Aileron endurance test rig design based on high fidelity mathematical modeling

2017 ◽  
Vol 8 (4) ◽  
pp. 653-671 ◽  
Author(s):  
Mukesh Prasad ◽  
K. V. Gangadharan
Keyword(s):  
Mathematical Modeling ◽  
High Fidelity ◽  
Test Rig ◽  
Endurance Test

Research on a novel flow rate inferential measurement method and its application in hydraulic elevators

2016 ◽  
Vol 231 (2) ◽  
pp. 372-386 ◽  
Author(s):  
Bing Xu ◽  
Pengpeng Dong ◽  
Junhui Zhang ◽  
Jinjin Yao
Keyword(s):  
Mathematical Modeling ◽  
Flow Rate ◽  
Measurement Method ◽  
Sensitivity Analyses ◽  
Hydraulic Systems ◽  
Rate Measurement ◽  
Flow Rate Measurement ◽  
Test Rig ◽  
Flow Meters ◽  
Inferential Measurement

Measuring and controlling the flow rate is a widely concerned problem in engineering fields. The direct flow rate measurement employing conventional flow meters and the indirect flow rate measurement using speed/position transducers or other particular techniques would result in inevitable pressure drop in hydraulic circuits, more energy consumption for pumping fluid, and higher cost of hydraulic systems. This paper presents a novel flow rate inferential measurement method and its application in hydraulic elevators. Mathematical modeling of the proposed method is deduced. The key component of the hydraulic elevator circuit, a two-stage proportional flow rate valve, is verified by experiments as one of the contributions of this paper. Based on the mathematical modeling and the valve validation test, the feasibility and validity of the proposed method are verified by the experiments performed on a test rig which is designed to imitate work situations of a hydraulic elevator. Moreover, sensitivity analyses of the proposed flow rate inferential measurement method are carried out to find the ways how to improve the accuracy of the proposed method. It is believed that this method can be applied in various engineering devices.

Seismic isolator test rig control using high-fidelity non-linear dynamic system modelling

Meccanica ◽  
2013 ◽  
Vol 49 (1) ◽  
pp. 169-179 ◽  
Author(s):  
Stefano Pagano ◽  
Michele Russo ◽  
Salvatore Strano ◽  
Mario Terzo
Keyword(s):  
Dynamic System ◽  
Linear Dynamic System ◽  
System Modelling ◽  
High Fidelity ◽  
Test Rig ◽  
Linear Dynamic ◽  
Seismic Isolator ◽  
Non Linear

High Fidelity

2018 ◽  
pp. 150-174
Author(s):  
Kevin N. Laland
Keyword(s):  
Mathematical Modeling ◽  
Experimental Investigation ◽  
Capuchin Monkeys ◽  
High Fidelity ◽  
Max Planck ◽  
Evolutionary Anthropology ◽  
Cumulative Culture ◽  
Technology And Culture ◽  
Theoretical Analyses ◽  
Shed Light

This chapter describes three theoretical analyses which shed light on the question as to what was different about the behavior, morphology, or circumstances of our ancestors that allowed our technology and culture to take off in such an extraordinary manner. Here, mathematical modeling has proven extremely insightful, particularly by demonstrating that high-fidelity transmission would lead to cultural traits persisting for extremely long periods. The theoretical findings supported a verbal argument that had been made previously by psychologist Michael Tomasello at the Max Planck Institute for Evolutionary Anthropology in Leipzig. Tomasello had proposed that our species' unique capabilities for language, teaching, and efficient imitation had allowed us to transmit knowledge with a higher fidelity than observed in other animals, and that this transmission fidelity explained the existence of cumulative culture (what he termed “ratcheting”) in humans, but not in other animals. The chapter ends with an account of an experimental investigation in children, chimpanzees, and capuchin monkeys that reinforces these theoretical findings.

Development of Cost-Effective Endurance Test Rig with Integrated Algorithm for Safety

2020 ◽  
pp. 175-190
Author(s):  
Emanuele Lindo Secco ◽  
Rashid Abdulrahman ◽  
Ian Felmeri ◽  
Atulya K. Nagar
Keyword(s):  
Cost Effective ◽  
Test Rig ◽  
Endurance Test

Near-Earth Unmanned Aerial Vehicles: Sensor Suite Testing and Evaluation

2006 ◽  
Author(s):  
Vefa Narli ◽  
Paul Y. Oh
Keyword(s):  
Performance Metrics ◽  
High Fidelity ◽  
Hardware In The Loop ◽  
Test Rig ◽  
Math Model ◽  
The Real ◽  
Sensor Performance ◽  
Six Degree Of Freedom ◽  
World Environment ◽  
Testing And Evaluation

This paper describes a test rig that is used to design and test sensor suites for unmanned air vehicles (UAV) operating in near-earth like environments such as forests, caves and urban canyons. The test rig employs a six degree-of-freedom gantry. Inside its workspace is a full-scale diorama of the environment. Surrounding the gantry are lamps, fans, and generators to reproduce lighting, rain and obscurants typical of such environments. A sensor pod is mounted at the gantry end-effector. The acquired data is fed into a high-fidelity math model of the real UAV. The output is then used to drive the gantry to move the sensor pod in the real world environment. The net effect is a hardware-in-the-loop system that emulates the real UAV’s motions and responses in near-Earth environments. The test rig is important because there is little to no data on sensor performance metrics of UAV in near-Earth environments.

scholarly journals Comparison of real-time models for high-fidelity hardware-in-the-loop catenary emulation in a high-dynamic pantograph test rig

2017 ◽  
Vol 199 ◽  
pp. 3290-3295
Author(s):  
Alexander Schirrer ◽  
Guilherme Aschauer ◽  
Stefan Jakubek
Keyword(s):  
Real Time ◽  
High Fidelity ◽  
Hardware In The Loop ◽  
Test Rig ◽  
High Dynamic

scholarly journals Development of a High-fidelity Experimental Substructure Test Rig for Grid-scored Sandwich Panels in Wind Turbine Blades

Strain ◽  
2013 ◽  
Vol 50 (2) ◽  
pp. 111-131 ◽  
Author(s):  
S. Laustsen ◽  
E. Lund ◽  
L. Kühlmeier ◽  
O. T. Thomsen
Keyword(s):  
Wind Turbine ◽  
Turbine Blades ◽  
Sandwich Panels ◽  
High Fidelity ◽  
Test Rig ◽  
Wind Turbine Blades
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