JP6405497B1 - 電気活性ポリマセンサ及び検知方法 - Google Patents
電気活性ポリマセンサ及び検知方法 Download PDFInfo
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Abstract
Description
少なくとも第1の周波数及び異なる第2の周波数で電気活性材料センサの電気特性の測定を行うこと、及び
測定から、センサでの温度及びセンサに加えられる外部圧力又は力を導き出すことを含む。
Claims (15)
- 電気活性材料センサと、
少なくとも第1の周波数及び該第1の周波数と異なる第2の周波数で前記電気活性材料センサのインピーダンス又はインピーダンス位相角を含む電気特性の測定を行う制御システムとを含み、
該制御システムは、前記測定から、前記電気活性材料センサでの温度及び前記電気活性材料センサに加えられる外部圧力又は力を導き出すように構成される、
システム。 - 前記電気活性材料センサは、アクチュエータ及びセンサの両方として機能するデバイスを含む、請求項1に記載のシステム。
- 前記第1の周波数は、反共振周波数のような、前記電気特性が最大値又は最小値を有する共振周波数である、請求項1又は2に記載のシステム。
- 前記第2の周波数は、前記電気特性が負荷に対して一定である周波数である、請求項1乃至3のうちのいずれか1項に記載のシステム。
- 前記制御システムは、駆動信号を適用するように構成され、前記第1及び第2の周波数の測定信号が前記駆動信号の上に重畳され、前記駆動信号は、前記第1及び第2の周波数より下の周波数を備えるDC駆動レベル又はAC駆動信号を含み、任意的に、前記測定信号は、それぞれ、前記駆動信号の振幅の最大で10%の振幅を有する、請求項1乃至4のうちのいずれか1項に記載のシステム。
- センサのアレイを含み、前記センサのうちの少なくとも一部は、異なる第1の周波数を有する、請求項1乃至5のうちのいずれか1項に記載のシステム。
- 前記コントローラは、前記導き出される温度に基づいて前記導き出される外部圧力又は力を変更するように構成される、請求項1乃至6のうちのいずれか1項に記載のシステム。
- 前記電気特性は、直列抵抗のようなインピーダンス値を含む、請求項1乃至7のうちのいずれか1項に記載のシステム。
- 前記電気活性材料は、リラクサ強誘電体を含む、請求項1乃至8のうちのいずれか1項に記載のシステム。
- 電気活性材料センサを使用する検知方法であって、
少なくとも第1の周波数及び異なる第2の周波数で前記電気活性材料センサのインピーダンス又はインピーダンス位相角を含む電気特性の測定を行うこと、及び
前記測定から、前記電気活性材料センサでの温度及び前記電気活性材料センサに加えられる外部圧力又は力を導き出すことを含む、
検知方法。 - 前記第1の周波数は、前記電気特性が最大値又は最小値を有する、反共振周波数のような、共振周波数であり、前記第2の周波数は、前記電気特性が適用される負荷に対して一定である周波数である、請求項10に記載の検知方法。
- 前記電気活性材料センサは、アクチュエータ及びセンサの両方として機能するデバイスを含み、当該検知方法は、駆動信号を適用すること、並びに前記第1及び第2の周波数の測定信号を重畳することを含み、前記駆動信号は、前記第1及び第2の周波数より下の周波数を備えるDC駆動レベル又はAC駆動信号を含む、請求項10又は11のうちのいずれか1項に記載の検知方法。
- 前記導き出される温度に基づいて前記導き出される外部圧力又は力を変更することを含む、請求項10乃至12のうちのいずれか1項に記載の検知方法。
- 前記第1及び第2の周波数を決定する較正操作を行うことを含み、該較正操作は、作動信号のない第1の周波数掃引を適用すること、及び作動信号を伴う第2の周波数掃引を適用することを含む、請求項10乃至13のうちのいずれか1項に記載の検知方法。
- 前記電気活性材料は、有機電気活性材料、ポリマ電気活性材料から成る、群から選択される、請求項1乃至14のうちのいずれか1項に記載のシステム又は検知方法。
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