scholarly journals A Model Matching STR Controller for High Performance Aircraft

2013 ◽  
Vol 2013 ◽  
pp. 1-8
Author(s):  
Adel A. Ghandakly ◽  
Jason A. Reed
Keyword(s):  
Flight Control ◽  
High Performance ◽  
Performance Comparison ◽  
Recursive Least Squares ◽  
Superior Performance ◽  
Model Matching ◽  
Detailed Model ◽  
Aircraft Flight Control ◽  
Self Tuning ◽  
High Performance Aircraft

This paper presents a development, as well as an investigation of a Model Matching Controller (MMC) design based on the Self-Tuning Regulator (STR) framework for high performance aircraft with direct application to an F-16 aircraft flight control system. In combination with the Recursive Least Squares (RLS) identification, the MMC is developed and investigated for effectiveness on a detailed model of the aircraft. The popular robust Quantitative Feedback Theory (QFT) controller is also outlined and used to represent a baseline controller, for performance comparison during four simulated test flight maneuvers. In each of the four maneuvers, the proposed MMC provided consistently stable and satisfactory performance, including the challenging pull-up and pushover maneuvers. The baseline stationary controller has been found to become unstable in two of the four maneuvers tested. It also performs satisfactorily-to-arguably poorly in the remaining two as compared to the MMC. Simulation results presented in this investigation support a clear argument that the proposed MMC provides superior performance in the realm of automatic flight control.

scholarly journals Itaconate Based Elastomer as a Green Alternative to Styrene–Butadiene Rubber for Engineering Applications: Performance Comparison

Processes ◽  
2020 ◽  
Vol 8 (12) ◽  
pp. 1527
Author(s):  
Liwei Li ◽  
Haijun Ji ◽  
Hui Yang ◽  
Liqun Zhang ◽  
Xinxin Zhou ◽  
...  
Keyword(s):  
Carbon Black ◽  
High Performance ◽  
Weight Ratio ◽  
Rolling Resistance ◽  
Performance Comparison ◽  
Superior Performance ◽  
Feed Ratio ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Styrene Butadiene

In response to increasingly stringent requirements for the sustainability and environmental friendliness of the rubber industry, the application and development of bio-based elastomers have received extensive attention. In this work, we prepared a new type of bio-based elastomer poly(dibutyl itaconate-butadiene) copolymer (PDBIB) nanocomposite using carbon black and non-petroleum-based silica with a coupling agent. Using dynamic thermodynamic analysis (DMTA) and scanning electron microscope (SEM), we studied the effects of feed ratio on dynamic mechanical properties, micro morphology, and filler dispersion of PDBIB composites. Among them, silica-reinforced PDBIB60 (weight ratio of dibutyl itaconate to butadiene 40/60) and carbon black-reinforced PDBIB70 (weight ratio of dibutyl itaconate to butadiene 30/70) both showed excellent performance, such as tensile strength higher than 18 MPa and an elongation break higher than 400%. Compared with the widely used ESBR, the results showed that PDBIB had better rolling resistance and heat generation than ESBR. In addition, considering the development of green tires, we compared it with the solution polymerized styrene–butadiene rubber with better comprehensive performance, and analyzed the advantages of PDBIB and the areas to be improved. In summary, PDBIB prepared from bio-based monomers had superior performance and is of great significance for achieving sustainable development, providing a direction for the development of high-performance green tire and holding great potential to replace petroleum-derived elastomers.

Adaptive Incremental Backstepping Flight Control for a High-Performance Aircraft with Uncertainties

2016 ◽  
Author(s):  
Pieter van Gils ◽  
Erik-Jan Van Kampen ◽  
Coen C. de Visser ◽  
Q Ping Chu
Keyword(s):  
Flight Control ◽  
High Performance ◽  
High Performance Aircraft

Real-Time Self-Tuning Speed Controller: Performance Comparison between Engine Fuelled with Palm Methyl Esters and Petroleum Diesel

2015 ◽  
Vol 815 ◽  
pp. 408-412
Author(s):  
M.N. Azuwir ◽  
Mohd Sazli Saad ◽  
Mohd Zakimi Zakaria
Keyword(s):  
Real Time ◽  
Least Squares Method ◽  
Methyl Esters ◽  
Performance Comparison ◽  
Parameters Estimation ◽  
Recursive Least Squares ◽  
Model Parameters ◽  
Automotive Engine ◽  
Speed Controller ◽  
Self Tuning

This paper investigates the performance of a real-time self-tuning speed controller designed to track and regulate at various engine speeds. The controller was tested with an automotive engine fuelled with petroleum diesel and and palm oil biodiesel (Palm Methyl Esters) within speed range of 1800 rpm to 2400 rpm. A self-tuning control algorithm based on pole assignment method together with on-line model parameters estimation strategy based on the recursive least squares method are adopted. The ability of the controller to track, regulate at various engine speed and also to reject disturbances applied for both type of fuel are compared and presented. The results confirmed that the controller performed very satisfactorily.

Maneuver load alleviation for high performance aircraft robust to flight condition variations

2018 ◽  
Vol 25 (5) ◽  
pp. 1044-1057 ◽  
Author(s):  
Hongkun Li ◽  
Rui Huang ◽  
Yonghui Zhao ◽  
Haiyan Hu
Keyword(s):  
Flight Control ◽  
Recurrent Neural Networks ◽  
High Performance ◽  
Bending Moments ◽  
Linear Parameter ◽  
Military Aircraft ◽  
Robust Controller ◽  
Linear Parameter Varying ◽  
Maneuver Load ◽  
High Performance Aircraft

The design of a robust maneuver load alleviation (MLA) system for a high-performance aircraft is studied in this paper. First, the aeroservoelastic (ASE) models of a high-performance military aircraft in climbing maneuver at varying Mach numbers are established. Then, a linear parameter-varying (LPV) model of the ASE systems is constructed and an [Formula: see text] robust controller is designed based on the LPV model. The robust control is realized via a pair of outboard ailerons to alleviate the wing-root bending moments in the climbing maneuvers. To compensate the loss of performance in the load alleviation, a controller based on recurrent neural networks is designed in the flight control. Finally, some numerical simulations are made to testify the performance and robustness of the MLA system.

Optimal and Robust Solutions for Longitudinal Flight Control of a Canard-Configured High Performance Aircraft

2019 ◽  
Author(s):  
Fatima Shoaib ◽  
M. Arsalan Khawaja ◽  
Hafiz Zeeshan Iqbal Khan ◽  
M. Farooq Haydar ◽  
Jamshed Riaz
Keyword(s):  
Flight Control ◽  
High Performance ◽  
Robust Solutions ◽  
High Performance Aircraft

scholarly journals Robust nonlinear flight control of a high-performance aircraft

2005 ◽  
Vol 13 (1) ◽  
pp. 15-26 ◽  
Author(s):  
Qian Wang ◽  
R.F. Stengel
Keyword(s):  
Flight Control ◽  
High Performance ◽  
High Performance Aircraft

scholarly journals Transformative Use of Additive Technology in Design and Manufacture of Hydraulic Actuator for Fly-by-Wire System

2021 ◽  
Vol 11 (11) ◽  
pp. 4772
Author(s):  
Krzysztof Warzocha ◽  
Jerzy Szura ◽  
Piotr Bąk ◽  
Paweł Rzucidło ◽  
Tomasz Rogalski
Keyword(s):  
Flight Control ◽  
Tensile Testing ◽  
High Performance ◽  
Strength Properties ◽  
Hydraulic Actuator ◽  
Aircraft Flight Control ◽  
Static Tensile ◽  
Goodman Diagram ◽  
Design And Manufacture ◽  
The Impact

In this paper, the results of research on additively manufactured aerospace parts made of maraging steel are presented. This state-of-the-art technology seems to have the highest potential for practical use in the field of ultra-light and high-performance aerospace hydraulic parts. The strength properties of representative specimens made with steel 1.2709 were investigated. The researchers conducted static tensile testing, fatigue tensile testing, and pressure impulse testing. A Goodman diagram was plotted to visualize the impact of the building orientation vs. load character on the fatigue strength of the additive manufacturing (AM) specimens. Based on the research carried out on the strength of the AM samples, an aircraft flight control actuator was designed to achieve the highest level of safety integrity along with the greatest simplicity and lowest weight relative to hydraulic actuators manufactured using classical methods. The entire design process was integrated with the manufacturing process to achieve this target.

Intelligent adaptive nonlinear flight control for a high performance aircraft with neural networks

2006 ◽  
Vol 45 (2) ◽  
pp. 225-247 ◽  
Author(s):  
Aydogan Savran ◽  
Ramazan Tasaltin ◽  
Yasar Becerikli
Keyword(s):  
Neural Networks ◽  
Flight Control ◽  
High Performance ◽  
High Performance Aircraft
Sign in / Sign up

Export Citation Format

Share Document