Results 1 to 10 of about 1,481,990 (163)

Injection of Viscous Micro-Droplet via Nozzle-Driven Piezoelectric Micro-Jet and Its Performance Control Method [PDF]

open access: yesMicromachines, 2023
The inkjet printing technology based on piezoelectric micro-jets can effectively realize the efficient and high-precision processing of special-shaped structures. In this work, a nozzle-driven piezoelectric micro-jet device is proposed, and its structure
Ti-Yuan Shan   +4 more
doaj   +2 more sources

Application of a method for student academic performance control [PDF]

open access: yesE3S Web of Conferences, 2023
A method for monitoring the results of academic performance of students in a mathematical discipline is considered. As part of the monitoring method, a mathematics testing system was developed, implemented on the basis of the Moodle distance learning ...
Kudarov R.   +2 more
doaj   +2 more sources

A Comprehensive Performance Improvement Control Method by Fractional Order Control [PDF]

open access: yesIEEE Photonics Journal, 2018
For the high precise tracking control task in quantum communications, this paper introduces a fractional-order control scheme to resolve the confliction between error rejection capacity and stability margin.
Xi Zhou, Yao Mao, Chao Zhang, Qiunong He
doaj   +2 more sources

A performance monitoring method for PID control system [PDF]

open access: yesE3S Web of Conferences, 2019
The change of plant dynamics results in mismatch between the current model and the model used for design, which may have significant impacts on the performance of control system.
Chen Wei, Wang Peihong, Dong Yihua
doaj   +2 more sources

Performance Portrait Method: Robust Design of Predictive Integral Controller

open access: yesBiomimetics
The performance portrait method (PPM) can be characterized as a systematized digitalized version of the trial and error method—probably the most popular and very often used method of engineering work.
Mikulas Huba   +3 more
doaj   +4 more sources

Research on Self-Priming Piezoelectric Microjet and Its Ejection Performance Control

open access: yesActuators, 2023
The inkjet printing technology, based on piezoelectric microjet, realizes the high-efficiency processing of special-shaped structures, and has the advantages of high precision, high efficiency, and the ability to manufacture arbitrary complex parts.
Tiyuan Shan   +4 more
doaj   +1 more source

A Survey on Control Methods for Virtual Coupling in Railway Operation

open access: yesIEEE Open Journal of Intelligent Transportation Systems, 2022
In order to meet the rapid growth of railway transportation demand, the technology that can improve its capacity has been widely concerned. Virtual Coupling (VC) is a new technology to improve capacity by decreasing headways between successive trains ...
Jing Xun   +4 more
doaj   +1 more source

Adaptive Sliding Mode Attitude-Tracking Control of Spacecraft with Prescribed Time Performance

open access: yesMathematics, 2022
In this article, a novel finite-time attitude-tracking control scheme is proposed by using the prescribed performance control (PPC) method for the spacecraft system under the external disturbance and an uncertain inertia matrix. First, a novel polynomial
Runze Chen, Zhenling Wang, Weiwei Che
doaj   +1 more source

High performance control method of electro-mechanical actuator based on active disturbance rejection control

open access: yesAdvances in Mechanical Engineering, 2022
Integrated electro-mechanical actuators (EMAs) are widely used in cooperative robots. Their control system has to be carefully designed to achieve a desirable performance.
Zhaoyao Shi, Pan Zhang, Jiachun Lin
doaj   +1 more source

Better Incentives, Better Marks: A Synthetic Control Evaluation of the Educational Policies in Ceará, Brazil

open access: yesBrazilian Political Science Review, 2023
This article evaluates the effects of two educational policies implemented in the Brazilian state of Ceará. The first was a tax incentive (TI) for mayors to improve municipal education.
Bruno Gaparotto Ponne
doaj   +1 more source

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