Project - Actuator Calibration Fixture

Actuator Calibration Fixture


Yuka Miyake
Tony Poovey (formerly at UNC-Charlotte)

A common problem associated with controlling magnetic suspensions is the lack of an accurate model for the nonlinear relationship between the actuator force, coil current, and gap.  We use this calibration fixture to cycle the current to an actuator while capacitance probes and load cells measure the gap and force.  In this way, each actuator's behavior (including saturation and hysteresis) can be documented for use in later control system design.