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Method and arrangement for controlling an electro-acoustical transducer

一种转换器、控制器的技术，应用在通用控制系统、自适应控制、控制/调节系统等方向，能够解决降低转换器可靠保护及线性化、破坏转换器等问题，达到高敏感性与效率的效果

Active Publication Date: 2015-07-01
沃尔夫冈·克利佩尔
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, power amplifiers used in sound applications have high pass characteristics and attenuate this DC signal and other low frequency components which would destroy the converter when passing normal sound signals at higher frequencies
The attenuation of the DC signal caused by nonlinear control will cause discrepancies between the state variables in the control system and the real converter, which will reduce the reliable protection and linearization of the converter

Method used

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specific Embodiment

[0173]1. A device for converting an input signal (z(t)) into a mechanical or acoustic output signal (p(t)), comprising a converter (9), a controller (1), a detector (11 ) and a measuring device (13); the controller (1) receives the input signal (z(t)) and generates a control output signal (w(t)) supplied to the converter (9); the A measuring device (13) provides at least one sensing signal (i(t)), said sensing signal (i(t)) comprising a state variable of said converter (9), said detector (11) from Said measuring device (13) receives said at least one sensing signal (i(t)), wherein said detector (11) has a parameter output (15) which is based on said sensing signal (i(t) ) to generate a parameter vector (P[n]) which, when the instantaneous behavior of the control output signal (w(t)) provides continuous excitation of the converter (9), the parameter vector (P[n]) Describe the characteristics of the converter (9) at this moment (n); the detector (11) has a characteristic output...

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Abstract

An arrangement and method for converting an input signal z(t) into a mechanical or acoustical output signal p( t) by using a transducer (9) and additional means for generating a desired transfer behavior and for protecting said transducer against overload. Transducers of this kind are for example loudspeaker, headphones and other mechanical or acoustical actuators. The additional means comprise a controller (1), a power amplifier (7) and a detector (11). The detector identifies parameters P[n] of the transducer model if the stimulus provides sufficient excitation of the transducer. The detector permanently identifies time variant properties S*(t) of the transducer for any stimulus supplied to the transducer. The controller provided with this information generates a desired linear or nonlinear transfer behavior; in particular electric control linearizes, stabilizes and protects the transducer against electric, thermal and mechanical overload at high amplitudes of the input signal.

Description

technical field [0001] The present invention generally relates to an apparatus and method for converting an input signal z(t) into a mechanical or acoustic output signal p(t) by using a converter and for producing the desired conversion behavior and preventing said conversion other devices that overload the device. Transducers of this type are speakers, headphones, and other mechanical or acoustic actuators. Said other means recognize the transient behavior of the converter and generate the desired linear or non-linear conversion behavior through power control; in particular linearization, stabilization and protection against converter electrical, thermal and Mechanical overload. Background technique [0002] Electro-acoustic transducers have inherent nonlinear properties that create instabilities and signal distortions in the output signal p(t) that limit the usable operating range. US patents US 4,709,391 and US 5,438,625 disclose preprocessing of the input signal z(t) ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/00G05B13/04H04R3/02H04R3/08H04R29/00
CPCH04R3/007H04R3/08H04R3/02H04R29/001
Inventor 沃尔夫冈·克利佩尔
Owner 沃尔夫冈·克利佩尔
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