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Guidance of Unmanned Air Vehicles Based on Fuzzy Sets and Fixed Waypoints

Mario Innocenti, Lorenzo Pollini, Demetrio Turra
2004 Journal of Guidance Control and Dynamics  
adequate disturbance rejection and robustness.  ...  The procedure is based on a fuzzy controller that commands the aircraft, via its autopilot, to approach a specified set of waypoints.  ... 
doi:10.2514/1.2651 fatcat:oooo57tb7jennp372nahbufb7u

Robust Height Control System Design for Sea-Skimming Missiles

Priyamvada K. S., Varghese Olikal, S. E. Talole, S. B. Phadke
2011 Journal of Guidance Control and Dynamics  
The estimated disturbances can then be canceled in real time using a disturbance rejection control approach.  ...  It can be observed that g;(.) is a nonlinear function with a linear interval near the origin.  ... 
doi:10.2514/1.53577 fatcat:kvpgwdam6ra5jpo43u2q4ylnzu

Adaptable method of managing jets and aerosurfaces for aerospace vehicle control

1991 Journal of Guidance Control and Dynamics  
Sideslip disturbances were effectively rejected through- out the simulation. Figure 5 indicates that the vehicle translational state fol- lowed the commanded trajectories (dotted curves).  ...  A vehicle model adapted from Space Shuttle aerodynamic data is employed in simulation examples that drive the actuator selection with a six-axis vehicle controller tracking a scheduled re-entry trajectory  ... 
doi:10.2514/3.20603 fatcat:ad5tpywnb5ezddyafeijyuy3ue

Applications of payload directed flight

Corey Ippolito, Matt Fladeland, Yoo Hsiu Yeh
2009 2009 IEEE Aerospace conference  
Payload directed flight systems can thus provide guidance, navigation, and control for vehicle platforms hosting a suite of onboard payload sensors.  ...  Tighter integration between sensor and machine requires definition of specific sensor-directed control modes to tie the sensor data directly into a vehicle control structures throughout the entire control  ...  However, general approaches for robust control formulation and disturbance rejection may be critical for successful completion of these missions.  ... 
doi:10.1109/aero.2009.4839612 fatcat:hblof3rgsva5fhlgo4jhvdhwhm

Disturbance Estimation and Rejection for High-Precision Multirotor Position Control [article]

Daniel Hentzen, Thomas Stastny, Roland Siegwart, Roland Brockers
2019 arXiv   pre-print
In this paper, we present the design and experimental comparison of Model Predictive and PID multirotor position controllers augmented with a disturbance estimator to reject strong wind gusts up to 12  ...  This allows to draw a conclusion on whether potential performance improvements justify the increased computational complexity of MPC for multirotor position control and UKF for disturbance estimation.  ...  ACKNOWLEDGMENT This research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration.  ... 
arXiv:1908.03166v1 fatcat:ozsczzgz3rfinpwx3rvduujdju

Comparative Account of Robust H∞ Techniques for Missile Autopilot Design

PSR Srinivasa Sastry, SK Ray, G. Mallikarjuna Rao, S. K. Biswas
2019 International Journal of Image Graphics and Signal Processing  
H∞ control techniques are prominently used as solutions for flight control problems.  ...  A comparative account of modern control methods is presented on the basis of system performance and robustness, which will be helpful in the selection of the appropriate design method for specific application  ...  Near Space Interceptor based on Galerkin Simultaneous Policy Update Algorithm(GSPUA) [25] Nonlinear H∞ control approach is used.  ... 
doi:10.5815/ijigsp.2019.04.03 fatcat:isu3hu3qlvgevpl246aq7d2yq4

2010 Journal of Guidance, Control and Dynamics Subject Index

2010 Journal of Guidance Control and Dynamics  
Loading During Taxiway Turns G10-002 Effects of Heave Washout Settings in Aircraft Pitch Disturbance Rejection STOL/VTOL/STOVL G10-181 Control Model for Robotic Samara: Dynamics About a Coordinated Helical  ...  Factors G10-099 Design of Forcing Functions for the Identification of Human Control Behavior G10-002 Effects of Heave Washout Settings in Aircraft Pitch Disturbance Rejection Safety G10-044 Airspace Encounter  ... 
doi:10.2514/1.52477 fatcat:kvlsdca6hvhqfpvldlp2pwwon4

Applications of nonlinear programming for automated multivariable control system design

1985 Journal of Guidance Control and Dynamics  
‘Hauser, F.D., “A Nonlinear Programming Algorithm for the Automated Design and Optimization of Flexible Space Vehicle Autopilots,”” AIAA Paper 73-892, Aug. 1973.  ...  Disturbance rejection could also have been simultaneously considered by reducing the peak value of the frequency response of roll, yaw, and all fin angles due to a disturbance like the wind.  ... 
doi:10.2514/3.20015 fatcat:xvcki2q3z5fdvhuxey3u7yw2ea

Motion Control of a Hovering Biomimetic Four-Fin Underwater Robot

Taavi Salumae, Ahmed Chemori, Maarja Kruusmaa
2017 IEEE Journal of Oceanic Engineering  
U-CAT is a highly maneuverable biomimetic 4-fin underwater robot for operating in confined spaces.  ...  This paper proposes a novel modular control architecture that can be adopted for different application scenarios.  ...  is to fully linearize the dynamics of the robot based on a nonlinear feedback law to obtain a linear system [33] .  ... 
doi:10.1109/joe.2017.2774318 fatcat:yeprivraefa7jaxsabltjghc7a


Dmytro Prusov, Mykhaylo Matiychyk, Oleksiy Mykhatskyi
2017 Vìsnik Nacìonalʹnogo Avìacìjnogo Unìversitetu  
Discussion: Based on the provisions set a prototype integrated avionics for ADO navigation and control synergistic with current approaches has been developing.  ...  provides a comprehensive solution of problems of navigation and synergistic control ADO air navigation in space.  ...  When in the formation of law stabilization using, in addition, information on external disturbing factors act to stabilize the facility, then it is for the stabilization and disturbance rejection.  ... 
doi:10.18372/2306-1472.70.11425 fatcat:t7yr753rqzhtfddvdm57v6bx6y

Time-Critical Cooperative Control of Multiple Autonomous Vehicles: Robust Distributed Strategies for Path-Following Control and Time-Coordination over Dynamic Communications Networks

2012 IEEE Control Systems  
A key enabling element for the execution of such missions is the availability of advanced systems for motion control of autonomous vehicles.  ...  Usually, the problems of motion control for a single autonomous vehicle are roughly classified into three groups.  ...  Note that the coordination control law has a proportional-integral structure, which provides disturbance rejection capabilities.  ... 
doi:10.1109/mcs.2012.2205477 fatcat:p5t5dyousjas5ngdi5yshfkcoa

Robust diving motion control of an autonomous underwater vehicle using adaptive neuro-fuzzy sliding mode technique

Girish V. Lakhekar, Laxman M. Waghmare, Prakash G. Jadhav, Rupam Gupta Roy
2020 IEEE Access  
We construct a simplified neural network to approximate a given unknown nonlinear function dynamics and reject bounded external disturbances. • Single neuron with a linear activation function, namely ADALINE  ...  It should be pointed out that NNs offer a model-free approach for path tracking control with bounded disturbance rejection, which appears attractive; one should not underestimate the efforts of getting  ... 
doi:10.1109/access.2020.3001631 fatcat:zrikkqwsmrc6fpsga6olslk4mi

ℒ_1 Adaptive Control for Learn-to-Fly [article]

Steven Snyder, Pan Zhao, Naira Hovakimyan
2021 arXiv   pre-print
To ensure safe learning of the vehicle dynamics on the fly, this paper presents an ℒ_1 adaptive control (ℒ_1AC) based scheme, which actively estimates and compensates for the discrepancy between the intermediately  ...  Learn-to-Fly (L2F) is a new framework that aims to replace the traditional iterative development paradigm for aerial vehicles with a combination of real-time aerodynamic modeling, guidance, and learning  ...  Satisfied with the performance, the pilot regained control with the PTIs active and flew several approaches to stall. The autopilot was then engaged after an approach to stall.  ... 
arXiv:2108.08462v1 fatcat:odcb2yf26nha5iw6vt67f4gqqm

An experimental study of station keeping on an underactuated ASV

A. Pereira, J. Das, G.S. Sukhatme
2008 2008 IEEE/RSJ International Conference on Intelligent Robots and Systems  
We address the station keeping problem for a small autonomous surface vehicle (ASV) with significant windage. The vehicle is required to hold station at a given position.  ...  Such vehicles are usually large and have arrays of thrusters that allow for controllability in the sway as well as the surge and yaw axes.  ...  This vehicle is relatively light and has substantial windage. Thus the principal challenge addressed in this work is for the craft to reject wind disturbances.  ... 
doi:10.1109/iros.2008.4650991 dblp:conf/iros/PereiraDS08 fatcat:lbdgzgb6yffn5h2ntiotc5auga

Accurate Autonomous Landing of a Fixed-Wing Unmanned Aircraft under Crosswind Conditions

Andrew de Bruin, Thomas Jones
2016 IFAC-PapersOnLine  
disturbance rejection characteristics.  ...  A Linear Matrix Inequality (LMI) approach was used for the derivation of the optimal feedback control gains.  ...  RADIO: Let the aircraft fly one full circuit and then activate the sudo landing flag. RADIO: Are you happy with the aircraft approach and airspeed? RADIO: Activating landing flag for crabbed landing.  ... 
doi:10.1016/j.ifacol.2016.09.030 fatcat:qdtxzefgmfgmpio72ustobbqhy
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