Search results
1 – 2 of 2Víctor H. Andaluz, Cristian M. Gallardo, Fernando A. Chicaiza, Christian P. Carvajal, José Morales, Giovanny Cuzco, Vicente Morales, Byron E. Vaca and Nicolay Samaniego
This paper aims to present a unified motion control scheme for quadcopters which not only solves the point stabilization and trajectory tracking problems but also the path…
Abstract
Purpose
This paper aims to present a unified motion control scheme for quadcopters which not only solves the point stabilization and trajectory tracking problems but also the path following problem.
Design/methodology/approach
The control problem is solved based on the kinematic model of the unmanned aerial vehicles (UAV). Next, a dynamic compensation controller is considered through of a quadcopter-inner-loop system to independently track four velocity commands: forward, lateral, up/downward and heading rate. Stability and robustness of the whole control system are proved through the Lyapunov’s method. To evaluate the controller’s performance, a multi-user application which allows bilateral communication between a ground station and the Phantom 3 PRO quadrotor is developed.
Findings
The performance of the proposed unified controller is shown through real experiments for the different motion control objectives: point stabilization, trajectory tracking and path following. The experiments confirm the capability of the unified controller to solve different motion problems by an adequate selection of the control references.
Originality/value
This work proposes the design of three types of motion controllers, which can be switched to comply a task in outdoor. Based on the software development kit provided by the company DJI, an application to get and send data to the UAV is developed. By means of this application, the three tasks are tested and the robustness of the controllers is proved.
Details
Keywords
Robin S. Codding, Melissa Collier-Meek and Emily DeFouw
Evaluation of any given student's responsiveness to intervention depends not only on how effective the intervention is, but also whether the intervention was delivered as intended…
Abstract
Evaluation of any given student's responsiveness to intervention depends not only on how effective the intervention is, but also whether the intervention was delivered as intended as well as in the appropriate format and according to the most useful schedule. These latter elements are referred to as treatment integrity and treatment intensity, respectively. The purpose of this chapter is to define and describe how treatment integrity and intensity can be incorporated in the evaluation of outcomes associated with individualized intervention delivery.
Details