CAJ | 학술논문

有效值是衡量振动大小的一个重要指标，因此在振动信号分析的过程中，振动有效值大小的计算是其中较为关键的环节，在有效值测量计算中，一般采用频域或时域的算法。频域算法一般采用傅立叶变换，得出各个频率的振动有效值，再进行叠加，得出有效值总量，时域算法则是根据有效值计算定义，计算出有效值总量。对两种计算方法进行对比分析，得出两种算法的优缺点，同时提出一种修正解决方法，并对该方法进行仿真计算验证，验证结果说明该方法可以有效的提高有效值计算结果精度。
유효치시형량진동대소적일개중요지표，인차재진동신호분석적과정중，진동유효치대소적계산시기중교위관건적배절，재유효치측량계산중，일반채용빈역혹시역적산법。빈역산법일반채용부립협변환，득출각개빈솔적진동유효치，재진행첩가，득출유효치총량，시역산법칙시근거유효치계산정의，계산출유효치총량。대량충계산방법진행대비분석，득출량충산법적우결점，동시제출일충수정해결방법，병대해방법진행방진계산험증，험증결과설명해방법가이유효적제고유효치계산결과정도。
RMS value is an important index to evaluate vibration level.In analyzing the vibration signal,how to calculate the RMS value of vibration is a critical procedure.When calculating the RMS value,it’s common to use frequency-do-main algorithm or time domain algorithm.Fourier transform is commonly used in frequency-domain calculation to work out the vibration RMS value of different frequency.Then these RMS values are superimposed to get the total RMS value.This article contrasts these two methods to examine their pros and cons,and presents a solution to correct the result.Moreover, a simulation is done to verify the solution.The result of the simulation shows that this solution can enhance the accuracy of the RMS value calculation.