Input Force Identification in a Francis Hydro Turbine Unit Model

2018 ◽  
pp. 309-323
Author(s):  
Tobias S. Morais ◽  
Aldemir Ap. Cavalini ◽  
Gilberto P. Melo ◽  
Valder Steffen
Keyword(s):  
Turbine Unit ◽  
Force Identification ◽  
Hydro Turbine ◽  
Input Force ◽  
Unit Model

Input force identification: Application to soil-pile interaction

2009 ◽  
Vol 16 (2) ◽  
pp. 223-240 ◽  
Author(s):  
Ai-Lun Wu ◽  
Chin-Hsiung Loh ◽  
Jann N. Yang ◽  
Jian-Huang Weng ◽  
Chia-Han Chen ◽  
...  
Keyword(s):  
Force Identification ◽  
Input Force ◽  
Pile Interaction

Analysis and Control of Once-Through Boiler-Turbine Unit

2013 ◽  
Vol 805-806 ◽  
pp. 678-681
Author(s):  
Wei Jian Huang ◽  
Yu Zhong Wu ◽  
Wei Min Kan ◽  
Xi Zhang
Keyword(s):  
Control System ◽  
Disturbance Rejection ◽  
Turbine Unit ◽  
Control Structure ◽  
Pi Control ◽  
Control System Design ◽  
Output Variable ◽  
Unit Model ◽  
Study Results ◽  
And Control

A nonlinear once-through coal-fired boiler-turbine unit model is introduced and analyzed for the purpose of control system design. Firstly, input-output variable pairing configurations for this 3×3 system are obtained based on static relative gain array and row-Gershgorin band analysis using its linearization model at 100% load. A decentralized PI control system is then deployed and tuned to explore its control system performance as the basis of further study. Results show that the decentralized control structure has good setpoint tracking performance, while the disturbances between loops are still notable due to non-diagonal dominance, thus control strategy of decoupling or disturbance rejection is necessary.

Emergency Generator Startup Study of a Hydro Turbine Unit for a Nuclear Generation Facility

2004 ◽  
Vol 40 (5) ◽  
pp. 1191-1199 ◽  
Author(s):  
J.J. Dai ◽  
D. Xiao ◽  
F. Shokooh ◽  
C. Schaeffer ◽  
A. Benge
Keyword(s):  
Turbine Unit ◽  
Hydro Turbine ◽  
Generation Facility

scholarly journals Impact Force Identification by Using Modal Transformation Method for Automobile Test Rig

2013 ◽  
Vol 471 ◽  
pp. 102-106 ◽  
Author(s):  
Abdul Ghaffar Abdul Rahman ◽  
Khoo Shin Yee ◽  
Zubaidah Ismail ◽  
Chong Wen Tong ◽  
Siamak Noroozi
Keyword(s):  
Impact Force ◽  
Force Measurement ◽  
Transformation Method ◽  
Impact Excitation ◽  
Dynamic Force ◽  
Test Rig ◽  
Force Identification ◽  
Input Force ◽  
Material Fatigue

In the automobile industry, impact force is the main cause for material fatigue in lightweight vehicles. Bump-excited impact force is the most common case, which causes damage to vehicles and reduces the quality of the ride. Force identification is important to reflect the structure's health so that action such as structure modification can be taken before material fatigue. However, direct measurement by using force transducer is not practical due to difficulty in force sensor configuration. A methodology utilizing Operating Deflection Shape (ODS) analysis, Frequency Response Function (FRF) measurement and Modal Transformation Method (MTM) to evaluate the dynamic force is proposed here. This method is called indirect force measurement by using inverse technique. The performance of this approach was demonstrated via experiment. From the measured responses and measured dynamic characteristics of an automobile test rig, a real time mathematical manipulation can generate the systems input force. The force location is known in priori for impact excitation and therefore the inverse problem is well-posed. This method was tested using different force location with unique input force. It shows that high quality of curve fitting to extract the modal parameters such as damped natural frequency, modal damping and residue mode shape is essential to obtain a high accuracy force determination result.

Input force identification using Kalman filter techniques: application to soil-pile interaction

2008 ◽  
Author(s):  
Chin-Hsiung Loh ◽  
Ai-Lun Wu ◽  
Jann N. Yang ◽  
Chia-Han Chen ◽  
Tzou-Shin Ueng
Keyword(s):  
Kalman Filter ◽  
Force Identification ◽  
Input Force ◽  
Pile Interaction

Speed and Active Power Control of Hydro Turbine Unit

2005 ◽  
Vol 20 (2) ◽  
pp. 424-434 ◽  
Author(s):  
B. Strah ◽  
O. Kuljaca ◽  
Z. Vukic
Keyword(s):  
Power Control ◽  
Turbine Unit ◽  
Active Power ◽  
Active Power Control ◽  
Hydro Turbine
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