Select Subject

All (8497)

Agronomy (157)

Animal Husbandry,... (64)

Aquatic Science (16)

Astronomy (36)

Aviation (21)

Basic Medicine (182)

Biology (498)

Chemical Engineering (102)

Chemistry (631)

Civil and Archite... (105)

Clinical Medicine (230)

Computer Science ... (847)

Dynamic and Elect... (120)

Earth Science (118)

Economics (65)

Education (30)

Electrics, Commun... (900)

Energy Science an... (66)

Engineering and T... (14)

Environmental Sci... (140)

Food Science and ... (63)

Forestry (36)

Hydraulic Enginee... (40)

Mechanics (240)

Metallurgical Eng... (32)

Mine Engineering ... (38)

Nuclear Science a... (21)

Pharmacy (98)

Physics (914)

Preventive Medici... (36)

Psychology (20)

Security Science ... (17)

Sports Science (6)

Surveying and Map... (15)

Textile Science a... (16)

Traditional Chine... (55)

Transportation En... (52)

Select/Unselect all

For Selected Papers

Saved Papers

Please enter a name for this paper to be shown in your personalized Saved Papers list


	1. NTSM based finite-time control for 6DOF spacecraft formation flying system
	Lan Qixun,Li Shihua
	Aviation 13 December 2012
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (4K B)

	Abstract:This paper considers the finite-timecontrol (FTC) problem of 6DOF spacecraft formation flying (SFF)system in the presence of externaldisturbances. Firstly, a nonsingularterminal sliding mode (NTSM) technique a finite time controller is proposed for 6DOF SFF system.Secondly, a finite-time disturbance observer (FTDOB) is introducedto estimate the disturbances , then acomposite controller which consists of a feedback controller basedon NTSM method and feed-forward compensation term based on FTDOBtechnique is obtained to ensure that the 6DOF spacecraft canreach the desired formation in finite time. The merit of theproposed method is that chattering is substantially reduced sincethe switching gain of the controller is only requiredto be greater than the bound of disturbance estimation error ratherthan that of disturbance. Finally,the effectiveness of the proposed methods are shown bysimulation results.
	TO cite this article:Lan Qixun,Li Shihua . NTSM based finite-time control for 6DOF spacecraft formation flying system[OL].[13 December 2012] http://en.paper.edu.cn/en_releasepaper/content/4501134


	2. Review on the Recent Development of Multi-mode Combined Detonation Engine
	JIN Le,FAN Wei,WANG Ke
	Aviation 03 March 2012
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (4K B)

	Abstract:In the next few years, the development of hypersonic aircraft will be the priority of national defense strategy of many countries, and the significance of the propulsion system applied on the aircraft is self-evident. At present, there are no propulsion systems for the aircraft can be used independently in wide range of Mach numbers and flight envelop. The multi-mode combined detonation engine, which consists of four modes, is a novel propulsion concept proposed at the beginning of this century for potential application on hypersonic cruise or space access. The multi-mode combined detonation engine is thought to be a promising propulsion system which can be used independently in wide range of Mach numbers and flight envelop. Recently, many countries extremely valued the development of multi-mode combined detonation engine and much progress is obtained. A review is made to the recent development of the multi-mode combined detonation engine in this study. The superiority and disadvantages are comparatively analyzed and the major progress for each mode is detailed introduced in the following text. Also, the problems need to be attention in the future development for multi-mode combined detonation engine is discussed.
	TO cite this article:JIN Le,FAN Wei,WANG Ke. Review on the Recent Development of Multi-mode Combined Detonation Engine[OL].[ 3 March 2012] http://en.paper.edu.cn/en_releasepaper/content/4469840


	3. Towards Tightening Worst Case End-to-End Delay Estimates for AFDX Network
	Hu Guangyu,Li Jian,Hu Fei,Liu Xue,Zhu Guchuan,ZHU Guchuan
	Aviation 08 December 2011
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (4K B)

	Abstract:Avionics Full Duplex Switched Ethernet (AFDX) network is an emerging Ethernet media based technology for the next generation avionic databus. The key problem of AFDX network analysis is to evaluate the worst case end-to-end data transmission delay in order to meet safety-critical application communication requirement, such as the flight control command. In this paper, we use a more accurate Virtual Link (VL) model employing Generic Cell Rate Algorithm (GCRA) to derive tighter worst case end-to-end delay bound. We further verify the proposed approach on a simulation platform. The results prove that the delay performance can be improved by the new GCRA model.
	TO cite this article:Hu Guangyu,Li Jian,Hu Fei, et al. Towards Tightening Worst Case End-to-End Delay Estimates for AFDX Network[OL].[ 8 December 2011] http://en.paper.edu.cn/en_releasepaper/content/4452639


	4. Near Space SAR Imaging Using Subaperture Technique
	Xiao Xin,Jing Xiaojun
	Aviation 06 December 2011
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (4K B)

	Abstract:Near space, airspace above the ground about 20-100 km, is higher than existing aircraft flight height and lower than existing low orbit satellite, including Stratosphere， mesosphere and part of ionosphere. Near space have some unique advantage, but currently still no effective development and application, while troposphere and low-orbit space is increasingly scarce. Near space SAR geometric model is similar with the aircraft SAR, but little difference brings completely different result. This paper discusses the near space new environment character and proposes that full aperture should be divided into subaperture to adapt new environment character. Then the novel subaperture technique is applied to Range Doppler Algorithm (RDA), and a sub-band combination technique is introduced to compose the subaperture images. Simulation results show that the proposed method indeed seems to be a promising solution to near space SAR imaging.
	TO cite this article:Xiao Xin,Jing Xiaojun. Near Space SAR Imaging Using Subaperture Technique[OL].[ 6 December 2011] http://en.paper.edu.cn/en_releasepaper/content/4452905

Alert Name:
Alerting to:
Authentication email will be sent to your email address in 24 hours
Frequency:
Email Message Format:	Plain text Graphical(HTML)

Complete the form below and we will recommend the selected titles to your friends on your behalf. * Indicates a required field.
Your name*:
Your email address*:
Recipient's name*:
Recipient's email address*:
(multiple recipient's names and email addresses should be separated with semicolons)
Your comments:	I thought you would find the page(s) useful.

Your name:
Your email address:
Recipient's name:
Recipient's email address:
(multiple recipient's names and email addresses should be separated with semicolons)
Your comments:	I thought you would find this page useful.

Disclaimer: This message was sent to your friend using the "Send it to a friend" facility on the Sciencepaper Online’ WWW site, http://www.paper.edu.cn/en. The Sciencepaper Online is not responsible for the content of this email, and anything said in this email does not necessarily reflect the Sciencepaper Online's views.

	Check out RSS, or use RSS reader to subscribe this item