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Direct acting capacitive transducer and method for producing same

A transducer, capacitive technology, applied in the field of direct-acting capacitive transducers and their manufacturing, can solve the problems of winding number limitation, long response time of the driver, etc., to reduce the noise level, reduce the manufacturing cost, and reduce the wear and tear Effect

Active Publication Date: 2014-04-09
DANFOSS AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, a high total resistance will result in a very long response time for this driver
Therefore, in order to obtain an acceptable response time, the number of windings must be limited, and therefore, the driving force must also be limited, that is, when designing the driver, the response time and the driving force must be traded off

Method used

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  • Direct acting capacitive transducer and method for producing same
  • Direct acting capacitive transducer and method for producing same
  • Direct acting capacitive transducer and method for producing same

Examples

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Embodiment Construction

[0145] Figure 1a and 1b shows a continuous roll of composite 1 of a reel according to an embodiment of the invention, and Figure 1c Perspective view of part of Complex 1. The scale of the composite is distorted to show the different elements of composite 1. The composite 1 comprises a film 2 made of a dielectric material having a surface 3 provided with a pattern of raised and recessed surface portions, whereby a designed corrugated profile of the surface 3 is formed. A conductive layer 4 has been applied to the surface 3, a conductive material being deposited such that the conductive layer is formed according to a pattern of raised and recessed surface portions. As far as everyday objects are concerned, film 2 is similar in some respects to household packaging films. It has a similar thickness and is relatively soft. However, it is more elastic than this membrane, with a pronounced mechanical anisotropy, as will be described below.

[0146] The dielectric material may ...

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Abstract

The invention provides a capacitive transducer comprising a set of electrodes arranged with a dielectric material there between. The electrodes and the dielectric material thereby form a capacitor. The capacitor is arranged in such a manner that electrical energy supplied to the electrodes can be at least partly converted directly into mechanical work for actuation by the transducer, i.e. without releasing stored energy. Thus, application of electrical energy moves the transducer directly as a consequence of the deformation of the dielectric material, and not as a consequence of release of potential energy stored in a pre-load mass, a spring, or in another kind of elastically deformable element. This is an advantage since it allows the transducer to be designed without having to apply a pre-strain to the transducer in a direction of actuation, and energy losses in the transducer are reduced.

Description

technical field [0001] The invention relates to a capacitive transducer capable of converting between electrical energy and mechanical energy and a method of manufacturing the same. More specifically, the invention relates to a capacitive transducer having a set of corrugated electrodes, the corrugations being obtained without applying a pre-strain to the material holding the electrodes. Advantageously, the capacitive transducer of the present invention may be formed by winding a mesh of dielectric material, preferably having electrical and mechanical properties similar to an elastomer, securing the set of electrodes. Background technique [0002] Electroactive polymers capable of performing a deflection in response to a voltage are a well known technology, as described in US6376971 for a compliant electrode placed in contact with the polymer in such a way that when a When the potential is different, the electric field generated between the electrodes causes the electrodes ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N1/00H10N30/50
CPCH01L41/0836H01L41/27H01L41/45H01L41/0986H10N30/506H10N30/206H10N30/05H10N30/098
Inventor 乔根·M·克劳森穆罕默德·Y·本斯里曼
Owner DANFOSS AS
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