Use a Hann window half as long as the measured signals. Specify that the output is the displacement of the mass. wind = hann(N/2); [frf,f] = modalfrf(u',y',Fs,wind,Sensor="dis"); The frequency-response function
The MATLAB system consists of these main parts: 2. (1) (2) (3) (4) Discrete Fourier Transform (DFT) Fast Fourier Transform (FFT) Function Summary 3 (1) O Demos (2) Building Models (3) (4) 4 5. 6. 7. 实验一BasicKnowledge 【ExperimentalPurposes】 1、熟悉并掌握MATLAB的工作环境。
sys= ssregest(tt,nx)estimates a discrete-time state-space model by reduction of a regularized ARX model, using the all the input and output signals in the timetablett. You can use this syntax for SISO and MIMO systems. The function assumes that the last variable in the timetable is the...
2 、离散傅里叶变换( Discrete Fourier Transform ,缩写为 DFT),是傅里叶变换在时域和频域上都呈离散的形式,将信号的时 域采样变换为其 DTFT 的频域采样。在形式上,变换两端(时域和频域 上)的序列是有限长的,而实际上这两组序列都应当被认为是离散周 期信号的主值序列。即使对有限长的离散信号作 DFT,也应当...
This MATLAB function estimates a discrete-time state-space model by reduction of a regularized ARX model, using the all the input and output signals in the timetable tt.
Description: Hankel matrix with factorial elements Syntax: [A,beta] = gallery("ipjfact",n,k) returns an n-by-n Hankel matrix A and its determinant beta, which is known explicitly. The inverse of A is also known explicitly. If k = 0 (default), then the elements of A are A(i,j)...
LS and MPM perform best. When filtering mfVEP records in the Prony domain, the value of the area under the receiver-operating-characteristic (ROC) curve is 0.7055 compared with 0.6538 obtained with the usual filtering method used for this type of signal (discrete Fourier transform low-pass filt...