| 摘要 |
PURPOSE: An apparatus for measuring noise of a vehicle brake is provided to obtain objective signal in measuring a noise, thereby easily and accurately analyzing the noise generation and testing for improvement. CONSTITUTION: An apparatus for measuring noise of a vehicle brake includes a tire(20) rotatably installed in a jig(12) by mounting a brake(50), CH/DY fly wheel(10) fixed in the jig to rotate the tire with the frictional force by being combined with a driving element(11), a sound level meter(30) fixed at regular length away from the tire for measuring a noise generated between a brake drum(21) and a brake pad(22), a FFT(Fast Fourier Transform) analyzing device(31) receiving the signal to the noise from the sound level meter for analyzing the signal, a hydraulic cylinder(41) combined with a brake pedal of the brake for generating pressure, and a controller driving the driving element at regular velocity and periodically pressing the brake pedal for generating pressure.
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