Integrated Diagnostic and Preload Control for Ball Screw Drives by Means of Self-Sensing Actuators

Abstract:

Piezoelectric ceramics can be used as sensors, as well as actors. The concept of a self- sensing-actuator tries to use both modes of operation in one device, allowing the economic integration of mechatronic systems. Possible fields of application are ball screws of machine tools, where wear-induced degradation of the preload can be compensated. Furthermore, the signal processing part of such a system can be used to gather information related to the condition of the ball screw. Both excitation signal generation and filtering of the measured signal have to offer high flexibility and signal fidelity. In this article the concept of a power amplifier and its corresponding signal processing system are presented.

• Periodical: Advanced Materials Research (Volume 769)
• Pages: 271-277
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.769.271
• Online since: September 2013
• Authors: Christopher Ehrmann, Stefan Herder
• Keywords: Condition Monitoring, Machine Tool, Sensor/Actuator Integration

References

[1] Munzinger, C.; Weis, M.; Herder, S.: Sensor/actuator integration on the basis of resonant effects of piezoelectric transducers. In ACTUATOR 2010 Conference proceedings, pp.609-612, June 2010.

[2] Schopp, M.; Sensorbasierte Zustandsdiagnose und -prognose von Kugelgewindetrieben. Dissertation, University of Karlsruhe, (2009)

[3] Fleischer, J.; Herder, S.: Adaptronic Ball Screw for the Enhancement of Machine Precision. In: Procedia CIRP 1 (2012), Nr. 0, p.621–626

DOI: 10.1016/j.procir.2012.05.010

[4] Wolf, W.; Cyber-Physical Systems. Computer, vol. 42, no. 3, p.8889, Mar. 2009.

[5] Stiebel, C.; Leistungsverstärker zur verlustarmen Ansteuerung von kapazitiven Lasten. Saarland University, Dissertation, (2002)

[6] Chicharo, J. F. ; Kilani, M. T.: A sliding Goertzel algorithm. In: Signal Processing 52 (1996), p.283–297

DOI: 10.1016/0165-1684(96)00066-7