Application of maximum principle optimizing active current subharmonic filter by V. N. Anosov, D. N. Belkova, V. M. Kaveshnikov

“…In this article, the structure and parameters of an optimal regulator for active filter current subharmonics (AFSC) are received based on the optimal control method L. S. Pontryagin. Such a regulator allows one to achieve complete suppression of the subsynchronous torsional vibrations of the rotors of gas turbine units (GTU) of an autonomous power plant at the stage of emergence and growth of resonance at one of the natural frequencies of GTU torsional vibrations and to prevent operation of vibration protection and emergency shutdown of the power plant. …”
Get full text

Identification of mathematical model of diesel fuel hydrotreatment process for creation system optimization of group of technological units of oil refinery plant by R. A. Khakimov

“…The relevance of the study is determined by the fact that the existing optimal control systems solve the problem of local optimization of one process, rather than the problem of global optimization of oil refinery chains. …”
Get full text

Analytical forecasting of the optimal trajectory of mobile robot by A. A. Lobaty, D. V. Kapskiy, A. K. Ibrahim, I. A. Shishkovets

“…As a result of analytical synthesis, mathematical dependences were obtained to determine the control acceleration, which allow in the robot control system to obtain a given optimal control law in the form of the rotation angle of the velocity vector, which ultimately ensures the minimum energy consumption by the mobile robot for various conditions of its use. …”
Get full text

A Study of an IT-Assisted Higher Education Model Based on Distributed Hardware-Assisted Tracking Intervention by Haijun Liu

“…The proposed novel policy iterative algorithm is used to learn the optimal control protocol and achieve optimal consistency control. …”
Get full text

Forced motion control of a mobile robot by T. Yu. Kim, R. A. Prakapovich, A. A. Lobatiy

“…The method of the theory of optimal control according to the criterion of maximum speed, the wave algorithm for finding the shortest path, the method of finite automata for relay control of the acceleration of movement are used.Results. …”
Get full text

Linear Quadratic Regulator-Based Coordinated Voltage and Power Control for Flexible Distribution Networks by Zhipeng Jing, Lipo Gao, Chengao Wu, Dong Liang

“…Then, a discrete-time state-space model is constructed for flexible distribution networks with multi-port SOPs, using the voltage magnitude deviations at the AC side of all PQ-controlled voltage source converters (VSCs) and the loading rate deviations of the transformers corresponding to all PQ-controlled VSCs as state variables. An LQR-based optimal control model is then established, aiming to simultaneously minimize deviations of voltage magnitudes and transformer loading rates from their reference values, which correspond to the V_dc-controlled VSC. …”
Get full text

Differential resistance to nematode infection is associated with the genotype- and age-dependent pace of intestinal T cell homing by Joshua Adjah, Bhavya Kapse, Hongwei Zhang, Susanne Hartmann, Sebastian Rausch

“…C57BL/6 mice failed in the optimal control of early nematode fitness, with mucosal Th2 response peaking after 2 weeks when the larvae had left the tissue and relocated to the gut lumen as adult worms. …”
Get full text

An adaptive voltage reference based multi-objective line flow control methods for MMC-MTDC system by Yuanshi Zhang, Wenyan Qian, Yiwen Feng, Fei Zhang, Chenyi Zheng, Qinran Hu, Liwei Wang

“…In this paper, a novel adaptive voltage reference based multi-objective optimal control method is proposed for proper line power flow control, as well as voltage deviation minimization and economic operation of the MTDC system. …”
Get full text

Effect of Photovoltaic Energy-Saving Window Factors on Building Heating Load Under Three Control Modes by Jiayi Li, Jianmei Wu, Hongpeng Xu

“…The main findings are as follows: (1) When PV glazing is controlled, clear glazing layers become the primary factor influencing the heating load. (2) In Modes 1 and 3, the configurations have a greater impact on heating load, reducing it by 34.62% and 39.60%, respectively, while Mode 2 shows a reduction of 17.93%. (3) Mode 2 is the optimal control mode, confirming the effectiveness of controlling PV glazing to reduce heating load.…”
Get full text

Neural Network-Based Parameter Estimation and Compensation Control for Time-Delay Servo System of Aeroengine by Hongyi Chen, Qiuhong Li, Zhifeng Ye, Shuwei Pang

“…The estimated delay was embedded into an online sequential extreme learning machine, and a nonlinear model predictive controller was designed to obtain an optimal control sequence. The compensation control loop was designed to reduce the impact of the model and delay mismatch problems of the control system. …”
Get full text

Improving the technical and economic efficiency of a derivation-type inverter of micro hydro power plant by B. V. Lukutin, M. M. Popov

“…Thus, the article represents a comprehensive analysis of the technical and economic efficiency and optimal control of a derivation-type inverter micro hydro power plant with an energy storage system, which can be used in the design and operation of similar power supply systems.…”
Get full text

Modeling BK Virus Infection in Renal Transplant Recipients by Nicholas Myers, Dana Droz, Bruce W. Rogers, Hien Tran, Kevin B. Flores, Cliburn Chan, Stuart J. Knechtle, Annette M. Jackson, Xunrong Luo, Eileen T. Chambers, Janice M. McCarthy

“…We seek to model viral and immune dynamics with the ultimate goal of applying optimal control methods to this problem. In this paper, we begin with a previously published model and make simplifying assumptions that reduce the number of parameters from 20 to 14. …”
Get full text

Multiobjective Optimal Formulations for Bus Fleet Size of Public Transit under Headway-Based Holding Control by Shidong Liang, Minghui Ma, Shengxue He

“…Therefore, this work has presented a set of optimal control formulations to minimize the costs for the passengers and the bus company through calculating the optimal number of buses and the dynamic holding time, taking into account the randomness of passenger arrivals. …”
Get full text

Dynamic analysis and comparison of the performance of linear and nonlinear controllers applied to a nonlinear non-interactive and interactive process by José M. Campos-Salazar, Pablo Lecaros, Rodrigo Sandoval-García

“…The LQR design employed optimal control theory, minimizing a quadratic cost function to derive the state feedback gain matrix, ensuring system stability by shifting the eigenvalues of the closed-loop system matrix into the left half of the complex plane. …”
Get full text

Interaction model estimation-based robotic force-position coordinated optimization for rigid–soft heterogeneous contact tasks by Haochen Zheng, Xueqian Zhai, Hongmin Wu, Jia Pan, Zhihao Xu, Xuefeng Zhou

“…Inspired by Model Predictive Interaction Control (MPIC), this paper proposes differential models for estimating contact geometric parameters and normal-friction forces and formulates an optimal control problem with multiple constraints to allow robots to perform rigid–soft heterogeneous contact tasks. …”
Get full text

Quasi‐Static Closed‐Loop Wind‐Farm Control for Combined Power and Fatigue Optimization by Ishaan Sood, Christophe del Fosse et d'Espierres, Johan Meyers

“…The look‐up table‐based fatigue model is developed offline through a series of OpenFast simulations, covering different operational states of a DTU 10‐MW reference wind turbine, and verified against large eddy simulations with aeroelastic coupling. Subsequently, optimal control set points for the TotalControl reference wind power plant are obtained using the analytical model and tested in a wind‐farm emulator that is based on large eddy simulations. …”
Get full text

Assessment of Factors Affecting Time to Recovery from COVID-19: A Retrospective Study in Ethiopia by Anteneh Mengist Dessie, Sefineh Fenta Feleke, Denekew Tenaw Anley, Rahel Mulatie Anteneh, Zelalem Animut Demissie

“…The average duration of recovery from COVID-19 and influencing factors, which would help inform optimal control strategies, remain unclear. Moreover, studies regarding this issue are limited in Ethiopia, and no region-wise studies were conducted. …”
Get full text

Smart Healthy Schools: An IoT-enabled concept for multi-room dynamic air quality control by Alessandro Zivelonghi, Alessandro Giuseppi

“…In the post-pandemic era, equipping schools with a network of smart IoT sensors has become critical to aspire for the optimal control of the IAQ and lowering the airborne infection risk of several pathogens, indirectly related to cumulated human emitted CO2 levels over time. …”
Get full text

Modelling the Transmission Dynamics of Meningitis among High and Low-Risk People in Ghana with Cost-Effectiveness Analysis by Nicholas Kwasi-Do Ohene Opoku, Reindorf Nartey Borkor, Andrews Frimpong Adu, Hannah Nyarkoah Nyarko, Albert Doughan, Edwin Moses Appiah, Biigba Yakubu, Isabel Mensah, Samson Pandam Salifu

“…To find the best strategy for minimizing the number of carriers and infected individuals, we reformulated the model into an optimal control model using Pontryagin’s maximum principles with intervention measures such as vaccination, treatment, and personal protection. …”
Get full text

How Does Indonesian Chronic Disease Patient Adhere to Their Treatment? A Cross-Sectional Analysis of 11,408 Subjects by Pradipta IS, Aprilio K, Ningsih YF, Pratama MAA, Gatera VA, Alfian SD, Iskandarsyah A, Abdulah R

“…Further consideration of characteristics associated with treatment nonadherence should be given to ensure optimal control of chronic diseases.Keywords: chronic diseases, adherence, socioeconomic factors, patient-related factors, condition-related factors…”
Get full text