Results 131 to 140 of about 99,083 (312)

Robust control of room temperature and relative humidity using advanced nonlinear inverse dynamics and evolutionary optimisation [PDF]

open access: yes, 2011
A robust controller is developed, using advanced nonlinear inverse dynamics (NID) controller design and genetic algorithm optimisation, for room temperature control. The performance is evaluated through application to a single zone dynamic building model.
Zaher, Obadah Samir   +2 more
core  

Fuzzy Adaptive PID-Based Tracking Control for Autonomous Underwater Vehicles [PDF]

open access: yes
This paper addresses the trajectory tracking control problem of Autonomous Underwater Vehicles (AUVs). A comprehensive mathematical model is first established based on Newtonian mechanics, incorporating both kinematic and dynamic equations. By reasonably
Wang, Haoming   +7 more
core   +1 more source

Beyond the ESG Facade: Measuring and Addressing Corporate ‘Lip Service’

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Amid growing global attention to environmental, social and governance (ESG), this study examines the misalignment between ESG disclosures and actual practices—termed ‘lip service’—using data from Chinese firms from 2006 to 2022, constructing an index to quantify it.
Jia Xu, Mingwei Liu, Helen X. H. Bao
wiley   +1 more source

Multiobjective PI/PID Control Design Using an Iterative Linear Matrix Inequalities Algorithm [PDF]

open access: yes, 2007
Many real world control systems usually track several control objectives,simultaneously. At the moment, it is desirable to meet all specified goals using the controllers\ud with simple structures like as proportional-integral (PI) and proportional ...
Bevrani, Hassan, Hiyama, Takashi
core  

Stability Optimization of an Oil Sampling Machine Control System Based on Improved Sparrow Search Algorithm PID [PDF]

open access: yes
This paper presents an automatic oil sampling system designed for vertical cylindrical oil tanks on land, focusing primarily on the structural design and control optimization for oil level measurement and liquid sampling inside the tank.
Yangxin Teng   +7 more
core   +1 more source

Key Challenges for Commercializing Perovskite–Silicon Tandem Solar Cells

open access: yesCarbon Energy, EarlyView.
This review discusses the scientific and technological challenges in advancing perovskite–silicon tandem solar cells (PSTSCs) from lab‐scale to commercial viability, focusing on long‐term stability, scalability, and economic feasibility. Key issues include intrinsic and extrinsic degradation factors, installation conditions, environmental impacts, and ...
Bilal Mehmood   +16 more
wiley   +1 more source

PID CONTROL OF A THREE-DEGREES-OF-FREEDOM MODEL HELICOPTER [PDF]

open access: yes, 2011
Helicopter dynamic are in general nonlinear, time-varying and may be highly uncertain. This paper presents the design and implementation of a Proportional-Integral-Derivative (PID) Controller to control the elevation and travel of three-degrees-of ...
Aria, Muhammad
core  

Balance Control of Brushless Direct Current Motor Driven Two-Rotor UAV

open access: yesApplied Sciences
In this study, the balance control of a Brushless Direct Current Motor (BLDCM) driven Two-Rotor UAV (2R-UAV) was carried out. First, a MATLAB/Simulink model of the balance system of the 2R-UAV was built.
Ibrahim Cukdar   +2 more
doaj   +1 more source

Carbon monoxide adsorption on NaY zeolite and impregnated with 5% niobium: Characteristics and fixed‐bed study

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Schematic of the CO adsorption process in a fixed‐bed column containing pure NaY zeolite and Nb‐modified NaY (NaY–5%Nb). On the left, breakthrough curves and temperature profiles highlight the dynamic performance and thermal effects during CO adsorption.
Elson Oliveira   +3 more
wiley   +1 more source

Fuzzy PID control for fast-steering mirror system [PDF]

open access: yes, 2014
Fast-steering mirror system demands higher accuracy and fast responding speed to track targets, but the conventional PID controllers cannot meet the demands.
Qiao, Yong Ming(乔永明), Bai, Xue Jin
core  

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