Many industrial automation systems rely on time-synchronized (and timely) communication among sensing, computing, and actuating devices. Advances in Ethernet enabled by time-sensitive networking (TSN) standards, being developed the IEEE 802.1 TSN Task Group, are significantly improving time synchronization as well worst case latencies. Next-generation expected to leverage advances distributed coordinated computing wireless communications enable greater levels of automation, efficiency,...

Optimal placement of sensors or landmarks for the localization an autonomous guided vehicle (AGV) based on range measurements is considered. The optimization relies Fisher information matrix (FIM). A closed-form expression FIM determinant obtained 2-D and 3-D spaces, considering heterogeneous distance-dependent ranging errors. Analytical bounds are derived, several optimal landmark expressions specific scenarios using two groups given. minimax formulation proposed iteratively solved...

Wireless Industry 4.0 applications typically have stringent latency and reliability requirements. Even though state-of-the-art Wi-Fi networks can reliably achieve single digit milliseconds latency, new emerging time-critical requirements that current cannot meet. In this paper, we present next generation technologies describe how they be leveraged to enable three use cases: wireless industrial automation control, remote rendering in extended reality cooperative simultaneous localization...

With the uprising of new fields such as robotics, IoT or Augmented Reality, one main objectives industrial modernization is incorporation safe and secure wireless technologies in factory floor. However, nowadays protocols can not fulfill communication requirements networks, among which reliability bound guaranteed latency are probably most stringent ones. The lack low ultra-high networks mainly derived from error-prone nature propagation. Multi-link techniques expected to provide enhanced...

Mobile and autonomous robots are among the most critical technology applications requiring wireless connectivity with deterministic performance, including bounded latency high reliability, even under congested network conditions. Emerging Wireless Time-Sensitive Networking (WTSN) capabilities over Wi-Fi 5G can enable time synchronization low through time-aware scheduling mechanisms. Such TSN have been demonstrated in several industrial/robotic use cases, but static Mobility introduces new...

Turbo coded data transmission over a hybrid channel, consisting of parallel free space optical (FSO) and radio frequency (RF) links, is considered, analytical bit error performance results are derived. The FSO link modeled using the gamma-gamma distribution function, both random block fading channels used. Random specific codeword selections for through RF considered. Conditions to guarantee rate (BER) improvement in only links In case channels, channel turbo codes found provide several dBs...

A single-input multiple-output optical communication system based on an LED transmitter and a receiving pixel grid of camera is considered. The image received at reference distance modeled using Gaussian mixture the values any other desired are estimated image. Both optimal suboptimal combining techniques analyzed. experimental validation includes placement motorized translation stage to analyze effects random locations grid. Results show excellent agreement between proposed model...

A novel type-II hybrid automatic repeat request (HARQ) algorithm over channels, consisting of parallel free space optical (FSO) and radio frequency (RF) links, is presented. The uses different jointly optimized puncturing RF bit selection patterns for retransmissions. Analytical error rate throughput performance expressions the in case both time invariant random fading channels recursive systematic, non-recursive non-systematic convolutional codes turbo are given. Numerical results show a...

Managing Wireless networks, particularly in industrial and factory environments, to meet the escalating demands of time critical applications has become more complex warrants proactive management strategies. This work introduces an innovative approach wireless network enabled by a Digital Twin (DT) designed continuously enhanced real-time device telemetry user inputs through Extended Reality interface. By collecting real data from devices, our methodology defines calibrates DT representation...

SUMMARYThis paper studies the benefits of implementing active steering systems in railway vehicles mounting bogies with independently rotating wheels (IRW) and outlines a design methodology for such systems. Two possible control strategies based on physical intuition are presented, suitable methods proposed each them. Then validation system is carried out by co-simulation mechanical model vehicle using different software tools. Finally results discussed some conclusions presented.

In this paper, a modulation strategy proposal for asymmetrical cascade converters is presented. This consists of combination staircase and PWM switching strategies. The simplicity the implementation makes attractive, it intended any number cells works binary trinary converters. Furthermore, main feature that permits reduction AC voltage distortion, as shown through simulation experimental results.

This paper presents how a three-phase BTB converter is actively controlled to operate as power compensator and harmonic current filter, simultaneously. The main goal of the proposed control scheme analyze injected by at PCC using three components. These components are used compensate: active power, reactive harmonics. nonlinear loads obtained incorporated controllers in order achieve filtering function. For analysis, compensation priority it accomplished. A 30 kVA for simulations....

This paper proposes a method to balance the power of transformers in low voltage distribution by using Back-to-Back (BTB) converter. Through exchange active and compensation reactive between feeders, overloading is avoided. In proposed method, load considered as variable that constantly changing. The control structure designed dq frame reference classical theory employed. A test system composed two 50kVA supplying several loads used validate efficacy method. For simulations 30kVA BTB...

This paper presents a study on the utilization of single phase three-level bridge inverter to inject active power from photovoltaic source. Simultaneously, it compensates reactive and harmonic current components, allowing factor correction (PFC). An analysis design passive elements, considering maximum values, is made. Additionally, process injection described in straightforward way, whenever available. Simulation results are presented validate criteria, description, PFC. A 5 kW-10 kvar...

Connecting the tangible world bidirectionally with its digital counterpart is fundamental for Physically-grounded Metaverse Applications (PMAs). For instance, in visually-guided human assistance, space-time analytics, eXtended Reality (XR) or automation use cases, ability to capture, model, and exploit dynamic environments essential. PMAs unify premises through intelligent capabilities built on detailed, gap-free up-to-date 3D models of buildings delivering dependable functionality utility...

The aim of the current paper is to assess ability active steering systems prevent development rail corrugation in curves. For that, growth rates obtained for a passive vehicle are compared with those vehicles (in work two strategies described and implemented: relative angle control yaw moment control). procedure calculation described: first quasi-static creepages produced during curve negotiation calculated by means railway simulator program (SIMPACK) different cases. Second, these...

This paper presents a multiuser mobile optical wireless communication system that uses single digital camera to receive signals transmitted by multiple users using light-emitting diode (LED) arrays. The key idea is sample only the engaged pixels affected from users. Toward this aim, image frames received during an acquisition phase are used estimate signal support of in plane orthogonal matching pursuit (OMP) algorithm compressed sensing framework. detected then clustered and tracked Kalman...

Camera Communications (CamCom) is the transmission of data using modulated lights acting as transmitters and a digital camera receiver. We propose novel high speed CamCom system Neuromorphic Vision Sensor (NVS) cameras. present algorithms for detection demodulation light sources. To prove validity our algorithms, we show experimental results light-emitting diode (LED) tag prototypes NVS camera. Details proposed configuration optimal communications are presented.

This paper introduces the study of a single phase bidirectional high frequency link converter for photovoltaics applications in grid tie systems, based Push-Pull topology. The main advantages converters are: low cost and power density transformers, capacity to provide galvanic isolation between photovoltaic panels grid. Furthermore, capability manage flow from electric dc source allows adding compensate reactive system using same circuit. On other hand, sizing passive elements is explained....

This work presents the extended capabilities of a single-phase Pulse Width Modulation (PWM) rectifier to achieve unity power factor (PF) in Point Common Coupling (PCC). It can act as dynamic var compensator, fixed compensator and Active Power Filter (APF). To accomplish such tasks control scheme based two cascaded loops is used. The outer loop regulates dc bus voltage provides active reference; inner performs tracking active, reactive harmonic current references. Transistors are driven by...

In this moment, different alternatives exist to generate electric power across the natural resources use. One of most popular options is making use solar energy by photovoltaic (PV) cells and electronic converters. Both elements constitute systems (SFV). Although today, you can find a number topologies converters, it necessary look for that offer all possible advantages in order achieve better resources. This paper proposes construction prototype which topology already known as 3 phase...

Adoption of wireless systems for use in industrial scenarios is increasing, although slowly, process control and discrete manufacturing. In particular, factories must make the leap towards networks as a central form communications to enable certain capabilities out-lined by Industry 4.0. Acceptance principal mode slowed fact that it indeed less reliable deterministic than its wired counterparts. The medium susceptible interference multi-path fading effects, their impacts are exacerbated...

This paper describes an automated self commissioning procedure for voltage referenced fed vector controlled induction motor drives. A method off-line determination of machine electrical parameters is presented. The measurement the variables at standstill time-domain test used as identification base. Experimental results achieved with a 10 HP drive show good agreement between estimated and nominal parameters. proposed strategy compared other mechanisms, previously described in literature,...