| Dynamic Heat Generation Modeling and Thermal Management of Electromechanical Actuators |
Jul 2012 |
122 pages |
| Authors:
Louis Chow; Thomas Wu; Yeong-Ren Lin; Yang Hu; David Woodburn; Ray Zhou; Jared Bindl; Wendell Brokaw; Tony Camarano; UNIVERSITY OF CENTRAL FLORIDA ORLANDO
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 | The heat loads in an electromechanical actuator (EMA) and an electronic unit (EU) are highly transient and localized in nature; therefore, thermal management systems (TMS) designed for time-averaged, uniform heat loads of an EMA and EU are inadequate. The heat loads of EMAs must be accurately determined and managed if EMAs are to be used as replacements to current hydraulic actuators. This report presents a dynamic heat generation model and ... |
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| Dynamic Testing of Electromechanical Actuators Using Time-History Data |
Nov 2010 |
11 pages |
| Authors:
Nicholas Rolinski; Quinn Leland; Earl Gregory; Brett Jordan; David Woodburn; Thomas Wu; DAYTON UNIV RESEARCH INST (URDI) OH
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| A commercial electromechanical actuator (EMA) is to be dynamically tested with predetermined stroke and load profiles for transient thermal and electric power behavior to validate a numerical model used for aerospace applications. The EMA will follow the stroke profile representative of a real aircraft mission duty cycle. A hydraulic press will exert a corresponding load profile onto the EMA. Specialized hydraulic load control methods must be employed to meet the ... |
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| Integrated Nonlinear Dynamic Modeling and Field Oriented Control of Permanent Magnet (PM) Motor for High Performance EMA |
Nov 2010 |
18 pages |
| Authors:
David Woodburn; Thomas Wu; Shaohua Lin; Jared Bindl; Yang Hu; Wendell Brokaw; Louis Chow; Lei Zhon; Yeong-Ren Lin; Quinn Leland; Nicholas Rolinski; UNIVERSITY OF CENTRAL FLORIDA ORLANDO
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| This paper describes the integrated modeling of a permanent magnet (PM) motor used in an electromechanical actuator (EMA). A nonlinear, lumped-element motor electric model is detailed. The parameters, including nonlinear inductance, rotor flux linkage, and thermal resistances, and capacitances, are tuned using FEM models of a real, commercial motor. The field-oriented control (FOC) scheme and the lumped-element thermal model are also described. |
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| Lumped Node Thermal Modeling of EMA with FEA Validation (PREPRINT) |
NOV 2010 |
20 pages |
| Authors:
Lei Zhou; Yeong-Ren Lin; Louis Chow; David Woodburn; Thomas Wu; Jared Bindl; Yang Hu; Wendell Brokaw; Quinn Leland; Ben Tran; Brett Jordan; Earl Gregory; Steve Iden; Nicholas Rolinski; UNIVERSITY OF CENTRAL FLORIDA ORLANDO DEPT OF MECHANICAL MATERIALS AND AEROSPACE ENGINEERING
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| The development of electromechanical actuators (EMAs) is the key technology to build an all-electric aircraft. One of the greatest hurdles to replacing all hydraulic actuators on an aircraft with EMAs is the acquisition, transport and rejection of waste heat generated within the EMAs. The absence of hydraulic fluids removes an attractive and effective means of acquiring and transporting the heat. To address thermal management under limited cooling options, accurate spatial ... |
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