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88 Results Found

  • Communication
  • Open Access
1 Citations
2,122 Views
8 Pages

29 September 2022

Targeting the adjustment of the errors-in-variables (EIV) model with equality and inequality constraints, a general solution that is similar to the classical least square adjustment is proposed based on the penalty function and the weight in measurem...

  • Article
  • Open Access
2 Citations
2,337 Views
14 Pages

16 February 2022

In this paper, a class of nondifferentiable DC programming with DC inequality and DC equality constraints are considered. Firstly, in terms of this special nondifferentiable DC constraint system, an appropriate relaxed constant rank constraint qualif...

  • Article
  • Open Access
3 Citations
2,054 Views
26 Pages

4 February 2020

For optimal control problems of Bolza with variable and free end-points, nonlinear dynamics, nonlinear isoperimetric inequality and equality restrictions, and nonlinear pointwise mixed time-state-control inequality and equality constraints, sufficien...

  • Article
  • Open Access
1 Citations
2,505 Views
19 Pages

8 July 2024

In this paper, an algorithm is proposed to solve the non-convex optimization problem using sequential convex programming. An approximation method was used to solve the collision avoidance constraint. An iterative approach was utilized to estimate the...

  • Article
  • Open Access
2 Citations
1,372 Views
17 Pages

12 August 2023

In this paper, we introduce a series of definitions of generalized affine functions for vector-valued functions by use of “linear set”. We prove that our generalized affine functions have some similar properties to generalized convex func...

  • Article
  • Open Access
547 Views
15 Pages

29 May 2025

This research examines key inequalities associated with the scalar and Ricci curvatures of slant submersions within generalized Sasakian space forms (GSSFs). We establish significant geometric constraints and conduct a detailed analysis of the condit...

  • Article
  • Open Access
1 Citations
3,021 Views
11 Pages

21 January 2020

In this paper, a lifting-penalty method for solving the quadratic programming with a quadratic matrix inequality constraint is proposed. Additional variables are introduced to represent the quadratic terms. The quadratic programming is reformulated a...

  • Article
  • Open Access
20 Citations
7,282 Views
18 Pages

Sensitivity-Based Economic NMPC with a Path-Following Approach

  • Eka Suwartadi,
  • Vyacheslav Kungurtsev and
  • Johannes Jäschke

27 February 2017

We present a sensitivity-based predictor-corrector path-following algorithm for fast nonlinear model predictive control (NMPC) and demonstrate it on a large case study with an economic cost function. The path-following method is applied within the ad...

  • Article
  • Open Access
7 Citations
2,144 Views
19 Pages

Coordinated Economic Operation of Hydrothermal Units with HVDC Link Based on Lagrange Multipliers

  • Ali Ahmad,
  • Syed Abdul Rahman Kashif,
  • Arslan Ashraf,
  • Muhammad Majid Gulzar,
  • Mohammed Alqahtani and
  • Muhammad Khalid

27 March 2023

Coordinated operation of hydrothermal scheduling with HVDC links considering network constraints becomes a vital issue due to their remote location and recent induction in the existing power system. The nonlinear and complex nature of the problem int...

  • Article
  • Open Access
1 Citations
2,459 Views
16 Pages

29 January 2022

We study a variable end-points calculus of variations problem of Bolza containing inequality and equality constraints. The proof of the principal theorem of the paper has a direct nature since it is independent of some classical sufficiency approache...

  • Feature Paper
  • Article
  • Open Access
33 Citations
6,038 Views
17 Pages

Application of Dynamic Non-Linear Programming Technique to Non-Convex Short-Term Hydrothermal Scheduling Problem

  • Omid Hoseynpour,
  • Behnam Mohammadi-ivatloo,
  • Morteza Nazari-Heris and
  • Somayeh Asadi

19 September 2017

Short-term hydro-thermal scheduling aims to obtain optimal generation scheduling of hydro and thermal units for a one-day or a one-week scheduling time horizon. The main goal of the problem is to minimize total operational cost considering a series o...

  • Article
  • Open Access
1,284 Views
24 Pages

Ascent Trajectory Optimization Using Second-Order Birkhoff Pseudospectral Methods

  • Xiaopeng Xue,
  • Yujia Xie,
  • Hui Zhou,
  • Qinghai Gong and
  • Dangjun Zhao

13 February 2025

This paper proposes a novel convex optimization framework for two-stage launch vehicle (TSLV) ascent trajectory planning from liftoff to orbit insertion, featuring two groundbreaking advancements over existing convex optimization methodologies: (1) a...

  • Article
  • Open Access
1 Citations
2,255 Views
17 Pages

19 January 2021

Two sufficiency theorems for parametric and a nonparametric problems of Bolza in optimal control are derived. The dynamics of the problems are nonlinear, the initial and final states are free, and the main results can be applied when nonlinear mixed...

  • Article
  • Open Access
7 Citations
1,878 Views
23 Pages

9 February 2023

When solving the control co-design (CCD) problem using the simultaneous strategy in a deterministic manner, the uncertainty stemming from the stochastic design variables is ignored, and might have a negative influence on the performance of the dynami...

  • Article
  • Open Access
18 Citations
5,436 Views
16 Pages

10 July 2019

Climate adaptation efforts are recurrent in the science and policy spheres, especially in the context of the adaptation of community-driven, small-scale farming systems. One such is subsistence farming, which constitutes the backbone of most rural su...

  • Article
  • Open Access
3 Citations
900 Views
16 Pages

The issue of inventory balance in supply chain management represents a classic problem within the realms of management and logistics. It can be modeled using a mixture of equality and inequality constraints, encompassing specific considerations such...

  • Feature Paper
  • Article
  • Open Access
1,444 Views
21 Pages

12 October 2024

In this article, we investigate a class of non-smooth semidefinite multiobjective programming problems with inequality and equality constraints (in short, NSMPP). We establish the convex separation theorem for the space of symmetric matrices. Employi...

  • Article
  • Open Access
1 Citations
1,744 Views
20 Pages

25 July 2022

For optimal control problems of Bolza involving time-state-control mixed constraints, containing inequalities and equalities, fixed initial end-point, variable final end-point, and nonlinear dynamics, sufficient conditions for weak minima are derived...

  • Article
  • Open Access
1,578 Views
17 Pages

1 January 2023

This paper investigates the imperfect premise matching-based (IPMB) static output feedback (SOF) controller for T–S fuzzy systems with time-varying delays. Firstly, by employing integral inequality techniques, the membership-function-independen...

  • Article
  • Open Access
1 Citations
1,441 Views
23 Pages

5 March 2024

We discuss several algorithms for solving a network optimization problem of simultaneous routing and bandwidth allocation in green networks in a decomposed way, based on the augmented Lagrangian. The problem is difficult due to the nonconvexity cause...

  • Article
  • Open Access
4 Citations
2,284 Views
16 Pages

A Method for Transforming Non-Convex Optimization Problem to Distributed Form

  • Oleg O. Khamisov,
  • Oleg V. Khamisov,
  • Todor D. Ganchev and
  • Eugene S. Semenkin

9 September 2024

We propose a novel distributed method for non-convex optimization problems with coupling equality and inequality constraints. This method transforms the optimization problem into a specific form to allow distributed implementation of modified gradien...

  • Article
  • Open Access
1,648 Views
14 Pages

7 April 2021

This paper begins with a geometric statement of constraint optimization problems, which include both equality and inequality-type restrictions. The cost to optimize is a curvilinear functional defined by a given differential one-form, while the optim...

  • Article
  • Open Access
7 Citations
3,826 Views
19 Pages

22 January 2021

An implicit scheme by partitioned procedures is proposed to solve a dynamic fluid–structure interaction problem in the case when the structure displacements are limited by a rigid obstacle. For the fluid equations (Sokes or Navier–Stokes)...

  • Article
  • Open Access
29 Citations
7,963 Views
19 Pages

Debates on the absence of women in senior organizational roles continue to proliferate but relatively little attention is paid to the Higher Education (HE) context in which women in leadership roles are seriously under-represented. However, higher ed...

  • Article
  • Open Access
2 Citations
1,805 Views
24 Pages

This paper investigates finite-time resource allocation problems (RAPs) for uncertain nonlinear fractional-order multi-agent systems (FOMASs), considering global equality and local inequality constraints. Each agent is described by high-order dynamic...

  • Article
  • Open Access
23 Citations
4,586 Views
13 Pages

8 June 2018

This study proposes a very effective formulation to carry out the security-constrained direct current (DC)-based optimal power flow (OPF) problem using two linear factors: (i) the power transmission distribution factors (PTDF) and (ii) the line outag...

  • Article
  • Open Access
3 Citations
2,418 Views
18 Pages

Introducing Adaptive Machine Learning Technique for Solving Short-Term Hydrothermal Scheduling with Prohibited Discharge Zones

  • Saqib Akram,
  • Muhammad Salman Fakhar,
  • Syed Abdul Rahman Kashif,
  • Ghulam Abbas,
  • Nasim Ullah,
  • Alsharef Mohammad and
  • Mohamed Emad Farrag

16 September 2022

The short-term hydrothermal scheduling (STHTS) problem has paramount importance in an interconnected power system. Owing to an operational research problem, it has been a basic concern of power companies to minimize fuel costs. To solve STHTS, a casc...

  • Article
  • Open Access
3 Citations
2,772 Views
18 Pages

A New Parameterless Filled Function Method for Global Optimization

  • Haiyan Liu,
  • Siyan Xue,
  • Yuan Cheng and
  • Shouheng Tuo

19 December 2022

The filled function method is an effective way to solve global optimization problems. However, its effectiveness is greatly affected by the selection of parameters, and the non-continuous or non-differentiable properties of the constructed filled fun...

  • Article
  • Open Access
2 Citations
2,184 Views
10 Pages

Multiobjective Convex Optimization in Real Banach Space

  • Kin Keung Lai,
  • Mohd Hassan,
  • Jitendra Kumar Maurya,
  • Sanjeev Kumar Singh and
  • Shashi Kant Mishra

10 November 2021

In this paper, we consider convex multiobjective optimization problems with equality and inequality constraints in real Banach space. We establish saddle point necessary and sufficient Pareto optimality conditions for considered problems under some c...

  • Article
  • Open Access
6 Citations
4,497 Views
21 Pages

Quadratic programming problems (QPs) frequently appear in control engineering. For use on embedded platforms, a QP solver implementation is required in the programming language C. A new solver for quadratic optimization problems, EmbQP, is described,...

  • Article
  • Open Access
8 Citations
4,716 Views
22 Pages

17 May 2019

Georeferencing is an indispensable necessity regarding operating with kinematic multi-sensor systems (MSS) in various indoor and outdoor areas. Information from object space combined with various types of prior information (e.g., geometrical constrai...

  • Article
  • Open Access
12 Citations
3,248 Views
20 Pages

1 July 2018

In the context of large-scale renewable energy integrated into an electrical power system, the effects of power forecast errors on the power balance equation of the power system unit commitment model is considered. In this paper, the problem of solvi...

  • Article
  • Open Access
1 Citations
2,677 Views
26 Pages

19 April 2023

A limited feasible region restricts individuals from evolving optionally and makes it more difficult to solve constrained optimization problems. In order to overcome difficulties such as introducing initial feasible solutions, a novel algorithm calle...

  • Article
  • Open Access
3 Citations
2,428 Views
14 Pages

A Monthly Hydropower Scheduling Model of Cascaded Reservoirs with the Zoutendijk Method

  • Binbin Zhou,
  • Suzhen Feng,
  • Zifan Xu,
  • Yan Jiang,
  • Youxiang Wang,
  • Kai Chen and
  • Jinwen Wang

6 December 2022

A monthly hydropower scheduling determines the monthly flows, storage, and power generation of each reservoir/hydropower plant over a planning horizon to maximize the total revenue or minimize the total operational cost. The problem is typically a co...

  • Feature Paper
  • Article
  • Open Access
6 Citations
2,937 Views
19 Pages

Problems where several incommensurable objectives have to be optimized concurrently arise in many engineering and financial applications. Continuation methods for the treatment of such multi-objective optimization methods (MOPs) are very efficient if...

  • Article
  • Open Access
4 Citations
2,959 Views
18 Pages

Advanced Algorithms in Automatic Generation Control of Hydroelectric Power Plants

  • Yury V. Kazantsev,
  • Gleb V. Glazyrin,
  • Alexandra I. Khalyasmaa,
  • Sergey M. Shayk and
  • Mihail A. Kuparev

17 December 2022

The problem of load distribution between hydraulic units at hydropower plants is a difficult task due to the nonlinearity of hydro turbine characteristics and individual peculiarities of the generation units, in which operating conditions are often d...

  • Article
  • Open Access
39 Citations
5,610 Views
17 Pages

6 February 2018

In the past two decades, China’s manufacturing industry has achieved great success. However, pollution and environmental impacts have become more serious while this industry has grown. The economic and emission dispatch (EED) problem is a typical mul...

  • Review
  • Open Access
5 Citations
2,079 Views
26 Pages

22 September 2022

Miniaturization trends in high-frequency electronics have led to accommodation challenges in the integration of the corresponding components. Size reduction thereof has become a practical necessity. At the same time, the increasing performance demand...

  • Feature Paper
  • Article
  • Open Access
11 Citations
5,275 Views
26 Pages

3 October 2018

Model-based design principles have received considerable attention in biotechnology and the chemical industry over the last two decades. However, parameter uncertainties of first-principle models are critical in model-based design and have led to the...

  • Article
  • Open Access
224 Views
15 Pages

4 December 2025

Serrin’s works provided a new perspective on classical thermodynamics through his statements of the first law and the accumulation function, and of the second law and the accumulation theorem, as well as the subsequent result by Huilgol that th...

  • Article
  • Open Access
6 Citations
3,388 Views
36 Pages

12 October 2022

The study is dedicated to elaborating and analyzing a technique for autonomous vehicle (AV) motion planning based on sequential trajectory and kinematics optimization. The proposed approach combines the finite element method (FEM) basics and nonlinea...

  • Article
  • Open Access
10 Citations
2,648 Views
29 Pages

Research on Dynamic Economic Dispatch Optimization Problem Based on Improved Grey Wolf Algorithm

  • Wenqiang Yang,
  • Yihang Zhang,
  • Xinxin Zhu,
  • Kunyan Li and
  • Zhile Yang

21 March 2024

The dynamic economic dispatch (DED) problem is a typical complex constrained optimization problem with non-smooth, nonlinear, and nonconvex characteristics, especially considering practical situations such as valve point effects and transmission loss...

  • Article
  • Open Access
22 Citations
1,606 Views
21 Pages

Consensus of T-S Fuzzy Fractional-Order, Singular Perturbation, Multi-Agent Systems

  • Xiyi Wang,
  • Xuefeng Zhang,
  • Witold Pedrycz,
  • Shuang-Hua Yang and
  • Driss Boutat

Due to system complexity, research on fuzzy fractional-order, singular perturbation, multi-agent systems (FOSPMASs) remains limited in control theory. This article focuses on the leader-following consensus of fuzzy FOSPMASs with orders in the range o...

  • Article
  • Open Access
25 Citations
4,047 Views
23 Pages

29 December 2018

The paper deals with the modeling and optimization of an integrated multi-component energy system. On-off operation and presence-absence of components must be described by means of binary decision variables, besides equality and inequality constraint...

  • Article
  • Open Access
10 Citations
3,067 Views
16 Pages

21 January 2020

This study compares two efficient formulations to solve corrective as well as preventive security-constrained (SC) DC-based optimal power flow (OPF) problems using linear sensitivity factors without sacrificing optimality. Both SCOPF problems are mod...

  • Article
  • Open Access
17 Citations
2,262 Views
24 Pages

Oppositional Pigeon-Inspired Optimizer for Solving the Non-Convex Economic Load Dispatch Problem in Power Systems

  • Rajakumar Ramalingam,
  • Dinesh Karunanidy,
  • Sultan S. Alshamrani,
  • Mamoon Rashid,
  • Swamidoss Mathumohan and
  • Ankur Dumka

13 September 2022

Economic Load Dispatch (ELD) belongs to a non-convex optimization problem that aims to reduce total power generation cost by satisfying demand constraints. However, solving the ELD problem is a challenging task, because of its parity and disparity co...

  • Article
  • Open Access
10 Citations
2,162 Views
17 Pages

21 April 2022

Co-generation units (i.e., combined heat and power plants—CHPs) are playing an important role in fulfilling the heat and power demand in the energy system. Due to the depletion of fossil fuels and rising carbon footprints in the environment, it is ne...

  • Article
  • Open Access
9 Citations
4,522 Views
26 Pages

This paper focuses on the economic power dispatch (EPD) operation of a microgrid in an OPAL-RT environment. First, a long short-term memory (LSTM) network is proposed to forecast the load information of a microgrid to determine the output of a power...

  • Article
  • Open Access
19 Citations
4,562 Views
21 Pages

21 January 2021

In this paper, a hierarchical driving force distribution and control strategy for a six-wheel drive (6WD) skid-steering electric unmanned ground vehicle (EUGV) with independent drive motors is presented to improve the vehicle maneuverability and stab...

  • Article
  • Open Access
2 Citations
1,960 Views
16 Pages

20 May 2023

The paper presents a model-based design consideration of a series single-ended transistor resonant DC-DC converter with zero voltage switching (ZVS). A characteristic of this converter is that it is highly efficient due to the resonant nature of elec...

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