IETE Technical Review最新文献_第8页

Design and Modeling of Piezoelectric-AlN-based Acoustic Sensor for Sound Pressure Level Measurements 声压级测量用压电铝基声传感器的设计与建模

IF 2.4 4区计算机科学

IETE Technical Review Pub Date : 2023-02-07 DOI: 10.1080/02564602.2023.2169778

W. Ali, Aditi, M. Prasad

{"title":"Design and Modeling of Piezoelectric-AlN-based Acoustic Sensor for Sound Pressure Level Measurements","authors":"W. Ali, Aditi, M. Prasad","doi":"10.1080/02564602.2023.2169778","DOIUrl":"https://doi.org/10.1080/02564602.2023.2169778","url":null,"abstract":"This paper illustrates the design of a piezoelectric acoustic sensor based on AlN to be used for aero-acoustic measurements. A significant prerequisite for such sensors is a large sound pressure level (SPL) and flat frequency response in the auditory band (20 Hz to 20 kHz). That is why this sensor has been designed to measure upto an SPL of 180 dB. The design of the device has been achieved through the MEMS-CAD tool Coventorware. The Si-diaphragm thickness has been optimized for the desired SPL range using Coventorware for three different sizes of the device, namely 1.5 mm × 1.5 mm, 1.75 mm × 1.75 mm and 2 mm × 2 mm. The cavity developed after the diaphragm formation is connected to the exterior environment through a microchannel. The microchannel was designed for low cut-off frequency. The complete frequency response of all the three sensor structures has been determined. Moreover, a comparison has been drawn among the three devices in terms of parameters such as low cut-off frequency, resonance frequency, and sensitivity to find the optimized device size. The low cut-off frequency, resonance frequency, and flat band sensitivity of the optimized device are 35 Hz, 83 kHz, and 170 µV/Pa, respectively. In addition to this, a proposed fabrication process flow of the device has been presented.","PeriodicalId":13252,"journal":{"name":"IETE Technical Review","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45594621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cooperative Secrecy Techniques for Improving Physical Layer Security in NOMA-Based PLC Networks 基于NOMA的PLC网络中提高物理层安全性的协同保密技术

IF 2.4 4区计算机科学

IETE Technical Review Pub Date : 2023-01-31 DOI: 10.1080/02564602.2023.2167741

E. Hassan, A. S. Elsafrawey

引用次数: 0

Performance Analysis of Dolph-Tschebyscheff Array for Different SLL and Array Length 不同SLL和阵列长度下的dolphi - tschebyscheff阵列性能分析

IF 2.4 4区计算机科学

IETE Technical Review Pub Date : 2023-01-24 DOI: 10.1080/02564602.2023.2165179

Maloth Gopal, S. S. Patil, K. P. Ray

{"title":"Performance Analysis of Dolph-Tschebyscheff Array for Different SLL and Array Length","authors":"Maloth Gopal, S. S. Patil, K. P. Ray","doi":"10.1080/02564602.2023.2165179","DOIUrl":"https://doi.org/10.1080/02564602.2023.2165179","url":null,"abstract":"A comprehensive analysis on performance of Dolph-Tschebyscheff distribution for different array length and side lobe levels has been presented in this paper. Dolph-Tschebyscheff array, which is a compromise between binomial and uniform array, produces optimum side lobe level, efficiency, and half power beamwidth, hence, it is referred to as optimum distribution. For a larger number of elements, the Tschebyscheff array demands higher side lobe suppression in order to avoid the abrupt amplitude distribution at the edges that results from more elements and lower side lobe suppression, at the same time, higher side lobe suppression decreases aperture efficiency and gain. These novel analyses have been carried out by computing parameters such as power pattern, first side lobe level, directivity and half power beamwidth. Plots for optimum SLL and critical SLL are derived for a range of array elements, which defines three regions assisting in selection of appropriate number of elements and desired major-to-minor lobe levels for linear/planar array antenna designs. Practical array analysis is proposed by approximating the amplitude of arrays’ end elements, whenever it becomes higher than their adjacent elements.","PeriodicalId":13252,"journal":{"name":"IETE Technical Review","volume":"1 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59216493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reduced Order Based Active Disturbance Rejection Controller Design with Applications 基于降阶自抗扰控制器的设计与应用

IF 2.4 4区计算机科学

IETE Technical Review Pub Date : 2023-01-10 DOI: 10.1080/02564602.2023.2165178

Safiullah, Y. V. Hote

{"title":"Reduced Order Based Active Disturbance Rejection Controller Design with Applications","authors":"Safiullah, Y. V. Hote","doi":"10.1080/02564602.2023.2165178","DOIUrl":"https://doi.org/10.1080/02564602.2023.2165178","url":null,"abstract":"Active disturbance rejection control (ADRC) has emerged as a well-addressed controller design technique in recent years. It is a suitable replacement for the error-based feedback PID controller design approaches. The ADRC constitutes two controller design techniques: linear active disturbance rejection control (LADRC) and generalized active disturbance rejection control (GADRC). The LADRC design approach requires minimal information about the plant, while in the GADRC approach, detailed information about the plant is needed. For higher-order plants, the design of ADRC controllers and extended state observers may be pretty complex and costlier. So, the performance analysis of the higher order plant becomes difficult. Therefore, to make the controller simpler, it is always advantageous to reduce the controller size. This paper proposes reduced order linear active disturbance rejection control (ROLADRC), and reduced order generalized active disturbance rejection control (ROGADRC) techniques instead of full-order LADRC and GADRC approaches. The stability equation method (SEM) and other widespread model order reduction (MOR) methods are utilized to reduce the order of the plant. Further, ROLADRC and ROGADRC are compared with existing control techniques in the literature. The effectiveness of the proposed scheme is tested on the sun tracker system (STS) for position control and power systems for load frequency control (LFC).","PeriodicalId":13252,"journal":{"name":"IETE Technical Review","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48704312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Reliability Issues in State-of-the-Art Microfluidic Biochips: A Survey 最先进的微流控生物芯片的可靠性问题：综述

IF 2.4 4区计算机科学

IETE Technical Review Pub Date : 2023-01-08 DOI: 10.1080/02564602.2022.2158952

Debasis Gountia

引用次数: 1

Projection and Barrier Lyapunov-Based Controller Update Laws in MRAC Structure for Flexible Satellite Launch Vehicles 基于投影和Barrier lyapunov的柔性卫星运载火箭MRAC结构控制器更新律

IF 2.4 4区计算机科学

IETE Technical Review Pub Date : 2023-01-05 DOI: 10.1080/02564602.2022.2162453

Asha P. Nair, N. Selvaganesan, V. Lalithambika

{"title":"Projection and Barrier Lyapunov-Based Controller Update Laws in MRAC Structure for Flexible Satellite Launch Vehicles","authors":"Asha P. Nair, N. Selvaganesan, V. Lalithambika","doi":"10.1080/02564602.2022.2162453","DOIUrl":"https://doi.org/10.1080/02564602.2022.2162453","url":null,"abstract":"This paper investigates adaptive flight control design strategies which are robust to a wide range of both parametric and non-parametric uncertainties for a highly non-linear, time-varying and under-actuated launch vehicle system. In general, scheduled PID controllers are designed for the rigid body dynamics of the launch vehicle and structural filters/compensators are used to stabilize underactuated dynamics such as slosh and flexibility. In this work, two stable Lyapunov-based adaptive controllers are designed with full-state feedback. In the first controller, adapted gains are constrained to be within the limits defined by the user using a rectangular projection operator. In the second controller, tracking error is also constrained using a barrier Lyapunov function. States of the under-actuated dynamics and rigid body dynamics are estimated from the noisy attitude and attitude rate measurements using an extended Kalman filter. Tracking and regulation control studies are conducted to show the efficiency of the proposed controller update laws using different command signals.","PeriodicalId":13252,"journal":{"name":"IETE Technical Review","volume":"40 1","pages":"710 - 724"},"PeriodicalIF":2.4,"publicationDate":"2023-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46339506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Golden List of Reviewers for the year 2022-IETE Technical Review 2020年iete技术评审金名单

IF 2.4 4区计算机科学

IETE Technical Review Pub Date : 2023-01-02 DOI: 10.1080/02564602.2023.2187978

Anupma Sharma, Arjun Yadav, A. Acharya, Arpan Desai, A. Upadhyay, Fazel Sharifi, Feng Ling, Fernando H Silveira

引用次数: 0

FORM — IV (See Rule 8 of the PRB Act) 表格- IV(见《企业法》第8条)

IF 2.4 4区计算机科学

IETE Technical Review Pub Date : 2023-01-02 DOI: 10.1080/02564602.2023.2187979

引用次数: 0

ChatGPT is Not What You Think It Is ChatGPT不是你想象的那样

IF 2.4 4区计算机科学

IETE Technical Review Pub Date : 2023-01-02 DOI: 10.1080/02564602.2023.2187976

Mamidala Jagadesh Kumar

引用次数: 1

Call for Nominations Main Awards 主要奖项提名征集

IF 2.4 4区计算机科学

IETE Technical Review Pub Date : 2023-01-02 DOI: 10.1080/02564602.2023.2187977

引用次数: 0