Invention Grant
- Patent Title: Method and device for real time estimation of the applied pressure and of noisiness in a brake element, in particular a brake pad
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Application No.: US16180556Application Date: 2018-11-05
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Publication No.: US11519474B2Publication Date: 2022-12-06
- Inventor: Fabrizio Merlo , Luca Martinotto , Daniele Donzelli , Mattia Solari
- Applicant: ITT Italia S.r.l.
- Applicant Address: IT Lainate
- Assignee: ITT Italia S.r.l.
- Current Assignee: ITT Italia S.r.l.
- Current Assignee Address: IT Lainate
- Agency: Barclay Damon LLP
- Priority: ITTO2013A000307 20130417
- Main IPC: F16D66/00
- IPC: F16D66/00 ; F16D65/00 ; F16D66/02 ; F16D69/00 ; F16D65/08 ; F16D65/092 ; G01L1/16 ; G01L5/28 ; B60T17/22 ; G01L5/22

Abstract:
A brake element is sensorized by at least one piezoceramic sensor arranged between a metallic support element and a block of friction material of a brake element, the sensor being completely embedded within the block. An electrical voltage signal generated by at least one piezoceramic sensor, without the need for a power supply, is picked up by an electrical circuit integrated into the metallic support element. The electrical voltage signal is processed in the form of equal length of samples per unit of time of the detected signal by successively processing in real time each sample of equal length of time sample of the signal by applying an algorithm. The algorithm is selected from at least one of a sequence of integrations of voltage values in the sample carried out in an interval of time in the order of milliseconds; FFT voltage data sample; and integral of the voltage data sample.
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