Simple model of the inertial sensor

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Simple model of the inertial sensor Relative
response to motion of frame
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Inductive Transducer
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A real inductive transducer (its a loudspeaker)
Housing
Coil Moves with mass
Speaker cone or Sensor mass
Magnet (fixed to housing)
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Inductive transducer Response to velocity
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The transducer coupled to the mechanical system
Mechanical
Transducer
Circuit
Kirchoffs Laws...
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Thevenin Theorem extends to the
electro-mechanical! The mechanical system and
transducer are equivalent to a voltage source VE
in series with ZE
Impedance due to mechanical system
Equivalent impedance
Actual electrical impedance
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Put in the rest of the circuit and
amplifier (includes noise)
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if noise 0, sensitivity is
Sensitivity curves
Calibration requires values of parameters
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