共查询到20条相似文献,搜索用时 892 毫秒
1.
2.
3.
本文介绍了基于FPGA平台矿用馈电开关智能保护器的基本原理,描述了短路保护、漏电保护、过载保护等智能保护措施的设计方法和实现过程。 相似文献
4.
5.
6.
文章介绍了一种基于双控制器的矿用馈电开关的设计方案。该馈电开关采用单片机和DSP双控制器设计,实现了数据采集处理和故障判断功能的分离,大大提高了运行速度和智能化水平,还具有过载、缺相保护、短路保护、不平衡保护、漏电闭锁保护、漏电保护和选择性漏电保护功能。测试结果表明,该馈电开关性能稳定,运行速度快,精度较高。 相似文献
7.
8.
9.
10.
矿用隔爆兼本质安全型双回路真空组合开关以ATMEGA128单片机为控制核心,结合硬件结构,可满足各种功能要求。文章详细介绍了该组合开关测控系统的整体设计、保护性能设计及软件设计等。 相似文献
11.
This article describes the rationale for the multiphase creative problem solving process, and reports the findings from an empirical investigation conducted to facilitate the problem solving of managers. The ideational skills of the managers were assessed before and after training in a complete process of creative problem solving, along with their ideational attitudes, creative problem solving style (i.e., generator, conceptualizer, optimizer, or implementor), and evaluative skill (i.e., ability to recognize original ideas). The most important findings indicated that the training had a significant impact on the evaluative accuracy of the managers. They were significantly more accurate in their judgments about original ideas after training, both in their identification of original ideas and their recognition of unoriginal ideas. After training, the managers also gave more solutions and more original solutions to problems. Finally, several variables (e.g., the “preference for active divergence” attitude, and the conceptualizer process style) seemed to moderate the impact of training. Training was therefore effective, with specific effects that can be predicted from pre-training individual differences in attitudes and process style. 相似文献
12.
13.
The deep connection between the Burrows–Wheeler transform (BWT) and the so-called rank and select data structures for symbol sequences is the basis of most successful approaches to compressed text indexing. Rank of a symbol at a given position equals the number of times the symbol appears in the corresponding prefix of the sequence. Select is the inverse, retrieving the positions of the symbol occurrences. It has been shown that improvements to rank/select algorithms, in combination with the BWT, turn into improved compressed text indexes. 相似文献
14.
15.
16.
17.
18.
为提高高等院校的管理水平和决策水平,充分利用校园网资 源,开发了高等院校行政财政分析与决策系统。解决了诸如数据的动态查询、自动生成报表 、网络环境下数据共享等技术问题,具有网上数据共享、图形界面友好和安全的保密措施等 特点。 相似文献
19.
Harshavardhana P. Jonckheere E. Silverman L. 《Automatic Control, IEEE Transactions on》1984,29(8):744-746
A new method of stochastic model reduction has recently been introduced by Desai et al. [1], [2]. The stability of the reduced order model has not previously, been considered. In this paper, we show that the stability of the reduced order model follows directly from the results of Pernebo and Silverman [3]. It is also shown that the reduced order model is minimal, in the controllability/observability sense. The relevance of this notion of minimality to stochastic minimality is made clear. 相似文献
20.