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In the modern manufacturing industry, the application of industrial machines has expanded to a wider range of fields. The reliability of industrial machines is the main technical indicator to measure the quality of industrial machines. Frequency Conversion Power Supply manufacturing and application should pay attention to the reliability problem from the very beginning. The reliability of the Frequency Conv

In the development of applications under Windows, often need to use the timing, especially in some of the more time-demanding programs, the accuracy of the timing is very important, this article introduces two precise timing methods, the accuracy of the timing can be achieved MS level, and can be considered to be accurate, Can be used as a benchmark for time in most cases. Using API functions:: timeGetTime () to get the number of MS from the boot to the current, its return type is a DWORD type,

Approximate solution of natural frequency of simply supported beam by the method of% transfer matrix clcclearsyms p qSp = sym (' [1 0 0 0;0 1 0 0;0 0 1 0;x 0 0 1] '); % point transfer Matrix SF = Sym (' [1 1 1/2 1/6;0 1 1 1/2;0 0 1 1;0 0 0 1] '); % field transfer Matrix n = input (' Input partition Unit number: '); S = ((sf*sp) ^ (n-1)) *sf; % of the transfer matrix between the two ends of the support for the natural

previous article, but in fact, FFT is widely used as a fast algorithm because of the slow DFT calculation, the formula of DFT and IDFT is as follows:the derivation process of two-dimensional DFT formula is the same as one-dimensional, the continuous Fourier transform is sampled or the original data period is copied after the Fourier series is computed, and then the main value is not discussed here. Propertiesrelationship between space and frequency

　　memory frequency is the same as CPU frequency, is used to represent the speed of memory, it represents the maximum operating frequency that memory can achieve. The memory frequency is measured in MHz (MHz). the higher the memory frequency is to a certain extent, the faster

DDR4 How much memory frequency is appropriate? For computer enthusiasts, the greater the memory frequency, the faster the speed is relative. In today's latest DDR4 memory era, how much memory frequency is appropriate? Today's small series will share the DDR4 memory high and low frequency on the computer performance and

ADC conversion is the input analog signal volume, the microcontroller converted to digital volume. Reading the number must wait for the conversion to complete, the completion of a channel reading is called the sampling period. Sampling period generally = conversion time + read time. The conversion time = sampling time + 12.5 clock cycles. The sampling time is the time you tell the STM32 sampling analog through the register, the longer the setting the more accurateDetermination of sampling

PackageSearch;ImportJava.io.BufferedReader;ImportJava.io.File;ImportJava.io.FileReader;Importjava.io.IOException;Importjava.util.ArrayList;Importjava.util.Collections;ImportJava.util.Comparator;Importjava.util.List;ImportJava.util.Map;ImportJava.util.Map.Entry;ImportJava.util.Scanner;ImportJava.util.TreeMap; Public classUpdatewordsearch {/*** Input File Save separated words collection after saving statistics*/String article;//Save the contents of an articlestring[] rwords; String[] words; int

Word Frequency Statistics UpdateImplementation function: Input the file path from the console, and count the total number of words and the number of words not duplicated, and output all word frequency, and sorting.Header file1 #include 2 #include 3 #include string.h>Defining macros#define Word_length 250Defining structures and global variablesstruct node{ char word[word_length]; int Time ; struc

Before buying a computer, we must understand the relevant configuration of the computer, memory, graphics, frequency, etc., but you know what the working frequency of computer memory? The following look at the small series to introduce you to the introduction bar. Memory frequency is the same as CPU frequency, is used

In recent days, the site optimization mixed kid in their own area QQ group saw several groups of friends in the discussion article update frequency of this problem, one of the topics caught my attention, the exact words "someone's Wuhan SEO site updated 3 daily, and my site only one weeks to update 1 articles, My blog ranking how compared to people ah ", at that time did not participate in the discussion, but the rise today, think of this topic, and t

Recently looking at DDR3 's document, talking about the frequency of DDR3, I actually want to know in DDR3 's document, the lowest frequency definition is DDR3 800 (actually this frequency can be reduced, but the official recommended the lowest value only), I want to know how this 800 came, The following DRAM pin names are written according to DDR3 Spec, first we

Source: DC Motor Drive PWM frequency1, there is no unified standard, in fact, the frequency of PWM and your motor inductance and you need the speed response time has a great relationship. The general motor with 14K is enough. Of course, since the need for a simple speed adjustment can be casually selected. If the motor speed is relatively high, inductance is relatively small, you can use a relatively high frequenc