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799 articles for “linearly”
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Modeling, Analysis and LQR Control of an EV Differential using IPMSM
Abstract: Recently, the mechanical differential (MD) of vehicle has been replaced by electronic differential (ED) by means of electric motor. Electronic differential ensures dynamic and robust control of the vehicle behavior. The ED has been designed for an electrical vehicle (EV) based on IPMSM due to its some inherent advantageous features. The design of speed controller of an IPMSM mainly depends on its mathematical model. The mathematical model based speed controller …
Published in Journal of Control & Instrumentation · Vol. 7, Issue 2, 2016 · pp. 23–34 Read article
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Adaptive Generalized Predictive Control of Anti Lock Braking System
Abstract: Anti lock braking system (ABS) is one of the most important topics in the field of car stability control system design. Among the various control strategies which are common in designing control systems, model predictive control (MPC) received great attention in industries. Independent generalized predictive control (IMGPC) is a new and effective predictive control strategy than can be easily implement on linear system. In this paper a novel adaptive control …
Published in Journal of Control & Instrumentation · Vol. 6, Issue 3, 2015 · pp. 1–12 Read article
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Comparison of Tuning Methods of PID Controllers of Two Conical Tank System of Interacting Type
Abstract: The rapid increasing complexity of modern control systems has accentuated the idea of applying new modern approaches in order to solve design problems for various control engineering applications. This paper deals with the tuning of PID controllers for complex nonlinear process of two interacting Conical Tank Systems. Conical tanks play vital role in leaching extractions in pharmaceutical and chemical industries, as well as in food processing industry. It is a …
Published in Journal of Control & Instrumentation · Vol. 5, Issue 3, 2014 · pp. 8–14 Read article
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Auto Tuning of PI Controller using Fuzzy Logic for the Spherical Tank System and its Real Time Implementation
Abstract: In this paper, Auto Tuning of PI controller using fuzzy logic is developed to improve the performance of the spherical tank process. A real time implementation of proposed controller for a spherical tank to control liquid level is studied. Control of liquid level in a spherical tank is highly non linear due to variation in the area of cross section of level system with change in shape. System identification of …
Published in Journal of Control & Instrumentation · Vol. 5, Issue 3, 2014 · pp. 28–37 Read article
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LQR based Optimal Verses Classical PID Controller for the Longitudinal Dynamics of an Aircraft
Abstract: The main objective of the present work is to investigate the design aspect of optimal controller for the pitch control of an aircraft. In this paper Linear Quadratic Regulator (LQR) for optimal stability analysis of closed loop attitude control system of an aircraft is presented. The result of proposed controller is compared with classical proportional integral derivative (PID) controller. It is observed that the optimal control technique outperforms the PID …
Published in Journal of Control & Instrumentation · Vol. 4, Issue 2, 2013 · pp. 15–23 Read article
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MODELING AND IMPLEMENTATION OF LABVIEW BASED NONLINEAR PICONTROLLER FOR A CONICAL TANK
Abstract: The control of liquid level in tank is a basic problem in process industries. The conical tank level process isconsidered to be a non-linear process. The control of conical tank is presenting a challenging problem dueto its non-linearity. The modeling aspect of conical tank is discussed in this paper. The piecewise response ofthe system is studied and the gain and time constants for the different regions were tabulated. A structure …
Published in Journal of Control & Instrumentation · Vol. 1, Issue 1-2-3, 2011 · pp. 34–49 Read article
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Speed Control of Electric Drives Using Soft Computing Techniques
Abstract: The speed control of electric drives is a challenging engineering problem. The direct torque control (DTC)method is characterized by its simple implementation and a fast dynamic response. Soft computingtechniques, viz., fuzzy control are ways for controlling a system without the need of mathematical model. Ituses the experience of people’s knowledge to form its control rule base. There are two techniques to controlthe speed of electrical drives. The traditional technique uses …
Published in Journal of Control & Instrumentation · Vol. 1, Issue 1-2-3, 2011 · pp. 50–58 Read article
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Numerical Methods of Optimization: A Review
Abstract: Optimization is an approach to finding the best result under given conditions. Several difficulties are occurred with the optimization of large scale problem. This paper is a review of numerical method of optimization techniques. Here discussed about different methods of numerical optimization for linear and nonlinear constrained and unconstrained system problem. Here we discussed about linear programing, integer programing, quadratic programing and nonlinear programing. The review is genera in nature, …
Published in Journal of Control & Instrumentation · Vol. 12, Issue 2, 2021 · pp. 19–25 Read article
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Stress and Deformation Analysis of Rotating Cylindrical Pressure Vessel of Functionally Graded Material Modeled by Mori-Tanaka Scheme
Abstract: The present study deals with the linear elastic analysis of rotating cylindrical pressure vessels. The vessels are made up of one directional functionally graded material (FGM), in which mechanical and physical properties are varying along the radial direction. The analysis is carried out using finite element method which is based on the principle of stationary total potential (PSTP). Material properties are graded according to the Mori-Tanaka distribution law and ceramic-metal …
Published in Journal of Experimental & Applied Mechanics · Vol. 8, Issue 3, 2017 · pp. 1–7 Read article
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Thermo-mechanical Analysis of Orthotropic plate under Sinusoidally Distributed Thermal load by using Trigonometric shear Deformation Theory (TSDT)
Abstract: For the thermal analysis of simply supported square and rectangular plates applied to sinusoidaldistributed linear thermal load throughout the plate thickness and in combination with sinusoidaldistributed transverse mechanical loading, a trigonometric shear deformation theory is proposed. Inthis work, a sinusoidal function in terms of thickness coordinates is being used in the displacement fieldin conjunction with the transverse shear deformation effect. The normal and shear stress can bedetermined by using the …
Published in Journal of Experimental & Applied Mechanics · Vol. 12, Issue 3, 2021 · pp. 10–33 Read article
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FDTD-based Time Domain Analysis of CMOS Gate Driven Interconnects
Abstract: Accurate time domain analysis of CMOS gate driven interconnects is important for the design and analysis of high performance VLSI systems. Conventionally, CMOS driver is approximated as a constant resistance instead of non-linear and time-varying MOS resistance, which causes inaccurate modeling of CMOS driver. This paper presents a new method for FDTD-based transient analysis of CMOS gate driven interconnect line using a generalized model. The generalized model of CMOS inverter …
Published in Journal of Electronic Design Technology · Vol. 5, Issue 1, 2014 · pp. 16–21 Read article
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Genetic Algorithm Based Simulation for IEEE-30 Bus System Multi-Objective Power Flow Design
Abstract: In order to control and orchestrate profitable power structures, OPF algorithms are a critical area of research. Perfect Power Flow is utilised to keep objective work to a minimum. This goal restriction might be a single goal or a set of goals. In this work, we used a perfect energy stream to reduce the cost of fuel while meeting constraints such as generator tension and electrical yields, which are used …
Published in Journal of Electronic Design Technology · Vol. 12, Issue 3, 2021 · pp. 9–15 Read article
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Landslide Risk Assessment in Kodagu District, Karnataka: A Case Study
Abstract: AbstractIn this study, an attempt has been made to assess the landslide risk zones using a GIS based weighted linear overlay method with Satty’s analytical hierarchical process to maintain consistency for assigning rank and weight for following factors includes geology, geomorphology, rainfall, soil, road density, drainage density, and topographic triggering factors such as slope and aspects are taken as input for assessment of landslide risk.Thus the technique used in landslide …
Published in Journal of Geotechnical Engineering · Vol. 4, Issue 3, 2017 · pp. 19–34 Read article
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Numerical Simulation of Hybrid GSA Based Optimal Power Flow for Multi Objective Optimization Strategy
Abstract: Restricted nonlinear optimization in electric power systems engineering is a topic of Optimal Power Flow (OPF) that has been extensively investigated. It has been a long and remarkable history for the OPF, which was founded in the 1960s, of research and publication. Newcomers to OPF research face a challenging undertaking since there is so much information available and because OPF's popularity within the electric power systems community has prompted authors …
Published in Journal of Instrumentation Technology & Innovations · Vol. 11, Issue 3, 2021 · pp. 24–32 Read article
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Advancements in Robotic Arm Design: Analyzing Gripping and Grasping Mechanisms
Abstract: The main objective of this project is to design and build a child-sized prosthetic hand that can passively adapt to a grasp. The ability of the fingers to adapt to the shape of an object grasped in the hand is known as an adaptive grip. Four fingers and the thumb flex inward and individually adjust to the contour of the object being grabbed as the hand closes around it. When …
Published in Journal of Instrumentation Technology & Innovations · Vol. 13, Issue 1, 2023 · pp. 09–16 Read article
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Optimization of Control Parameters Based on Genetic Algorithm Technique for Integrated Electrohydraulic Servo Actuator System
Abstract: Electrohydraulic servo systems have been used in industry in a wide number of applications. Its dynamics are complex and highly nonlinear, these features significantly add uncertainty to the controller design procedure. Therefore, it is a demanding task to obtain a precise mathematical model of controlled servo systems. The present paper presents the development of a detailed non-linear mathematical model of the ISA and a computer simulation program using MATLAB/SIMULINK package. …
Published in Journal of Mechatronics and Automation · Vol. 6, Issue 3, 2019 · pp. 24–41 Read article
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Implementation of CDM Based PID Controller for a Stable and Double Integrating Process
Abstract: In this paper an attempt has been made to design a PID controller for a double integrating process and shell and tube heat exchanger process based on coefficient diagram method (CDM). Ball and beam system (Linear process) and the heat exchanger systems (Non-linear process) are widely used as a bench mark control setup for evaluating various control strategies. Many PID controller designs are developed for stable system, however it is …
Published in Journal of Mechatronics and Automation · Vol. 2, Issue 2, 2015 · pp. 15–22 Read article
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A Review On A Compact Dual Polarized Antenna Array
Abstract: A compact dual-polarized antenna array for low-cost millimeter-wave (mm Wave) applications is proposed in this article. Utilizing a patch antenna with two orthogonal feeds positioned horizontally and vertically, a dual linear polarization antenna can be created. Two ports—a vertical port and a horizontal port—make up the suggested design. The antenna produces horizontal polarization by stimulating the horizontal port. The antenna produces vertical polarization by stimulating vertical port. With the higher …
Published in Journal of Microwave Engineering and Technologies · Vol. 9, Issue 2, 2022 · pp. 46–50 Read article
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Two-dimensional Finite Element Analysis of Bolted Flanged Joints
Abstract: A 2D axisymmetric finite element analysis of flanges has been carried out using ANSYS 7.1 version. The analysis consider gasket as a rigid material for contact analysis and the others where the gasket has been considered as a gasket element. The non-linear behaviour with two unloading curves was used to predict the non-linear behaviour. This paper attempts to study and compare the contact pressure, gap, gasket stress and gasket total …
Published in Journal of Materials & Metallurgical Engineering · Vol. 6, Issue 1, 2016 · pp. 60–65 Read article
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BMI and Nutritional Level Classification using Bioelectrical Impedance Analysis
Abstract: AbstractThis paper is based on the study of improve the cutoff point and nutritional classification and status of overweight/obesity based on the EMI. Study was conduct on more than 1000 individual on both genders age between 18 and 60 years. The subjects underwent measurement of weight and height and bioelectrical impedance analysis. Instrumentation for the measurement of bioimpedance is simple, cost effective for mass production and is easy to use. …
Published in Journal of Microelectronics and Solid State Devices · Vol. 6, Issue 3, 2019 · pp. 18–27 Read article