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A low insertion-loss ultra-wideband (UWB) bandpass filter (BP-filter) with two finite transmission zeros (fz1 and fz2) at high-frequency stop-band by 0.18 μm CMOS technology was demonstrated. Fz1 (the lower frequency one) and fz2 can be tuned individually by the shunt branch (L2, Rs2, C3 and C4+Cp2) and the series inductor (L1, Rs1 and Cp1), respectively. The micro-stripline (MSL) interconnection...
Multiple fundamental frequency estimation, or Multiple-F0 estimation, is one of the most important problem on automatic music transcription, but it has not been well resolved up to now. This paper presents a machine learning methods using harmonic matching and iterative deletion for computer-synthesized music specifically to Multiple-F0 estimation. Computer-synthesized music is almost free from similar...
The existing capacitively coupled contactless conductivity detection (C4D) sensors are mainly used to detect the conductivity/ion concentration in capillary tube. A new sensor for conductivity measurement in large-scale pipes is developed based on the C4D technique. A quartz crystal is introduced to eliminate the influence of the coupling capacitances. Meanwhile, a quartz crystal oscillator is designed...
Backward reasoning is an algorithm to seek for sufficient conditions of fault based on monitored system level faults. Aiming at characteristics of modern complex communication equipment fault treatment and combining with fault Petri nets theory, a fault backward reasoning method of complex equipment based on Petri nets was presented. The algorithm uses depth-first search (DFS) strategy to access sufficient...
A new modeling method which compounds Multilevel Flow Model (MFM) with Petri-net is put forwards in order to solve the difficulty problem in fault locating for batch process of flow industry. The first step in modeling is to create a Petri-net which also can be used as an information network in MFM. The goal of the Petri-net set up is to describe the system status as being a no fault goal of MFM....
This paper presents a new fault-location method. The method does not require line parameters, which is often affected by the load and weather. The algorithm utilizes unsynchronized data acquired from both terminals of transmission lines. First the distance formula containing synchronized angle, voltage and current is performed with a lumped parameter line model. Then the results are utilized for an...
In the industry and agriculture, a temperature object often has many complex characteristics such as nonlinear, large time delay, time-variable, strong coupling and so on. We introduce a kind of the fuzzy self-tuning PID temperature control system based on ARM9. Experiment results are shown that this system has high accuracy, rapid respond, good real-time capability and good stability performance.
This paper proposed the method that AC power transformed DC power of dynamic braking by three-phase bridge type diode rectifier and step-down chopping, it mainly applied to three-phase asynchronous motor dynamic braking on the occasion that requiring smooth braking and frequent starting and braking. This paper briefly expounded the principle of three-phase asynchronous motor dynamic braking and three-phase...
Open source communities play an important role in open source software's development. Performance shows the result of all activities in an open source community (OSC). Based on the analysis of the components of an OSC and its knowledge sharing approaches, a reference model for evaluating performance of an OSC is presented, which consists of a new index system and a method based on Delphi-Ideal for...
This paper is an overview of research about the brake noise of vehicle in the past two years in china. First, a brief introduction to noise threat and research significance of brake noise of vehicle is given. Meanwhile, a brief introduction to the basic principle of the brake noise of vehicle is introduced. Then, the research of brake noise of vehicle in the past two years in china is presented and...
In the management of the online public opinion and Internet intelligent information, people need to obtain the content of the forum threads for further research on the topic emotion and the dissemination of forum topics. This paper presents a method based on templates to extract web forum contents. Proposed method overcomes the problem which caused by the change of the web pages structures and contents,...
For downlink MU-MIMO systems, The BD-GMD scheme is an optimal precoding scheme. Because the number of simultaneously supportable users of BD-GMD scheme is limited by the mininum of the numbers of transmitting and receiving antennae. In a downlink MU-MIMO system with a large number of users, the base station may choose a subset of users to serve simultaneously in order to maximize the total throughput...
We have demonstrated a voltage reference circuit with ultra-low power by a standard 0.5 μm complementary metal oxide semiconductor (CMOS) N-well process. Two voltages with opposite temperature coefficient are added to produce a reference voltage which is approximately equal to the threshold voltage of a metallic oxide semiconductor field effect transistor (MOFET) at absolute temperature of zero degree...
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