Abstract
Abstract
This study presents the development and validation of an analytical dynamic model of an air-over-hydraulic (AOH) brake system for a commercial vehicle (CV). The brake system model includes the controller, intensifier, brake lines, wheel cylinder, and foundational drum brake, which are presented for the interaction with the application system. A generalized AOH brake system, based on systems analysis level for the components, is formulated in detail. The pipeline hysteresis and fluid fluctuation of the brake system have been investigated in detail. Many experiments were performed on a bench setup of the AOH brake system and real vehicles. The experimental data is compared with the model simulation results. Preliminary results show that the simulation matches the experimental data closely. The models, which are developed from physical laws, are intended for use in the design and analysis of vehicle control systems for CVs.
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