1016 圧電素子を動力源とするディスクブレーキ

概要

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This paper deals with a brake device attached to each wheel of small cars as a component of brake-by-wire system. The brake device consists of a disk brake, a piezoelectric pump, two accumulators and a three position solenoid valve. Mathematical model of the brake device, an approximation formula of the caliper piston force (CPF), and a control scheme of the CPF are presented. Simulation results show that (1) the CPF large enough for small cars is generated by using a multilayerd piezoelectric element of 40mm diameter, (2) the rise time of the CPF is about 0.1 second including the time to contact the disk pad with the disk plate, (3) the formula gives close approximation to the simulated value of CPF, and (4) the feedback control of the CPF is achieved by using the disturbance observer.
社団法人日本機械学会の論文
2003-08-05