The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In the past decades building automation and control systems emerged from simple control systems for heating, ventilation and air conditioning facilities to complex applications covering different domains and controlling a huge number of entities. When considering complex automation systems, the whole life-cycle has to be taken into account. Besides operation, the installation and configuration is...
Nowadays, reliability is becoming more and more important in the design of Networked Control Systems (NCSs). Fault-tolerance is often used to increase system reliability. In this paper, Triple Modular Redundancy (TMR) and Parallel Redundancy Protocol (PRP) are both applied to a Sensor-to-Actuator architecture with 16 sensors, 4 Actuators and one Supervisor. Two of the 16 sensors as well as two of...
Calvin is an IoT framework for application development, deployment and execution in heterogeneous environments, that includes clouds, edge resources, and embedded or constrained resources. Inside Calvin, all the distributed resources are viewed as one environment by the application. The framework provides multi-tenancy and simplifies development of IoT applications, which are represented using a dataflow...
Vibration control of flexible structures has always been one of the most important issues and Among variant available control methods, active vibration control using piezoelectric sensors and actuators has become popular due to its high efficiency and flexibility for designing a control system. The main concern in designing a control system with piezoelectric patches is finding best position for patches...
Cyber-Physical Systems are distributed, heterogeneous, decentralized and loosely coupled networks in which individual systems measure physical processes, exchange information, and influence processes. Sensors measure these physical processes, while aggregators process them and actuators perform resulting actions. Decisions are often based on sensor data collected by other systems. Furthermore, the...
This paper describes the design and development of a low-cost inverted pendulum device for purposes of control education. The device is based on a modular construction in the form of assembly kit. The individual parts can be made of laser cut fiberboard or any appropriate material. The pendulum uses a stepper motor as the actuator for cart movement and rotary encoders for sensing the angle of rod...
Capsule endoscopy is a good method of gastric cancer diagnosis that has some advantages over conventional endoscopy, such as providing reliable results without substantial discomfort to patients. However, lack of capsule motion control has been a significant obstacle preventing wider application of this technology. To overcome this problem, this paper proposes a steering device that can be employed...
Haptic sensations are a crucial aspect of everyday interaction. We touch, lift, move, and probe objects in our everyday activities. However, whilst the importance of haptic feedback has often been emphasized in gaming, haptics has been rarely used to enhance the experience in traditional (non-digital) games. In the last 50 years, technological advancement has allowed an easier access to haptic feedback...
We previously proposed a wearable robot arm named Assist Oriented Arm, that solved weight and safety problems of the existing wearable robot arms. The previous user interface of AOA was consisted of multi-button switches. However, the previous version did not satisfy the users due to its complexity of operations. To solve this problem, in this paper, we propose two types of new interface of AOA: using...
Future intelligent transportation systems and applications are expected to greatly benefit from the integration with a cloud computing infrastructure for service reliability and efficiency. More recently, fog computing has been proposed as a new computing paradigm to support low-latency and location-aware services by moving the execution of application logic on devices at the edge of the network in...
In this paper, a novel technology is presented in which organic substrate manufacturing is used to create sensors and actuators directly in the CPU package. The dielectric material surrounding some interconnect traces in the substrate is removed, allowing those traces to act as sensors and actuators, while the CPU itself is used for signal processing and conditioning. To demonstrate proof of concept,...
Fog computing provides a decentralized approach to data processing and resource provisioning in the Internet of Things (IoT). Particular challenges of adopting fog-based computational resources are the adherence to geographical distribution of IoT data sources, the delay sensitivity of IoT services, and the potentially very large amounts of data emitted and consumed by IoT devices. Despite existing...
We propose an event-triggered control policy for a discrete-time linear system with unreliable actuators' and sensors' links, captured by Bernoulli packet dropout models. The proposed policy is a threshold-based policy by which transmissions occur if a weighted norm of an error state vector exceeds a threshold. The threshold and the weights of the norm depend on the underlying characteristics of the...
In this paper we present the work in progress of WireMe IoT development platform, a simple way to deploy IoT systems in an intuitive approach. WireMe platforms' simplified software and hardware modules enables users to deploy personalized web interface and program their hardware modules to achieve their home automation tasks without having deep technical knowledge in either of the above domains, with...
This paper investigates the problem of fault detection for networked control systems with time-varying sampling period under the condition of communication constraints. Considering the factors of delay and limited communication, the residual system can be modeled as a parameter-uncertain discrete system by using the parameter uncertainty-based approach to deal with the time-varying sampling periods...
Cyber-Physical Systems (CPSs) represent a new generation of engineered systems facing significant scientific challenges in terms of modeling, architecture, distributed computations and network control, verification/validation mechanisms, and many others. CPSs modeling, a significant aspect of their design and development, can be performed using the Model-Driven Engineering (MDE) paradigm. This approach...
In recent years, the robotic devices have been used in hand rehabilitation training practice. The majority of existing robotic devices for rehabilitation belong to the rigid exoskeleton. However, rigid exoskeletons may have some limitations such as heavy weight, un-safety and inconvenience. This paper presents a device designed to help post-stroke patients to stretch their spastic hands. This hand...
The world of industrial automation technology is at the outset of a new era of innovation with the hype of Industry 4.0. Global modern industrial system converges the power of machines, computing, analytics, connectivity, cyber-physical systems, Internet of things, automation, cloud system and data exchange. Industry 4.0 is a revolution towards the digital world of digital factories and smart products...
This work presents an approach for the analysis and accommodation of sensor-controller communication failures in spatially-distributed processes controlled over a resource-constrained communication medium. We focus on distributed processes whose dominant dynamics are finite-dimensional, but uncertain, with a finite number of spatially-distributed networked control actuators and measurement sensors...
Modern avionic systems are still designed based only on the sensors' measurements, without considering actuator fault scenarios. Acting on several control surfaces, actuators are considered as critical components and therefore, failed actuators can lead to undesirable consequences as degrade performances or even loss of stability during flight. To handle this problem, actuator hardware redundancy...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.