Invention Grant
- Patent Title: Electromechanical system with predictive back-EMF protection
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Application No.: US14827265Application Date: 2015-08-14
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Publication No.: US10313787B2Publication Date: 2019-06-04
- Inventor: Lars Risbo , Anker Bjørn-Josefsen , Kim N. Madsen
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Agent Andrew Viger; Charles A. Brill; Frank D. Cimino
- Main IPC: H03G11/00
- IPC: H03G11/00 ; H04R3/00 ; H04R29/00

Abstract:
A predictive back-emf protection methodology for an electromechanical system, including a signal processor that processes a source signal to provide a modified source signal, a driver that converts the modified source signal to a drive signal, and an electromechanical transducer that generates, from the drive signal, a transducer response, and a back-emf signal coupled back to the driver output. A predictive back-emf generator (such as a routine in the signal processor) is characterized by a back-emf transfer function (linear parameterized model of the electromechanical transducer) for transforming an input signal into a transform back-emf representation of a back-emf signal predicted by the back-emf transfer function as a response of the electromechanical transducer to such input signal. The signal processor processes the source signal based on the transform back-emf representation to generate the modified source signal input to the driver. An example application is limiting peaking current in an audio system.
Public/Granted literature
- US20160057533A1 ELECTROMECHANICAL SYSTEM WITH PREDICTIVE BACK-EMF PROTECTION Public/Granted day:2016-02-25
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