Skip to main content
Article thumbnail
Location of Repository

Improved performance of motor-drive systems by SAW shaft torque feedback

By N Schofield, T M O'Sullivan, Chris Bingham and A Lonsdale

Abstract

The paper describes the application of a non-contact, high bandwidth, low cost, SAW-based torque\ud measuring system for improving the dynamic performance\ud of industrial process motor-drive systems. Background to\ud the SAW technology and its motor integration is discussed\ud and a resonance ratio control (RRC) technique for the\ud coordinated motion control of multi-inertia mechanical\ud systems, based on the measurement of shaft torque via a\ud SAW-based torque sensor is proposed. Furthermore, a\ud new controller structure, RRC plus disturbance feedback\ud is proposed, which enables the controller to be designed to\ud independently satisfy tracking and regulation\ud performance. A tuning method for the RRC structure is\ud given based on the ITAE index, normalized as a function of\ud the mechanical parameters enabling a direct performance\ud comparison between a basic proportional and integral (PI)\ud controller. The use of a reduced-order state observer is\ud presented to provide a dynamic estimate of the load-side\ud disturbance torque for a multi-inertia mechanical system,\ud with an appraisal of the composite closed-loop dynamics.\ud The control structures are experimentally validated and\ud demonstrate significant improvement in dynamic tracking\ud performance, whilst additionally rejecting periodic load\ud side disturbances, a feature previously unrealisable except\ud by other, high-gain control schemes that impose small\ud stability margins

Topics: H600 Electronic and Electrical Engineering
Publisher: Sage Publications
Year: 2004
OAI identifier: oai:eprints.lincoln.ac.uk:2596

Suggested articles

Citations

  1. (2001). A new generation non-torsion bar torque sensors for electromechanical power steering applications”,
  2. (2000). A novel ZnO/Si thin-film SAW torque measurement microsystem”, Int. Forum on Wave Electron. and Its Applications,
  3. (2001). Comparison of drivetrain oscillation damping-algorithms for electric vehicles,” Electric Vehicle Symposium (EVS 18),
  4. (1999). Damping of torsional vibrations in high-dynamic-drives,” doi
  5. (2001). Dynamic rotary torque measurement using surface acoustic waves,”
  6. (2002). Feedback Control of Dynamic Systems”, doi
  7. (1996). Measurement of mechanical quantities using quartz sensors”,
  8. (1975). Measurement of SAW velocity versus strain for YX and ST quartz”, doi
  9. (1991). Method and apparatus for measuring strain”, Int. patent public.
  10. (1996). Radio Accessible SAW sensors for non-contact measurement of torque and temperature”, doi
  11. (2003). Simulation and experimental validation of induction machines dynamics driving multi-inertia loads,”
  12. (1999). Slow resonance ratio control for vibration suppression and disturbance rejection in torsional system,” doi
  13. (1998). Suppression of torsional oscillations in a high performance speed servo drive,” doi
  14. (1993). Vibration control of 2-mass resonant system by resonance ratio doi
  15. (1998). Vibration control of two-mass system with low inertia ratio considering practical use,” doi
  16. (2001). Wireless SAW identification and sensor systems”, doi
  17. (1997). Wirelessly interrogable surface acoustic wave sensors for vehicular applications”, doi

To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.