Microelectromechanical and/or nanoelectromechanical structure with a variable quality factor
First Claim
Patent Images
1. A microelectromechanical and/or nanoelectromechanical structure comprising:
- at least one fixed part;
at least one suspended part suspended from the fixed part; and
an electromechanical damper that damps the displacement of the suspended part suspended from the fixed part, the electromechanical damper comprisingat least one DC power supply source, andat least n assemblies comprising an electrical resistor and comprising a variable capacitor or a subassembly of variable capacitors connected in parallel, the variable capacitor or the subassembly being connected in series with the electrical resistor, the electrical resistor being partly formed by the fixed part, the n assemblies being connected in parallel on the DC power supply source, so as to form n loops with a same power supply source or each assembly being connected to a DC power supply source, each variable capacitor being formed partly by the suspended part and partly by the fixed part such that displacement of the suspended part causes a variation of the capacitance of the respective variable capacitor.
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Abstract
Inertial sensor comprising a fixed part and at least one mass suspended from the fixed part and means of damping the displacement of the part suspended from the fixed part, said damping means being electromechanical damping means comprising at least one DC power supply source, one electrical resistor and one variable capacitor in series, said variable capacitor being formed partly by the suspended part and partly by the fixed part such that displacement of the suspended part causes a variation of the capacitance of the variable capacitor.
31 Citations
17 Claims
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1. A microelectromechanical and/or nanoelectromechanical structure comprising:
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at least one fixed part; at least one suspended part suspended from the fixed part; and an electromechanical damper that damps the displacement of the suspended part suspended from the fixed part, the electromechanical damper comprising at least one DC power supply source, and at least n assemblies comprising an electrical resistor and comprising a variable capacitor or a subassembly of variable capacitors connected in parallel, the variable capacitor or the subassembly being connected in series with the electrical resistor, the electrical resistor being partly formed by the fixed part, the n assemblies being connected in parallel on the DC power supply source, so as to form n loops with a same power supply source or each assembly being connected to a DC power supply source, each variable capacitor being formed partly by the suspended part and partly by the fixed part such that displacement of the suspended part causes a variation of the capacitance of the respective variable capacitor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A device comprising:
at least two inertial sensors integrated onto a single substrate, at least one of the two inertial sensors being an inertial sensor configured to detect displacements of a suspended part in a structure, the structure including at least one fixed part, the suspended part suspended from the fixed part, and an electromechanical damper that damps the displacement of the suspended part suspended from the fixed part, the electromechanical damper comprising at least one DC power supply source, and at least n assemblies comprising an electrical resistor and comprising a variable capacitor or a subassembly of variable capacitors connected in parallel, the variable capacitor or the subassembly being connected in series with the electrical resistor, the electrical resistor being partly formed by the fixed part, the n assemblies being connected in parallel on the DC power supply source, so as to form n loops with a same power supply source or each assembly being connected to a DC power supply source, each variable capacitor being formed partly by the suspended part and partly by the fixed part such that displacement of the suspended part causes a variation of the capacitance of the respective variable capacitor. - View Dependent Claims (14)
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15. A production process for making a structure or a device, the structure or device including
at least one fixed part, at least one suspended part suspended from the fixed part, and an electromechanical damper that damps the displacement of the suspended part suspended from the fixed part, the electromechanical damper comprising at least one DC power supply source, and at least n assemblies comprising an electrical resistor and comprising a variable capacitor or a subassembly of variable capacitors connected in parallel, the variable capacitor or the subassembly being connected in series with the electrical resistor, the electrical resistor being partly formed by the fixed part, the n assemblies being connected in parallel on the DC power supply source, so as to form n loops with a same power supply source or each assembly being connected to a DC power supply source. each variable capacitor being formed partly by the suspended part and partly by the fixed part such that displacement of the suspended part causes a variation of the capacitance of the respective variable capacitor, the production process comprising: -
making the electrical resistor of the electromechanical damper on or in a substrate that at least partly forms the fixed part; making the suspended part and the fixed part of the structure; and releasing at least the suspended part. - View Dependent Claims (16, 17)
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Specification