Performance, Robustness, and Durability of an Automatic Brake System for Vehicle Adaptive Cruise Control -

Performance, Robustness, and Durability of an Automatic Brake System for Vehicle Adaptive Cruise Control

Adaptive Cruise Control (ACC) technology is presently emerging in the automotive market as a convenience function intended to reduce driver workload. It allows the host vehicle to maintain a set speed and distance from preceding vehicles by a forward object detection sensor. The forward object detection sensor is the focal point of the ACC control system, which determines and regulates vehicle acceleration and deceleration through a powertrain torque control system and an automatic brake control system. This paper presents a design of an automatic braking system that utilizes a microprocessorcontrolled brake hydraulic modulator. The alternatively qualified automatic braking means is reviewed first. The product level requirements of the performance, robustness, and durability for an automatic brake system are addressed. A brief overview of the presented system architecture is described. The control methodology of generating brake pressure via a hydraulic modulator to achieve the vehicle decel

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