Abstract
In the motorcycle industry, the safety of motorcycles operating at high speeds has received increasing attention. If a motorcycle is equipped with an anti-lock braking system (ABS), it can automatically adjust the size of the brake force to prevent the wheels from locking and achieve an optimal braking effect, ensuring operation stability. In an ABS, the brake force is controlled by an electro-hydraulic brake (EHB). The control valve inside the EHB was replaced with a proportional valve in this study, which differed from the general use of a solenoid valve. The purpose for this change was to precisely control the brake force and prevent hydraulic pressure oscillating in the piping. This study employed MATLAB/Simulink and block diagrams to establish a complete motorcycle ABS simulation model, including a proportional electro-hydraulic brake (PEHB), motorcycle motion, tire, and controller models. In an analysis of ABS simulation results, when traveling on different road surfaces, the PEHB could effectively reduce braking distance and solve the problem of hydraulic pressure oscillation during braking. The research demonstrated that this proportional pressure control valve can substitute the general solenoid valve in commercial braking systems. This can assist the ABS in achieving more precise slip control and improved motorcycle safety.
Highlights
The brake modules of modern motorcycles are generally equipped with an anti-lock braking system (ABS) to enable vehicles to stop within the shortest distance and motorcycle handles to be controlled to avoid obstacles and ensure driver safety
24presents presentsaacomparison comparisonof ofthe thebraking brakingdistances distancesfor forfour fourbraking brakingmodels, models,including includingthe the Figure 24 presents a comparison of the braking distances for four braking models, including the braking distances of a traditional of this study on dry and wet road surfaces, as braking distances of a traditional electro-hydraulic brake (EHB) and the proportional electro-hydraulic brake (PEHB) of this study on dry and wet road surfaces, as braking distances of a traditional
MATLAB/Simulink was used to establish the mathematical model of the PEHB actuator
Summary
The brake modules of modern motorcycles are generally equipped with an ABS to enable vehicles to stop within the shortest distance and motorcycle handles to be controlled to avoid obstacles and ensure driver safety. Tire adhesion refers to the acting force of the road surface on the tires and is known as tire friction, which is divided into longitudinal and lateral directions. Where S is the brake slip, Vv is the vehicle speed, and Vw is the wheel speed. The brake was locked if the slip was 1; the wheel speed was 0 with no maneuverability. Op served as the stable and zones, well as zones, the target for the longitudinal forcemaneuverability. Op served as the boundary for the stable and unstable zones, as well as the target forbraking the optimal optimal maneuverability.
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