托卡马克长脉冲操作智能数字积分器的研制

IF 0.3 1区艺术学 0 MUSIC

NINETEENTH CENTURY MUSIC Pub Date : 2002-11-07 DOI:10.1109/FUSION.2002.1027669

Y. Kawarnata, I. Yonekawa, K. Kurihara

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引用次数: 12

摘要

在JT-60上研制了一种新型高输入电压、长时间低漂移速度的数字积分器。该积分器使用一对电压-频率转换器(VFC)和一个上下计数器(UDC) (VFC-UDC单元)的积分方法。然而，该方法对于大输入存在VFC饱和，导致积分误差。为了改进它，新的数字积分器由三组并联的VFC-UDC单元和一个数字信号处理器(DSP)组成。三个不同输入范围的VFC-UDC单元分别对同一个输入信号进行积分，DSP在三个积分输出中选择一个合适的积分信号，采样频率为10khz，形成一个积分信号链。积分器的性能在JT-60中进行了破坏性放电测试。在输入大信号的情况下，取得了较好的积分效果。此外，描述了VFC的基本特性，线性度，热漂移，死区，这些都是导致积分误差的原因。

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Development of an intelligent digital integrator for long-pulse operation in a tokamak

A new digital integrator with high input voltage and a long-time low drift speed has been developed in JT-60. This integrator uses an integrating method with a pair of a voltage-to-frequency converter (VFC) and an up and down counter (UDC) (VFC-UDC unit). However, this method has a saturation of the VFC for large input, leading to integration error. To improve it, the new digital integrator is composed of three sets of VFC-UDC units in parallel and a digital signal processor (DSP). Three VFC-UDC units with different input ranges integrate an identical input signal respectively, and the DSP selects a suitable integrated signal among three integrated outputs at a sampling frequency of 10 kHz and makes a chain of integrated signals. The performance of the integrator has been tested using a disruptive discharge in JT-60. A good integration result has been obtained though large signal is input. Also, fundamental characteristics of the VFC, linearity, thermal drift, dead band, which are causes of integration errors, are described.

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来源期刊

NINETEENTH CENTURY MUSIC MUSIC-

CiteScore

0.40

自引率

0.00%

发文量

期刊介绍： 19th-Century Music covers all aspects of Western art music between the mid-eighteenth and mid-twentieth centuries. We welcome--in no particular order--considerations of composers and compositions, styles, performance, historical watersheds, cultural formations, critical methods, musical institutions, ideas, and topics not named on this list. Our aim is to publish contributions to ongoing conversations at the leading edge of musical and multidisciplinary scholarship.