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This paper presents a novel hardware accelerator architecture for the linear-time Maximally Stable Extremal Regions (MSER) detector algorithm. In contrast to the standard MSER algorithm, the linear-time MSER implementation is more suitable for real-time applications of image retrieval in large-scale and high resolution datasets (e.g. satellite images). The linear-time MSER accelerator design is optimized...
Operation under partial shading condition (PSC) significantly decreases energy extracted from photovoltaic (PV) power plants. Non-uniform insolation caused by the passing clouds and natural obstacles results in some PV modules to be effectively excluded from operation. Commercially used maximum power point tracking (MPPT) algorithms do not have any information about the global behavior of the PV string...
We present our Abstraction Layer Object-Oriented Architecture (ALOOA) and its application to Motion Control. This layer provides a higher level of abstraction than that provided by the well-known PLCOpen library. In fact, the proposed approach uses OO features (i.e. methods, inheritance, and polymorphism) which allow us to define a generic device of motion control, whose hardware-dependent implementation...
Partial runtime reconfiguration is a feature of modern Field Programmable Gate Arrays (FPGAs). It allows the reconfiguration of some parts of the FPGA, while other parts are still running and doing computations. The design flow to create a partially run-time reconfigurable system includes the partitioning of a FPGA into multiple collaborating Reconfigurable Modules (RMs), as part of the floor-planning...
The promotion of the students' transversal or generic competencies is one of the key points of the new European educational framework. Today, companies hiring graduate students are not only concerned about their technical background but also transversal skills and competencies. Hence, it becomes necessary to adopt measures to promote and cultivate these competencies among students. The students' involvement...
This paper addresses software design for cyber-physical automation systems that enables invariant properties of the physical system in case of software reallocation to different hardware. The proposed approach is based on the distributed reference architecture of IEC 61499 standard enhanced with a time-stamping mechanism. It is demonstrated that the proposed approach complements the abilities of IEC...
The transition from product-centric to service-centric business models presents a major challenge to industrial automation and manufacturing systems. This transition increases Machine-to-Machine connectivity among industrial devices, industrial controls systems, and factory floor devices. While initiatives like Industry 4.0 or the Industrial Internet Consortium motivate this transition, the emergence...
Video surveillance is an essential tool for many security-related applications but video is also increasingly used in combination with computer vision technologies in other sensing applications. With the growth of installed camera infrastructure and development it would be beneficial to enable video surveillance systems to support many application simultaneously. Service-oriented Architecture (SoA)...
This paper presents the integrated circuit (IC) which could output a driving waveform to generate the walking motion of the piezoelectric element impact-type micro electro mechanical systems (MEMS) microrobot. The microrobot was made from silicon wafer fabricated by micro fabrication technology. The size of the fabricated robot was 4.0 × 4.6 × 3.6 mm. IC design of the pulse-type hardware neuron model...
In Power-hardware-in-the-loop (PHIL) simulations, one part of a whole network is simulated inside the Real-Time (RT) simulator and another part is in the form of actual hardware. Therefore, operation of a power Hardware-Under-Test (HUT) can be observed and analyzed when it is integrated to a larger network, without building the whole system beforehand. In this paper, a MATLAB/Simulink based toolbox...
This paper presents a 25kW six-level Modular Multilevel Converter prototype. The designed prototype is an industrial power converter that can be used by the industry. The converter is shown together with a high-performance hardware platform control designed for large multilevel converters. The hardware platform is a custom platform based on Zynq-7000 System-On-Chip that provides high processing performance...
Embedded systems (ES) based on field programmable gate arrays (FPGAs) enhance the overall computational capability and relieve computational load. The lack on design and implementation methods for specific control functions in hardware limits the application of complex control techniques. Therefore, a design methodology approach is showed in the current work. Fuzzy, LQR, and PI control systems are...
Programmable logic controllers are widely used for the control of automation systems. The standard IEC 61131-3 defines the execution model as well as the programming languages for such systems. Nowadays, actuators and sensors connect to the programmable logic controller via automation buses. While such buses, as well as the sensors and actuators, become more and more powerful, a shift away from the...
Stability and accuracy of PHIL simulation depends upon the characteristics of the interface between the RTS and the hardware device under test. Even when stable PHIL is achieved, the non-idealities in the PHIL interface introduces inaccuracies in the simulation results. Software models that include representation of the PHIL interface provide a method to evaluate the stability and accuracy of a PHIL...
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