Spelling suggestions: "subject:"positionation error""
1 |
POSITION SENSORLESS CONTROL OF NON-SALIENT PERMANENT MAGNET SYNCHRONOUS MACHINEChretien, Ludovic 18 May 2006 (has links)
No description available.
|
2 |
Structured Neural Networks For Modeling And Identification Of Nonlinear Mechanical SystemsKilic, Ergin 01 September 2012 (has links) (PDF)
Most engineering systems are highly nonlinear in nature and thus one could not
develop efficient mathematical models for these systems. Artificial neural
networks, which are used in estimation, filtering, identification and control in
technical literature, are considered as universal modeling and functional
approximation tools. Unfortunately, developing a well trained monolithic type
neural network (with many free parameters/weights) is known to be a daunting
task since the process of loading a specific pattern (functional relationship) onto a
generic neural network is proven to be a NP-complete problem. It implies that if
training is conducted on a deterministic computer, the time required for training
process grows exponentially with increasing size of the free parameter space (and
the training data in correlation). As an alternative modeling technique for
nonlinear dynamic systems / this thesis proposed a general methodology for
structured neural network topologies and their corresponding applications are
realized. The main idea behind this (rather classic) divide-and-conquer approach is to employ a priori information on the process to divide the problem into its
fundamental components. Hence, a number of smaller neural networks could be
designed to tackle with these elementary mapping problems. Then, all these
networks are combined to yield a tailored structured neural network for the
purpose of modeling the dynamic system under study accurately. Finally,
implementations of the devised networks are taken into consideration and the
efficiency of the proposed methodology is tested on four different types of
mechanical systems.
|
3 |
Air Data System Calibration For Military Transport Aircraft Modernization ProgramOzer, Huseyin Erman 01 January 2013 (has links) (PDF)
This thesis presents the calibration processes of the pitot-static system, which is a part of the air data system of a military transport aircraft through flight tests. Tower fly-by method is used for air data system calibration. Altitude error caused by the position of the static port on the aircraft is determined by analyzing the data collected during four sorties with different weight, flap and landing gear configurations. The same data has been used to determine the airspeed measurement error. It has been shown that both the altitude and airspeed errors are within the allowable limits specified by FAR 25. Same method is also used for trailing cone calibration that is used for high altitude test flights for RVSM certification.
|
Page generated in 0.0636 seconds