2017 IEEE National Aerospace and Electronics Conference (NAECON)最新文献_第3页

Dynamic modeling and nonlinear model predictive control of hybrid actuator systems 混合动力作动器系统的动态建模与非线性模型预测控制

2017 IEEE National Aerospace and Electronics Conference (NAECON) Pub Date : 2017-06-01 DOI: 10.1109/NAECON.2017.8268756

Seyed Ata Raziei, Zhenhua Jiang

{"title":"Dynamic modeling and nonlinear model predictive control of hybrid actuator systems","authors":"Seyed Ata Raziei, Zhenhua Jiang","doi":"10.1109/NAECON.2017.8268756","DOIUrl":"https://doi.org/10.1109/NAECON.2017.8268756","url":null,"abstract":"Hybrid actuators can provide better performances than hydraulic or electromechanical actuators alone; however, control of these hybrid systems is more challenging. This paper presents the application of model predictive control (MPC) on a hybrid actuator system to coordinate multiple control objectives. MPC has advantages over traditional controllers such as a PID in controlling non-linear multi-input, multi-output systems. MPC proactively updates the control inputs in a specific time interval by observing the current state of the system, predicting the future behavior, and solving an optimization problem repeatedly with consideration of pre-defined control objectives. In this paper, a high-fidelity dynamic model of the hybrid actuator system will be developed and a simplified, reduced-order model will be derived for use in the MPC formulation process. The detailed process of designing an MPC controller, which may consist of mathematical formulation of an optimization problem and numerical methods to find the optimal solution, will be discussed in detail. Simulation results will be presented to compare the performances of the MPC with PID controllers, and the effects of different controller parameters on the system performances will be discussed.","PeriodicalId":306091,"journal":{"name":"2017 IEEE National Aerospace and Electronics Conference (NAECON)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121160022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Convolutional neural networks on small unmanned aerial systems 卷积神经网络在小型无人机系统中的应用

2017 IEEE National Aerospace and Electronics Conference (NAECON) Pub Date : 2017-06-01 DOI: 10.1109/NAECON.2017.8268760

Joshua M. Kaster, James Patrick, H S Clouse

引用次数: 6

A new model for simulation of scattered EM fields from a conducting cylinder in rotation and translation using static data 用静态数据模拟导电圆柱旋转和平移散射电磁场的新模型

2017 IEEE National Aerospace and Electronics Conference (NAECON) Pub Date : 2017-06-01 DOI: 10.1109/NAECON.2017.8268775

Esmail M. M. Abuhdima, R. Penno

引用次数: 3

Optimal sensor geometry for tomographic below ground imaging of objects in a region of interest 对感兴趣区域的物体进行层析成像的最佳传感器几何形状

2017 IEEE National Aerospace and Electronics Conference (NAECON) Pub Date : 2017-06-01 DOI: 10.1109/NAECON.2017.8268788

Abdulhakim Daluom, M. Wicks, H. Abdelbagi, Abdunaser Abdusamad, Muftah Akroush, Turki M. Alanazi

{"title":"Optimal sensor geometry for tomographic below ground imaging of objects in a region of interest","authors":"Abdulhakim Daluom, M. Wicks, H. Abdelbagi, Abdunaser Abdusamad, Muftah Akroush, Turki M. Alanazi","doi":"10.1109/NAECON.2017.8268788","DOIUrl":"https://doi.org/10.1109/NAECON.2017.8268788","url":null,"abstract":"In this paper, we present a unique Ground Penetrating Radar (GPR) technique currently under development to image deeply buried targets over relatively small areas of regard. This GPR computes the optimal sensor geometry for a given bistatic and multi-static radar distribution of transmitters and receivers operating in the microwave band of frequencies. There are M receivers, and they can be arranged arbitrarily. In addition to that, we have N transmitters that we can also arrange in the same way. Each receiver can process all frequencies from the multiple transmitters. The transmitters are deployed above ground, while the receivers are in the space between the surface of the ground and the multitude of transmitters. Radio frequency (RF) tomography is developed using Green's functions and Maxwell's equations to develop an algorithm for imaging underground targets. The targets are assumed to be inside a region of interest (ROI). The design includes different transmitter (Tx) and receiver (Rx) geometries, such as concentric circles and concentric squares. Based on these different geometries we determine which distribution is best for imaging depths of shallow buried targets. Also, the development of the optimal sensor geometry is investigated in order to provide the best configurations and increase overall tomographic imagery. Simulation results show excellent performance in the absence of significant unknown disturbances.","PeriodicalId":306091,"journal":{"name":"2017 IEEE National Aerospace and Electronics Conference (NAECON)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125331839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Differential flatness based hybrid PID/LQR flight controller for complex trajectory tracking in quadcopter UAVs 基于差分平坦度的PID/LQR混合飞行控制器在四轴无人机复杂轨迹跟踪中的应用

2017 IEEE National Aerospace and Electronics Conference (NAECON) Pub Date : 2017-06-01 DOI: 10.1109/NAECON.2017.8268755

Rumit Kumar, Matthew Dechering, Abhishek Pai, Austin Ottaway, Mohammadreza Radmanesh, Manish Kumar

引用次数: 8

A wideband mmWave antenna element with an unbalanced feed 不平衡馈电的宽带毫米波天线元件

2017 IEEE National Aerospace and Electronics Conference (NAECON) Pub Date : 2017-06-01 DOI: 10.1109/NAECON.2017.8268771

D. Landgren, Kevin R. Cook, D. Dykes, J. Perez, P. R. Bowden, K. Allen

引用次数: 8

An efficient FPGA-based direct linear solver 一种高效的基于fpga的直接线性求解器

2017 IEEE National Aerospace and Electronics Conference (NAECON) Pub Date : 2017-06-01 DOI: 10.1109/NAECON.2017.8268762

Zhenhua Jiang, Sayed Ata Raziei

{"title":"An efficient FPGA-based direct linear solver","authors":"Zhenhua Jiang, Sayed Ata Raziei","doi":"10.1109/NAECON.2017.8268762","DOIUrl":"https://doi.org/10.1109/NAECON.2017.8268762","url":null,"abstract":"This paper presents a novel method to finding the solution to a system of linear equations efficiently by using a reconfigurable hardware based real-time computational solver. The presented linear solver is to directly solve the system of linear equations through repetitively applying Gauss-Jordan elimination to each column of an augmented matrix in parallel on reconfigurable hardware, which can greatly accelerate the solution procedure. Backward substitution is not needed, so the computing latency can be further reduced. The main components of the hardware solver include parallel data processing modules, reusable memory blocks and flexible control logic units. By considering pivoting, this solver can avoid the potential problem of increasingly-large numbers after row operations. The salient feature is that the latency of this solver is really low through parallel processing, deep pipelining and flexible use of memory blocks. For instance, the total latency of this linear solver is controlled below 1000 clock cycles for a dense system of dimension 32. On a Xilinx Vertex 6 FPGA of 200MHz, which has a clock cycle of 5ns, the minimum latency can be as low as 5 microseconds. Applications of this hardware accelerated linear solver may include, but are not limited to, real-time least square estimation for sensor data, digital signal / video processing and real-time circuit simulation. It can also find wide applications in mathematical computing such as finding the inverse of a matrix, computing determinants or ranks of matrices, etc.","PeriodicalId":306091,"journal":{"name":"2017 IEEE National Aerospace and Electronics Conference (NAECON)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124175538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Nonlinear adaptive control for lateral dynamics with fixed roll angle of hypersonic vehicles at subsonic speeds 高超声速飞行器亚声速下固定横摇角横向动力学非线性自适应控制

2017 IEEE National Aerospace and Electronics Conference (NAECON) Pub Date : 2017-06-01 DOI: 10.1109/NAECON.2017.8268757

Turki Alsuwian, R. Ordóñez, L. Jacobsen

引用次数: 0

Cognitive domain ontologies in a memristor crossbar architecture 忆阻器交叉栅结构中的认知域本体

2017 IEEE National Aerospace and Electronics Conference (NAECON) Pub Date : 2017-06-01 DOI: 10.1109/NAECON.2017.8268748

C. Yakopcic, Nayim Rahman, Tanvir Atahary, T. Taha, Scott Douglass

{"title":"Cognitive domain ontologies in a memristor crossbar architecture","authors":"C. Yakopcic, Nayim Rahman, Tanvir Atahary, T. Taha, Scott Douglass","doi":"10.1109/NAECON.2017.8268748","DOIUrl":"https://doi.org/10.1109/NAECON.2017.8268748","url":null,"abstract":"Cognitive agents are typically utilized in autonomous systems for automated decision making. These systems interact at real time with their environment and are generally heavily power constrained. Thus, there is a strong need for a real time agent running on a low power platform. This paper examines how some of the components of a cognitive agent can be executed in memristor crossbar circuits capable of highly parallel instruction execution. The agent examined is the Cognitively Enhanced Complex Event Processing (CECEP) architecture. This is an autonomous decision support tool that reasons like humans and enables enhanced agent-based decision-making. It has applications in a large variety of domains including autonomous systems, operations research, intelligence analysis, and data mining. One of the most time consuming and key components of CECEP is the mining of knowledge from a repository described as a Cognitive Domain Ontology (CDO). We show that CDOs can be implemented using memristor crossbars using two different approaches. The first is a lookup table approach that is stored in a high density memristor matching circuit. The second in a multilayer perceptron implementation that uses an ex-situ memristor based neuromorphic system. In each case, the example CDOs are implemented successfully.","PeriodicalId":306091,"journal":{"name":"2017 IEEE National Aerospace and Electronics Conference (NAECON)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116978799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

New high-extinction wire-grid polarizers for polarimetrie W-band radar 偏振w波段雷达用新型高消光线栅偏振器

2017 IEEE National Aerospace and Electronics Conference (NAECON) Pub Date : 2017-06-01 DOI: 10.1109/NAECON.2017.8268797

W.-D. Zhang, A. Mingardi, E. R. B. Terahertz

引用次数: 2