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Power plant control of the embedded data acquisition system had been developed from centralized control, distributed control into fieldbus control. The paper puts forward a design program combining Modbus communication protocol with 32-bit ARM Coretx-M0 microprocessor as its core. The overall design scheme of the system and the content of Modbus Communication Protocol are introduced while the circuit...
Fast intra mode decision algorithms in video coding are very useful and necessary for practical real-time encoder implementation. It reduces the computational complexity by eliminating unlikely modes from candidate set. However, most of these algorithms may lead to the noticeable quality degradation, especially for the all intra coding scenario. To overcome the quality loss while maintaining the fast...
MIL-STD-1553 is a data bus that served the needs of military system for over 35 years. Contemporary applications require much higher data rates than 1553's 1 megabit-per-second data rate. In this paper, a method for increasing the 1553's transmission speed in existing 1553 networks is explored and implemented. The method combines Discrete Multitone (DMT) modulation and 1553 network, and uses a new...
MEMS devices based on bimorphs are affected by several effects including creep, stress, and fracture in bimorph structures. In this paper, we present the reliability study of an S-shaped bimorph MEMS mirror. The following tests are performed: 100 million cycle scanning, vibration, and isothermal holding. Only 0.4% scan angle change was observed after experiencing a 6-axis, 20g vibration. A maximum...
An importance sampling method based on the adaptive Markov chain simulation and support vector density estimation is developed in this paper for efficient structural reliability assessment. The methodology involves the generation of samples that can adaptively populate the important region by the adaptive Metropolis algorithm, and the construction of importance sampling density by support vector density...
In this paper, an anomaly method has been developed for the prognostication and health monitoring of Electronic assemblies under shock and vibration. Previously, damage initiation, damage progression in electronic assemblies have been monitored using state-space vector from resistance spectroscopy and then be analyzed with particle filter (PF) and the theory of Bayesian. Precise resistance measurement...
This research aims to explore the laws governing the drives and motives of the luxury consumption motivation based on the luxury and conspicuous theories. Firstly, this research analysis and discuss four-dimensionality of conspicuous consumption of luxury goods of Chinese customers. Then, the authors evaluate the four factors of influence include luxury brands, patron status, fashions and experiences,...
We propose a decentralized Peer-to-Peer (P2P) Video-on-Demand (VoD) system. The traditional data center architecture is eliminated and is replaced by a large set of distributed, dynamic and individually unreliable helpers. The system leverages the strength of numbers to effect reliable cooperative content distribution, removing the drawbacks of conventional data center architectures including complexity...
One time radial vibration, mostly caused by rotary eccentric load, may reduce the reliability and operating life of motors. In order to mitigate the one time radial vibration in permanent magnet motors, a real time detection method for rotary eccentric load based on the theoretical analysis of the motor vibration and the mechanical analysis was given, and a novel control strategy based on FOC (field...
With the rapid development of the field of industrial process control and the fast popularization of embedded ARM processor, it has been a trend that ARM processor can substitute the single-chip to realize data acquisition and control. A new kind of remote I/O data acquisition system based on embedded ARM platform has been researched and developed in this paper, whose hardware platform use 32-bit...
A novel control method is presented for improving the reliability of transformerless cascade STATCOMs operating under various faults. A modified H bridge circuit is proposed, and it could be totally bypassed under various faults while the STATCOM keep working. During the fault transient, by controlling the phase of a STATCOMpsilas output voltage, the DC capacitors could be charged or discharged to...
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