Performance simulation of dual-pipeline brake hydraulic system of heavy-duty vehicle

A dual-pipeline brake system controlled by electronic-hydraulic servo was developed for the heavy-duty vehicle.The steering brake and the emergent brake of the vehicle were realized by a dual-pipeline brake system in which an electronic-hydraulic servo controlled dual brake valve is used to control the dual-chamber brake cylinder.A nonlinear mathematical model was built for the brake system through analyzing the effects of the composing modules and linking pipelines of the brake system on the brake performance.The dual-pipeline steering brake performance of the system was simulated using the software MATLAB/Simulink and the result proved the rationality of dual brake scheme.The test-bed tests showed the performance of the developed brake hydraulic system meets the requirements of design.