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WHEEL SLIP RESET CONTROLLER FOR BRAKING SYSTEMS
WO15101679
The invention relates to a slip reset controller for vehicle braking systems, which controller provides a signal (u) that is transmitted via the communication network to a local actuator that provides a signal (u), on the basis of a signal generated by a supervisor module and a signal generated by a slip estimation module, and wherein a slip estimation module generates a signal based on a signal provided by a sensory information module and a signal generated by a speed estimation module, on the basis of sensory measurements provided by a sensory information module. The invention also relates to a method for designing a slip reset controller for vehicle braking systems.
• The proposed proposal achieves, simultaneously and as far as possible, improvements in both braking speed and robustness against unforeseen conditions. <p> • The invention provides a resettable wheel slip controller that allows an improvement in the performance of the system: <br> a smaller and less oscillating transient, <br> robustness against time delays in the control action, against changes in road conditions, against uncertainties and against changes in the set point, even at values close to the maximum friction. <br> This improvement translates mainly into a reduction of the braking distance, and a more accurate estimation of the tyre-to-road friction coefficient. <p> • Improved simplicity and versatility, as the invention provides a method for the design of a resettable wheel slip controller and an estimator of the maximum friction that characterises each type or condition of road surface.