| 摘要 |
<p>PROBLEM TO BE SOLVED: To stabilize a clearance generating between a friction material and a rotor in non-braking time by eliminating an influence caused by the drift of the output of a pressing sensor, and to surely exhibit a reduction effect of dragging and a suppression effect against the delay in responsiveness for braking. SOLUTION: A differentiating circuit for the output of a press sensor 8 and a circuit comparing a differential quatient with a set threshold, are provided for an electrically drive braking device, and the control of a clearance is executed with a position where the differentiation value of the output of the press sensor is smaller than a set threshold, as an origin. The change rate of the output of the press sensor is suddenly changed at a position where a clearance between each pad 5 and a disc rotor 4 is zero, and since the position is set up as the origin, the clearance is thereby stable, so that dragging and a delay in responsiveness for braking hardly occurs.</p> |
