An introduction to the novel vacuum plume effects experimental system

The nonlinear dynamics of hula hoop motion is deciphered in this study by nonlinear dynamic modeling techniques to find solution and stability analysis. This is different from the previous study [1], where a homotopy method is employed. The analysis results are capable of transforming linear reciprocating motion into rotational motion. The dynamic governing equations of the system are first successfully derived by force balance. The non-linear dynamic analysis is next applied to derive approximate, asymptotic solutions. Stabilities associated with all solution are determined by subsequent analysis on the derived asymptotic solutions. In addition, the transformer could be integrated with coils, magnets, and electric circuits to form a portable energy scavenging device. A novel front-end circuit is proposed in this work for harvesting human’s energy. The situation of human’s walking and running is simulated by a shaker. And the ac-like energy is processed by the novel energy harvesting circuit, transformed as a DC voltage suitable for devices successfully. The efficiency of the entire circuit is proven up to 60%, and is an input-powered circuit with no standby power. A complete experimental system is also designed and successfully confirm the existence of the stable nonlinear solutions found by analytical and numerical analysis.

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Research on a Novel Fabry–Perot Interferometer Model Based on the Ultra-Small Gradient-Index Fiber Probe

Sensors ◽

10.3390/s19071538 ◽

2019 ◽

Vol 19 (7) ◽

pp. 1538 ◽

Cited By ~ 1

Author(s):

Chi Wang ◽

Jianmei Sun ◽

Chenye Yang ◽

Bin Kuang ◽

Dong Fang ◽

...

Keyword(s):

Output Voltage ◽

Experimental System ◽

Single Mode ◽

Single Mode Fiber ◽

Gradient Index ◽

The Novel ◽

Fiber Probe ◽

Model Based ◽

Fabry Perot ◽

Working Distance

A novel Fabry–Perot (F–P) interferometer model based on the ultra-small gradient-index (GRIN) fiber probe is investigated. The signal arm of the F–P interferometer is organically combined with the ultra-small GRIN fiber probe to establish the theoretical model of the novel F–P interferometer. An interferometer experimental system for vibration measurements was built to measure the performance of the novel F–P interferometer system. The experimental results show that under the given conditions, the output voltage of the novel interferometer is 3.9 V at the working distance of 0.506 mm, which is significantly higher than the output voltage 0.48 V of the single-mode fiber (SMF) F–P interferometer at this position. In the range of 0.1–2 mm cavity length, the novel interferometer has a higher output voltage than an SMF F–P interferometer. Therefore, the novel F–P interferometer is available for further study of the precise measurement of micro vibrations and displacements in narrow spaces.

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Definition of metabolism-dependent xenobiotic toxicity with co-cultures of human hepatocytes and mouse 3T3 fibroblasts in the novel integrated discrete multiple organ co-culture (IdMOC) experimental system: Results with model toxicants aflatoxin B1, cyclophosphamide and tamoxifen

Chemico-Biological Interactions ◽

10.1016/j.cbi.2012.05.003 ◽

2012 ◽

Vol 199 (1) ◽

pp. 1-8 ◽

Cited By ~ 22

Author(s):

Albert P. Li ◽

Aarti Uzgare ◽

Yumiko S. LaForge

Keyword(s):

Aflatoxin B1 ◽

Experimental System ◽

Multiple Organ ◽

Human Hepatocytes ◽

The Novel ◽

3T3 Fibroblasts ◽

Definition Of

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Research on the Mechanics of a Novel Pulsed Micro-Injection System

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.403-408.3748 ◽

2011 ◽

Vol 403-408 ◽

pp. 3748-3752

Author(s):

Yong Gui Lv ◽

Kai Chen

Keyword(s):

Theoretical Model ◽

Piezoelectric Actuator ◽

Injection Pressure ◽

Experimental System ◽

Injection System ◽

The Novel ◽

Liquid Injection ◽

Injection Mechanism ◽

Injection Technology ◽

Rising Time

Aiming at the inadequacies of the existing liquid injection mechanism, a novel pulsed micro-injection technology based on an amplification piezoelectric actuator (APA) was presented. The mechanics of the micro-injection was investigated. The theoretical model among the parameters of flow velocity, orifice’s dimension, amplitude and rising time of the pulsed signal was established. A micro-injection experimental system was established. The injection pressure out of the orifice was measured. Results show this novel micro-injection technology is feasible, and future development of the novel injection systems is possible.

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Mobile AR Requirements for Location Based Social Networks

International Journal of Virtual Reality ◽

10.20870/ijvr.2010.9.4.2792 ◽

2010 ◽

Vol 9 (4) ◽

pp. 67-78

Author(s):

Tuukka Turunen ◽

Tino Pyssysalo ◽

Juha Röning

Keyword(s):

Social Networks ◽

Mobile Phones ◽

Data Transfer ◽

Experimental System ◽

The Novel ◽

End User ◽

Mobile Ar ◽

Location Based Social Networks ◽

First Time ◽

Accuracy Data

Utilizing the novel User Interface (UI) technology of Augmented Reality (AR) in mobile phones provides significant advantages for Location Based Social Networks (LBSN) via powerful UI that allows the user to see the world through AR view rather than via a traditional map view. Compared to use of a map based interface, it is much easier for the user to understand where the nearby friends and points of interests are located when using a mobile AR interface to access the information of LBSN services. Recent development in the commercially available high end mobile phones has made it a viable device to use globally available AR services, but there still exist some limitations when it comes to LBSN services. Especially demanding is the need to include constantly moving friends reliably and accurately as annotated objects into the AR view of a user. In this article we show for the first time that mobile phones can be utilized to create mobile AR based LBSN services and create an experimental system to validate this. We present the most important use cases of the mobile AR based LBSN services, define the key requirements for the system, and analyze how the current high end mobile phones meet these. We point out the main challenges in position and orientation accuracy, data transfer and power consumption, as well as solutions to improve these. We present results from end-user studies and our experimental system we have created to study mobile AR interface for the LBSN services, and conclude that the mobile phones can be used for creation of these services when the key challenges are resolved

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Novel Methods and Technologies for Assessing Usability of Off-Road Machines in R&D Phase - The Lutergo Laboratory

10.1115/fpmc2021-68979 ◽

2021 ◽

Author(s):

Victor Zhidchenko ◽

Amin Hekmatmanesh ◽

Heikki Handroos ◽

Asko Kilpeläinen ◽

Kari Kauranen

Keyword(s):

Traditional Approach ◽

Brain Activity ◽

Experimental System ◽

Future Research ◽

The Novel ◽

Stress Indicators ◽

Research Directions ◽

Valve Dynamics ◽

Future Research Directions ◽

As Stress

Abstract A novel intelligent experimental research environment (LUTERGO laboratory) for developing the usability of off-road machines was created at LUT University. The environment combines a real-time simulator and an experimental system for measuring human body responses when driving the virtual prototypes of machines. Based on the quantities measured from the operator, such as heart rate, electrodermal, muscular, and brain activity, the stress level of the operator can be evaluated. It is assumed that by combining simulated machine data and biosignals, the usability of every virtual prototype of a new machine can be assessed during the R&D process. This is an alternative to a traditional approach when usability is studied with physical prototypes after conceptual R&D phases using qualitative data from questionnaires. The paper describes the structure and capabilities of the LUTERGO laboratory. Results of the initial tests are presented, which studied the influence of hydraulic valve dynamics on excavator vibration and operator biosignals. The results show that the biosignal parameters used as stress indicators change following the variation of time constant for directional valves controlling the main boom cylinders of the excavator. The paper concludes with future research directions using the novel environment.

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