scholarly journals Advances in Integrated System Health Management for mission-essential and safety-critical aerospace applications

2022 ◽  
Vol 128 ◽  
pp. 100758
Author(s):  
Kavindu Ranasinghe ◽  
Roberto Sabatini ◽  
Alessandro Gardi ◽  
Suraj Bijjahalli ◽  
Rohan Kapoor ◽  
...  
2020 ◽  
Vol 898 ◽  
pp. 45-50
Author(s):  
Cahyono Agus ◽  
Pita Asih Bekti Cahyanti ◽  
Bambang Suhartanto ◽  
Pipit Noviyani

The tropical ecosystem had high biomass productivity but still less in economic values. Integrated Bio-cycle Farming System (IBFS) was an alternative system that harmoniously combines agricultural sectors (agriculture, forestry, animal husbandry, fishery, plantation estate, horticulture) and non-agricultural aspects (industry, household, infrastructure, the marketplace) on integrated ecological management. The key characteristics of IBFS developed in UGM University Farm were (i) an integration of agriculture and non-agriculture sector, (ii) value of environment, esthetics and economics, (iii) rotation and diversity of plants, (iv) artificial and functional biotechnology, (v) management of closed organic cycle, (vi) ecosystem health management, (vii) agropolitan concept, (viii) specific management of plant and (ix) holistic and integrated system. The management of cycle of energy, organic matter and carbon, water, nutrient, production, crop, money conducted through 9R (reuse, reduce, recycle, refill, replace, repair, replant, rebuild, reward) to obtain optimal benefits for global environment and livelihood. The system had a sustainable multifunction and multi-product (food, feed, fuel, fiber, fertilizer, biopharma, water, energy, oxygen, edutainment, eco-tourism). They would meet the expected basic need for daily-, monthly-, yearly- and decade’s income at short-, medium- and long- term periods. IBFS was a good prospect for sustainable economic, environmental, and socio-culture aspects.


2019 ◽  
Vol 304 ◽  
pp. 04013 ◽  
Author(s):  
Pier Carlo Berri ◽  
Matteo D.L. Dalla Vedova ◽  
Paolo Maggiore ◽  
Francesco Viglione

Electromechanical actuators (EMAs) based on Permanent Magnet Synchronous Motors (PMSMs) are currently employed on various aircraft systems, and are becoming more and more widespread in safety critical applications. Compared to other electrical machines, PMSM offer a high power to weight ratio and low cogging: this makes them suited for position control and actuation tasks. EMAs offer several advantages over hydraulic servoactuators, in terms of modularity, mechanical simplicity, overall weight and fuel efficiency. At the same time, their basic reliability is inherently lower compared to hydraulic actuators. Then, the use of EMAs for safety critical aircraft systems requires the adoption of risk mitigation techniques to counter this issue. In this framework, diagnostic and prognostic strategies can be used for the system health management, to monitor its behaviour in search of the early signs of the most common or dangerous failure modes. We propose a low fidelity model of a PMSM based EMA, intended for model-based diagnostic and prognostic monitoring. The model features low computational cost, allowing the execution in nearly real-time, combined with suitable accuracy in the simulation of faulty system operations. This simplified emulator is validated by comparing its behaviour to a higher fidelity model, employed as a simulated test bench.


Author(s):  
Fernando Figueroa ◽  
John Schmalzel ◽  
Mark Walker ◽  
Meera Venkatesh ◽  
Ravi Kapadia ◽  
...  

Author(s):  
Fernando Figueroa ◽  
John Schmalzel ◽  
Jonathan Morris ◽  
Mark Turowski ◽  
Richard Franzl

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