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Presented work discusses a proposal of an environmentally friendly flight control system for Light Aircraft or Unmanned Air Vehicle (UAV). The noise and emissions reducing flight control system is based on Total X Control System (TXCS) and assumes the reduction of the total energy dissipation. A general description of the flight control system, control laws, as well as results of preliminary tests...
In the low-cost Unmanned Aerial Vehicle (UAV), in order to ensure the security of the system and reduce costs, degrade control system under the sensor fault state is becoming more and more highly regarded. Degrade control adopted less sensor configuration to achieve the desired control functions. In the low-cost prototype UAV research and development process, degrade control not only can reduce system...
Adaptive inverse control (AIC) theory is introduced to inhibit interferences such as side wind during hovering control for small-sized unmanned helicopter. Based on this theory, an AIC control block diagram is improved to accommodate with the characteristics of helicopter hovering model and robust design. According to structure and fundamental theory of small-sized unmanned helicopter, a hover flight...
Quadrotor UAVs are one of the most preferred type of small unmanned aerial vehicles because of the very simple mechanical construction and propulsion principle. However, the nonlinear dynamic behavior requires a rather advanced stabilizing control of these vehicles. One possible approach that relaxes the difficult task of nonlinear control design is the application of a learning algorithm that allows...
This paper presents the modelling of a four rotor vertical take-off and landing (VTOL) unmanned air vehicle known as the quadrotor aircraft. The paper presents a new model design method for the flight control of an autonomous quad rotor. The paper describes the controller architecture for the quadrotor as well. The dynamic model of the quad-rotor, which is an under actuated aircraft with fixed four...
To analyze the characteristic of an onboard pan-tilt control system to enable an unmanned aerial vehicle (UAV) to Track a ground target, and to verify the stability of the tracking controller and to test the performance of the controller, an experiment platform for pan-tilt control of a small scale autonomous helicopter is designed and then implemented. The system consists of four components including...
This paper concerns with the autonomous flight control system of an unmanned helicopter, which is combined with reinforcement learning based neuro-controller. We assume that PID (proportional-integral-derivative) type, linear feedback controller is predesigned and it can stabilize the system with limited performance. The conservative control behavior is improved by the synthesis of the poor feedback...
Multiple Unmanned Helicopters (UH) formation control is a difficult problem due to the highly nonlinear model and extensively existing uncertainties. In this paper, basing on the concept of relative dynamics and Leader-Follower formation strategy, a new formation control algorithm is given to partially solve this problem. First, the formation control problem is transformed into tracking problems of...
In this paper, we describe the dynamic model of a four-rotor mini rotorcraft, and present the hardware design of real-time embedded control system for small Unmanned Aerial Vehicles (SUAV). We improve the driver performance for Brushless Direct Current (BLDC) motor. In addition, the modular programming method is adopted in software design to carry out the computation of control law, data processing...
This paper describes a new control strategy for an aircraft electrical systems evaluation platform. The 100 kVA, experimental facility includes multiple generators and power electronic loads interconnected by a high-voltage dc bus, centrally controlled by a real-time computer and data logging system. The Facility is to allow electrical power management techniques to be developed for future autonomous...
Hovering performance of unmanned helicopter is of key importance in flight.This paper presents an autonomous control system to achieve the excellent hovering performance for a miniature unmanned helicopter. First, the response data of system is collected during special flight test and a linear time-invariant model is extracted by frequency identification technique.Then, the control system is designed...
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