Lumped parameter modeling of hybrid magnetomotive force electromechanical valve actuator

Abstract In this study, an innovative hybrid permanent magnet (PM)/electromagnet (EM) magneto-motive force (MMF) actuator is proposed for variable valve timing camless engines. The proposed design provides a large magnetic force with low energy consumption (startup and valve holding), PM demagnetization isolation, and improved transient response. The modified hybrid valve actuator (MHVA) was designed in ANSYS Maxwell software and validated empirically by prototype. A lumped parameter model (LPM) based on mathematical equations is developed to approximate Finite Element Method (FEM) and experimental results. The LPM is divided into electrical, magnetic and mechanical subsystems that are developed and integrated in MATLAB software. The comparative analysis of LPM, FEM and empirical results confirmed improved dynamic performance and energy consumption.

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Dynamic Performance of Lumped Parameter Model for Superconducting Levitation

IEEE Transactions on Applied Superconductivity ◽

10.1109/tasc.2016.2581698 ◽

2016 ◽

Vol 26 (6) ◽

pp. 1-8 ◽

Cited By ~ 1

Author(s):

Clay S. Hearn ◽

Siddharth B. Pratap ◽

Dongmei Chen ◽

Raul G. Longoria

Keyword(s):

Dynamic Performance ◽

Lumped Parameter Model ◽

Lumped Parameter ◽

Superconducting Levitation

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Optimization of Equipment Control Parameters to Minimize HVAC Energy Consumption

ASME 2011 5th International Conference on Energy Sustainability, Parts A, B, and C ◽

10.1115/es2011-54063 ◽

2011 ◽

Author(s):

Aaron P. Wemhoff

Keyword(s):

Energy Consumption ◽

Energy Savings ◽

Control Method ◽

The United States ◽

Lumped Parameter Model ◽

Base Case ◽

Control Parameters ◽

Household Energy ◽

Lumped Parameter ◽

Air Conditioning Systems

Heating, Ventilating, and Air Conditioning Systems (HVAC) consume nearly one-third of household energy in the United States. The optimization of the control parameters in HVAC equipment allows for a reduction in energy consumption. In this study, a supervisory control method is applied to a lumped parameter model of an HVAC system of interest containing a chiller and three dampers. The method determines the choice of control parameters that minimize the energy consumption for 1000 sampled steady-state loads. An energy savings of 39% was achieved using the method in this study compared to the base case.

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A Novel Design and Implementation of a Lightweight Energy-Efficient Robotic Fish

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.719-720.298 ◽

2015 ◽

Vol 719-720 ◽

pp. 298-305

Author(s):

Qin Yan ◽

Wen Shang ◽

Jun Zhong ◽

Qi Xin Zhu

Keyword(s):

Energy Consumption ◽

Energy Efficient ◽

Low Energy ◽

The Novel ◽

Performance Study ◽

Kinematic Parameters ◽

Magnetomotive Force ◽

Design And Implementation ◽

Low Energy Consumption ◽

Novel Design

Inspired by the astonishing ability of the fish, more and more researchers devote themselves to improving the performance of the underwater robotic propeller. In this paper, a novel design and a preliminary performance study of a lightweight robofish are presented. Firstly, the principle of the actuator by magnetomotive force is introduced. Secondly, the implementation of the biomimetic robofish is investigated. Finally, several expriments are conducted to explore the energy consumption of the magnetomoive force actuator and the affection of the kinematic parameters on the velocity. The experimental results reveal that the novel biomimetic robofish driven by magnetomotive force has a low energy consumption and shows good performance in swimming.

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Characterization and Modeling of the Dynamic Behavior of a Liquid-Vapor Phase Change Actuator

Volume 11: Micro and Nano Systems, Parts A and B ◽

10.1115/imece2007-42567 ◽

2007 ◽

Author(s):

H. Bardaweel ◽

R. Richards ◽

L. Weiss ◽

C. Richards ◽

M. Anderson

Keyword(s):

Phase Change ◽

Vapor Phase ◽

Dynamic Performance ◽

Lumped Parameter Model ◽

Frequency Range ◽

Two Phase ◽

Lumped Parameter ◽

Phase Fluid ◽

Fft Analysis ◽

Liquid Vapor

In this work a study of the dynamic performance of a liquid-vapor phase change actuator is presented. The actuator consists of a cavity filled with a two phase fluid bounded by a thin membrane into which heat is added and a cover slip which is displaced by the expansion of the vapor. An experimental actuator was designed so that a parametric study of geometry and operation parameters could be conducted. A lumped parameter model of the system was developed to predict forces and displacements produced by the addition of heat. The input to the model is the heat and the output is the displacement of the actuator. FFT analysis of the actuator deflection and heat input are performed. This procedure allows the measurement of the transfer function between actuator displacement as output and heat as input over a frequency range of 10 to 500 Hz. These data are compared to the predictions of the lumped parameter model. Agreement is favorable.

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THE DESIGN OF HYBRID ELECTROMECHANICAL VALVE ACTUATOR: EFFECTS OF CONSTRUCTION PARAMETERS

Transactions of the Canadian Society for Mechanical Engineering ◽

10.1139/tcsme-2017-1004 ◽

2017 ◽

Vol 41 (1) ◽

pp. 51-64

Author(s):

Jawad Aslam ◽

Xing-Hu Li ◽

Hai Sun

Keyword(s):

Permanent Magnet ◽

Low Energy ◽

Coil Current ◽

Magnetomotive Force ◽

Flexible Control ◽

Coil Inductance ◽

Low Energy Consumption ◽

Camless Engine ◽

Variable Valve ◽

Construction Parameter

In this paper, a novel modified cylindrical core, axis symmetric, low-inductance, hybrid permanent magnet (PM)/electromagnet (EM) magnetomotive force (MMF) actuator is proposed for variable valve timing camless engine. The new design provides large magnetic force with low energy consumption (startup and holding force), permanent magnet demagnetization isolation and improved transient response. The design and construction parameter sensitivity simulation results confirm the force of approximately 200 N (in the presence of coil current) and 500 N (in the absence of coil current) at equilibrium position and armature seat, respectively. An improvement in transition time due to low coil inductance, flexible control with parallel coils and 41.96% low energy dissipation is observed.

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