Veoneer Nissin Brake Systems Japan Co., Ltd.

Juchirl Park

Long Ying

Alexandru Versin

Arnold H Spieker

Huan Fu

A braking control system of a vehicle includes a pressure control device that regulates brake fluid flow to a brake caliper of a wheel from a brake fluid cylinder. A pressure sensor measures a pressure of the brake fluid applied to the brake caliper. A filter module filters the measured pressure based on a rotational frequency of the wheel. The filtering produces a filtered pressure of the brake fluid applied to the brake caliper. A target pressure module sets a target pressure for the brake fluid for application to the brake caliper. A difference module determines a pressure difference between the filtered pressure and the target pressure. A pressure control module actuates the pressure control device based on the pressure difference.

Brake fluid pressure filtering and control systems and methods

A method is disclosed for validating operation of a secondary braking system (SBS) of a vehicle having a plurality of brakes, by controlling the SBS and a primary braking system (PBS) of the vehicle. The method may involve using the PBS to generate a first predetermined target braking pressure in the PBS for at least a first one of the brakes, while using the SBS to generate a second predetermined target braking pressure in the SBS for at least a second one of the brakes. Actual and anticipated performance characteristics of a braking component associated with the vehicle are then observed and compared, and from the comparison a determination is made whether the SBS is operating properly.

System and method for validating operation of secondary braking system of a vehicle

A method is disclosed for mitigating wheel hop of a motor vehicle. The method may involve detecting an oscillation of a wheel speed of a driven wheel of the motor vehicle of the motor vehicle. When oscillation of the wheel is detected, a low amplitude, high frequency ripple braking signal is applied to a brake caliper associated with the wheel to modulate a braking action acting on the wheel.

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Southfield, MI, United States of America

Juchirl Park