Li Z.,Motive |
Kapur K.C.,University of Washington
IIE Transactions (Institute of Industrial Engineers) | Year: 2012
This article proposes to use the theory and methods of fuzzy sets to model the reliability of a component or system experiencing continuous stochastic performance degradation. The performance characteristic variable, which indicates the continuous performance levels of degradable systems, is used to fuzzify the states of a component or system. The concept of an engineering or technological performance variable is understood by both customers and system designers and can be used to represent different degrees of success. Thus, the imprecision in the meaning of success/failure is quantified through the fuzzy success/failure membership function, which is defined over the performance characteristic variable. The proposed fuzzy reliability measures provide an alternative to model the continuous state behavior for a component or system as it evolves from a binary state to a multi-state and finally to a fuzzy state. The dynamic behavior of fuzzy reliability is investigated using the concept of a fuzzy random variable under appropriate stochastic performance degradation processes. This article also develops some reliability performance metrics that are able to capture the cumulative experiences of customers with the system. In addition, the perception and utility from the customers are utilized to develop customer-centric reliability performance measures. © 2012 "IIE". Source
Laldin O.,Purdue University |
Moshirvaziri M.,Motive |
Trescases O.,University of Toronto
IEEE Transactions on Power Electronics | Year: 2013
This study deals with the optimal control of hybrid energy storage systems for electric vehicle applications. These storage systems can capitalize on the high specific energy of Lithium-Ion batteries and the high specific power of modern ultracapacitors. The new predictive algorithm uses a state-based approach inspired by power systems optimization, organized as a probability-weighted Markov process to predict future load demands. Decisions on power sharing are made in real time, based on the predictions and probabilities of state trajectories along with associated system losses. Detailed simulations comparing various power sharing algorithms are presented, along with converter-level simulations presenting the response characteristics of power sharing scenarios. The full hybrid storage system along with the mechanical drivetrain is implemented and validated experimentally on a 500 W, 50 V system with a programmable drive cycle having a strong regenerative component. It is experimentally shown that the hybrid energy storage system runs more efficiently and captures the excess regenerative energy that is otherwise dissipated in the mechanical brakes due to the battery's limited charge current capability. © 1986-2012 IEEE. Source
Agency: Cordis | Branch: FP7 | Program: CSA-CA | Phase: HEALTH.2012.4.1-4 | Award Amount: 1.19M | Year: 2012
Although the EU has been funding superb health research, the general public who stand to benefit most, are frequently unaware of the research that is conducted on their behalf. Communications are becoming more social, digital and interactive. We propose a Sharing Approach to Promoting Science (ASAPS) that sets us apart from others because we aim to engage our audience from the outset and embed them in the creation of idea and content. We will use digital technologies, social media, user-experience design, and multiplatform story telling to increase the visibility of collaborative Europe wide aging research and technology development, that has real relevance for the general public. One of the primary ways in which older adults use the internet is to educate themselves regarding their health. We will deliver a sustainable digital platform, an interactive website, a multi-lingual package of films (3 viral films, 3 shorts, a 60 minute documentary), mobile apps, events and to address the digital divide more traditional media. Our approach is innovative and our consortium comprising, aging experts, world class scientists, a European network representing 160 ageing organizations with access to 28 million people over 50, award winning media professionals including a creative communications agency, a digital design company (specialists in interaction design for social web) and an award-winning factual film production are perfectly qualified to deliver our innovative Sharing Age campaign.
Motive | Date: 2012-01-20
An air conditioning unit, which can be located in an enclosed environment comprising at least one duct through which a heat transfer fluid flows. The duct is affected sequentially by at least one compressor, for raising the temperature and pressure of the heat transfer fluid in the gaseous state, at least one condenser, for carrying off heat from the heat transfer fluid and its passage from the gaseous state to the liquid state, at least one lamination element, for lowering the pressure of the heat transfer fluid in the liquid state, and at least one evaporator, for absorbing heat by means of the passage of the heat transfer fluid from the liquid state to the gaseous state. The air conditioning unit comprises elements of natural, not forced, collection and conveyance, toward the condenser, of condensed water which may have formed along the outer surfaces of the evaporator.
Motive | Date: 2013-07-23
An electric motor with onboard inverter, comprising a motor body which is associated with at least one output shaft and supports an inverter for adjusting the speed of the output shaft; the electric motor comprises a remote control unit of the wireless type for the inverter.