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Many aspects have to be considered while achieving flexibility of production systems. One of them is flexible communication system that on one hand fulfils requirements of a particular industrial application and on the other hand allows integration of new network components optimally in a seamless way. In this paper, an approach to increase, rather static, Time Triggered Ethernet based systems is...
With the trend of increasing human robot collaboration, the need for more advanced safety systems arises. To create safe robots that act proactive to dangers, a safety system based on risk analysis has been developed. This paper presents a vital part of the risk analysis, the likelihood analysis,. In this likelihood analysis, data about human activity is recorded based on its occupied space. The times...
The fact that normal tasks of control blocks are highly complex and unnecessarily overfitted has led to superfluously high workloads with regard to engineering and development. Existing concepts of variability handling are not designed for this use case. Therefore we present a new variant description model and concept for a control block variant management technique. This concept ensures that the...
The vision of the smart home is increasingly becoming reality. Devices become smart, interconnected and accessible through the Internet. In the classical building automation domain already a lot of devices are interconnected providing interfaces for control or collecting data. Unfortunately for historical reasons they use specialized protocols for their communication hampering the integration into...
As a standardized communication protocol, OPC UA is the main focal point with regard to information exchange in the ongoing initiative Industrie 4.0. But there are also considerations to use it within the Internet of Things. The fact that currently no open reference implementation can be used in research for free represents a major problem in this context. The authors have the opinion that open source...
Multi-carrier approaches have arisen in the last years as a suitable medium access technique for many communications standards, such as PowerLine Communications (PLC). This one is based on using mains for data transmission, not only in industrial environments but also in public buildings, residences and houses. One of these multi-carrier solutions is based on the Filter-Bank Multi-Carrier (FBMC),...
Modern robotic systems tend to get more complex sensors at their disposal, resulting in complex algorithms to process their data. For example, camera images are being used map their environment and plan their route. On the other hand, the robotic systems are becoming mobile more often and need to be as energy-efficient as possible; quadcopters are an example of this. These two trends interfere with...
Current state of the art in industrial robotics presents highly autonomous production plants, where an undefined number of robots work in cooperation to perform complicated tasks in an automatic way. However, these tasks are repetitive and generally do not allow a minimum change or variation in the overall process to obtain a successful result. In addition to this, these layouts do not allow any fast...
The paper addresses the emerging need for tools devoted to the energy governance of smart cities. We propose a hierarchical decision process that supports the energy manager in governing the smart city while addressing different urban sectors with an integrated, structured, and transparent planning. Starting from the urban control center proposed in a previous contribution for the urban energy management,...
Cooling is an extremely important process in modern data centers. Cooling systems of server rooms ensure appropriate operation conditions to IT systems, such as servers and data storage, but, on the other side, they consume a lot of energy. Current control systems, which are installed in data centers and are responsible for thermal management of the facilities, are following conservative control strategies...
This paper presents a novel Model-Based Design (MBD) approach and associated tool-chain for the Time-Triggered Real-time Embedded (TTRE)1 systems. Our tool-chain automatically synthesizes software for manufacturing TTRE systems. A Software-In-the-Loop Simulation (SILS) framework integrated into our tool-chain helps to reduce the design iterations. Using a manufacturing robot-arm use-case, we validate...
In this study, Clifford multi-layer neural networks using a back-propagation algorithm are applied to control a nonlinear dynamic system to investigate its capability in practical control applications. A self-tuning feedback controller in which feedback gain parameters are adjusted by the Clifford multi-layer neural network is designed and a trail-based learning architecture is introduced in the online...
This paper presents an approach for managing alarms and diagnoses in an integrated IT and automation environment. In order to face the challenges of the integration of IT services with automation systems, an approach based on WBEM/CIM is presented. The provided solution is mostly not bound to specific vendors or fieldbus technologies and can easily be extended towards other requirements and scenarios.
Most computer vision applications are built from a combination of basic computer vision algorithms, such as filters, descriptors and matchers. The functionality of this computer vision toolbox is well understood and solid implementations exist. One of the leading and most often used implementations is the Open Source Computer Vision Library (OpenCV), which implements more than 500 computer vision...
In this paper, a genetic algorithm (GA) method for the design of the operational architecture of a control system is presented. It provides from the knowledge of some characteristics of the functions that the control system must ensure, an allocation solution of these functions on industrial controllers while satisfying capabilities, compatibility and exclusion constraints in order to minimize the...
Due to some limitations of mechanical solution for automation of front end loaders, specifically self-leveling task, we investigate here the sensor-based solution. We present a model of front end loaders and the comparison of different controllers to realize this task. The best performance is observed from the controller comprising linear terms, compensation of input nonlinearity known as dead zone,...
Recently, the industrial wireless protocols have been widely used around the world. However, the unreliable communication media between the sensors and the central controller renders the wireless signal channel vulnerable to many attacks. Various efforts have been devoted to study the influence of specific malicious attacks from the aspect of theoretical investigation based on different assumptions...
In recent years, cloud computing, which provides users with network resources such as memory and computing power depending on the users' needs, has gained enormously in importance. Providers such as Amazon allow the users to access their cloud storage and computing resources by different interfaces. In this regard, guaranteeing compatibility is a severe issue as many different proprietary interfaces...
In this paper, a real-time control network based on Ethernet and FireWire is presented, where Ethernet provides a convenient, cross-platform interface between a central control PC and a FireWire subnetwork that contains multiple distributed nodes (I/O boards). Real-time performance is achieved because this architecture limits the number of Ethernet transactions on the host PC, benefits from the availability...
This paper describes innovative sensing technologies and control techniques, that aim at improving the performance of groups of Automated Guided Vehicles (AGVs) used for logistics operations in industrial environments. We explicitly consider the situation where the environment is shared among AGVs, manually driven vehicles, and human operators. In this situation, safety is a major issue, that needs...
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