A novel design method of large-aperture metalens and investigation of electrical focus-tuning mechanism with phase shifter structures

2018 ◽  
Author(s):  
Ruo-Qian Gao ◽  
Qi Song ◽  
Jin-Bo Gao ◽  
Hai Liu ◽  
Xiao-Yi Wang ◽  
...  
Keyword(s):  
Phase Shifter ◽  
Design Method ◽  
Large Aperture ◽  
Tuning Mechanism ◽  
Novel Design

scholarly journals Lightweight and maintainable rotary-wing UAV frame from configurable design to detailed design

2021 ◽  
Vol 13 (7) ◽  
pp. 168781402110349
Author(s):  
Huiqiang Guo ◽  
Mingzhe Li ◽  
Pengfei Sun ◽  
Changfeng Zhao ◽  
Wenjie Zuo ◽  
...  
Keyword(s):  
Design Method ◽  
Geometric Model ◽  
Optimization Method ◽  
Frame Structure ◽  
Manufacturing Cost ◽  
Detailed Design ◽  
High Manufacturing Cost ◽  
The Military ◽  
Rotary Wing ◽  
Novel Design

Rotary-wing unmanned aerial vehicles (UAVs) are widespread in both the military and civilian applications. However, there are still some problems for the UAV design such as the long design period, high manufacturing cost, and difficulty in maintenance. Therefore, this paper proposes a novel design method to obtain a lightweight and maintainable UAV frame from configurable design to detailed design. First, configurable design is implemented to determine the initial design domain of the UAV frame. Second, topology optimization method based on inertia relief theory is used to transform the initial geometric model into the UAV frame structure. Third, process design is considered to improve the manufacturability and maintainability of the UAV frame. Finally, dynamic drop test is used to validate the crashworthiness of the UAV frame. Therefore, a lightweight UAV frame structure composed of thin-walled parts can be obtained and the design period can be greatly reduced via the proposed method.

Modified Posicast Control Design Method Based on the Parameters of a Fractional Order System

2021 ◽  
Vol 143 (4) ◽  
Author(s):  
Erhan Yumuk ◽  
Müjde Güzelkaya ◽  
İbrahim Eksin
Keyword(s):  
Real Time ◽  
Fractional Order ◽  
Control Method ◽  
Design Method ◽  
Order System ◽  
Half Cycle ◽  
Empirical Formulas ◽  
Real Time System ◽  
Novel Design ◽  
Better Than

Abstract In this study, a novel design method for half-cycle and modified posicast controller structures is proposed for a class of the fractional order systems. In this method, all required design variable values, namely, the input step magnitudes and their application times are obtained as functions of fractional system parameters. Moreover, empirical formulas are obtained for the overshoot values of the compensated system with half-cycle and modified posicast controllers designed utilizing this method. The proposed design methodology has been tested via simulations and ball balancing real-time system. It is observed that the derived formulas are in coherence with outcomes of the simulation and real-time application. Furthermore, the performance of modified posicast controller designed using proposed method is much better than other posicast control method.

Sine-cosine algorithm-based optimization for automatic voltage regulator system

2018 ◽  
Vol 41 (6) ◽  
pp. 1761-1771 ◽  
Author(s):  
Baran Hekimoğlu
Keyword(s):  
Pid Controller ◽  
Design Method ◽  
Voltage Regulator ◽  
Bee Colony ◽  
Automatic Voltage Regulator ◽  
Avr System ◽  
Sine Cosine Algorithm ◽  
Tuning Methods ◽  
Domain Performance ◽  
Novel Design

A novel design method, sine-cosine algorithm (SCA) is presented in this paper to determine optimum proportional-integral-derivative (PID) controller parameters of an automatic voltage regulator (AVR) system. The proposed approach is a simple yet effective algorithm that has balanced exploration and exploitation capabilities to search the solutions space effectively to find the best result. The simplicity of the algorithm provides fast and high-quality tuning of optimum PID controller parameters. The proposed SCA-PID controller is validated by using a time domain performance index. The proposed method was found efficient and robust in improving the transient response of AVR system compared with the PID controllers based on Ziegler-Nichols (ZN), differential evolution (DE), artificial bee colony (ABC) and bio-geography-based optimization (BBO) tuning methods.

A Novel Design Method of Independent Zonal Superconducting Shim Coil

2019 ◽  
Vol 29 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Chaoqun Niu ◽  
Xuchen Zhu ◽  
Qiuliang Wang ◽  
Yi Li ◽  
Fangfang Tang ◽  
...  
Keyword(s):  
Design Method ◽  
Novel Design ◽  
Shim Coil

scholarly journals UNBALANCED METAMATERIALS APPLIED TO PHASE SHIFTER: DEDICATED DESIGN METHOD AND APPLICATION IN C-BAND

2019 ◽  
Vol 93 ◽  
pp. 1-17
Author(s):  
Jonathan Vivos ◽  
Thomas Crepin ◽  
Michel-François Foulon ◽  
Jerome Sokoloff
Keyword(s):  
Phase Shifter ◽  
Design Method

scholarly journals A Novel Design Method for Resonance Network Parameters of Bi-directional CLLLC Resonance Converter

2020 ◽  
Vol 446 ◽  
pp. 042044
Author(s):  
Fangzhou Hu ◽  
Chengchao Qi ◽  
Xiaohang Yu ◽  
Hongtao Zhao ◽  
Anbo Liu
Keyword(s):  
Design Method ◽  
Network Parameters ◽  
Novel Design
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