دانلود رایگان مقاله لاتین تحلیل کنترل خطی هواپیما از سایت الزویر
عنوان فارسی مقاله:
مشکل از دست دادن کنترل هواپیما: تجزیه و تحلیل کنترل خطی
عنوان انگلیسی مقاله:
Airplane loss of control problem: Linear controllability analysis
سال انتشار : 2016
برای دانلود رایگان مقاله تحلیل کنترل خطی هواپیما اینجا کلیک نمایید.
مقدمه انگلیسی مقاله:
1. Introduction
Control loss of an airplane, known in literature as loss-ofcontrol, is a serious problem whose repercussions can be catastrophic. Luckily, conventional airplanes may still be controllable if one or more control surfaces fail. For example, if an airplane lost all of its control surfaces due to hydraulic failure, it may still be controllable by manipulating the engines thrust forces. There are two common incidents in history that support such a fact. In 1989, the United Airlines Flight 232 DC-10 aircraft lost flight control surfaces due to hydraulic pressure loss because of a failure in its tail-mounted engine. However, the crew managed to control the airplane until they reached an airport. Nevertheless, the aircraft lost balance just before touchdown leading to a wing-tip crash into the run way, which in turn, led to the aircraft breaking apart. But 185 people survived out of the 296 on board. The 2003 DHL A300-B4 aircraft incident is another example. The aircraft was hit by a ground-to-air missile during initial climb right after takeoff from Baghdad airport. As such, all hydraulics were lost within few seconds. However, the crew managed to land the airplane safely using only thrust controls. Of course, there are other examples of flight control failures where the crew could not avoid the worst case scenario such as the 1974 Turkish Airlines Flight 981. The DC-10 aircraft lost the cargo door, which leads to a damage in the control cables. The aircraft crashed a minute later and none of the 346 people on board survived.The above incidents among others invoked design and analysis of a thrust-only flight control system (TFCS) or a propulsion controlled aircraft (PCA). These systems have been investigated in the 1990s by Burcham et al. [5,6] and Tucker [20] at NASA Dryden Flight Research Center. They developed a computer-assisted engine control system, implemented and tested it on the F-15 fighter aircraft and the MD-11 transport aircraft. In his study of the 2003 DHL A300-B4 aircraft incident, Lemaignan [13] analyzed the applicability of TFCSs. More recently, Yamasaki et al. [22], at Mitsubishi Heavy Industries, developed a TFCS system for the Boeing 747-400 and validated it by testing in a domed simulator. On the other hand, Wilborn and Foster [21], at Boeing Company and NASA Langley Research Center, presented a quantitative measures for loss-of-control in commercial transport aircraft. They presented five envelopes relating to airplane flight dynamics, aerodynamics, structural integrity, and flight control use that can reliably identify key Loss-of-control characteristics. Also, Kwatny et al. [12] presented a nonlinear analysis for aircraft loss-of-control. They examined the ability to regulate an aircraft around stall points with emphasis on impaired aircraft and presented some examples using NASA’s generic transport model. The objective of this paper is to formulate the airplane loss of control (LOC) into a controllability framework. It is understandable that controllability of a linearized model is not necessary. That is there exists a class of systems that are linearly uncontrollable but nonlinearly controllable, see for example Sec. 3.1 in Ref. [17]. However, the linear analysis should be performed first because of its sufficiency. Then nonlinear analysis should be employed in the cases where the linear analysis fails. Therefore, the current effort is to perform linear controllability analysis for some LOC cases (e.g., no elevator) and identify situations where nonlinear analysisis required. A successive effort will be to discuss nonlinear controllability and apply it to these situations. In this work, a linear decoupled six-degrees-of-freedom flight dynamic model is considered. Controllability of the linearized model about the cruise equilibrium is assessed at no-elevator, no-aileron, no-rudder, and no-thrust situations. In particular, the landing-approach problem using TFCS is analyzed. Also, the concerns raised by Lemaignan [13] and Nguyen et al. [16] are addressed. Finally, LOC situations that necessitate nonlinear controllability analysis are provided for a successive effort.
برای دانلود رایگان مقاله تحلیل کنترل خطی هواپیما اینجا کلیک نمایید.
کلمات کلیدی:
Advanced Control of Chemical Processes 1994 https://books.google.com/books?isbn=1483297594 D. Bonvin - 2014 - Science In this paper we have not considered the measurement problem which is one of the ... The simulation results are consistent with the linear controllability analysis. Controllability analysis of linear singular delta operator systems - IEEE ... ieeexplore.ieee.org/document/6485357/ by X Dong - 2012 - Cited by 12 - Related articles This paper investigates the problem of controllability analysis for linear singular delta operator systems. Firstly, the delta operator model is set up for. Process Control: The Passive Systems Approach https://books.google.com/books?isbn=1846288932 Jie Bao, Peter L. Lee - 2007 - Technology & Engineering Therefore process controllability analysis should be performed in the process design stage. ... One approach is to solve the design/control integration problems using ... Some other methods assume a linear time invariant control structure [71]. Encyclopedia of Optimization - Page 2124 - Google Books Result https://books.google.com/books?isbn=0387747583 Christodoulos A. Floudas, Panos M. Pardalos - 2008 - Mathematics problem where the economic cost of a disturbance is balanced against the performance ... The first method [9,10] uses steady state linear controllability measures while the ... The starting point for the controllability analysis is the linear multiple ...
