A New Method for Real Time Control of Actuators in Continuous Flux LUIGE VLADAREANU 1 , ION ION 2 , LUCIAN M.VELEA 3 , MIHAI S. MUNTEANU 4 , OCTAVIAN MELINTE 3 , ALEXANDRU GAL 3 1 Institute of Solid Mechanics of Romanian Academy, C-tin Mille 15, Bucharest 1, ROMANIA, 2 Politechnica University of Bucharest, Splaiul Independentei 125, Bucharest 5, Romania 3 Industrial Engineering and Technology VTC-Srl, Burla Vasile 24, Bucharest 6, ROMANIA 4 Technical University of Cluj-Napoca, C-tin Daicoviciu 15, Cluj-Napoca, ROMANIA Abstract.                                                                                                                                                   Key-Words: actuator control, real time control,complex automations, mathematic modelling, PLCs 1. Introduction. The new tendencies in complex automations are using PLC in decentralized and distributed structures, conferring a lot of capacities and facilities to both equipment, installation, engineering plant producers and users. Hence we can envision, design and build pyramidal structures with PLCs and PCs for automatic control of complex processes, for monitoring and management of process parameters, as well as constructing redundancy structures which endow the systems with maximal safety during functioning and, first of all, high reliability. These structures allow the interconnection of several automation systems for controlling, monitoring and centralized dispatching of processes within complex mechanisms. The decentralized and distributed structure with PLCs systems must be understood as an intelligent interface between the process and the central control system within the pyramidal structures of controlling, monitoring and dispatching processes. The same structure could be perceived as an intelligent system that, during the control of some unique processes, equipments, engineering lines, is distributed on a large working area. In both cases the human factor is only supervising the processes’ progress. The philosophy of decentralized and distributed structures is based upon the creation of some intelligent islands wherein the execution elements connected through the specific communication network of the PLCs are concentrated. The main advantage of using systems in decentralized and distributed structures is that they may lead to controlling, monitoring and supervising several processes which are meant to create a unique final process. Thus a lot of interconnected processes, that are all part of the final process, are created. The paper presented offers a new actuator control solution for continuous flux trials, based on the concept of open architecture systems. For real time control of the actuators in order to determining the characteristics, functional parameters and performance several technical solutions are known which consist of measuring directly from the transducers mounted onto the actuator the input signals (accelerations, currents, power, torque, etc.). To this end, the tried actuator is connected to a charge, usually passive, integrated into the control system and the actuator’s control signals are measured. The disadvantage is mainly that, in order to determine 9th WSEAS International Conference on AUTOMATION and INFORMATION (ICAI'08), Bucharest, Romania, June 24-26, 2008 ISBN: 978-960-6766-77-0 303 ISSN 1790-5117