Concept of a torque sensor for simplex drum brakes: Model based sensitivity analyses of an abutment force sensor concept for brake torque determination of simplex drum brakes

摘要

Several studies about the calculation of the brake factor exist, with differences in the degree of detail. One of the best knownfrom Kößler is enlarged in this paper to analyze beside the brake factor the force inside the drum in further detail. Based onthis analysis a relation between brake torque and abutment forces is presented, which leads to the idea of an abutment forcesensor, to determine the brake torque. To assess this relation a sensitivity analysis is carried out. The results show a lowsensitivity against the friction coefficient of the lining. The effects from all other, mainly geometric parameters are discussedto assess the potential of this innovative sensor.