scholarly journals Control of the Trajectory Movement of a Quadrocopter during Transportation of Cargo on a Suspension: Experiment

2019 ◽  
Vol 17 (4) ◽  
pp. 46-56
Author(s):  
A. S. Dimova ◽  
K. Yu. Kotov ◽  
A. S. Maltsev ◽  
E. D. Semenyuk ◽  
M. A. Sobolev
Keyword(s):  
Flight Control ◽  
Experimental Verification ◽  
Experimental Stand ◽  
Nonlinear Regulator

The problem of controlling the movement of a quadrocopter during transportation of cargo on a suspension is considered. This paper presents the results of an experimental verification of a previously developed nonlinear regulator for suppressing suspension vibrations relative to the vertical. The description of the created experimental stand for flight control of a small-sized quadrocopter in the room is given.

Experimental Verification of the Properties of Fibres for the Mechanisms Based on Parallel Kinematic Structures

2013 ◽  
Vol 486 ◽  
pp. 195-200
Author(s):  
Jaroslav Václavík ◽  
Pavel Polach
Keyword(s):  
Computational Model ◽  
Experimental Verification ◽  
Mechanical Systems ◽  
Inclined Plane ◽  
Fibre Properties ◽  
Plane Vibration ◽  
Experimental Stand ◽  
Axial Forces ◽  
Parallel Kinematic

The paper was written in the framework of research in mechanisms of the increased mobility on the basis of parallel kinematic structures, for which a fibre control instead of rigid elements is designed. The experiment is focused on the verification of the fibre properties in simplified mechanical systems such as motion on an inclined plane, vibration of a moving weight hanging on a fibre and fibre interaction with two types of pulley. The arrangement and instrumentation of the experimental stand and of the system for the measurement of position and axial forces in a fibre are described. The results should serve for tuning the computational model, the results of which are also presented in the framework of specific experiments.

Automation Surprise

2017 ◽  
Vol 7 (1) ◽  
pp. 28-41 ◽  
Author(s):  
Robert J. de Boer ◽  
Karel Hurts
Keyword(s):  
Flight Control ◽  
Representative Sample ◽  
Aviation Safety ◽  
Control Mode ◽  
Cognitive Errors ◽  
Laboratory Studies ◽  
Airline Pilots ◽  
Flight Operations ◽  
Widespread Phenomenon ◽  
Few Data

Abstract. Automation surprise (AS) has often been associated with aviation safety incidents. Although numerous laboratory studies have been conducted, few data are available from routine flight operations. A survey among a representative sample of 200 Dutch airline pilots was used to determine the prevalence of AS and the severity of its consequences, and to test some of the factors leading to AS. Results show that AS is a relatively widespread phenomenon that occurs three times per year per pilot on average but rarely has serious consequences. In less than 10% of the AS cases that were reviewed, an undesired aircraft state was induced. Reportable occurrences are estimated to occur only once every 1–3 years per pilot. Factors leading to a higher prevalence of AS include less flying experience, increasing complexity of the flight control mode, and flight duty periods of over 8 hr. It is concluded that AS is a manifestation of system and interface complexity rather than cognitive errors.

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