The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 02, 2000
Filed:
Mar. 30, 1998
Wolfgang J Klippel, D-01277 Dresden, DE;
Other;
Abstract
The invention relates to an arrangement for converting an electric input signal into an acoustic or a mechanical output signal comprising a transducer 19, a controller 15 and a parameter detector 17. The output 23 of the controller is connected via the parameter detector to the terminals of the transducer. The controller has a parameter vector input 24 to change the linear or nonlinear transfer characteristic of the controller between its control input 13 and control output 23. The parameter detector comprises an error circuit 31 and update circuit 33. The error circuit 31 measures an electric signal at the terminals of the transducer and generates an error signal e(t) which describes the difference between the measured electric signal and an estimated electric signal derived from the output signal or other state signals of the controller. The update circuit 33 estimates transducer parameters by minimizing the amplitude of the error signal. The estimated parameters are supplied both to the error circuit 31 and to the controller 15 to adjust the controller to the particular transducer and to compensate for distortion in the mechanical or acoustic output signal.