An Accurate Technique for Finding the Coefficient of Rolling Friction Using the Inclined Plane Method
Finding the coefficient of rolling friction (CRF) by the inclined plane method is similar to the manner used in establishing the coefficient of sliding friction. For the rolling case, the difficulty arises from the fact that the usual devices employed in angular measurements present errors greater than the effective angle. The paper surmounts...
By Alaci Stelian, Ilie Musca, Cristian Barz, Cristian Barz, Sorinel Toderas Siretean, Florina–Carmen Ciornei
Approaches for the planning and implementation of industry 4.0
The continuous degree of automation in industry and the networking of individual components such as machines, robots, autonomous drive systems, control units etc. open up new possibilities for linking production and service, or integrating customers and business partners into value-added processes. In this technical revolution, machines shoul...
By Cristian Barz, Klaus C Jalba
Network control of Simatic S7-1200 PLCs for industrial processes
The paper presents different types of controlling and monitoring an industrial process through web interface, depending on the connection types made by PLC or HMI used in the process. We can control the industrial processes through HMI interface directly on the web or phone if we use a Weintek HMI in connection with a SIEMENS PLC for manipula...
By Barz Cristian, Klaus C Jalba, Nicolae Ungureanu, Chiver Olivian, Ioana Tascu, Sinisa Dragutinovic, Dragan Felicia
Study on the End Winding Inductance of Three-Phase Windings in Two Layers
The paper deals with the problem of determining the stator end winding inductance of A.C. machines. It refers to the two-layer windings with shortened pitch, the relative pitch being less than one. The inductance has been determined by numerical analysis based on finite elements method (FEM), the procedure being described in this paper. In or...
By Olivian Chiver, Liviu Neamt, Cristian Barz, Eleonora Pop, Cristinel Costea, Zoltan Erdei
A Dilemma Regarding a Model from Fluid Mechanics
In order to model natural phenomena, a faithful model describing the evolution of the analyzed phenomena must consider as many aspects as possible. An advantage of a correct representation of the studied phenomenon is the highlighting of the aspects hard to notice initially. To support these affirmations, two examples are brought into attenti...
By Ciornei Florina-Carmen, Cristian Barz, Stelian Alaci, Ionut-Cristian Romanu, Bogdan-Ion Dragoi
Big Data and Internet of Things as the basis for the innovative development strategy of the Industry in the future called Industry 4.0
The aim of this paper is to establish a link between the Big Data, the Internet of Things and the new industry, called Industry 4.0. The development of a modern economy is based on supply chains and logistics. Within each logistics are IT solutions. Some of the world's solutions are given in this paper and guidelines are set in the development of s...
By Tihomir S. Latinović, Dragana Preradovic, Cristian Barz, M. T. Latinović, Adina Pop-Vadean
REMOTE CONTROL OF A ROBOTIC ARM
This paper presents the adopted solution for remote control via Ethernet of a robotic arm controlled by a Siemens PLC. PLC control interface is designed with a touch screen Weintek. This HMI control the local PLC, entering the coordinate on the axes X, Y and Z. The HMI command so the stepper motors which actions on the axis of the robotic arm. This...
By Cristian Barz, Tihomir Latinovic, Sorin Ioan Deaconu, Adina Pop-Vadean, Adela Berdie, Paul Petrica Pop