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This paper proposes a unified approach for robust controller (RC) design for Electro-magnetic Levitation System (EMLS) in delta domain. Dynamic systems modelling with delta operator provides a unified framework in rapprochement between discrete-time dynamic models and its continuous counterpart at fast sampling. This property is utilised to design different classical control schemes such as PI, PD...
This paper presents a design of multi-objective controller for a two input two output interacting Coupled Tank System (CTS) and its real time implementation. The multi-objective control has been achieved by satisfying time domain objective like pole placement and frequency domain objective like H-infinity condition. This multi-objective control has been formulated using Linear Matrix Inequality (LMI)...
In this paper a new method of Variable Structure Control (VSC) using Multiquadric Radial Basis Function Neural Network (MQRBFNN) identifier is proposed to achieve chaos synchronization of underactuated gyroscope (master-slave) system with known and unknown system parameters. Gyroscopes are nonlinear underactuated systems which show chaotic motions. Chaos control is achieved by designing three control...
Control techniques over the decades have evolved from the various aspects of Model-Based Control (MBC) to Data Driven Control (DDC). In stark contrast to the model based paradigm which is targeted at addressing the fundamental physics driving the system and intends to freely determine the process transfer function. The data-driven approach instead connotes to ascertaining the process parameters of...
A self-tuning fuzzy PID controller (STFPID) is developed to enhance the performance of an inverted pendulum in crane mode operation. Efficacy of STFPID is justified against the performance of a conventional PID and fuzzy PID controller (FPID). Inverted pendulum is a typical example of a nonlinear system and its free hanging mode is a well accepted form to realize a usual crane operation. Here, STFPID...
This paper presents a mixed sensitivity based design approach of H-infinity controller for a dc servo motor system. Frequency dependent suitable weight functions for sensitivity and complementary sensitivity transfer functionare chosen to design the controller. Synthesis of H-infinity controller is performedusing Robust Control Toolbox in MATLAB. The input output data samplesfor a laboratory based...
Both H∞ optimization techniques and eigenstructure assignment have their unique significances in control engineering. The first one is an effective method to ensure the robust stability of the closed loop system whereas the second one is very useful in shaping the transient response of the closed loop system by placing the eigenvalues and eigenvectors in the desired locations. Hence, to design a controller...
The study is a metonym for designing a Fuzzy Logic Controller (FLC) using various types of membership functions (MFs) and variable rule-base (RB) for a DC servo speed control application. FLCs are more useful in comparison to their crisp counterparts for attaining a desired speed in a closed loop process. Based on prior experience, the control methodology i.e. RB of a FLC is designed which comprises...
In this paper, the design and development of an Unmanned Aerial Vehicle suitable for indoor navigation and an innovative human-computer interaction interface is presented. More specifically, details pertaining to hardware design and software development of the entire UAV are presented. It should be highlighted that the UAV is developed from scratch rather than purchased off the shelf. By virtue of...
Internet of things represents a groundbreaking vision of technological, economic and social significance. This paper is designed to help technology enthusiasts navigate the dialogue surrounding the same, be well versed in IoT and understand its potential to change everything we know to be true today. In this new era of technology, Internet of Things (IoT) has the true potential to make computing ubiquitous...
Total polyphenol contents in tea leaves estimation have been presented by the near infrared reflectance (NIR) spectroscopy. In order to calibrate the regression model on NIR tea spectra partial least squares (PLS) algorithm was used. The number of PLS factors and the choice of preprocessing methods were optimized simultaneously by leave-one-sample out cross-validation during the model calibration...
This article introduces a new approach for identification of tea sample using pulse voltammetry method in an electronic tongue based instrumentation. The classifier system consists of a principle component (PCA) based feature extraction module followed by support vector machine based discrimination. The PCA score of unknown tea sample is undergone through different pair-wise (binary) classification...
Modeling of ECG signal is of much importance as the outcome of it is needed for compression of ECG waveform for remote transmission by wireless link, reconstruction of both normal and abnormal ECG waveform without patient, studying the performance of cardiovascular system or heart. The present work proposes a novel method to design a model of heart according to functions of electrical activity of...
Various types of ADCs are available in the market with their relative strengths and constraints. Pipeline ADC is the latest inclusion in this list. It is very high speed and high resolution in nature. To make the conversion error free, a digital error correction technique has been used which is termed as 1.5 bits/stage. This design is a very useful technique to eliminate error due to comparator offset...
In this paper a Photoplethysmography (PPG) based noise robust real time heart rate measurement technique is proposed. It has been developed using Arduino Uno board based on 8-bit AVR core microcontroller and having 16 MHz clock frequency. The basic idea of the proposed work is to extract the periodic PPG signal contaminated by non-periodic noise and atrifact. The algorithm is based on short term autocorrelation...
Near Infrared (NIR) spectroscopy combined with chemometrics technique has become a strongest tool for qualitative as well as quantitative assessment in food industry. In this paper, NIR spectroscopy technique is used to discriminate different turmeric brands available at the local market along with a homemade turmeric powder sample. NIR spectroscopic data of turmeric were subjected to different data...
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