Design of Controller for Laser Semi-Active Proportional Navigation Device Based on LQG/LTR

Author(s):  
Jun Zhao ◽  
Changyu Wang ◽  
Tiezhu Ai ◽  
Yanfei Huang ◽  
Gang Zhao

1986 ◽  
Vol 23 (11) ◽  
pp. 825-830 ◽  
Author(s):  
Fumiaki Imado ◽  
Susumu Miwa




Author(s):  
Ryan P. Shaw ◽  
David M. Bevly

This paper presents a new approach for the guidance and control of a UGV (Unmanned Ground Vehicle). An obstacle avoidance algorithm was developed using an integrated system involving proportional navigation (PN) and a nonlinear model predictive controller (NMPC). An obstacle avoidance variant of the classical proportional navigation law generates command lateral accelerations to avoid obstacles, while the NMPC is used to track the reference trajectory given by the PN. The NMPC utilizes a lateral vehicle dynamic model. Obstacle avoidance has become a popular area of research for both unmanned aerial vehicles and unmanned ground vehicles. In this application an obstacle avoidance algorithm can take over the control of a vehicle until the obstacle is no longer a threat. The performance of the obstacle avoidance algorithm is evaluated through simulation. Simulation results show a promising approach to conditionally implemented obstacle avoidance.



Author(s):  
Ruoyu Tan ◽  
Manish Kumar

This paper addresses the problem of controlling a rotary wing Unmanned Aerial Vehicle (UAV) tracking a target moving on ground. The target tracking problem by UAVs has received much attention recently and several techniques have been developed in literature most of which have been applied to fixed wing aircrafts. The use of quadrotor UAVs, the subject of this paper, for target tracking presents several challenges especially for highly maneuvering targets since the development of time-optimal controller (required if target is maneuvering fast) for quadrotor UAVs is extremely difficult due to highly non-linear dynamics. The primary contribution of this paper is the development of a proportional navigation (PN) based method and its implementation on quad-rotor UAVs to track moving ground target. The PN techniques are known to be time-optimal in nature and have been used in literature for developing guidance systems for missiles. There are several types of guidance laws that come within the broad umbrella of the PN method. The paper compares the performance of these guidance laws for their application on quadrotors and chooses the one that performs the best. Furthermore, to apply this method for target tracking instead of the traditional objective of target interception, a switching strategy has also been designed. The method has been compared with respect to the commonly used Proportional Derivative (PD) method for target tracking. The experiments and numerical simulations performed using maneuvering targets show that the proposed tracking method not only carries out effective tracking but also results into smaller oscillations and errors when compared to the widely used PD tracking method.



2014 ◽  
Vol 10 (1) ◽  
pp. 60-65 ◽  
Author(s):  
Liang Yan ◽  
Ji-guang Zhao ◽  
Huai-rong Shen ◽  
Yuan Li


1966 ◽  
Vol AES-2 (4) ◽  
pp. 725-725
Author(s):  
Stephen A. Murtaugh ◽  
Harry E. Criel




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