Simulation Studies of On-Line Power Control Using Inverse Kinetics

2005 ◽  
Author(s):  
W.M. Ratemi ◽  
W.M. El-Ghadamsi ◽  
A.K. Belaid
Keyword(s):  
Power Control ◽  
Simulation Studies ◽  
On Line

Theory and Application of the Lang-Gilles Observer for Distillation Processes

2016 ◽  
Author(s):  
Maxim Stuckert
Keyword(s):  
Model Predictive Control ◽  
Predictive Control ◽  
Distillation Column ◽  
Simulation Studies ◽  
Multicomponent Mixtures ◽  
Plant Model ◽  
Model Mismatch ◽  
Tray Efficiency ◽  
Full State ◽  
On Line

This thesis deals with the nonlinear full state observer for distillation processes first introduced by Lang and Gilles in 1990. The observer is very attractive in practice as it requires only few temperature measurements in each section of a distillation column and only few observer parameters need to be tuned. We provide conditions under which this observer converges and derive a simple rule for the tuning of the observer parameters. We also give a method for the on-line estimation of the Murphree tray efficiency. Such on-line methods are rarely found in ­literature. In a sequence of simulation studies, we investigate the capabilities of the observer for the estimation of the tray efficiency and for model-predictive control. The simulation studies are based on distillation processes for separation of multicomponent mixtures and one of the studies introduces a plant-model mismatch. ...

Simulation studies on line-tying stabilization of spheromak tilting instability

1984 ◽  
Vol 27 (4) ◽  
pp. 778 ◽  
Author(s):  
Takaya Hayashi ◽  
Tetsuya Sato
Keyword(s):  
Simulation Studies ◽  
On Line ◽  
Line Tying

On-Line Identification of Hysteretic Systems

1998 ◽  
Vol 65 (1) ◽  
pp. 194-203 ◽  
Author(s):  
A. G. Chassiakos ◽  
S. F. Masri ◽  
A. W. Smyth ◽  
T. K. Caughey
Keyword(s):  
Adaptive Estimation ◽  
Structural Systems ◽  
Simulation Studies ◽  
Restoring Force ◽  
Hysteretic Systems ◽  
Line Identification ◽  
Wide Range ◽  
On Line ◽  
Identification Approach ◽  
Hereditary Nature

Using adaptive estimation approaches, a method is presented for the on-line identification of hysteretic systems under arbitrary dynamic environments. The availability of such an identification approach is crucial for the on-line control and monitoring of nonlinear structural systems to be actively controlled. In spite of the challenges encountered in the identification of the hereditary nature of the restoring force of such nonlinear systems, it is shown through the use of simulation studies and experimental measurements that the proposed approach can yield reliable estimates of the hysteretic restoring force under a very wide range of excitation levels and response ranges.

Design and Development of Power System for Transmission Line Online Monitor Device

2014 ◽  
Vol 1008-1009 ◽  
pp. 530-535 ◽  
Author(s):  
Zi Jian Cai ◽  
Zheng Hua Feng
Keyword(s):  
Power Control ◽  
Transmission Line ◽  
Monitoring System ◽  
Utility Model ◽  
Solar Panels ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
On Line ◽  
Power Point

The utility model provides a transmission line on-line monitoring system powered devices, including power generation systems, and power control systems; power system consists of solar panels and batteries composed of the power control system consists of DC-DC converter circuit, voltage and current sampling circuit, microcontroller system and charge-discharge circuit; power control system with maximum power point tracking (Maximum Power Point Tracking: MPPT) control the power output of solar panels; the utility model role is: to improve the transmission line on-line monitoring system for solar energy utilization efficiency , extended battery life, providing a steady continuous power for outdoor transmission line online monitoring system.

scholarly journals On-line range verification for proton beam therapy using spherical ionoacoustic waves with resonant frequency

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Taisuke Takayanagi ◽  
Tomoki Uesaka ◽  
Yuta Nakamura ◽  
Mehmet Burcin Unlu ◽  
Yasutoshi Kuriyama ◽  
...  
Keyword(s):  
Resonant Frequency ◽  
Proton Beam ◽  
Patient Positioning ◽  
Proton Beam Therapy ◽  
Simulation Studies ◽  
Clinical Dose ◽  
On Line ◽  
Verification Methodology ◽  
Beam Range ◽  
Range Verification

AbstractIn contrast to conventional X-ray therapy, proton beam therapy (PBT) can confine radiation doses to tumours because of the presence of the Bragg peak. However, the precision of the treatment is currently limited by the uncertainty in the beam range. Recently, a unique range verification methodology has been proposed based on simulation studies that exploit spherical ionoacoustic waves with resonant frequency (SPIREs). SPIREs are emitted from spherical gold markers in tumours initially introduced for accurate patient positioning when the proton beam is injected. These waves have a remarkable property: their amplitude is linearly correlated with the residual beam range at the marker position. Here, we present proof-of-principle experiments using short-pulsed proton beams at the clinical dose to demonstrate the feasibility of using SPIREs for beam-range verification with submillimetre accuracy. These results should substantially contribute to reducing the range uncertainty in future PBT applications.

Stator Flux Orientation Decoupled Power Control of Doubly-Fed Induction Generator

2013 ◽  
Vol 394 ◽  
pp. 278-283
Author(s):  
Feng Zhang ◽  
Chong Chong Bai ◽  
Feng Qiao ◽  
Ye Hui Lu
Keyword(s):  
Mathematical Model ◽  
Power Control ◽  
Reactive Power ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Simulation Studies ◽  
Active And Reactive Power ◽  
Simulation Results ◽  
Stator Flux ◽  
Doubly Fed

The overall mathematical model of doubly-fed induction generator (DFIG) is established in this paper, a controller is designed in detail for DFIG under the strategy of stator flux orientation (SFO). Simulation studies are carried out in this paper with Matlab/Simulink under three operation states of DFIG, the simulation results verified that the controller designed can realize the decoupling of active and reactive power effectively.

Turbo-Shaft Engine Model Compensation Based on LSSVR

2012 ◽  
Vol 246-247 ◽  
pp. 738-743
Author(s):  
Feng Lu ◽  
Yi Qiu Lv ◽  
Wei Lin
Keyword(s):  
Neural Network ◽  
Least Squares ◽  
Support Vector Regression ◽  
Correction Method ◽  
Support Vector ◽  
Simulation Studies ◽  
Model Errors ◽  
Engine Model ◽  
Modeling Errors ◽  
On Line

Considering the larger modeling errors between the turbo-shaft engine and on-board model, the model correction method based on least squares support vector regression is proposed. Firstly, the modeling principle of on-board turbo-shaft engine model is introduced, and then the structure of model combined with a compensation module is designed. The algorithm of LSSVR is used to build up the model compensation module, which is trained off-line and corrected on-line. Simulation studies on turbo-shaft engine have shown that the LS-SVM method can effectively reduce the model errors, and comparison with the interpolation correction, neural network one, the method proposed has better precision.

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