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Technical Brief

On the Energetics of a Mechatronic Elevator System

[+] Author and Article Information
Kun-Yung Chen

Assistant Professor
Department of Mechanical Engineering,
Air Force Institute of Technology,
No. 198, Jieshou West Road, Gangshan District,
Kaohsiung City 820, Taiwan
e-mail: u9615906@nkfust.edu.tw

Rong-Fong Fung

Professor
Department of Mechanical and Automation Engineering,
National Kaohsiung First University of Science and Technology,
No. 1, University Road, Yanchao District,
Kaohsiung City 824, Taiwan
e-mail: rffung@nkfust.edu.tw

Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received March 10, 2014; final manuscript received March 13, 2015; published online April 17, 2015. Assoc. Editor: Junmin Wang.

J. Dyn. Sys., Meas., Control 137(8), 084501 (Aug 01, 2015) (6 pages) Paper No: DS-14-1109; doi: 10.1115/1.4030063 History: Received March 10, 2014; Revised March 13, 2015; Online April 17, 2015

The energy balance equation consisting of mechanical and electrical parts of a mechatronic elevator system is studied in this paper. The total input energy is equal to the mechanical and electrical energies, where a weighting factor should be added for the mechatronic system. The calculus of variation is implemented to find the minimum input electrical energy control (MIEEC) and minimum dissipation energy control (MDEC), which are compared and found to have the same results. From numerical simulations, it is confirmed to demonstrate that the energy balance equation must contain a weighting factor in a mechatronic system.

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References

Figures

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Fig. 1

Motor drive system: (a) block diagram of a PMSM control system and (b) gear speed-reducer

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Fig. 2

Physical model of the mechatronic elevator system

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Fig. 3

Numerical responses of the mechatronic elevator system by the MIEEC method between cases 1 and 2

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Fig. 4

Comparisons of the total input, dissipation, and storage energies between cases 1 and 2

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