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Growing global competition, environmental concerns, legal and market requirements motivate production companies to strengthen their capability to monitor and control their factories. SCADA, MES, ERP and EAI provide limited and fragmented awareness on the behavior and performance of the manufacturing systems from the production, economic and environmental perspective. The introduction of wired or wireless...
Modern production environments require integrated views on different processes (manufacturing, logistics) at different levels to enable analysis and optimization of these processes. The views can be provided by cockpits allowing the insights for different responsible persons. The purpose of the EU-funded project PLANTCockpit is to develop a general approach for creating of such cockpits for different...
Analysis and forecasting of the sales of products is extraordinary important for managers of supermarkets. In special, the forecasting of special bargain offers is of interest. This paper approaches this task by low level simulation of customers and products of a supermarket. The simulation is parameterized by results of analysis of real sales receipt data to achieve the results close to reality....
Event-based sampling allows saving energy in the sensor transmitter by avoiding unnecessary messages. One important application is room temperature control with wireless sensors. Optimizing the controller parameters of a PI controller for this application is a difficult task, because usually no process model is available and challenging issues like actuator saturation have to be taken into account...
Event-based sampling is currently an important topic in research and practice, because it allows saving energy in the sensor transmitter by avoiding unnecessary messages. The main contribution of this paper is a simple PI controller tuning rule adapted to the usage of level-crossing sampling with special focus on energy efficiency. The tuning rule uses a FOLPD (first order lag plus time delay) process...
Internal logistic systems are an important part of the modern industry. Their design involves as a rule elaborate simulations. However, during the lifetime of a factory, simulation models of the transport system often become outdated as components are added or removed and the laborious maintenance of the models is neglected. Nonetheless, for performance optimization of the transport system, accurate,...
For the prediction of product sales, simulations of interactions of different individual customer behaviors in supermarkets are an appropriate approach. In order to parameterize the simulation close to reality, analysis of shopping baskets based on real sales receipt data is one of the key steps. The combination of the data analysis and simulation is in the scope of this paper Analysis of real sales...
In order to guarantee high operational availability, the modular industrial equipment requires frequent maintenance, which oftentimes is carried out by the manufacturer. Reports about service technician's activities are stored in maintenance histories. Manufacturers of such equipment would benefit significantly from analysis of recorded maintenance and fault histories for planning of maintenance activities,...
Currently many companies that deliver automation equipment intend to grade up their products by providing enhanced e-services like remote maintenance, remote diagnosis or remote consulting. Software agents are an adequate approach to realize these tasks, however, available agent frameworks lack satisfactory support for this domain. In this paper we present the specific requirements for agents in industrial...
Deadband sampling is used to reduce the number of messages and CPU utilization in networked control systems. However, when applied in closed control loops, the deadband sampling should be treated in control algorithm to cope with such problems like largely irregular samples, timing of sensor and controller events, and limit cycles. A PID control algorithm for deadband sampling is proposed in this...
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