{"title":"Stabilization of Cart Inverted Pendulum System by 2-rate controllers based on PSO technique","authors":"T. Saha, N. Murmu, S. Chakraborty, M. Maitra","doi":"10.1109/ASPCON49795.2020.9276729","DOIUrl":"https://doi.org/10.1109/ASPCON49795.2020.9276729","url":null,"abstract":"This paper proposes a PSO (Particle Swarm Optimization) based tuning rule for 2-rate controllers for the stabilization of cart-inverted pendulum system. In [1] the 2-Rate controller, a special subset of 2-periodic controller, has been designed to achieve poles as well as loop-zero placement leading to an improved gain margin (GM) as compared to its LTI counterpart. In the work of [2], the 2-Rate compensation technique was employed to stabilize the cart inverted pendulum system. However, the controller design approach was based on trial and error method and the GM of the overall system depends on the choice of controller poles and loop-zeros. In order to formalize this problem of selecting the proper locations of the controller poles and loop-zeros, this paper proposes a PSO based approach. The objective is to have an efficient and effective search by a group of particles in the solution space to find out the optimal locations of the controller poles and loop-zeros that yield satisfactory loop robustness.","PeriodicalId":193814,"journal":{"name":"2020 IEEE Applied Signal Processing Conference (ASPCON)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121371054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Morphological Filter Aided GMM Technique for Lung Nodule Detection","authors":"A. Halder, S. Chatterjee, D. Dey","doi":"10.1109/ASPCON49795.2020.9276715","DOIUrl":"https://doi.org/10.1109/ASPCON49795.2020.9276715","url":null,"abstract":"Lung cancer is one of the deadliest human disorders in all over the world. Early stage detection and identification of lung nodules from widely used High Resolution Computed Tomography (HRCT) images, helps in prevention of the disease. This paper is aimed to develop an automated computer-aided lung nodule detection system from HRCT images to provide a reliable second opinion to the radiologist and expert for further treatment. In this work a morphological filter aided Gaussian Mixture Model (GMM) is introduced for nodule segmentation and candidate detection. Support Vector Machine (SVM) with 10-fold cross validation technique is employed for nodule detection using LIDC/IDRI dataset. Finally, the reported work has detected the lung nodules with an overall sensitivity, specificity and accuracy of 89.77%, 86.92% and 88.24% respectively.","PeriodicalId":193814,"journal":{"name":"2020 IEEE Applied Signal Processing Conference (ASPCON)","volume":"173 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126829484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Incremental Conductance based Adaptive Poleplacement MPPT Controller Design for Solar Photo Voltaic System","authors":"Jagadeshwar Maddikari, D. Das","doi":"10.1109/ASPCON49795.2020.9276661","DOIUrl":"https://doi.org/10.1109/ASPCON49795.2020.9276661","url":null,"abstract":"The maximum power that could be extracted from the solar panel is necessary to improve the efficiency of a photo voltaic (PV) system. At every changing environmental condition, there will be a certain voltage (Vmpp) at which solar panel delivers maximum power. This voltage should be tracked online accurately, so that the solar panel could be operated at maximum efficiency. This paper presents an effective way to track this voltage accurately. As the solar irradiance changes, the power-voltage (P-V) characteristics of the solar panel also varies. In this paper, the Vmpp is found using incremental conductance method. A boost converter is used to operate the solar panel at Vmpp. The system is dynamic in nature. An auto tuned poleplacement controller is proposed to implement the control action effectively. The controller gains are adjusted online depending on the changes in the system parameters.","PeriodicalId":193814,"journal":{"name":"2020 IEEE Applied Signal Processing Conference (ASPCON)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131633344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An Optimized Fractional-Order PID (FOPID) Controller for a Non-Linear Conical Tank Level Process","authors":"Mary Ann George, D. Kamath, I. Thirunavukkarasu","doi":"10.1109/ASPCON49795.2020.9276670","DOIUrl":"https://doi.org/10.1109/ASPCON49795.2020.9276670","url":null,"abstract":"This work discusses the design of a non-integer-order PID controller for a non-linear conical tank liquid level process using Nelder-Mead (NM) algorithm and compares its performance with Particle Swarm Optimization (PSO) and Genetic Algorithm (GA) based controllers. The paper presents the energy utilization of the actuator and compare its performance using both integer-order PID (IOPID) and fractional-order PID (FOPID) controllers. The conical tank consists of four operating regions with a height of 7 cm for each region. A first-order plus dead time (FOPDT) model of the conical tank process for a region between (14-21) cm is considered in this work, which is identified using the two-point method. The servo and regulatory responses of the conical tank system with IOPID and FOPID controllers are presented and performance indices are evaluated and compared. Both simulation and experimental results show that Nelder-Mead (NM) optimized FOPID controller has a better set-point tracking and controller response compared to the classical IOPID controller, PSO tuned FOPID, and GA tuned FOPID.","PeriodicalId":193814,"journal":{"name":"2020 IEEE Applied Signal Processing Conference (ASPCON)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114075618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Multiple Objective Modelling by Forming Dynamic Clusters of Peak Loads and Distributed Generations for Energy Management in Grid Connected Mode","authors":"N. Manna, Arindam Kumar Sil","doi":"10.1109/ASPCON49795.2020.9276667","DOIUrl":"https://doi.org/10.1109/ASPCON49795.2020.9276667","url":null,"abstract":"Implementation of microgrid formation reflects proper incorporation and organized control of distributed generations in distribution system. Unlike the conventional ways of energy management by multiple microgrid in Grid connected mode, this paper proposed an idea by forming temporary clusters following the loads when they are at their peak and supplying some of the peaks by Distributed generators (DGs) installed with the loads inside the clusters. For implementing this, k-means algorithm is used to make a number of clusters consist of loads and within those clusters probable DGs are marked. Multiple objective optimization technique, Nondominated Sorting Genetic Algorithm-II (NSGA-II) has been used to determine the trade-off of feasible sharing by DGs, defined within the clusters. For decision making from the trade-off solutions a fuzzy based method have been used. The work in this paper has been done in hourly basis for a whole day by running simulations in OpenDSS from MATLAB and also system improvements has been observed.","PeriodicalId":193814,"journal":{"name":"2020 IEEE Applied Signal Processing Conference (ASPCON)","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115746892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Removal of Noises from an ECG Signal Using an Adaptive S-Median Thresholding Technique","authors":"Anusaka Gon, Atin Mukherjee","doi":"10.1109/ASPCON49795.2020.9276706","DOIUrl":"https://doi.org/10.1109/ASPCON49795.2020.9276706","url":null,"abstract":"The proposed work describes the process of eliminating the real-time noises that gets added during an electrocardiogram (ECG) recording. The real-time noises were taken from MIT-BIH noise stress database and added to clean ECG records, taken from MIT-BIH arrhythmia database. The noisy ECG signal is decomposed using discrete wavelet transform (DWT) algorithm. The signal decomposition is carried out by selecting the mother wavelets that looks similar in shape to an ECG signal. The Mean Square Error (MSE) between the mother wavelet and the clean ECG signal is calculated to choose the wavelet that gives the least MSE. The existing S-median threshold technique is made adaptive in this paper, by opting for threshold values that gives the lowest MSE with respect to cleaner levels. The proposed method is flexible to any decomposition levels and is applicable to both individual and composite noisy signals. The noise-free levels are retrieved back using soft thresholding. The proposed technique is evaluated on two different noise levels to verify its effectiveness. The comparison is carried out with existing thresholding techniques and the proposed method shows highest SNR improvement and lowest MSE values among others. The simulations are performed in Matlab and the time domain results are included to show the removal of unwanted noise with preservation of the important ECG features and its baseline.","PeriodicalId":193814,"journal":{"name":"2020 IEEE Applied Signal Processing Conference (ASPCON)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128129847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Photoplethysmogram Signal Quality Evaluation by Unsupervised Learning Approach","authors":"M. S. Roy, Rajarshi Gupta, K. D. Sharma","doi":"10.1109/ASPCON49795.2020.9276733","DOIUrl":"https://doi.org/10.1109/ASPCON49795.2020.9276733","url":null,"abstract":"Photoplethysmography (PPG) is gradually becoming popular tool for cardiovascular and respiratory function monitoring under ambulatory condition. However, these measurements are prone to motion artifact (MA) corruption, and hence, signal quality assessment (SQA) is essential before computerized analysis. The published research on PPG SQA, mostly utilizing supervised learning approaches, suffer from the universality of feature selection against PPG morphology variability. Secondly, beat detection from the MA corrupted is a challenging task and partly limits the success of SQA utilizing beat segmenting approaches. The present research describes an unsupervised learning approach for identification of ‘clean’, ‘partly clean’ and ‘corrupted’ segments in the MA contaminated PPG data. Few entropy features and some signal complexity related features calculated by statistical methods in a 5 s window were fed to a self-organizing map (SOM) for direct quality assessment of PPG data. The number of input node to the SOM was 7 and the output was connected to a square matrix consisting of 25 nodes. The multiclass classification model achieved 94.10%, 89.27%, 92.67% accuracy score for the three classes respectively on 200 min of PPG data collected from 30 healthy and CVD human volunteers under mild to high level of hand movement. The model achieved better result than recently published work utilizing non-segmenting approach based PPG SQA.","PeriodicalId":193814,"journal":{"name":"2020 IEEE Applied Signal Processing Conference (ASPCON)","volume":"2016 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127505868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Suvaditya Majumdar, S. Chattopadhyay, Suman Roy Ghatak, Vaishna Biswas
{"title":"Throughput and Error Function Joint optimization for CSS Based Field Area Network under Various Fading Environments","authors":"Suvaditya Majumdar, S. Chattopadhyay, Suman Roy Ghatak, Vaishna Biswas","doi":"10.1109/ASPCON49795.2020.9276663","DOIUrl":"https://doi.org/10.1109/ASPCON49795.2020.9276663","url":null,"abstract":"This work focuses on the application of Cooperative Spectrum Sensing (CSS) in a Field Area Network (FAN), such as a university campus, operating in a Cognitive Radio (CR) environment. It analyzes the unified performance of Energy Detection (ED) of Spectrum Sensing (SS) for generalized fading channels in Cognitive Radios (CRs). The primary objective of this work is to analyze the effects of large and small scale fading channels in CSS. Secondly, the effect of different fading channels on channel throughput and global error function is observed for different values of N in N-out-of-K-rule, where N and K represent selected Secondary Users and total number of Secondary Users respectively. Thirdly, the false alarm and miss-detection functions are evaluated for different values of N and K under various fading environments to choose an optimum value of N for the proposed rule so that it can be successfully implemented in a FAN. Finally, the performance of the proposed model is evaluated and compared with the performances of the models incorporating the existing voting rules, with respect to the number of Secondary Users (SUs) and types of fading channels.","PeriodicalId":193814,"journal":{"name":"2020 IEEE Applied Signal Processing Conference (ASPCON)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131394159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Arghadip Das, Chandrachur Majumder, Debaprasad De, M. K. Naskar
{"title":"An Efficient Multiplier-less Hardware for Hidden Periodicity Detection Using Ramanujan Filter Bank","authors":"Arghadip Das, Chandrachur Majumder, Debaprasad De, M. K. Naskar","doi":"10.1109/ASPCON49795.2020.9276681","DOIUrl":"https://doi.org/10.1109/ASPCON49795.2020.9276681","url":null,"abstract":"This paper presents an efficient multiplier-less architecture of hidden periodicity detector (HPD) using Ramanujan Filter Bank and its implementation on FPGA. The proposed hardware finds usage in many practical applications e.g. finding hidden periodicities in DNA and proteins, detecting absence seizures in the EEG signal, identifying periodic movements of cosmic bodies, etc. The algorithm used for hidden periodicity detection is based on Ramanujan Filter Bank (RFB). The novelty of the present work is in making the first attempt in designing dedicated hardware for hidden periodicity detection. Two different architectures based on RFB have been proposed - a classic architecture and a multiplier-less architecture. These are structurally modeled in Verilog HDL and implemented on Artix 7 FPGA kit. The multiplier-less architecture utilizes fewer hardware resources and is faster than the classic one due to a lower critical path delay. Thus, lesser chip area and higher operating frequency are achieved. The dedicated hardware is shown to be more than 1000 times faster than its software counterpart. An ideal hidden periodicity detector has also been introduced to present an accuracy analysis of the proposed architecture but the analysis is applicable for all kinds of hidden periodicity detectors.","PeriodicalId":193814,"journal":{"name":"2020 IEEE Applied Signal Processing Conference (ASPCON)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133508773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}