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Correct real-time behavior is an important aspect for time sensitive software, but it is difficult to get right. Time faults can be introduced not just during software development but also maintenance. So software maintainers without time information tend to have more chances to introduce unintended time behaviors. In this paper, we propose time change impact analysis to help maintainers estimate...
Moving variance is a signal used in many applications such as propeller speed identification, EMG artifact extraction, and lane-change recognition. It is also used in the preparation of numerous physiological signals for classification and measurement applications because it can be quickly calculated and reflects the movement or power contained in the signal. This paper investigates the effect of...
The modified repetitive control system is a type of servomechanism for a periodic reference input. When modified repetitive control design methods are applied to real systems, the influence of uncertainties in the plant must be considered. In some cases, uncertainties in the plant make the modified repetitive control system unstable, even though the controller was designed to stabilize the nominal...
The aim of this research work is the study and the characterization of electrical and acoustic signals generated by internal partial discharges (PD) in an oil filled chamber. For this purpose, simultaneous measurements were made of three acoustic sensors (ultrasonic PZT) mounted outside on the walls of the chamber and one electric sensor (HF ferrite). The signals were processed with a novel algorithm...
Estimation of soft error sensitivity is crucial in order to devise optimal mitigation solutions that can satisfy reliability requirements with reduced impact on area, performance, and power consumption. In particular, the estimation of Single Event Transient (SET) effects for complex systems that include a microprocessor is challenging, due to the huge potential number of different faults and effects...
This paper concerns the tracking control problem for a class of nonlinear networked control systems (NCSs) with external disturbances. A Takagi-Sugeno fuzzy model is employed to represent the nonlinear controlled plant in the NCSs. Both network-induced delay and packet dropout are addressed. The control scheme is based on a parallel distributed compensation (PDC) structure, a fuzzy observer and a...
This paper presents the automatic control of a temperature chamber. The temperature chambers are used to simulate temperatures from freezing temperatures to very high temperatures. These temperature chambers are often used for testing circuit board in the automotive industry, because this industry requires a big temperature interval. It will be presented three applications which can control temperature...
The assessment of achieved function is essential for both the follow up of therapy and feedback for assistive system. In this paper we present one method of the data processing for signals coming from the inertial sensor. Specifically, we address the assessment of the foot movement; we applied k nearest neighbors classification technique for extracting information regarding qualitative description...
The research deals with the synchronization of the signals to trigger Measurement Instruments (MIs) cooperating in the distributed measurement system. Due to the hardware and software architecture of the Trigger Generator (TrG) common available (es. PC), the signal is received by MIs with random delay. Solution based on Embedded Synchronizing Hardware (ESH) was proposed to ensure synchronization accuracy...
Instrumented software models feature a combination of software functionality as well as timing information to model execution times on embedded processors. They aim to replace instruction set simulators in virtual prototypes (VP) of embedded systems to improve simulation efficiency. In this work, a novel control flow mapping algorithm is presented to automatically generate timing annotations for instrumented...
Based on information security technology of speculation implementation hardware, we design and implement the SHIFT(Speculative Hardware based Information Flow Tracking) system to enhance software security in cloud computing platform. SHIFT system uses that processor support delay exceptions, design and implement efficient dynamic information flow tracking technology. The system can detect low-level...
The PARIS in orbit demonstrator is a novel altimeter concept recently proposed by the European Space Agency with has the objective of observing ocean mesoscale features with an expected sea surface height estimation accuracy of about 20 cm and unprecedented simultaneous spatial-temporal sampling of the ocean. This altimeter is based on the well known PARIS (also defined as GNSS-R) technique, which...
Severe low vision patient cannot read a text clearly. Thus, an instrument engineered for them should have an extra function to read aloud the text. Nowadays, Bahasa Indonesia is still not supported properly in any text to speech modul. This ongoing research is trying to develop an Indonesian text to speech with syllable concatenation. The input of the system comes from a plain text file or manually...
Time to digital converter (TDC) with high resolution is in great demand at present. Transmission delay and its application in a Time to digital technology are studied in this paper. A TDC prototype, mainly contains buffers, delay line and coincidence detection circuit, is designed by this technology. The prototype has a resolution better than 250 ps and a digital range better than 5 ns. The quantization...
It can be concluded that an upper bound has been found for the SNR of the signals at the PARIS-IOD if one-bit quantization is used and a linear cross-correlation with the same shape as the analog correlation is desired. That is, it is not possible to increase the signal SNR at any desired level without distorting the cross-correlation waveform if one-bit digitalization is used. Simulation results...
Research shows a reduced playfulness in children with developmental disabilities. This is a barrier for participation and children's health and wellbeing. IROMEC is a purposely designed robot to support play in impaired children. The reported study evaluates short-term effects of the IROMEC robot toy supporting play in an occupational therapy intervention for children with developmental disabilities...
Comparison of 1pps signals has been applied in the relevant fields, such as time transferring, time keeping, and communication. Time comparison can be carried out in many methods with different precision and the time interval universal instrument is used usually. However, 1pps signals are generated from frequency standard sources so there is the relationship of multi-periods synchronization between...
This system is based on MCU AVR8515 as a central control unit to control data collection and data memory. C language is used in the software programming, completing the program design. The whole system is not only the unique evaluation tool in design, but also the key to obtain the entire shock wave test data.
Our research is related to the development of an anthropomorphic saxophonist robot which reproduced the human organs involved during the saxophone playing. This research approach aims in understanding the human motor control from an engineering point of view and enabling the communication between humans and robots in musical terms. In a previous research, we have presented the Waseda Saxophonist Robot...
At present there is a big demand to the stability test instrument. In this article ,an instrument for measuring Allen devision is designed based on the DDS technology as well as a high precious frequency measurement method that measure the difference frequency's period of the under test frequency and the reference. The instrument's background stability surpasses 4.0×10−12/1s, 1.5×10−12/10s and its...
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