scholarly journals EXPERIMENTAL STUDIES OF GEODETIC MONITORING ACCURACY OF UPPER SURFACE OF ENGINEERING OBJECTS AND CONSTRUCTIONS

Author(s):  
Ivan A. Knol ◽  

The development of totally new methods for geodetic monitoring of engineering objects and con-structions in emergency state is a relevant scientific and technical task of geodesy. The results of such studies allow to ensure prompt and reliable data of the condition of a spatial object for the purpose of its safe exploitation. The article presents experimental studies of a quadcopter model according to the developed by the author method for geodetic monitoring of engineering objects and constructions based on the multi-agent system theory. The article describes the test model of quadcopter and mean square error calculation of elevation measurement in the laboratory conditions of the station. Based on the experiment results the article makes the conclusion about the possibility of measurement by the described method. The suggested method is possible in situations when measurements by man are im-possible and the object of geo-monitoring is an inaccessible place.

2021 ◽  
Author(s):  
Yuan Jian ◽  
Liu Hailin ◽  
Zhang Wenxia

Abstract This paper addresses the mean square consensus-based formation control for multiple agent system (MAS) with input and output delays under network attacks, process noise, and measurement noise in MAS. Firstly, a time delay-free transformation approach for a multi-agent system with input and output delays is presented. The MAU system is transformed into a formal delay-free discrete-time system using the delay-free transformation method. Then a state observer based on Kalman filter is presented to estimate the states of agents. A distributed predictive consensus protocol based on the estimated states of each MAUS is proposed for the leader-following MAUS. The sufficient and necessary conditions of mean square consensus for MAUS under DoS attacks are derived. Finally, a numerical example of consensus-based formation control for Multi-agent systems is provided to verify the correctness and effectiveness of the proposed consensus control protocol.


2009 ◽  
Vol 2 (4) ◽  
pp. 61-70
Author(s):  
Ravi Babu Pallikonda ◽  
◽  
K. Prapoorna ◽  
N.V. Prashanth ◽  
A. Shruti ◽  
...  

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