查询词典 arithmetic expression

Because of shortcomings of fuzzy controller,a fuzzy controller of self-tuning proportionality factor based on PI arithmetic is presented.

0引言模糊控制是以模糊集合论、模糊语言变量及模糊逻辑推理为基础的计算机智能控制。它不要求知道被控对象的精确数学模型，只需要提供现场操作人员的经验知识及操作数据。

PI arithmetic is utilized in fuzzy controller to adjust the proportionality factor of fuzzy controller automatically.

模糊控制器与工业过程控制中常用的PID控制器相比具有一定的优点，而它的一个最大缺点就是精度不太高。

The simulation on a system of boiler drum water level control indicates that the fuzzy controller of self-tuning proportionality factor based on PI arithmetic can improve the performance of fuzzy control system and can control the fallacious water level.

为减小模糊控制器的误差，最常用的就是将PID控制与模糊控制结合起来，从而构成模糊PID控制。然而由于引入了积分作用，使得控制过程的响应时间大大增长，失去了模糊控制响应快速的特点。

Now, the increase of complication in structure and fast-breaking of SOC design method make some arithmetic easy to realization in hardware.

由于ASIC的集成度越来越高，以及片上系统设计方法的迅速发展，使得许多以前无法在硬件上实现的算法现在很容易实现。

The general process of fault signal by using wavelet analysis and the Mallat arithmetic about wavelet were introduced.

介绍了小波变换的一维Mallat塔式算法以及小波变换在信号处理中的一般过程。

First of all, this paper introduces the whole design project and interrelated knowledge about Non-destructive detection, ultrasonic detection, and Phased-Array ultrasonic detection Then the paper depicts the principle of Phased-Array focus and abstracts a set of math model and feasible arithmetic on the base of the real parameter of the system. Put forward several problems that exist during the course of system development and program. Introduce some measures of distinguish that are often used in non-destructive detecting and echo wave crest. Then I depict one of the measures in detail that used in the course of non-destructive detection, which is the way of distinguishing whether defects exist or not. Then provide part core program to realize it. This paper also provides main flow chart through analyzing how main control program controls different parts to make the whole system more effective.

然后在文中以较大的篇幅，描述了相控阵聚焦的原理，并根据该系统的实际参数，抽象出一套数学模型和可行的算法，在此基础上提出了在系统开发过程及编程实现过程中存在的一些问题；介绍了在无损检测中缺陷的分类和对回波峰常用的识别方法，详述了系统开发过程中使用的其中一种识别方法，即判别是否存在缺陷的算法，并给出实现之的部分核心程序；详述主控程序如何控制各部分并协调各相关软件的工作，使整个系统发挥最高效能，并给出主要设计框图和程序。

Given your daughter's fecundity and some basic arithmetic it is quite clear that you cannot simultaneously give equal shares to grandchildren and to children.

考虑到你女儿孩子多，做一些基本的算术，你就会清楚的发现，你不可能同时在孙辈和子女之间进行公平的分配。

However, taking into account the 16th and 17th centuries when European mathematicians still held the view that negative is "ridiculous number", Fibonacci's awareness of the negative undoubtedly is of great significance.4、Fibonacci's understanding of the irrational depends on the geometry, and the arithmetic of Fibonacci for square root was the tendency of algorithm.

虽他忽视二次方程之负数解，但考虑到16和17世纪，欧洲数学家仍认为负数是"荒谬的数"，斐波那契对负数的认识无疑具有重要的意义。4、斐波那契对无理数的认识有赖于几何图形，"开方法"趋于算法化。

The use of arithmetic coding method to achieve the file compression and decompression.

详细说明：利用算术编码的方法实现文件的压缩与解压缩。

On the aspect of error compensation, the system using the geometric average sound pressure instead of the arithmetic average sound pressure to get the sound pressure of the measurement point. This method not only reduces the high frequency error in the sound intensity measurement, which compensates the finite difference approximation error, but also greatly reduces the computation of the sound pressure spectrum.

误差补偿方面，课题采用几何平均声压代替通常的算术平均声压来计算双传声器法的声场声压值，这样不仅可以有效的减少声强测量中的高频误差，对有限差分误差起到了补偿作用，而且还大大减小了声压谱计算中的计算量。

The role of the environment is very important.

的作用，环境是非常重要的。

At that time, the High Court of England and Wales Court of Queen's Bench president of William Murray, Lord Mansfield in June 22, 1772 ruling:"No matter then there is the inconvenience, but there must be a decision, I can not say that this case under the law in England are permitted or authorized; are so black should be released."

当时的英格兰及威尔士高等法院王座法庭院长William Murray， Lord Mansfield于1772年6月22日宣判：「无论有那麽不便，但总要有个决定，我不能说这件案在英格兰法律之下是准许或认可；所以黑人是应该被释放。