Trajectory Damping Control Technique for Hypersonic Glide Reentry

This paper introduces mechanics and electronic coupling mode of piezoelectric intelligent structures, and discusses the key technology and potential prospect of intelligent structures in application of vibration control. A multiple-input multiple-output transfer function model of piezoelectric plates is derived and an analogy for modal control between the piezoelectric structures and general ones is established. A concept, "piezoelectric vibration modes", is presented. Based on this concept and by experiment development, a "quasi-independent modal control" technique is presented, attempting to approach, with hardware as simple as possible, independent modal control. The experiment progress and results for multiple modal damping control show its effectiveness and practicality. The modal damping of piezoelectric intelligent structures can be increased enormously. They have good advantage and potential prospect in application of structure vibration control.

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Wide-area Power System Oscillation Damping using Model Predictive Control Technique

IEEJ Transactions on Power and Energy ◽

10.1541/ieejpes.131.536 ◽

2011 ◽

Vol 131 (7) ◽

pp. 536-541 ◽

Cited By ~ 2

Author(s):

Tarek Hassan Mohamed ◽

Abdel-Moamen Mohammed Abdel-Rahim ◽

Ahmed Abd-Eltawwab Hassan ◽

Takashi Hiyama

Keyword(s):

Model Predictive Control ◽

Power System ◽

Predictive Control ◽

Wide Area ◽

Control Technique ◽

Oscillation Damping

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Parametric Study of Damping Characteristics of Magneto-Rheological Damper: Mathematical and Experimental Approach

Pollack Periodica ◽

10.1556/606.2020.15.3.4 ◽

2020 ◽

Vol 15 (3) ◽

pp. 37-48

Author(s):

Zubair Rashid Wani ◽

Manzoor Ahmad Tantray

Keyword(s):

Structural Control ◽

Research Work ◽

Testing Machine ◽

Input Voltage ◽

Damping Coefficient ◽

Control Technique ◽

Damping Force ◽

Active Devices ◽

Active Structural Control ◽

Magneto Rheological

The present research work is a part of a project was a semi-active structural control technique using magneto-rheological damper has to be performed. Magneto-rheological dampers are an innovative class of semi-active devices that mesh well with the demands and constraints of seismic applications; this includes having very low power requirements and adaptability. A small stroke magneto-rheological damper was mathematically simulated and experimentally tested. The damper was subjected to periodic excitations of different amplitudes and frequencies at varying voltage. The damper was mathematically modeled using parametric Modified Bouc-Wen model of magneto-rheological damper in MATLAB/SIMULINK and the parameters of the model were set as per the prototype available. The variation of mechanical properties of magneto-rheological damper like damping coefficient and damping force with a change in amplitude, frequency and voltage were experimentally verified on INSTRON 8800 testing machine. It was observed that damping force produced by the damper depended on the frequency as well, in addition to the input voltage and amplitude of the excitation. While the damping coefficient (c) is independent of the frequency of excitation it varies with the amplitude of excitation and input voltage. The variation of the damping coefficient with amplitude and input voltage is linear and quadratic respectively. More ever the mathematical model simulated in MATLAB was in agreement with the experimental results obtained.

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A Proposal of Cyclic Sleep Control Technique for Backup Resources in ROADM Systems to Reduce Power Consumption of Photonic Network

IEICE Transactions on Communications ◽

10.1587/transcom.e97.b.2698 ◽

2014 ◽

Vol E97.B (12) ◽

pp. 2698-2705

Author(s):

Tomoyuki HINO ◽

Hitoshi TAKESHITA ◽

Kiyo ISHII ◽

Junya KURUMIDA ◽

Shu NAMIKI ◽

...

Keyword(s):

Power Consumption ◽

Control Technique ◽

Reduce Power Consumption ◽

Photonic Network ◽

Sleep Control

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Quasi-Periodic Control Technique for Minimizing Fuel Consumption During Record Vehicle Competition

Archive of Mechanical Engineering ◽

10.2478/meceng-2013-0012 ◽

2013 ◽

Vol 60 (2) ◽

pp. 185-197 ◽

Cited By ~ 2

Author(s):

Paweł Sulikowski ◽

Ryszard Maronski

Keyword(s):

Fuel Consumption ◽

Optimal Control Theory ◽

Slope Angle ◽

Control Technique ◽

Decision Variables ◽

Aeronautical Engineering ◽

The One ◽

Optimal Driving ◽

The Given ◽

Engine Power

The problem of the optimal driving technique during the fuel economy competition is reconsidered. The vehicle is regarded as a particle moving on a trace with a variable slope angle. The fuel consumption is minimized as the vehicle covers the given distance in a given time. It is assumed that the run consists of two recurrent phases: acceleration with a full available engine power and coasting down with the engine turned off. The most fuel-efficient technique for shifting gears during acceleration is found. The decision variables are: the vehicle velocities at which the gears should be shifted, on the one hand, and the vehicle velocities when the engine should be turned on and off, on the other hand. For the data of students’ vehicle representing the Faculty of Power and Aeronautical Engineering it has been found that such driving strategy is more effective in comparison with a constant speed strategy with the engine partly throttled, as well as a strategy resulting from optimal control theory when the engine is still active.

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