Automatic guidance and control laws for helicopter obstacle avoidance

2003 ◽  
Author(s):  
V.H.L. Cheng ◽  
T. Lam
Keyword(s):  
Obstacle Avoidance ◽  
Control Laws ◽  
Guidance And Control ◽  
Automatic Guidance ◽  
And Control

The Automatic Guidance and Control of Remotely Operate Vehicle for an Underwater Inspection of Mega-Float

1998 ◽  
Vol 31 (30) ◽  
pp. 197-203
Author(s):  
Hiroyuki Oda ◽  
Shintarou Miyoshi ◽  
Tomoaki Ishihara ◽  
Kohei Ohtsu ◽  
Manabu Sasaki
Keyword(s):  
Remotely Operate Vehicle ◽  
Guidance And Control ◽  
Automatic Guidance ◽  
And Control

scholarly journals Guidance Law and Neural Control for Hypersonic Missile to Track Targets

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Wenxing Fu ◽  
Binbin Yan ◽  
Xiaofei Chang ◽  
Jie Yan
Keyword(s):  
Neural Control ◽  
Controller Design ◽  
Sliding Mode ◽  
External Disturbance ◽  
Control Laws ◽  
Guidance And Control ◽  
Maneuvering Target ◽  
Guidance Law ◽  
Control Command ◽  
And Control

Hypersonic technology plays an important role in prompt global strike. Because the flight dynamics of a hypersonic vehicle is nonlinear, uncertain, and highly coupled, the controller design is challenging, especially to design its guidance and control law during the attack of a maneuvering target. In this paper, the sliding mode control (SMC) method is used to develop the guidance law from which the desired flight path angle is derived. With the desired information as control command, the adaptive neural control in discrete time is investigated ingeniously for the longitudinal dynamics of the hypersonic missile. The proposed guidance and control laws are validated by simulation of a hypersonic missile against a maneuvering target. It is demonstrated that the scheme has good robustness and high accuracy to attack a maneuvering target in the presence of external disturbance and missile model uncertainty.

Guidance and control algorithms for mini UAV autopilots

2017 ◽  
Vol 89 (1) ◽  
pp. 133-144 ◽  
Author(s):  
Elisa Capello ◽  
Giorgio Guglieri ◽  
Gianluca Ristorto
Keyword(s):  
Attitude Control ◽  
Path Following ◽  
Adaptive Controller ◽  
Computationally Efficient ◽  
Control Laws ◽  
Content Type ◽  
Guidance And Control ◽  
Aerial Vehicle ◽  
Set Up ◽  
And Control

Purpose The aim of this paper is the implementation and validation of control and guidance algorithms for unmanned aerial vehicle (UAV) autopilots. Design/methodology/approach The path-following control of the UAV can be separated into different layers: inner loop for pitch and roll attitude control, outer loop on heading, altitude and airspeed control for the waypoints tracking and waypoint navigation. Two control laws are defined: one based on proportional integrative derivative (PID) controllers both for inner and outer loops and one based on the combination of PIDs and an adaptive controller. Findings Good results can be obtained in terms of trajectory tracking (based on waypoints) and of parameter variations. The adaptive control law guarantees smoothing responses and less oscillations and glitches on the control deflections. Practical implications The proposed controllers are easily implementable on-board and are computationally efficient. Originality/value The algorithm validation via hardware in the loop simulations can be used to reduce the platform set-up time and the risk of losing the prototype during the flight tests.

Guidance and control laws design for a switched system with discontinuous actuators

2016 ◽  
Vol 38 (5) ◽  
pp. 829-846 ◽  
Author(s):  
Jian Chen ◽  
Zixuan Liang ◽  
Chen Bai ◽  
Peng Li ◽  
Zhang Ren ◽  
...  
Keyword(s):  
Switched System ◽  
Control Laws ◽  
Guidance And Control ◽  
And Control
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