典型文献
Fast Square Root Calculation without Division for High Performance Control Systems of Power Electronics
文献摘要：
The calculation of square roots is a frequently used operation in control systems of power electronics for different applications: motor drives, power converters, etc. At the same time, the execution of this procedure significantly loads microcontrollers and uses its power, which can be utilized for performing other important tasks. Therefore, it restricts the size of code, which can be processed by the microcontroller and compels developers to limit the number of functions, or to decrease execution frequency of a program. Thus, the calculation of square roots is a bottle-neck in implementation of high-performance control systems, thus effective optimization of this task is extremely important in modern and efficient devices. In respect that many applications do not need precise calculation of square roots, the optimization of execution time can be achieved by decreasing of precision of the result. The proposed technique is based on the approximation of parabola with hyperbola, which allows you to rapidly find the approximate value of a square root. Taking into account that many digital signal processors (DSP) are not equipped with an effective divider, the developed algorithm does not use divisions, so it can be executed faster. The payback for this optimization is approximation error with a maximum of 0.5％, however, it is acceptable for the overwhelming majority of control systems.
文献关键词：
中图分类号：
作者姓名：
Anton Dianov;Alecksey Anuchin;Alexey Bodrov
作者机构：
Daeyoung R&D center,16954,Yongin,Korea;"Electrical Drives Department"with National Research University"Moscow Power Engineering Institute",111250,Moscow,Russia;School of Engineering,the University of Manchester,Manchester,UK
文献出处：
引用格式：
[1]Anton Dianov;Alecksey Anuchin;Alexey Bodrov-.Fast Square Root Calculation without Division for High Performance Control Systems of Power Electronics)[J].中国电工技术学会电机与系统学报（英文）,2022(02):145-152
A类：
microcontrollers,compels,hyperbola
B类：
Fast,Square,Root,Calculation,without,Division,High,Performance,Control,Systems,Power,Electronics,calculation,square,roots,frequently,used,operation,systems,power,electronics,different,applications,motor,drives,converters,etc,At,same,execution,this,procedure,significantly,loads,uses,its,which,utilized,performing,other,important,tasks,Therefore,restricts,size,code,processed,by,developers,limit,number,functions,decrease,frequency,program,Thus,bottle,neck,implementation,high,performance,thus,effective,optimization,extremely,modern,efficient,devices,In,respect,that,many,not,need,precise,achieved,decreasing,precision,result,proposed,technique,approximation,parabola,allows,you,rapidly,find,approximate,value,Taking,into,account,digital,signal,processors,DSP,equipped,divider,developed,algorithm,does,divisions,executed,faster,payback,error,maximum,however,acceptable,overwhelming,majority
AB值：
0.590857
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