Stability Analysis and Design of a Mono-Pulse Photoelectric Detecting System

2013 ◽  
Vol 389 ◽  
pp. 680-684
Author(s):  
Ai Lian Zheng ◽  
Jie Zhang ◽  
Bo Zhi Huang
Keyword(s):  
Signal Processing ◽  
Stability Analysis ◽  
Laser Diode ◽  
Signal Analysis ◽  
Detector Array ◽  
Laser Source ◽  
Small Signal ◽  
Analysis And Design ◽  
Photoelectric Detector ◽  
The Stability

This paper presents the stability analysis and design of a mono-pulse photoelectric detecting system, which consists of a laser diode and a photoelectric detector array. The laser source is a laser bean and the response of the detector is a mono-pulse small signal. The pulses type height is 100mV and type width is 1mS. System can detect the laser beans position on the detector target thought mono-pulse detecting. After signal analysis and signal processing, the Interference is reduced, the multi-response is resolved and the mono-pulse is detected well.

scholarly journals Impedance Aggregation Method of Multiple Wind Turbines and Accuracy Analysis

Energies ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 2035 ◽  
Author(s):  
Liang Chen ◽  
Heng Nian ◽  
Yunyang Xu
Keyword(s):  
Stability Analysis ◽  
Reference Frame ◽  
Wind Turbines ◽  
Power Distribution ◽  
Wind Farm ◽  
System Level ◽  
Small Signal ◽  
Impedance Model ◽  
The Stability ◽  
The Impact

The sequence domain impedance modeling of wind turbines (WTs) has been widely used in the stability analysis between WTs and weak grids with high line impedance. An aggregated impedance model of the wind farm is required in the system-level analysis. However, directly aggregating WT small-signal impedance models will lead to an inaccurate aggregated impedance model due to the mismatch of reference frame definitions among different WT subsystems, which may lead to inaccuracy in the stability analysis. In this paper, we analyze the impacts of the reference frame mismatch between a local small-signal impedance model and a global one on the accuracy of aggregated impedance and the accuracy of impedance-based stability analysis. The results revealed that the impact is related to the power distribution of the studied network. It was found that that the influence of mismatch on stability analysis became subtle when subsystems were balanced loaded. Considering that balanced loading is a common configuration of the practical application, direct impedance aggregation by local small-signal models can be applied due to its acceptable accuracy.

Divided DQ Small-Signal Model: A New Perspective for the Stability Analysis of Three-Phase Grid-Tied Inverters

2019 ◽  
Vol 66 (8) ◽  
pp. 6493-6504 ◽  
Author(s):  
Zhikang Shuai ◽  
Yang Li ◽  
Weimin Wu ◽  
Chunming Tu ◽  
An Luo ◽  
...  
Keyword(s):  
Stability Analysis ◽  
Small Signal ◽  
Signal Model ◽  
Small Signal Model ◽  
Three Phase ◽  
New Perspective ◽  
The Stability

scholarly journals Small-Signal Modeling, Stability Analysis and Design Optimization of Single-Phase Delay-Based PLLs

2016 ◽  
Vol 31 (5) ◽  
pp. 3517-3527 ◽  
Author(s):  
Saeed Golestan ◽  
Josep M. Guerrero ◽  
Ana Vidal ◽  
Alejandro G. Yepes ◽  
Jesus Doval-Gandoy ◽  
...  
Keyword(s):  
Stability Analysis ◽  
Design Optimization ◽  
Single Phase ◽  
Phase Delay ◽  
Small Signal ◽  
Signal Modeling ◽  
Analysis And Design ◽  
Small Signal Modeling

scholarly journals Small-Signal Analysis and Control of Soft-Switching Naturally Clamped Snubberless Current-Fed Half-Bridge DC/DC Converter

2020 ◽  
Vol 10 (17) ◽  
pp. 6130
Author(s):  
Koyelia Khatun ◽  
Vakacharla Venkata Ratnam ◽  
Akshay Kumar Rathore ◽  
Beeramangalla Lakshminarasaiah Narasimharaju
Keyword(s):  
Digital Signal Processor ◽  
Signal Analysis ◽  
Controller Design ◽  
Design Procedure ◽  
Digital Signal ◽  
Soft Switching ◽  
Small Signal ◽  
Small Signal Analysis ◽  
Current Controller ◽  
The Stability

This paper presents small-signal analysis of a soft-switching naturally clamped snubberless isolated current-fed half-bridge (CFHB) DC-DC converter using state-space averaging. A two-loop average current controller was designed and implemented on a digital signal processor. The complete design procedure is presented here. Simulation results using software PSIM 11.1 are shown to validate the stability of the control system and the controller design. Experimental results for the step changes in load current vividly demonstrated satisfactory transient performance of the converter and validated the developed small-signal model and the control design.

Control-Oriented Methods for Turbomachinery Noise Simulation

2017 ◽  
Vol 140 (1) ◽  
Author(s):  
Alex Siu Hong Lau ◽  
Siyang Zhong ◽  
Xun Huang
Keyword(s):  
Stability Analysis ◽  
Time Domain ◽  
Sound Propagation ◽  
Impedance Boundary Condition ◽  
Generalized Function ◽  
Mean Flow ◽  
Impedance Boundary ◽  
Analysis And Design ◽  
Hopf Method ◽  
The Stability

This paper presents an innovative stability analysis and design approach for time-domain impedance boundary conditions to simulate noise propagation and radiation from a lined turbomachinery duct in the presence of a mean flow. A control-oriented model is developed for the stability analysis of the impedance boundary condition by using generalized function at the lining surface. The mean flow effect and sound propagation are considered in the model as well. Then, the numerical stability issue is analyzed by using the Bode plots before stabilized accordingly by employing the phase lead compensator method, which results in a rational transfer function. Finally, the corresponding time-domain implementation is achieved by using the so-called controllable canonical form rather than an inconvenient convolution operation. The performance of the current proposed approach is first validated in an in-duct propagation case by comparing to analytical solutions obtained by employing the Wiener–Hopf method and then demonstrated in a couple of duct acoustic problems with representative turbomachinery setups. The innovative cross-disciplinary nature of the current proposed approach can shed light on impedance problems and is very useful to time-domain acoustic simulations for turbomachinery applications.

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