VCA | PartQuest™ Explore

Motion Control with VCA - PWM Drive

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Member of the PartQuest Explore Development Team. Focused on modeling and simulation of analog, mixed-signal and multi-discipline systems covering a broad range of applications, including power electronics, controls and mechatronic systems.

Description

This example shows a voice coil actuator (VCA) driven motion control loop that is acting through an equivalent model of a flexible mechanical structure. This model is shown on the right side of the schematic. It was calibrated to match a physical structure, based purely on its frequency response data and using the HyperLynx complex-pole fitting technology. The original mechanical model can be seen here: https://www.systemvision.com/design/spring-mass-structural-model-and-fitted-equivalentThis version of the control system is useful when you are designing the physical implementation of the electronics (i.e. choosing properly sized Power MOSFETs, selecting an appropriate PWM switching frequency, etc.). You can use that complex-pole fitted model to assess the electronic-mechanical dynamic interactions and overall system behavior.This level of design implementation detail is typically used after the control compensation has been designed using continuous (non-switching) linearizable component models, as in this version of the system model: https://www.systemvision.com/design/motion-control-voice-coil-actuator-vca-cpf-plant

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