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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...
This paper introduces a novel design of intelligent control system for a stepper motor, especially the design method of a controller for allocating pulses by using EDA technology. Which makes an excellent control on motor rotate speed and direction, and also positioning accuracy. Moreover, the controlling parameters can be changed optionally. In a word, a stepper motor with the proposed design is...
Studying on human personality is an important part of personalized service in e-Learning system. By understanding the personality characteristics of learners, we can provide better services to help learners improve learning efficiency. Grouping learners can help interaction and discussion among learners in e-Learning system. But how to compose groups is a problem. The paper proposes a method based...
With the exhaustion of water resources, the urban sewage circulation processing has become an indispensable way for the construction of an environmental-friendly, energy-saving and sustainable society. The key is directly determined by the superiority of treatment process and automatic level of control system. For instance, there is a sewage treatment plant in Yinchuan city, which has the sewage treatment...
It has great significance that monitoring temperature and pressure of reactor in chemical experiments and industrial production. In this paper, computer and intelligence instrument are connected by field bus into a small distributed control system, than, develop the on-line monitoring software for reactor based on LabVIEW platform, It has data collection, display, storage and analysis functions, and...
Owing to its small size, light weight, strong function and easily distributed control etc., single-chip microcomputer has been of wide application. However, there are lots of problems in experiment teaching on single-chip microcomputer technology. So, the single-chip microcomputer experiment teaching system for application is development, which can not only meet the experiment teaching in normal,...
The detection on drips velocity is used extensively in medicine or other field such as micro-flow measurement. A cylindrical capacitor sensor is manufactured for drips detection and micro-flow measurement with counting method. The cylindrical capacitor wave when a drip fall into or pass through it; a digital pulse signal is obtained by a chip which is employed to convert capacitance to digital value,...
An automatically inspecting method is presented to check the abrasion of the coupler with non-contact measurement technology. This paper adopts the method of digital image processing to analyze the coupler illustration. The results indicate that the method presented has good accuracy for engineering measurement.
This paper describes the design of a portable thermometer. The main contents include measurement schemes based on thermistor, hardware and software design, sensor calibration and data processing. System hardware design includes MSP430F47116 microcontroller as the core of the system, signal amplification and A/D conversion circuit design. Based on the hardware, through the software design and nonlinear...
It's the trend that sensor network become more standardized and unified as internet of things develops continuously. Aiming at resolving the problems arising from variety of sensors type and interface, this paper presents a design idea of a standardized sensor network node based on virtual instrument and IEEE 1451 standard, and expounds the realization of this sensor node. A concept of sensor node...
Electrical capacitance tomography (ECT) is a typical small samples and nonlinear mapping problem. Support vector machine (SVM) is based on the special small samples theory with strong generalization ability, and is selected as an optimal theory for small samples classify problem. In this paper the ECT image reconstruction algorithms based on C-SVM is proposed and a novel training method is proposed...
Due to the shortcoming of linear normalization for sensitivity in electrical tomography system, nonlinear formulas are derived about electrical resistance tomography (ERT), capacitance tomography (ECT) and electromagnetic tomography (EMT). Those formulas are deduced according to the characteristics of analytical solution and system structure. The role of normalization in data processing is introduced...
This paper introduces software and hardware design part of TMS320VC5402 digital signal processor as the core of high voltage circuit breaker intelligent releaser. This releaser has the following functions: tripping function; Measurement function; Diagnosis function; Automatic reclosing phase selection function. It To has important practical significance to improve the level of the intelligent high...
This paper based on MC9S12XS128 microcontroller and CCD camera which intelligent auto-tracing car using tracking, proposed an innovative method of acclimatizing oneself to environment. The system selected the digital potentiometer AD5160 and comparator LM319 realizes the external hardware binary of the image signal, while through single-chip internal AD acquisition image information, and set compare...
Open experiment is the important content of teaching reform. In order to cooperate in open experiment and utilize network and multimedia technique, a network teaching information system is developed in the paper. The system realizes experiment “teaching” and “studying” by network Furthermore, it provides the essential condition for open laboratory in time and space. This is the experimental network...
An atomic absorption spectrometer usually uses a hollow cathode lamp as the light source. As a result being aging or affected by the external environment, the light intensity of the camp would suffer a excursion, which will decrease the stability and precision of the elements measurement. This paper introduces a measurement and control system of the light intensity, which adopts MCU C8051F021 as the...
Although passive queue management is defective, it is simpler than active queue management algorithm, so it is still widely used in Internet. In order to improve the deficiencies, the multi-dropping packets passive queue management algorithm is proposed. When the queue is full, randomly multi-dropping packets. Simulation results show that this algorithm develops the transmission performance of the...
The problems are analyzed during the teaching process of analog electronics course. To solve these problems the project-based learning method (PBLM) is used to explore the teaching reform theory and practice. In the light of characteristics and requirement of analog electronics course, the five key steps of PBLM is designed and introduced by a practical example. Practice of teaching students shows...
In exhibition to roboticized plant and large-scale complicated equipment, existing two-dimensional interface technology in industrial monitor and control (IMC) system has a lack of expressive force. It is required to add the dimension of information expression, and enhance the expressive force and interaction ability of IMC interface system via three-dimensional virtual reality technology, X3D as...
In order to satisfy the needs of effective and accurate test for the control board of control and protective switching devices, an automatic test system based on LabVIEW was studied in this paper. The system used high-speed acquisition card to output control signals and acquire the test signals during the test; the software developed by LabVIEW was used to acquire and analyze the test signals to realize...
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