Sensors & Transducers — Magnetic, Capacitive & Piezoelectric

How does FEM help in designing Hall effect current sensors?

FEM magnetostatic analysis computes the magnetic field generated by the current under measurement in and around the conductor and magnetic core. You optimize core geometry to maximize field linearity in the Hall element region, evaluate sensitivity, and assess external stray field influence — all before building any prototype.

What makes piezoelectric transducer simulation challenging?

Piezoelectric devices require coupled structural-electrical analysis — mechanical stress generates voltage (sensor mode), applied voltage creates strain (actuator mode). The constitutive equations couple elastic stiffness, piezoelectric coupling coefficients, and dielectric permittivity. FEM must solve structural and electrical fields simultaneously, with careful attention to resonance mode shapes.