Lecture

Resonant Sensors: Electromagnetic Oscillator Model

Description

This lecture covers the operation of vibrating wire strain gauges, including the use of pre-stretched wires and the application of Hooke's law for deformation measurement. It also delves into the electromagnetic oscillator model, mechanical compliance, and the equivalent electrical diagram of an electromagnetic oscillator. The concept of mechanical resonance and series resonance are explored, along with the excitation technique and electrodynamic detection. The lecture concludes with the discussion of magneto-acoustic resonators and their applications in response to mass and viscosity changes.

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