Kaczmarczyk, S. and Mirhadizadeh, S. (2014) Computer simulation model of a lift car assembly with an active tuned mass damper. In: Kaczmarczyk, S. and Peters, R. (eds.) Symposium on Lift and Escalator Technologies: Volume 4. Northampton, UK: The University of Northampton, CIBSE Lifts Group. 2052-7225. pp. 99-104.
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Information
Abstract:
In engineering systems a Passive Tuned Mass Damper (a secondary mass – spring - damper combination) is often used to reduce vibrations of a primary structure (main mass). In an Active Tuned Mass Damper (ATMD) arrangement vibrations of the main mass are attenuated when the secondary mass (referred to as an active mass) is actively controlled. The ATMD system is equipped with a controller, sensors and an actuator. The attenuation is achieved by the application of control force determined by a suitable feedback control algorithm. In this paper the ATMD method is considered to attenuate resonance vertical vibrations of a lift car assembly – suspension rope system during the lift travel, when the frequency of harmonic excitation acting upon the car assembly becomes near its natural frequency. A mathematical model with the optimal feedback gain calculated using Linear–Quadratic Regulator control law is developed. Then, a case study is presented in which computer simulation is carried out. The simulation results are discussed and the effectiveness of an active tuned mass damper system is demonstrated for a given set of lift system parameters.
Uncontrolled Keywords:
Lift, car, suspension, vibration, Active Tuned Mass Damper
Subjects:
Creators:
Kaczmarczyk, S. and Mirhadizadeh, S.
Editors:
Kaczmarczyk, S. and Peters, R.
Publisher:
The University of Northampton, CIBSE Lifts Group
Faculties, Divisions and Institutes:
Date:
25 September 2014
Date Type:
Publication
Page Range:
pp. 99-104
Title of Book:
Symposium on Lift and Escalator Technologies: Volume 4
Event Title:
4th Symposium on Lift and Escalator Technologies
Event Dates:
25-26 September 2014
Place of Publication:
Northampton, UK
Event Location:
Northampton, UK
Event Type:
Conference
Number of Pages:
6
Language:
English
ISBN:
2052-7225
Status:
Published / Disseminated
Refereed:
Yes
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