FPGA logical circuits are more and more attractive for control systems where high processing speed is required. Furthermore, the use FPGA enables system performances improvement and consequently can widen application area of such technology such as haptic teleoperation. It has a great potential in both medicine as well as in industry, however, high haptic fidelity, that still remains a challenging problem, is a prerequisite in demanding applications. The problem of haptic teleoperation is addressed by FPGA implementation of the sliding mode control algorithm. The improvement of haptic fidelity is aimed by widening the control bandwidth. Thus, short control periods as well as short sampling periods are required. The presented FPGA design methodology applies basic optimization methods in order to meet the requirements in terms of extremely short processing intervals and suitable hardware resource consumption, simultaneously. The circuit specification was performed by the high-level programing language LabVIEW and using the fixed-point data type. Furthermore, the proposed design methodology that was experimentally validated allows achieving short design times for producing the FPGA logic circuit. The results of this work were obtained by young researcher from industry COBISS.SI-ID 269260288.
F.04 Increase of the technological level
COBISS.SI-ID: 16789526This work covers the technological modernization of the automatic sliding doors drive. Development of the software code is done by a simple method to make it easier to understand and maintain, and to assure that the integration of new functions minimize a risk on the existing code reliability. A robust control independent of the different door weight is applied. Safe operation of the door even in the case of the primary drive system failure is ensured with the technological modernization of the redundant drive system. The connectivity and control of the drive system is provided by errors recording and diagnostics. A prototype drive system that allows the implementation of robust control of synchronous motors has been built and upgraded into experimental set-up of sliding door, so that the testing of the entire system operation could be performed. The design of the mechatronic systems with finite state machine is also described in [COBISS.SI-ID 16789014].
F.08 Development and manufacture of a prototype
COBISS.SI-ID: 267901440A 50kW inverter system for four-quadrant transverse flux machine (TFM) was developed in the frame of CC-SURE project. The system enables bidirectional energy flow between power grid and electric machine, as well as power factor correction. In the frame of hardware design a three-phase switching inverter, which uses IGBTs as switches, was developed. It can be used either as an active three-phase rectifier or an inverter for electric motors. Driver circuits are integrated with the IGBT module. Implementation with galvanic isolated triggering was chosen. Air and water cooling are possible. The software is executed on 32 bit microcontroller with digital signal processor core, without floating point unit (FPU). The basis is event-oriented control system, which is implemented using microcontroller interrupt logic. Not only the real-time algorithms, but also protective functions are implemented as interrupt routines. Related records are also[COBISS.SI-ID 268035840] , [COBISS.SI-ID 16609046], [COBISS.SI-ID 16963350], [COBISS.SI-ID 16741910].
F.06 Development of a new product
COBISS.SI-ID: 16816918In the framework of International Fair for Automation, Robotics and Mechatronics IFAM we presented a lecture within the Business forum that encompassed advanced approaches and tools for the graphical programming of microcontrollers and industrial controllers, also known in the professional literature as Computer Aided Control Software Design (CACSD) tools. The process of simple control system design and possibilities of practical use were shown. The emphasis was on achieving the reduced time-to-product and higher software transparency as well as on reaching higher software reliability and safety.
F.18 Transfer of new know-how to direct users (seminars, fora, conferences)
COBISS.SI-ID: 16742166In our work, we developed an environmentally friendly automated system, with which we can provide controlled application of pesticides on selected target areas in the habitus of the tree orchard. A real model of an automated system was realized by using a laptop HP Compaq 6830s NA779ES, software tool Matlab/Simulink R2011b, alternative techniques (fuzzy logical tool FIS; Fuzzy Inference System), solenoid valves, control-measuring electronic circuits, NI USB-6009 ADDA card, ultrasonic sensors, Lechler nozzles TR-80-015C and a testing polygon. We developed an algorithm based on pulse width modulation to control solenoid valve. We used Matlab tools, where we optimized the rules and membership functions of fuzzy controller. The results showed, that through a controlled pulse width modulated solenoid valves control, we can achieve the same effect as traditional methods, with lower consumption of pesticides. Presented also in [COBISS.SI-ID 3640108].
F.10 Improvements to an existing technological process or technology
COBISS.SI-ID: 17486358