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Design and Implementation of Crowbar Circuits Combined with Chopper Circuits for LVRT in Wind Farms
会议论文
Xi'an, Anhui, China, August 7, 2020 - August 9, 2020
作者:
Yifan, Xu
;
Aimin, An
;
Yingying, Zhao
;
Wei, Chen
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浏览/下载:4/0
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提交时间:2020/12/18
Automation
Process control
Surge protection
Timing circuits
Wind powerCo-operative control
Control methods
Crow-bar circuit
Crowbar protection
Design and implementations
Double-fed wind turbines
Low-voltage ride-through
Protection circuits
The stability analysis of quadrotor unmanned aerial vechicles
期刊论文
Lecture Notes in Electrical Engineering, 2017, 卷号: 399, 页码: 383-394
作者:
Liu, Y.-P.
;
Li, X.-Y.
;
Wang, T.-M.
;
Zhang, Y.-H.
;
Mei, P.
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浏览/下载:4/0
  |  
提交时间:2019/12/30
Aerodynamics
Aircraft control
Atmospheric turbulence
Differential equations
Dynamics
Energy conservation
Flight control systems
Landing
Lyapunov functions
Lyapunov methods
Robots
Stability
Structural design
Unmanned aerial vehicles (UAV)
Vibrations (mechanical)
Wearable sensors
Wearable technology
Calculation process
Lyapunov exponent
Method of Lyapunov
Quadrotor unmanned aerial vehicles
Reliability and stability
Stability analysis
Structural parameter
Yawing
Aerodynamic stability
Process design and control in cold rotary forging of non-rotary gear parts
期刊论文
Journal of Materials Processing Technology, 2014, 卷号: 214, 期号: 11, 页码: 2402-2416
作者:
Han, Xinghui
;
Hua, Lin*
;
Zhuang, Wuhao
;
Zhang, Xinchang
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浏览/下载:6/0
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提交时间:2019/12/04
Cold rotary forging
Non-rotary profile
Process design and control
FE simulation
Gear
LABTM control system based on FPGA (EI CONFERENCE)
会议论文
2nd International Conference on Mechatronics and Applied Mechanics, ICMAM 2012, December 8, 2012 - December 9, 2012, Taiwan
Li X. F.
;
Wang X. P.
;
Qi X. D.
;
Wang Y.
;
Yu P.
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浏览/下载:142/0
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提交时间:2013/03/25
This paper presents the digital PI control method for design and simulation of a high precision limited angle brushless torque motor control system in Field Programmable Gate Array device (FPGA). The direct drive structures which are widely applied in many servo control fields. Matlab Xilinx System GeneratorR toolbox based on Fixed-Point Arithmetic is used to design the digital PI controller using DSP architecture
plot the responses of the control system and generate the VHDL source code. The control system model consists of a digital PI
a real LABTM
and a real absolute Inductosyn
encoder to rpm and position blocks. Through loading generated codes in process of the simulation that built by the digital discrete model
it is verified that the rising time of current loop is only 1.2ms
and rate loop is 8ms
overshoot is rarely 4.2%. Finally
the comprehensive positioning accuracy of system can reach up to 5 arc sec
and the rate jitter achieves 5% with the 4 arc sec accuracy absolute Inductosyn. (2013) Trans Tech Publications
Switzerland.
Design of thermostat system based on Proteus simulation software (EI CONFERENCE)
会议论文
2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011, August 12, 2011 - August 14, 2011, Harbin, China
Han Z.
;
Song K.
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浏览/下载:36/0
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提交时间:2013/03/25
In order to solve the problem of precise temperature control
the thermoelectric cooler (TEC) principle widely used is analyzed for the design of the whole control process and selection of control parameters
and then accurate simulation model of the TEC is established in Proteus simulation software. Moreover
combined with the traditional circuit simulation model
the temperature control loop is designed
and the response characteristics of the system are tested using an input signal similar to the unit-step function to achieve the precise temperature control. Simulation results show that the proposed control circuits can precisely convert error signal to output voltage sent to TEC model
and TEC model behaves approximately like a two-pole system. The first pole starts at 20mHz and a second pole at 1Hz. 2011 IEEE.
Design of programmable near infrared cold light source (EI CONFERENCE)
会议论文
2011 International Conference on Electronics and Optoelectronics, ICEOE 2011, July 29, 2011 - July 31, 2011, Dalian, China
Wang R.
;
Fu Q.
;
Suo H.
;
Zhao C.
;
Wang B.
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浏览/下载:28/0
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提交时间:2013/03/25
In the near infrared spectroscopy
detector of Charge-coupled Device requires very high stability for light source. We design the cold light source in the measurement of near infrared spectroscopy. Cold light source consists of high-power op amp OPA549 high current constant current source and proportion integral differential (PID) control algorithm. As is shown in the experimental results
the method is better
the overshoot is very small
the stability is excellent in the process of soft-start. While light intensity was able to meet the requirements of near-infrared instruments to measure. 2011 IEEE.
Optimum method for initial alignment and calibration of inertial navigation systems
期刊论文
2010, 2010
Gao Zhong-yu
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浏览/下载:7/0
Simulation analysis on PID control of distributed parameter model in thermal process
期刊论文
2010, 2010
Chen Xing
;
Li Dong-hai
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浏览/下载:4/0
Wireless cognitive networks:concept and instance
期刊论文
2010, 2010
Hua Nan
;
Cao Zhi-gang
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浏览/下载:5/0
Low noise fully digitally controlled LC oscillator with back-to-back in series MOS varactors
期刊论文
2010, 2010
Wang Shaohua
;
Yu Guangming
;
Liu Yongpan
;
Yang Huazhong
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浏览/下载:4/0
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