassis gap, the controlling performance influenced by chassis gap and a novel tester model is presented. The finite element analysis is adopted to ensure the reliability of the tester proposed the Coulomb criterion...
This paper proposes a Safety Spacing Policy (SSP) that can ensure safe operation while at the same time improving traffic flow for Adaptive Cruise Control (ACC) system. The proposed SSP, a nonlinear function of vehicle velocity, uses both the information of vehicle's state and braking capacity to adjust the position and velocity of the controlled vehicle. String stability, traffic flow stability and...
Vehicle safety is based on the avoidance of accidents (active safety) and reduction of injuries in case a crash isnpsilat preventable (passive safety). Therefore, the motion of the vehicle is measured with suitable sensors. The data analysis takes place in qualified vehicle control units. A vehicle stabilisation is calculated in the electronical-stability control unit (ESC). The restraint systems...
We study the safety control of multiple vehicles moving along a straight line. Each vehicle implements a linear feedback law on the positions and velocities of the adjacent vehicles. We assume the number of vehicles is large so by taking to the continuum limit the model is described by a hyperbolic partial differential equation, namely the wave equation. We analyze the stability of the system when...
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