CT and Patient Table

A custom all-in-one brushless DC motion control modul (MCM)

developed for GE’s NM (Nuclear Medicine), CT (Computed Topography), PET (Positron Emission Tomography) and Patient Table. The MCM module has replaced six separate components, fitting them in a single cost and space efficient module with a single product number for all its axes.

Absolute dual loop feedback for collision protection or smoother operation

For enhanced control, the module connects two encoders to a single axis – a preliminary feedback control is connected to the motor, while a secondary feedback control monitors the load. On every power up, MCM sends the absolute position of each axis to the host controller for collision protection to allow smooth operation and prevent any axis backlash, by reading dual feedback as shown in the diagram below.

Conforming to medical industry standards

The control module conforms to the medical industry’s standard (Medical 60601-1-2 Class B), including conformity to electromagnetic standards (EMI/EMC).
The module features an auxiliary line to monitor safety, emergency release function, and CANopen® communications interface.