Results 1 to 10 of about 390,592 (304)

Novel Magnetic Suspension Platform with Three Types of Magnetic Bearings for Mass Transfer

open access: yesEnergies, 2022
For ultra-precision, large stroke, and high start/stop acceleration, a novel magnetic suspension platform with three types of magnetic bearings is proposed. The structure and working principle of the novel platform are introduced.
Shinan Cao   +6 more
doaj   +1 more source

Distinction method of pipeline inner and outer defects based on the dynamic magnetic multipole field

open access: yesYou-qi chuyun, 2021
In order to identify the inner and outer defect signals in pipeline magnetic flux leakage (MFL) internal inspection under dynamic conditions, a mathematical model of dynamic leakage magnetic field based on the magnetic multipole field was established for
Jing HU   +4 more
doaj   +1 more source

Magnetic Circuit Design and Experiment of Novel Lorentz Magnetic Bearing with Double Air Gap

open access: yesEnergies, 2022
A uniform magnetic density distribution in the air gap is key for the Lorentz magnetic bearing to achieve high precision control and large torque output.
Shinan Cao   +5 more
doaj   +1 more source

Parametric identification of the mathematical model of the micro-arc oxidation process

open access: yesHeliyon, 2023
The article is aimed at solving the problem of parametric identification of non-linear object models using the example of a mathematical model of the micro-arc oxidation process.
Anatoliy Semenov   +5 more
doaj   +1 more source

Design and Analysis of a 6-DOF Magnetic Suspension Platform with an Improved Permanent Magnetic Array

open access: yesSensors, 2022
For ultra-precision, large stroke, and high start/stop acceleration, a novel 6-DOF magnetic suspension platform with a novel structure of the permanent array is proposed. The structure and the working principle of the novel platform are introduced.
Shinan Cao   +6 more
doaj   +1 more source

Resonant photoacoustic spectrometer enhanced by multipass absorption for detecting atmospheric CH4 at the ppb-level

open access: yesFrontiers in Chemistry, 2022
A resonant photoacoustic spectrometer (PAS) was developed for detecting trace atmospheric CH4. The sensitivity of the PAS was significantly increased via a Herriott-type multipass cell with a beam pattern concentrated in the cavity. The effective optical
Qiang Liu   +6 more
doaj   +1 more source

Vibration Feedforward Compensation for Magnetically Suspended Control and Sensitive Gyroscope with Spherical Rotor

open access: yesShock and Vibration, 2020
Magnetically suspended control and sensitive gyroscope (MSCSG) with two capabilities including attitude control and attitude measurement is promising in meeting the requirements of novel spacecraft.
Qiang Liu   +5 more
doaj   +1 more source

Comparison of Low-Cost 5G Electromagnetic Field Sensors

open access: yesSensors, 2023
This paper compares different low-cost sensors that can measure (5G) RF-EMF exposure. The sensors are either commercially available (off-the-shelf Software Defined Radio (SDR) Adalm Pluto) or constructed by a research institution (i.e., imec-WAVES, Ghent
Kenneth Deprez   +9 more
doaj   +1 more source

Study on Multi-Model Soft Sensor Modeling Method and Its Model Optimization for the Fermentation Process of Pichia pastoris

open access: yesSensors, 2021
The problems that the key biomass variables in Pichia pastoris fermentation process are difficult measure in real time; this paper mainly proposes a multi-model soft sensor modeling method based on the piecewise affine (PWA) modeling method, which is ...
Bo Wang   +3 more
doaj   +1 more source

Development and Optimization of a Novel Soft Sensor Modeling Method for Fermentation Process of Pichia pastoris

open access: yesSensors, 2023
This paper introduces a novel soft sensor modeling method based on BDA-IPSO-LSSVM designed to address the issue of model failure caused by varying fermentation data distributions resulting from different operating conditions during the fermentation of ...
Bo Wang, Jun Liu, Ameng Yu, Haibo Wang
doaj   +1 more source

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