An advanced control method of inverters in Microgrid

2011 ◽  
Author(s):  
Dan Zhu ◽  
Tong Wang ◽  
Zhi Wang ◽  
ZuYong Sun ◽  
Liang Guo
Keyword(s):  
Control Method ◽  
Advanced Control

scholarly journals The New Evolution for SIA Rotorcraft UAV Project

2010 ◽  
Vol 2010 ◽  
pp. 1-9 ◽  
Author(s):  
Juntong Qi ◽  
Dalei Song ◽  
Lei Dai ◽  
Jianda Han ◽  
Yuechao Wang
Keyword(s):  
Control Method ◽  
Test Bed ◽  
Advanced Control ◽  
Autonomous Mode ◽  
Chinese Academy Of Sciences ◽  
Aerial Vehicle ◽  
Active Modeling ◽  
Rotorcraft Uav ◽  
The One ◽  
Academy Of Sciences

This paper describes recent research on the design, implement, and testing of a new small-scaled rotorcraft Unmanned Aerial Vehicle (RUAV) system—ServoHeli-40. A turbine-powered UAV weighted less than 15 kg was designed, and its major components were tested at the Shenyang Institute of Automation, Chinese Academy of Sciences in Shenyang, China. The aircraft was designed to reach a top speed of more than 20 mps, flying a distance of more than 10 kilometers, and it is going to be used as a test-bed for experimentally evaluating advanced control methodologies dedicated on improving the maneuverability, reliability, as well as autonomy of RUAV. Sensors and controller are all onboard. The full system has been tested successfully in the autonomous mode using the multichannel active modeling controller. The results show that in a real windy environment the rotorcraft UAV can follow the trajectory which was assigned by the ground control station exactly, and the new control method is obviously more effective than the one in the past year's research.

An Advanced Control Method Based on the Pattern Recognize and Neural Network for Bioprocess

1995 ◽  
Vol 28 (3) ◽  
pp. 113-117
Author(s):  
Shuqing Wang ◽  
Wei Zou ◽  
Haibin Qu ◽  
Yibing Yang
Keyword(s):  
Neural Network ◽  
Control Method ◽  
Advanced Control

Research on aero-engine steady model based on an improved compact propulsion system model

2019 ◽  
Vol 234 (6) ◽  
pp. 726-733
Author(s):  
Qiangang Zheng ◽  
Yong Wang ◽  
Fengyong Sun ◽  
Juan Fang ◽  
Haibo Zhang ◽  
...  
Keyword(s):  
Control Method ◽  
System Modeling ◽  
Propulsion System ◽  
System Model ◽  
Testing Time ◽  
Variable Model ◽  
Output Vector ◽  
State Variable ◽  
Advanced Control ◽  
Aero Engine

The aero-engine steady model is the basis of the modern advanced control method such as performance seeking control. An improved compact propulsion system model is proposed to improve the steady model accuracy. The improved compact propulsion system model mainly contains linear model, such as steady-state variable model, and physical-based models, such as inlet model, nonlinear model, and nozzle model. The improved compact propulsion system model applied to full envelop by parameter corrections. The basepoint control vector and basepoint output vector of improved compact propulsion system model are four-dimensional interpolation instead of two-dimensional interpolation as conventional compact propulsion system modeling does. The improved compact propulsion system model not only considers the change of engine state but also take the flight parameter into account. The simulations of the conventional compact propulsion system modeling and the improved compact propulsion system model are conducted in subsonic and transonic flight envelop. The simulations show that, compared with the conventional compact propulsion system modeling, the relative testing errors of the improved compact propulsion system model decrease greatly. Moreover, the testing time of the conventional compact propulsion system modeling and the improved compact propulsion system model are both almost equal to 0.027 ms.

Three-phase soft-switching inverter with coupled inductors, experimental results

2011 ◽  
Vol 59 (4) ◽  
pp. 535-539
Author(s):  
S. Karyś
Keyword(s):  
Control Algorithm ◽  
Control Method ◽  
Design Method ◽  
Soft Switching ◽  
Experimental Results ◽  
Efficiency Improvement ◽  
Coupled Inductors ◽  
Resonant Inverter ◽  
Three Phase ◽  
Advanced Control

Three-phase soft-switching inverter with coupled inductors, experimental results This paper presents experimental results of the three-phase soft-switching inverter with coupled inductors that verify the control method influence on efficiency improvement. Different kinds of control methods were tested on the 6 kW experimental inverter. A short discussion on a few design methods of the resonant tank elements was made. Experimental results confirm that the advanced control algorithm and the proposed new design method of the resonant tank elements significantly increase the efficiency of this resonant inverter.

Welding Distortion Can be Mitigated if Welding Current and Traveling Speed Vary Optimized Along a Weld Path

2014 ◽  
Author(s):  
Mahyar Asadi ◽  
John Goldak ◽  
Arnaud Weck
Keyword(s):  
Control Method ◽  
State Of The Art ◽  
Welding Current ◽  
Welding Distortion ◽  
Advanced Method ◽  
Advanced Control ◽  
3D Photogrammetry ◽  
And Control ◽  
Additional Hardware ◽  
Traveling Speed

Typically, the distortion from welding is mitigated with the use of fixtures, clamps, tack welds and so on. Also the welding current and traveling speed are normally set constant during welding along a weld-path. The authors have developed and implemented an advanced control method that adaptively changes welding current and traveling speed depending on the state of deformation, in order to mitigate the final distortion without the use of additional hardware such as fixtures, clamps, and/or tack welds. It predicts the distortion before actual happening and adjusts parameters to counteract the deformation during welding. The present work implements this advanced method by applying an optimized, varying welding current and traveling speed on an edge-welded bar of Aluminum 5052-H32. A comparison is made between the final welding distortion with the new method, versus the regular method at constant welding current and traveling speed. A virtual predictive model was established to simulate and control the adaptive change of welding current and traveling speed, the optimized profile of the process parameters were performed by a robot, and the transient distortion was measured by state-of-the-art 3D photogrammetry cameras in real–time.

The Development of an Advanced Control Method for the Steer-by-Wire System to Improve the Vehicle Maneuverability and Stability

2003 ◽  
Author(s):  
Se-Wook Oh ◽  
Seok-Chan Yun ◽  
Ho-Chol Chae ◽  
Seok-Hwan Jang ◽  
Jae-Ho Jang ◽  
...  
Keyword(s):  
Control Method ◽  
Advanced Control ◽  
Steer By Wire ◽  
Wire System
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