A piezoelectric energy-harvesting caliper brake and braking energy-harvesting method thereof
A caliper brake, piezoelectric energy capture technology, applied in the direction of energy absorption brake, brake type, axial upward brake, etc., can solve the problems of energy not being used effectively, brake braking efficiency decline, etc., to eliminate thermal recession , the effect of reducing internal friction and heat, and improving safety
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Embodiment 1
[0032] When braking, apply the same excitation signal to the two vibrator 6 (such as access to the same sinusoidal excitation), the two brake blocks 7 produce a slight vibration of the same frequency and amplitude, and both sides of the brake disc body 2 are simultaneously affected by the same Braking force, no torsion. In this mode, only the high-frequency vibration of the brake pad 7 causes the pumping effect, and the frictional heat is lost during acceleration and braking, which improves the braking efficiency of the brake; the brake disc body does not twist, and the piezoelectric material 15 Deformation, no capture of regenerative braking energy.
Embodiment 2
[0034] When braking, apply two excitation signals with the same frequency and the same amplitude to the two vibrators, but there is a phase difference (such as two sinusoidal excitations with a phase difference of 90°), the time for the two brake blocks to reach the vibration displacement amplitude is different, resulting in the same The braking forces on both sides of the brake disc body 2 are different in magnitude at all times, and twist occurs. In this mode, the high-frequency vibration of the brake block 7 causes a pumping effect, and the frictional heat is lost during acceleration and braking, which improves the braking efficiency of the brake; at the same time, the brake disc body 2 is twisted due to the different braking forces on both sides. The deformation of the piezoelectric material 15 is caused, and the deformation of the piezoelectric material 15 will be converted into electric energy, and the braking energy will be captured and recovered.
Embodiment 3
[0036] When braking, the excitation signals of the same amplitude and different frequencies are applied to the two vibrators, the maximum vibration displacement of the two vibrators is the same, the maximum braking force on both sides of the brake disc body 2 is the same, but the timing of the braking force amplitude on both sides is different. In this mode, the high-frequency vibration of the brake block 7 causes a pumping effect, and the frictional heat is lost during acceleration and braking, which improves the braking performance of the brake; at the same time, the brake disc body 2 is twisted due to different braking forces, causing piezoelectric The material 15 is deformed, and the deformation of the piezoelectric material 15 will be converted into electric energy, and the braking energy will be captured and recovered.
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