Karl-Josef Hoffmann

Design Methodology of Application Specific Integrated Circuits for Mechatronic Systems

Abstract In this paper the implementation of the information processing element of mechatronic applications is described. First, a brief overview of a mechatronic application, an integrated active magnetic bearing system, is given. The design process for realizing a software as well as a hardware prototype of the controller is described and details of the individual modules within the design process are discussed. The controller of the magnetic bearing is implemented using a graphical high-level approach. From this specification a C as well as a VHDL description is generated automatically and transferred either as a software prototype to a DSP system or as a hardware prototype to a FPGA-based system both located at the test rig.

Control aspects of active magnetic bearings

Abstract The challenges of active magnetic bearing control are reviewed and several new areas of research are discussed. Robust multivariable control design techniques are examined for the design of controllers for a high speed milling spindle. Adaptive vibration control is shown to be very effective in the suppression of synchronous vibration due to imbalance. Finally, software compensation of actuator nonlinearities is demonstrated to be highly effective in obtaining a linear plant for control system design.