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The principle, simulation, design, characteristics and application of touch mode capacitive pressure sensors for embedded monitoring of tire pressure are presented In touch mode operation, the diaphragm of the Capacitive pressure sensor is touching the substrate structure The advantages of this mode of operation are near linear output, large over-range pressure and robust structure that make it capable to withstand harsh industrial field environment When properly packaged, the device can be used to measure fluid flow, force, acceleration, and displacement, etc in automotive applications

A brake durability experimental method is proposed to simulate a brake durability vehicle road test. Brake judder and noise often occur in brake durability road testing. Brake judder is difficult to address because of its many potential causes, such as assembly run out, component stiffness, lining characteristics, thermal coning/hot spot/thermal instability and corrosion. There are currently several test procedures to predict brake thermal roughness and pad cleaning corrosion performance for preventing brake judder. Brake durability vehicle road testing is performed to check brake NVH and wear; examples include the Mojacar test in Spain and the Huangshan test in China. Brake energy intensity and road vibration are the significant factors that cause brake rotor thickness variation, which generates brake judder in public road testing.