This document presents an overview of the research DFRC is planning within the Subsonic Fixed Wing (SFW) Light Weight Airframes and Propulsion.

关键词：光机电；传感器；柔性翼设计；控制反馈

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The broad objective of this grant was to develop a generally applicable theory of performance of information-level fusion that provides accurate prediction of post-fusion algorithm accuracy in uncertain environments. determines factors affecting fundamental performance tradeoffs, e.g., sample size, resolution, specificity, and sensitivity of sensors. specifies performance benchmarks allowing quantitative comparison of different fusion algorithms. provides guidelines for algorithm design and optimization. The effort focused on information theoretic fusion methods and our analysis was based on geometric properties of information. Our research has impacted application domains where information theoretic fusion is applied. These included georegistration, remote sensing, multimodality anomaly detection, visualization, and dimensionality reduction.

关键词：光机电；传感器；性能驱动；模态融合

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The building sector consumes a large part of the energy used in the United States and is responsible for nearly 40of greenhouse gas emissions. It is therefore economically and environmentally important to reduce the building energy consumption to realize massive energy savings. In this paper, a method to control room temperature in buildings is proposed. The approach is based on a distributed parameter model represented by a three dimensional (3D) heat equation in a room with heater/cooler located at ceiling. The latter is resolved using finite element methods, and results in a model for room temperature with thousands of states. The latter is not amenable to control design. A reduced order model of only few states is then derived using Proper Orthogonal Decomposition (POD). A Linear Quadratic Regulator (LQR) is computed based on the reduced model, and applied to the full order model to control room temperature.

关键词：高效节能；能源消耗；控制系统；建筑物；天花板；冷却

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Differential Global Positioning Systems (DGPS) are susceptible to outages due to blocked or missing satellite signals and/or blocked or missing DGPS correction messages. Outages arise primarily due to environmental reasons: passing under bridges, passing under overhead highway signs, adjacent foliage, etc. Generally, these outages are spatially deterministic, and can be accurately predicted. These outages distract drivers using DGPS-based driver assistive systems, and limit the system robustness. Inertial measurements have been proposed as an augmentation for DGPS. Tests have shown that error rates for even emerging technologies are still too high; a vehicle can maintain lane position for less than three to four seconds. Ring laser gyros can do the job, but $100K per axis is still too expensive for road-going vehicles. To provide robust vehicle positioning in the face of DGPS outages, the IV Lab has developed a technique by which a non-contact, 2D true ground velocity sensor is used to guide the vehicle. Although far from fully developed, the system can maintain vehicle position within a lane for GPS outages of up to 20 seconds. New dual frequency, carrier phase DGPS systems generally require less than 20 seconds to acquire a 'fix' solution after a GPS outage, so the performance of this system should be adequate for augmentation. Proposed herein is basic research which may lead to the development of an inexpensive, 2D, non-contact velocity sensor optimized for vehicle guidance during periods of DGPS outages.

关键词：光机电；传感器；GPS；差分全球定位系统(DGPS)

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Power (energy) consumption has emerged as a new challenge in the design of packet forwarding engines for next-generation Internet infrastructure. Although TCAMs are widely used for high speed packet forwarding, they suffer from high power consumption. We propose mapping state-of-the-art algorithmic solutions onto parallel architectures that are based on low-power memory such as SRAM. We exploited data structure optimization to reduce the power consumption. We formulated the problems by revisiting the conventional time-space trade-off in multibit tries.

关键词：高效节能；并行架构；多位尝试制定

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Traditional single microprocessor designs have exerted great effort to increase processor frequency and exploit instruction-level parallelism (ILP) to improve performance. However, they have arrived at a bottleneck wherein doubling the number of transistors in a serial CPU results in only a modest increase in performance with a significant increase in energy. This bottleneck has motivated us into the multicore era. With multicore, we can achieve higher throughput with acceptable power, although the core-level frequency of a multicore processor may be lower than that of a serial CPU. The switch to multicore processors implies widespread in-depth changes to software design and implementation. The popularity of multicore architectures calls for new design considerations for high-performance applications, parallel programming models, operating systems, compiler designs, and so on.

关键词：高效节能；多核系统；可扩展性

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In this paper we discuss the existence and stability of heteroclinic cycles in coupled systems and show how they can be exploited to design and fabricate a new generation of highly-sensitive, low-powered, sensor devices. More specifically, we present theoretical and experimental proof of concept that coupling-induced oscillations located near the bifurcation point of a heteroclinic cycle can significantly enhance the sensitivity of an array of magnetic sensors. In particular, we consider arrays made up of fluxgate magnetometers inductively coupled through electronic circuits.

关键词：光机电；传感器；对称诱导；异宿环

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An accurate calibration of an electric-field sensor is difficult to carry out due to challenges involved in generating a uniform electric field over the sensor volume. Additionally, capacitive coupling between the field source and the sensors and related instrumentation tends to distort the measured field further. Sensor characterization includes not only calibration, but also determination of the frequency response (both magnitude and phase), noise power spectral density, dynamic range, and linearity. In this paper, we discuss characterization techniques for an unpackaged microelectromechanical systems (MEMS) electric field sensor in a vacuum chamber. The use of oppositely charged square plates at a spacing of half the plate width is advised by the IEEE 1308-1994 standard for generation of a uniform electric field. Previously, the U.S. Army Research Laboratory (ARL) has shown that by employing guard tubes in the construction of an electric field generating chamber, the fringing fields can be controlled, and the spacing between the endplates can be increased while maintaining a uniform field. A similar, smaller apparatus for generating a uniform axial electric field was constructed to fit into a vacuum bell jar. The considerations and techniques for minimizing error due to fringing and distortion from metal conductors will be presented, along with the techniques and laboratory equipment used for characterizing the sensor.

关键词：光机电；传感器；MEMS电场；表征技术

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Building high performance homes (HPHs) that are energy efficient, durable, comfortable, and safe requires more than knowledge of building science principles. It also requires the ability to properly design, specify, install, and startup/commission new technologies and systems. Quality management systems (QMSs) provide the infrastructure necessary to ensure repeatability and to manage continual improvement to increase first time quality, reduce warranty, and increase customer satisfaction. QMSs are therefore needed as the industry shifts from conventional homes to HPHs, and ultimately to state-of-the-art homes such those meeting the U.S. Department of Energy's Challenge Home criteria. As builders and remodelers strive to build HPHs, QMS is emerging as a critical need for implementing complex, whole-house changes to the conventional design and construction processes. However, residential QMSs have most often been designed for new home construction. To address quality in existing homes in the form of scopes of work (SOWs), the NAHB Research Center began with a new construction SOW and applied it to an existing home project.

关键词：高效节能；狭小空间；质量管理；住宅建筑；改造

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GED Integrated Solutions collaborated with US window and door manufactures to investigate, design and verify technical and cost feasibility for producing high performance, high volume, low material and labor cost window, utilizing a modified window design containing a triple insulating glass unit (IGU). This window design approach when combined with a high volume IGU manufacturing system, can produce R5 rated windows for an approximate additional consumer cost of only $4/ft. when compared to conventional Low-E argon dual pane IG windows, resulting in a verify practical, reliable and affordable high performance window for public use.

关键词：高效节能；自动化；门；玻璃；绝缘材料；制造；视窗

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