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A novel RRAM-based pattern recognition system with locally inhibited post-neurons is developed. The system is able to learn the whole MNIST training set (60,000 patterns). By using the system, the same post-neuron is fired by the similar patterns in the same training class, which causes the reduction of hardware cost. With the locally inhibited post-neuron, the system can achieve more than 90.73%...
Insertion of scan chains, as the most common DFT technique, provides a powerful way for the structural testing of integrated circuits (IC). However, it can be easily misused by unauthorized parties to acquire critical design information. Scan-based attacks are one kind of side channel attacks that reveal the comprehensive information of IC design noninvasively. Reports have shown many successful scan...
In this work, we present a parameter extraction method for TiO2 memristive devices that applies on a resistive switching rate model which embodies only four parameters for each voltage biasing polarity. The simple form of the model functions allows the derivation of a predictive analytical resistive state response expression under constant bias voltage. By employing corresponding experimental testing...
We demonstrate a desktop platform which has the ability of modeling ReRAM TiO2 samples in a highly automated manner. The system consists of a bespoke RRAM characterization instrument that hosts packaged RRAM devices and is operated via a PC. The system's python-based software includes a module that automatically applies strategically chosen sequences of pulses to a test device and then extracts the...
During the last decades the number of microgrids and their research have increased notably, as they offer a high versatility for the integration of distributed generation (DG) units and renewable energies. Among the different types of microgrids, dc systems are becoming more popular due to their advantages over conventional ac systems. However, their control techniques differ from the ones employed...
The experimental characterization of a new DC/DC converter for high voltage, up to 60 V, automotive applications is proposed in the paper. A summary description of the inductorless converter is showed to understand the measurement results. The bare die is used to avoid the effects of the package on the measures. The tests are focused on Electromagnetic Interference (EMI) highlighting the low values...
In this paper we present an approach to reduce the verification cost of distributed elevator control systems through embedded code re-use to co-simulate networked devices in a hardware-in-the-loop simulator: the CAN Restbus simulator. The approach is applied to a case study in the field of distributed control system for elevators movement. We discuss the use cases for the CAN Restbus simulator, the...
A variety of alarm management techniques are available to improve the performance of alarm systems and avoid alarm overloading; in particular, the state-based alarming strategy has been widely used in practice to remove noninformative alarms that are caused by the switching of operating modes. However, the configuration of mode-based alarming strategies relies on proficient process knowledge, and...
IEC 61850 Generic Object-Oriented Substation Event (GOOSE) systems can be designed in a manner that allows testing personnel to easily identify problems and verify system functionality. This paper provides procedures and guidelines for successfully designing and integrating GOOSE protection schemes while keeping the feasibility of initial commissioning and maintenance testing in mind. The paper addresses...
Pole mounted transformers are subject to inrush currents, that occur during start-up of the transformer. The inrush currents may cause unwanted forces on the windings. Testing was done at a Transformer Testing Facility to develop a model to understand the inrush currents. The model matched measured results closely.
This paper presents a new scan-based at-speed test signal scheme called One Clock Alternated Shift (OCAS) for minimizing the potential impact of the power distribution network PDN impedance variation. The strategy behind this new scheme is to mimic the clock signal of the functional mode as closely as possible. As a case study, we consider the PDN impedance variation that can occur with 3-D ICs, more...
This paper describes a phase switching algorithm for Interpolating Digital-to-Analog Converter (DAC) based Arbitrary Waveform Generators (AWG). This was possible by using the standard phase switching algorithm with the addition of simple phase offset and systematic phase difference adjustment; this was discovered by experimenting with suppression of the intermodulation distortion (IMD) components...
The next wave of LED lighting technology is likely to be tunable white lighting (TWL) devices which can adjust the colour of the emitted light between warm white (∼ 2700 K) and cool white (∼ 6500 K). This type of lighting system uses LED assemblies of two or more colours each controlled by separate driver channels that independently adjust the current levels to achieve the desired lighting colour...
The multilevel flying capacitor topology is a promising technology for future electric aircraft, where high specific power density power converters are required. Hardware-in-the loop co-design can improve design throughput as more complex implementations of this technology are developed. This paper presents a comparison of hardware-in-the-loop emulation and hardware prototype results for 3-, 5- and...
The switching activity due to various test vectors has direct effect on amount of power consumption during testing. Due to higher switching activity during test mode compared to the switching activity during functional mode the power consumption may be higher than functional mode power consumption. The excessive average and instantaneous power requirement during slow speed and high speed test conditions...
This paper presents methods of phase-amplitude automatic measuring for multichannel APAA. The form of the far-field pattern (width, main-lobe position, side lobe amplitude) directly correlates with amplitude-phase distribution. Modern APAA contains a large number of channels (tens, hundreds), which makes automatic measuring of phase-amplitude characteristics relevant. Testing equipment that was developed...
The purpose of this paper was to design and construction of ankle movement machine for the hemiplegic patients. This machine has adopted the principle of passive and assistive motion exercise for the patient. The designed machine composed of 3 main parts: 1) the set of foot movement consists of machine supporting foot systems and DC motor, 2) the hardware part comprises of microcontroller Arduino...
With the growth of IC technology, power minimization has become a serious concern for the test engineers. Power consumption in test mode is comparatively higher than in functional mode. This high power consumption during testing may generate too much heat which in turn can spoil the circuit under test. Considering the spectrum of low power testing approaches, reduction in dynamic power is viewed here...
Managing the power consumption of circuits and systems is challenging not only during functional operations but also during manufacturing test. This paper discusses industrial practices in this area. It is organized into three main parts. First, we give necessary background and discuss issues arising from excessive power dissipation during test application. Then, we provide an overview of industrial...
Standard qualification methodology or “qual” does not specify product-level testing due to the diverse range of products and use conditions, a limited ability for system-level acceleration, and complication from system-level failures. This is a concern for emerging power-management technologies, since the fundamental switching transitions are not covered. We show that hard-switching with the well-known...
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