This paper presents an overview of modern adaptive control systems for vehicle. It shows simulation results of vehicle flight with using the adaptation algorithm for position-control system, with estimation loop of additional disturbances, and with the reference mathematical model and astatism. The simulation results for two cases (for given constant coefficients of adapting and using the automatic settings adjustment coefficients) are presented.
Keywords: adaptive control, helicopter, position-trajectory control, observer, estimation, vehicle, flight,simulation
In the article the method of dynamic repeller formation in case of drone movement control is offered for use in the three-dimensional environments with obstacles. Erle-HexaCopter is considered as drone in this article. Article contains the short description of a hexacopter mathematical model and positional-trajectory control movement algorithms. The method is based on representation obtacles as dynamic repeller is offered. Dynamic repellers are formed depending on the distance from the drone to the obstacle in the movement process. This method is analyzed and simulated in Matlab. Cases with one or several stationar obtacles are considered in simulation. In conclusion, we formulated the revealed features of this method
Keywords: Hexacopter, unformalized environment, 3D, round of obstacles, movement control, repeller, drone
This paper represent a method of unstable modes and concept of virtual point applying to unmanned aerial vehicles in 3D. It describes details of unstable modes for vehicle control, as well as virtual point method in 3D and its procedure. As an example of vehicle, we use hexacopters. Paper shows simulation results for a number of cases: a flight from point to point in undetermined environment with obstacles and path-following in undetermined environment with obstacles. The efficiency of the method with various coefficients is analyzed. In conclusions we discuss about limits of the method and the recommendations of its use.
Keywords: unstable mode, hexacopter, vehicle, virtual point, UAV, obstacle, simulation, flight, position-trajectory control
The paper substantiates the necessity of the CFD analysis of AUUV. It presents an algorithm of hydrodynamic coefficients computation. The initial conditions and environment model for computation are defined. We present the CFD results and the approach of hydrodynamic coefficients analysis.
Keywords: AUUV hydrodynamics mathematical model polynom approximation software complex
The article presents an approach to synthesis of inhibitory quasi-fields of obstacles for SUGV on-board path planning system, algorithmic basis of which is an adaptive control method for intellectual robots. The inhibitory quasi-fields of obstacles are used for path optimization by safety criteria.
Keywords: Robotics, SUGV, local navigation, path planning, trajectory optimization
A mathematical model of a surface mini-ship "Neptune", including a mathematical model of the actuators. Used to identify the parameters of the mathematical model. analysis of stability and controllability of surface mini-vehicle for its mathematical model.
Keywords: mathematical model, surface mini-ship, handling, stability
In the article a number of approaches to a flapping wing pilotless vehicle control system synthesis are analyzed. Referred type of pilotless vehicles is possessed of a number of advantages compared to the traditional schemes, but requires a special approach to control system creation because of strong nonlinearity and multicoupling of a controlling object mathematical model. As a result of a control system synthesis approaches analysis a synergetic approach was marked out as the most adequate for the mentioned above type of controlling objects. An idea of prognostics application for the goal of reaching of adaptive control is also set forth. In this case parameters of an object of control and parameters of ambient both are to be forecasted whereby an adaptive behavior of an object of control is expected to be achieved.
Keywords: control system, pilotless vehicle, control theory, “barrier of dimensionality”, synergetic approach, adaptation, prognostic.
The stated task is development of planning system of energy-efficient trajectories for stratospheric airship. Different intellectual approaches for this task were analyzed. Genetic algorithms were chosen. Results of application of genetic algorithms were considered.
Keywords: MAAT, high-altitude airship, control system, planning, genetic algorithm
In this paper, the synthesis of a trajectory regulator for a mini-helicopter are described. We propose a method to hardware-in-the-loop simulation using simulator AerosimRC. The simulation results are showed. The tasks for the application of the method are pointed.
Keywords: position-trajectory regulator, helicopter, mathematical modeling, simulation, algorithms.