Hassan, A., Torres Pérez, A., Kaczmarczyk, S. and Picton, P. (2015) Active vibration control for a Free Piston Stirling Engine generator using a voice coil actuator. MM (Modern Machinery) Science Journal. March(2015), pp. 547-554. 1803-1269.
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Abstract:
This work presents the study of active vibration control for a FPSE/ LA engine to ensure a reliable engine operation within a broader range of operation frequencies [50 ± 3 Hz] complying with new regulations. An ATMD is discussed as a potential solution for increasing the operational envelope from original frequency requirements of [50 ± 0.5 Hz] to the new range while maintaining vibration amplitudes below 20 µm. A suitable vibration model of the engine setup is discussed and experimentally validated. The active vibration control for the vibration model is achieved by integrating the model of a current controlled Voice coil Motor (VCM). Zero-placement with relative acceleration/position and optimal linear quadratic control with a state observer were studied and compared in the time and frequency domains. The analysis shows that the active control accomplishes damping of vibration even at higher frequencies that coincide with the resonance of the entire system. A set of specifications were obtained based on actuator parameters such as power consumption, actuator strokes and force. The effect of time delays on the stability with each control strategy was investigated based on the proposed vibration model. Delays were found to affect stability depending on both the control methodology and excitation frequency.
Uncontrolled Keywords:
β-type stirling engine, active vibration damping, linear quadratic control, feedback-feedforward with zero-placement, voice coil actuator, electrical current control, effect of time delays
Subjects:
Creators:
Hassan, A., Torres Pérez, A., Kaczmarczyk, S. and Picton, P.
Corporate Creators:
The University of Northampton, Microgen Engine Corporation
Publisher:
MM Science Journal
Faculties, Divisions and Institutes:
Date:
11 March 2015
Date Type:
Publication
Page Range:
pp. 547-554
Journal or Publication Title:
MM (Modern Machinery) Science Journal
Volume:
March
Number:
2015
Language:
English
ISSN:
1803-1269
Status:
Published / Disseminated
Refereed:
Yes
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