Results 51 to 60 of about 650 (247)
Microcontroller Based Stepper Motor Drive for an Elevator System
, 2011 M.E. (Power System and Electric Drives)The thesis addresses a microcontroller based unipolar stepper motor drive used for an elevator system. The elevator system developed can move up and down, along with the feature of floor display indicator ...
Singh, Hirdaypal
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Design and implementation of jerk-controlled elevator systems using S-curve motion profiles
Electric elevators often experience significant jerks that can shorten their lifespan and cause passenger discomfort, especially during acceleration and deceleration.
Mohammed, Jamal A.-K. +2 more
core +1 more source
A Dislocation Perspective on Strength and Toughness in Ceramics
Advanced Engineering Materials, EarlyView.Dislocations in ceramics enjoy a long but yet under‐appreciated history. The three research waves for dislocations in ceramics highlight the topic evolution over the last 90 years. This review focuses on the impact of dislocation on strength and toughness in ceramics.
Xufei Fang
wiley +1 more source
Advanced Engineering Materials, EarlyView.This study applies machine learning regression to predict chromium layer thickness in decorative trivalent chromium electroplating, using 441 experiments from laboratory‐scale (1L) and pilot‐scale (14L) setups. Tree‐based models, particularly CatBoost, outperformed linear regression by capturing nonlinear parameter interactions (R2$R^2$ up to 0.77 ...
Christoph Baumer +4 more
wiley +1 more source
Design of an Electric Elevator Drive with High Riding Quality under Jerk Control
Engineering, Technology & Applied Science ResearchSudden movements during the start and stop of electric elevators, known as jerks, can cause discomfort for passengers and negatively affect the performance and lifespan of their mechanical and electrical subsystems. Modern drives cannot directly regulate jerk, necessitating the development of methods to mitigate its effects.
Ali Abdulkareem Ali +2 more
openaire +1 more source
, 2015 There are many power electronic converters and motor drives connected together to form the electrical system of an elevator. In this paper, we have presented a modeling tool that has the advantages of utilizing capabilities of the PMSM software in ...
Shneen, Salam Waley, Mao, Chengxiong
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Advanced Engineering Materials, EarlyView.Sol–gel‐derived ZnO–rGO hybrid nanoparticles enable Al7075 powder‐metallurgy composites to achieve concurrent gains in hardness and thermal conductivity while markedly lowering friction and wear. The hybrid architecture couples ZnO‐based load support with rGO‐assisted lamellar sliding and heat spreading, revealing a promising route toward lightweight ...
Bunyamin Aksakal +3 more
wiley +1 more source
Electrified Damage in Motion Systems
Advanced Engineering Materials, EarlyView.The electrified damage in motion systems is a fundamental framework presenting the degradation pathway arising from the coupling of electrical energy transport with mechanical contact and interfacial chemistry. The framework positions electrified damage as a distinct degradation regime with unique characteristic surface morphologies and failures of ...
M. Humaun Kabir +2 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati +11 more
wiley +1 more source
Lift systems and selection of lift drive [PDF]
, 2017 U ovome radnom zadatku naš je cilj bio izračunati električnu snagu potrebnu za pogon dizala i tip asinkronog trofaznog motora nazivnog mrežnog napona 400 V.
Horvat, Domagoj
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