Improving the prediction accuracy of recurrent neural network by a PID controller.

International audienceIn maintenance field, prognostic is recognized as a key feature as the prediction of the remaining useful life of a system which allows avoiding inopportune maintenance spending. Assuming that it can be difficult to provide models for that purpose, artificial neural networks appear to be well suited. In this paper, an approach combining a Recurrent Radial Basis Function network (RRBF) and a proportional integral derivative controller (PID) is proposed in order to improve the accuracy of predictions. The PID controller attempts to correct the error between the real process variable and the neural network predictions

SIMULATION AND MODELING OF CYCLOID GEARS USED IN ORIENTATION MECHANISM OF ROBOTS

Cycloid reducers compared with classical reducers have low axial and radial gauge, high transmission ratio, and a better reliability. Cycloid gearing roller, through its qualities, has an important role in modern mechanical transmissions. The difference between numbers of teeth of the cycloid gear roller can be equal to 1 (|z1 - z2| 1), without risk of interference, as a result, can be obtained big gear ratios in accordance with in lower overall dimensions, while the classic gear have the difference between teeth number min z1 - z2 4. In this paper, the physical prototype of a new version of roller cycloid reducer is presented. Also one tries to test this variant of cycloid gear on a modern stand trial

Robots in Action - Professional Contest 2018

The Electrical Engineering, Electronics and Information Technology Faculty, "Valahia" University from Targoviste, together with the Robotics Society of Romania, Targoviste subsidiary, and Students League, organized on June 6th 2018, starting from 11.00h, in the Rotonda of Engineering Faculties, the eleventh edition of the professional contest "ROBOTS IN ACTION"

Scientific Bulletin of the Electrical Engineering Faculty -no. 2 / 2008 SOME RESEARCH REGARDING THE DESIGN OF VERTICAL TRANSLATION MECHANISM OF A COLUMN INDUSTRIAL ROBOT TYPE

Abstract: Starting from column industrial robot architecture we try to find a mathematical procedure for the designing of robot. This work presents the dynamical and statically estimation seeing the parts of the robot. Also, it presents some calculations looking precision of the screw-nut mechanism, which is the main component of whole robot. At last, it established some designing criteria such as: execution technology, couplings, lubricates, the couple applied to lead screw for obtain an axial force etc

THE MODELING AND SIMULATION OF A ROBOTIC ARM

Abstract A complex manipulator that includes robot "arms" can pick up and manipulate everything from delicate objects to large payloads. Every mechanism in the manipulator must be defined as an object, with information describing all the forces associated with the object's motion or tasks. This includes rotation and position matrices, center of mass, inertia, external torque and forces acting on it, motor torque, elastic torque etc. An operator must construct a graphical model, using a Matlab-Simulink program to describe the robot system's topology. The operator drags and drops object blocks from a library, links them together