No abstract

Impairments of fingers, wrist, and hand forearm result in significant hand movement deficiencies and daily task performance. Most of the existing rehabilitation assistive robots mainly focus on either the wrist training or fingers, and they are limiting the natural motion; many mechanical parts associated with the patient’s arms, heavy and expensive. This paper presented the design and development of a new, cost-efficient Finger and wrist rehabilitation mechatronics system (FWRMS) suitable for either hand right or left. The proposed machine aimed to present a solution to guide individuals with severe difficulties in their everyday routines for people suffering from a stroke or other motor diseases by actuating seven joints motions and providing them repeatable Continuous Passive Motion (CPM). FWRMS approach uses a combination of; grounded-exoskeleton structure to provide the desired displacement to the hand’s four fingers flexion/extension (F/E) driven by an indirect feed drive mechanism by adopting a leading screw and nut transmission; and an end-effector structure to provide angular velocity to the wrist flexion/ extension (F/E), wrist radial/ulnar deviation (R/U), and forearm supination/pronation (S/P) driven by a rotational motion mechanism. We employed a single dual-sided actuator to power both mechanisms. Additionally, this article presents the implementation of a portable embedded controller. Moreover, this paper addressed preliminary experimental testing and evaluation process. The conducted test results of the FWRMS robot achieved the required design characteristics and executed the motion needed for the continuous passive motion rehabilitation and provide stable trajectories guidance by following the natural range of motion (ROM) and a functional workspace of the targeted joints comfortably for all trainable movements by FWRMS.

Abstract. This research work presents the simulation based study of a commercial solar cell for analyzing the real-time behavior of a PV module. The mathematical modelling is based on Equivalent circuit of the solar cell and demonstrating the practical approach for using the single diode five parameters (IM5P) mechanism. This research involves purely mathematical formulation to extract the unknown parameters of PV cell by applying the Lambert W function. The I -V and P -V characteristics are emulated under different temperature and radiation levels by using the Linear Technology's LTSpice simulator.

No abstract

The appearance of Industry 4.0/IoT induced new production trends in various industry segments. The inclusion of new technologies in production processes requires a different approach to the young engineers, in network devices and security protocols. Our project was a custom-designed semiindustrial CNC, which is attached to the network and uses Linux distribution system to programming and remote control/monitoring.