Search
1961 articles for “out-of-control” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
-
Synthesis and Characterization of pH-Sensitive Poly (N-isopropylacrylamide-co-acrylic Acid) Hydrogels for Controlled Release of Doxorubicin
Abstract: pH-responsive polymeric hydrogels have attracted significant attention as intelligent biomaterials for site-specific and controlled drug delivery in cancer therapy due to their ability to respond to the acidic tumor microenvironment. In the present study, poly (N-isopropylacrylamide-co-acrylic acid) [P(NIPAM-co-AAc)] hydrogels were synthesized via free radical copolymerization and systematically characterized to evaluate their suitability for controlled delivery of doxorubicin, a widely used chemotherapeutic agent. The copolymer hydrogels were prepared using N-isopropylacrylamide and …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 449–458 Read article
-
An Overview Mechatronics Systems Design of Modelica-Based Model Predictive Control Strategies for CO₂ Heat Pump Systems
Abstract: The growing adoption of renewable energy technologies poses challenges to energy supply stability, necessitating increased flexibility in energy demand. This paper introduces a Modelica-based Model Predictive Control (MPC) strategy aimed at keeping the supply water temperature within the range of 55°C to 75°C while minimizing energy consumption and electricity expenses throughout a year. A comprehensive, high-fidelity model representing a school building in Oslo, Norway, was developed using Modelica and exported …
Published in Journal of Mechatronics and Automation · Vol. 13, Issue 1, 2026 · pp. 15–27 Read article
-
Recent Trends in Fluid Mechanics with Emphasis on Aeroacoustics and Flow-Induced Noise Control
Abstract: Fluid mechanics continues to evolve rapidly due to increasing demands in aerospace, automotive, energy, and environmental engineering applications. Recent trends in this field highlight significant advancements in both theoretical understanding and practical implementations, particularly in complex flow phenomena. Among these, aeroacoustics and flow-induced noise control have emerged as critical research areas due to their direct impact on system performance, efficiency, and environmental sustainability. Aeroacoustics deals with the generation, propagation, and …
Published in Recent Trends in Fluid Mechanics · Vol. 13, Issue 1, 2026 · pp. 32–38 Read article
-
Design and Control of Ethyl Acetate Production Process
Abstract: In this study, the design and control of ethyl acetate production plant has been investigated. The proposed design consists of a continuous-stirred tank reactor and two distillation columns. Ethanol reacts with acetic acid and gives ethyl acetate and water. Plant-wide operability and control of the entire process plant with decentralized controllers is explained by doing both steady state and dynamic simulations. Tray temperature control loop performance is tested for the …
Published in Emerging Trends in Chemical Engineering · Vol. 2, Issue 1, 2015 · pp. 9–20 Read article
-
Control Strategy for Wind Turbine Operation under Wind Variations
Abstract: Wind energy is found to be viable energy source out of all nonconventional energy resources. Wind turbine, a major component of wind energy conversion system, is used to capture the kinetic energy associated with the wind for driving the generator. Output of wind turbines varies in accordance with the wind variations. Therefore, in order to control the power output wind turbine employed needs some control during such variations. As observed …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 7, Issue 2, 2016 · pp. 45–55 Read article
-
Comparison of Mamdani and Sugeno Fuzzy Inference Systems for a Three Tank Level Control System
Abstract: The level control of a three tank system has become a research focus due to the nonlinear process and multivariables. It is well known that the conventional controllers are suitable to control linear processes and their design is based on the exact mathematical model. In this paper, we developed a mathematical model for a three tank system and proposed an effective controller design based on fuzzy logic by which more …
Published in Journal of Control & Instrumentation · Vol. 5, Issue 2, 2014 · pp. 14–20 Read article
-
Design and Implementation of Two Tank Level Control System
Abstract: This paper designs the electrically based solenoid control valve to controls the level, based on the error voltage from the MATLAB (Matrix Laboratory) control algorithm. Various control algorithms are derived for two tank system. Those algorithms are derived only on simulation data. Most of algorithms are coded using microcontroller. This proposed system is a live model of two tank level system controlled through MATLAB m-code. It consists of components such …
Published in Journal of Control & Instrumentation · Vol. 4, Issue 1, 2013 · pp. 11–15 Read article
-
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
-
Microcontroller-based Temperature Controlling and Monitoring System with Graphical user Interface
Abstract: Temperature is one of the most important process variables in the process control. Process control is an efficient expression of improving the operation of a process, the productivity of a plant, increase flexibility and the quality of products. The accurate measurement of temperature is not an easy task. The aim of this work is to develop a low-cost and flexible temperature controller for controlling and monitoring the temperature. The purpose …
Published in Journal of Control & Instrumentation · Vol. 4, Issue 3, 2013 · pp. 7–16 Read article
-
Approximation Based Optimal Control Design Strategy for the Magnetic Levitation System
Abstract: Abstract: This paper presents the stabilization and trajectory tracking of magnetic levitation system using optimal control technique. The magnetic levitation (Maglev) system is exceedingly unstable and nonlinear system. The magnetic levitation has been a desirous area of exploration for utilization, especially in the scope of automotive where low losses due to friction and low energy consumption are an important idea. The (Maglev) system has become a large effective technology in …
Published in Journal of Electronic Design Technology · Vol. 10, Issue 1, 2019 · pp. 8–14 Read article
-
Design of Voltage Controlled Oscillator using GDPK 90nm CMOS Technology
Abstract: In the recent decade, there has been a major revolution in communication systems and devices. Many communication devices required a specific frequency which may range from a few Hz to several GHz by source of voltage. Voltage Control Oscillator (VCO) plays a major role in today’s modern communication system. Voltage Control Oscillator use as basic building block in communication circuits and major use in phase locked loops circuits. Due to …
Published in Journal of Electronic Design Technology · Vol. 13, Issue 1, 2022 · pp. 17–24 Read article
-
Modeling of Patient of Type 1 Diabetes for Blood Glucose Control
Abstract: The recent development in the insulin delivery system is the automatic one. The blood glucose levels are controlled by the feedback loop. The initial success with the simple models in normalizing blood glucose level led to the improvement of the devices including variety of control system. The insulin delivery system to diabetic is a tedious job and doesn’t ensure proper performance and leads to various complications if the delivery of …
Published in Journal of Microelectronics and Solid State Devices · Vol. 3, Issue 1, 2016 · pp. 30–35 Read article
-
Minimization of Steady State Error of DC Motor Drive Using PID Controller
Abstract: As it is the time of advanced technology, machinery implementation is increasing very rapidly. Industries always work with the implemented technology which gives the fast and accurate response of the system. This paper includes the dc motor speed controlling using the PID controller. Close loop control system and electrical drives have the advantageous system for the technology. DC motor is used for getting best and easiest speed and torque control …
Published in Journal of Power Electronics and Power Systems · Vol. 8, Issue 2, 2018 · pp. 25–29 Read article
-
Comparative Study of Torque Ripple Minimization of PMSM using PI and Proportional Resonant (PI-RES) Controller
Abstract: The minimization of speed ripple of the permanent magnet synchronous motors (PMSM) in low speed range becomes a major problem while applying the PMSM to refrigerant system. Earlier, an iterative learning controller was applied in conjunction with the conventional proportional integral (PI) speed controller to minimize the speed ripple. Here, a frequency variable resonance controller is applied in conjunction with the conventional proportional integral speed controller as a PI-RES controller, …
Published in Journal of Power Electronics and Power Systems · Vol. 8, Issue 3, 2018 · pp. 17–23 Read article
-
Design of a Closed Loop Boost Converter with Parametric Variation Analysis of PI Controller for Constant Output Voltage Applications
Abstract: The DC-DC converters have an unregulated input dc voltage and a constant or regulated output dc voltage. Switching DC-DC voltage converters have two elements: A controller and a power stage. The power stage regulates the switching elements and converts input voltage to output voltage. The controller controls the switching operation to regulate the output voltage. The two systems are linked by a feedback loop that compares the actual output voltage …
Published in Journal of Power Electronics and Power Systems · Vol. 6, Issue 3, 2016 · pp. 1–13 Read article
-
Design and Simulation of Discrete Time Optimal Speed Control for an Induction Motor Taking Core Loss and Stray Load Losses into Account
Abstract: Generally, the core loss and stray load loss are neglected in the mathematical model of induction motor (IM) to design the decoupling torque and flux control strategy. In order to precisely control the torque and flux, core loss and stray load loss, which are generally neglected, should be considered in the mathematical model of IM to design the controller. Some of literatures have shown how the detuning can be done …
Published in Journal of Power Electronics and Power Systems · Vol. 4, Issue 3, 2014 · pp. 46–56 Read article
-
Power Market Management and Grid Controls Platforms with Integrating Third Party Owned DER
Abstract: In the deregulated electricity market, many Individual Powers Produces (IPP)/Distributed Energy Resources (DER) compete to sell the power. Grid and power flow controlling is a challenging task. In deregulated scenario many market model, according to that the power-flow control has to be done looking at the Available Transfer Capacity (ATC) in the lines. FACTS controllers are well suited to control the active power by injecting/absorbing the reactive power from the …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 7, Issue 3, 2020 · pp. 24–30 Read article
-
An FPGA-based Controller Design for Servo Actuator Using Xilinx System Generator and HDL Cosimulator
Abstract: This paper aims at designing a Field programmable gate array (FPGA)-based proportional, integral derivative (PID) controller in a servo-actuated control system. In the conventional method of implementing control systems in FPGA, there is no interaction between the controller and the system except for the final stage of implementing control system in the hardware. The proposed methods provide approaches for analyzing the performance of the controller and system in MATLAB simulink …
Published in Journal of VLSI Design Tools and Technology · Vol. 2, Issue 1-2-3, 2012 · pp. 1–6 Read article
-
Load Sharing control Between Wind Energy & Diesel Generator
Abstract: AbstractThe disturbed expansion in energy request has represented a significant issue for the power frameworks security and dependability, and henceforth has happened to central issue. The weaknesses of ordinary wellspring of energy have cleared way for environmentally friendly power sources. The impact of the breeze turbine in the lattice framework concerning the power quality estimations are-the dynamic power, receptive power, variety of voltage, glint, sounds, and electrical conduct of exchanging …
Published in Recent Trends in Fluid Mechanics · Vol. 8, Issue 2, 2021 · pp. 37–47 Read article
-
Design and Implementation of PID Controller for Self Balancing Robot
Abstract: AbstractFor control engineers to study, apply and verify different control methods, inverted pendulum is a very good platform. Nearly 90% of the industries use the concept of inverted pendulum like ship balancing against of sea tide and control of rockets, space ships and landing of aero planes. The simple pendulum is stable while hanging downwards, but the inverted pendulum is a genetically unstable system. To make the inverted pendulum a …
Published in Recent Trends in Sensor Research & Technology · Vol. 5, Issue 2, 2018 · pp. 12–19 Read article