Gear Library Research Articles

Development of Terminology in Gearing and Power Transmissions. Part 1. Development of the Gearing Terminology by IFToMM Permanent Commission Standardization of Terminology on TMM

Рассматриваются проблемы развития терминологии в области зубчатых передач и трансмиссий. С привлечением широкого круга информационных источников (международные и национальные стандарты, справочники; словари по механике, машиностроению, теории механизмов и машин, международные трансляторы, сборники рекомендуемых терминов и др.) излагаются и анализируются подходы и этапы: (а) становления и развития терминологии по зубчатым передачам: в рамках деятельности Постоянной комиссии Международной федерации по содействию развитию науки о механизмах и машинах (IFToMM) «Стандартизация терминологии по ТММ» (РС А); (б) сбор и анализ информации, компоновка структуры; периодическое, по мере накопления терминологического материала, обновление содержания словаря-справочника по зубчатым передачам; (в) идентификация, классификация и описание видов повреждений зубчатых колес в процессе разработки Межгосударственного стандарта по видам повреждений зубчатых колес. Анализируется процесс поэтапной разработки терминологии по ТММ Постоянной комиссией IFToMM PC A, начиная с момента ее образования (1969 г.) по настоящее время (2016 г.), с акцентом на разработку терминологии по зубчатым передачам. Показан механизм подготовки, корректировки и систематического обновления, а также редактирования терминологических текстов языковыми редакторами. Приводится информация о разработке и пользовании электронным словарем IFToMM. Обсуждается применение нового онлайн-редактора терминологического словаря IFToMM - Thesaurus Editor (Thedi), встроенного в электронную библиотеку Digital Mechanism and Gear - Library (DMG-Lib). Указанный текстовый редактор предназначен для использования Постоянной комиссией IFToMM по стандартизации терминологии, позволяя более эффективно работать с терминологическим словарем IFToMM с использованием, наряду с официальными языками IFToMM, других языков.

Fuzzy Neural Network based Real-Time Driver Fatigue Detection and Warning System using EEG Waves

Driving fatigue has been considered as a significant risk factor in transportation accidents, and the development of the human cognitive State based on Electro Encephalo Gram (EEG) has become a major focus in the field of driving safety for many drivers. In adaptive online prediction framework which is capable of capturing subject-specific predictive patterns autonomously by constructing a subject-specific pattern library, based on which a probabilistic prediction rule is established. A real-time wireless Electro Encephalo Gram (EEG) based Brain Computer Interface (BCI) system for drowsiness detection has been proposed to reduce the time delay. A new method for driver fatigue detection based on EEG waves using Recurrent Self-Evolving Fuzzy Neural Network (RSEFNN)is proposed. The model uses Mindwave to collect the attention waves of EEG from the left prefrontal lobe of the subject, and measures the data when the subject is in the State of concentration, relaxation, fatigue and sleep. The Mindwave device and Matlab is interfaced using the Think Gear Library module. The correlation coefficient of the driver attention is classified to detect driver fatigue. Thus the system using brain wave sensor warns the driver when he/she feels drowsy.

Multi-Domain Unified Modeling and Simulation for Aircraft Landing Gear Using Modelica

Modern products become more and more complex, the modeling and simulation of them are carried out with different software on heterogeneous platforms, which always caused the heterogeneous data, separated disciplines and cannot obtain the result of unified model correctly. Therefore, a Modelica-based modeling and simulation method for aircraft landing gear is proposed. The landing gear library based on Modelica was established. The unified physical model of landing gear which is composed of structural, thermodynamics and hydromechanics disciplines is constructed. The aircraft landing process, the track of retraction mechanism and the impact work amount of the shock absorber are obtained through multi-domain unified simulation, which provides references for deisgners.

Application of computational kinematics in the digital mechanism and gear library DMG-Lib

The DMG-Lib is an interdisciplinary project that was started to collect and preserve knowledge concerning mechanical devices. In contrast to common digital libraries an efficient problem oriented information retrieval will be supported. The realization of the long-term project is only possible by means of extensive employment of computational kinematics, which opens up multifaceted prospects—especially according to the efficiency of the workflow and the efficiency of the access to the knowledge space. Aside from a common survey of the DMG-Lib project the paper shows, how kinematic models are extracted, stored and applied. The described approaches are practically proved or work in progress as well as future work which shall be discussed on the workshop.