Design of I-PD Controller Based Modified Smith Predictor for Processes With Inverse Response and Time Delay Using Equilibrium Optimizer

IEEE Access, Journal Year: 2023, Volume and Issue: 11, P. 14636 - 14646

Published: Jan. 1, 2023

In the process control industry, it is arduous to some integrating or unstable processes since they involve time delays and have an inverse response. Conventional controllers such as PID cannot provide sufficient performance alone in of these systems. This article proposes a algorithm based on I-PD-based Smith predictor for time-delayed processes. The controller parameters are tuned by using Equilibrium optimizer (EO) algorithm, which presented literature 2020, proposed approach. EO aims determine optimal minimizing error signal multi-objective function ITAE criterion. Thus, that will set-point tracking disturbance rejection most properly can be determined. Simulation studies conducted different structures evaluate method. method compared with from terms tracking, parameter uncertainties, signals, rejection. It seen transient responses response improved

Language: Английский

---

Harmonic Mitigation Using Meta-Heuristic Optimization for Shunt Adaptive Power Filters: A Review

Energies, Journal Year: 2023, Volume and Issue: 16(10), P. 3998 - 3998

Published: May 9, 2023

Shunt Adaptive Power Filter (SAPF) is widely used in the performance of power quality improvement activities supply industry for processing industries or civil sources world today based on its simplicity, transparency, high reliability, efficiency, and their powerful compensating current-providing nature. The PI controller integrated into SAPF operation mechanism works with extra efficiency selecting current to compensate lost generated due harmonics by Kp, Ki parameter values. system operates PWM method bridge rectifier circuits that perform function appropriate current, providing correct compensation amount loss supply. Adjusting reach optimal value different methods a promising popular research direction at present. serves right purpose generate enough pulses excite rectifiers just be compensated commonly adjustment include Ziegler Nichols closed-loop vibration method, P-Q theoretical several other methods. This study conducts comprehensive review literature modern strategies adjusting parameters suite using meta-heuristic optimization method. performs classification according mode adjust control select frequency activate most meet goal improving accordance IEEE 519-2022 standard, leading total harmonic distortion (THD) below 5%. presents detail some algorithms, including applications, mathematical equations, implementation flow charts provides open problems future research. main objective this provide an overview applying algorithms tuning controllers.

Language: Английский

---

The Efficiency of an Optimized PID Controller Based on Ant Colony Algorithm (ACO-PID) for the Position Control of a Multi-articulated System

Journal of Robotics and Control (JRC), Journal Year: 2023, Volume and Issue: 4(3), P. 289 - 298

Published: April 29, 2023

In this article, a robot manipulator is controlled by the PID controller in closed loop system with unit feedback. The difficulty of using parameter tuning, because tuning parameters still use trial and error method to find constants, namely Proportional Gain (Kp), Integral (Ki) Derivative (Kd). case Ant colony Optimization algorithm (ACO) used best gain PID. combinatorial optimization, which utilizes pattern ants search for shortest path from nest place where food located, concept applied minimizing objective function such that has improved performance characteristics. This work uses Matlab Simulink environment, First, after obtaining model, ant determine proper coefficients 𝐾p, 𝐾i, Kd order minimize trajectory errors two joints manipulator. Then, will implement system. According results computer simulations, proposed (ACO-PID) gives good compared classical

Language: Английский

---

Dynamic modeling of hydrogen production from boil-off gas (BOG) at onshore LNG facilities: Technical and socio-economic analysis

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 67, P. 949 - 958

Published: Feb. 28, 2024

Integrating hydrogen (H2) production systems within natural gas (NG) supply chains can support smoothening transition to cleaner energy resources by utilizing existing infrastructures. This work investigates the dynamic conversion of boil-off (BOG) using steam methane reforming (SMR) produce H2 liquified (LNG) process. The study extends beyond technical considerations encompass a socio-economic approach, exploring optimal allocation different monetization techniques (e.g., ammonia and methanol) subject final market price demand data. Dynamic simulation showed an excellent ability address variations in BOG flow, change LNG temperature pressure drop chain, highlighting need for adaptive flowrate process setpoints. productivity yield are dependent on flow rates, carbon ration (S/C) input system. Optimizing reformer is best practice enhanced H2. Allocating approximately 74% produced CO2-free production, remainder methanol via CO2 hydrogenation, achieves annual profitability $1.36 billion. However, when considering variable data over ten years, model proposes flexible both routes, resulting average yearly $6.84 These findings underscore importance integrating interactive approaches exogenous endogenous uncertainties, providing robust strategy against risks. comprehensive approach presented this contributes understanding strategic planning chains, emphasizing adaptability economic viability landscape transition.

Language: Английский

---

Exploring the stability and dynamic responses of dual-stage series ORC using LNG cold energy for sustainable power generation

Applied Energy, Journal Year: 2024, Volume and Issue: 372, P. 123735 - 123735

Published: June 28, 2024

Language: Английский

---