Results 31 to 40 of about 1,314,165 (286)

ANALYSIS OF NONLINEAR DYNAMIC CHARACTERISTICS OF AN IMPACT-UNBALANCED SUSPENDED ROTOR SYSTEM

open access: yesJixie qiangdu, 2022
Established an impact-unbalanced suspended rotor system mechanics models, and the dimensionless motion equation of system is deduced, using the fourth order Runge-Kutta method for the numerical calculation of this model, the integrated use of bifurcation
LIU JunJie   +4 more
doaj  

Research on nonlinear dynamic characteristics of high-speed gear in two-speed transmission system

open access: yesScientific Reports, 2023
The working performance and service life of the two-speed transmission system directly affects the performance and service life of helicopters and other equipment.
Wuzhong Tan   +4 more
doaj   +1 more source

ENERGY STORAGE DEVICE OPTIMIZATION IN PERIPHERY-TYPE DOCKING ASSEMBLY [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2020
The paper considers selection of parameters of the spacecraft periphery-type docking assembly. The kinematic scheme of its docking mechanism is based on the Gough-Stewart platform. Constructive implementation of its linear elements in operation is called
Yaroslav V. Rasskazov   +1 more
doaj   +1 more source

Robust Control of Heat Exchangers

open access: yesChemical Engineering Transactions, 2012
This work deals with the design and application of a neuro-fuzzy controller to a heat exchanger and with possibilities to use the coefficient diagram method for heat exchanger control. The heat exchanger is a tubular one and it is used for pre-heating of
A. Vasickaninová, M. Bakošová
doaj   +1 more source

Study on bifurcation characteristics of multi-clearance bending torsional coupling gear transmission based on EHL

open access: yesAdvances in Mechanical Engineering, 2020
In order to study the influence of tooth surface friction on the non-linear bifurcation characteristics of multi-clearance gear drive system, a 6 degree-of-freedom bending torsional coupled vibration model was established. The time-varying mesh stiffness,
Hao Dong, Jianwen Zhang, Libang Wang
doaj   +1 more source

Multivariable integrated evaluation of model performance with the vector field evaluation diagram [PDF]

open access: yesGeoscientific Model Development, 2017
This paper develops a multivariable integrated evaluation (MVIE) method to measure the overall performance of climate model in simulating multiple fields.
Z. Xu, Y. Han, C. Fu, C. Fu
doaj   +1 more source

The Influence of Switching Frequency on Control in Voltage Source Inverters

open access: yesEnergies
This paper aims to show how the switching frequency influences the properties of the digitally controlled voltage source inverter (VSI). The measurements of the Bode plots of the inverter are shown and discussed to present the existing signal delays and ...
Zbigniew Rymarski
doaj   +1 more source

Frequency control scheme based on the CDM-PID controller for the hybrid microgrid system with stochastic renewable generators

open access: yesAutomatika, 2023
In this paper, we introduce a Coefficient Diagram Method (CDM) to design a conventional PID controller. This controller is used to decrease the frequency fluctuations of a microgrid system composed of two renewable energy sources (WTG and STPG) and four ...
M’hamed Helaimi   +3 more
doaj   +1 more source

MULTILOOP PI CONTROLLER FOR ACHIEVING SIMULTANEOUS TIME AND FREQUENCY DOMAIN SPECIFICATIONS [PDF]

open access: yesJournal of Engineering Science and Technology, 2015
Most of the controllers in control system are designed to satisfy either time domain or frequency domain specifications. This work presents the computation of a multiloop PI controller for achieving time and frequency domain specifications simultaneously.
M. SENTHILKUMAR, S. ABRAHAM LINCON
doaj  

VALIDATION OF ANALYTICAL METHOD BY UV SPECTROPHOTOMETRIC QUANTIFICATION OF GEMFIBROZIL INCORPORATED IN THE MICROEMULSIONS

open access: yesinfoANALITÍCA, 2021
The present study aims to validate an analytical method by UV spectrophotometric for the quantification of gemfibrozil incorporated into microemulsions.
María Herrera P.   +5 more
doaj   +1 more source

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