Thomas Dehaeze
6e3677eb29
Folder name is changed, rework the html templates Change the organisation.
200 lines
5.1 KiB
Matlab
200 lines
5.1 KiB
Matlab
%% Title: id31 microstation in EXP hutch for RAW data
|
|
% Date: 12 october 2018
|
|
|
|
%% NOTE
|
|
% With this file you can load the raw mat files
|
|
|
|
%% Description: measure on id31 microstation in exp hutch
|
|
|
|
% FS: =256Hz
|
|
|
|
|
|
|
|
% all L28 (31V/m/s) except CH1 L4-C (276V/m/s)
|
|
% ch1: marble Z
|
|
% ch2: outer frame Ty Z
|
|
% ch3: inner frame Tilt Z
|
|
% ch4: hexa Z
|
|
% ch5: marble H
|
|
% ch6: outer frame TY H
|
|
% ch7: inner frame Tilt H
|
|
% ch8: hexa H
|
|
% ch9: hammer
|
|
|
|
%% measurements 12 october 2018
|
|
|
|
% excitation Y marble corner
|
|
% Measurement1
|
|
|
|
% excitation Y outer frame corner
|
|
% Measurement2
|
|
|
|
% excitation Y hexa
|
|
% Measurement3
|
|
|
|
% ------------------------------------------------
|
|
|
|
% excitation Z marble corner
|
|
% Measurement4
|
|
|
|
% excitation Z outer frame corner
|
|
% Measurement5
|
|
|
|
% excitation Z hexa
|
|
% Measurement6
|
|
|
|
% ------------------------------------------------
|
|
|
|
% excitation X marble corner
|
|
% Measurement7
|
|
|
|
% excitation X outer frame corner
|
|
% Measurement8
|
|
|
|
% excitation X hexa
|
|
% Measurement9
|
|
|
|
%%
|
|
microstation=['Marble '; 'TY ';'Tilt '; 'Hexapod '];
|
|
|
|
%
|
|
%% PARAMETERS
|
|
|
|
beamline='ID31 Nanostation - Hammer testing';
|
|
% --------------------------------
|
|
%%----------OROS -----------------
|
|
ch_max=16;
|
|
% --------------------------------
|
|
|
|
%mult=1e6/276*173; % --> m/s to micron/s and sensitivity correction for L4-C
|
|
|
|
nyqhp=2.56; % nyquist
|
|
f_cut=0.5; % cut frequency for high pass filter
|
|
t_win=4; % window length in sec
|
|
t_ovlp=0; % overlap window in sec
|
|
|
|
%d=1.3; % distance between vertical sensors
|
|
|
|
|
|
warning off MATLAB:divideByZero
|
|
|
|
% specify capt # for which to run this
|
|
capt=[1:9];
|
|
|
|
% specify channels for which shut correction must be applied
|
|
shunt_ch=[1];
|
|
|
|
% in case of hammer inpacts specify capt # where it doesnt occur
|
|
no_hammer=[];
|
|
%no_hammer=[0];
|
|
% specify hammer channel (or ch to find peak due to impacts)
|
|
shock_ch=9;
|
|
|
|
%% main loop --------
|
|
% ------------------
|
|
for i=capt
|
|
|
|
|
|
eval(['load Measurement_raw',num2str(i)])
|
|
freq_max=Track1_TrueBandWidth;
|
|
dts=1/(freq_max*nyqhp);
|
|
|
|
freq=linspace(0,freq_max,t_win*freq_max);
|
|
wo=2*pi*freq;
|
|
|
|
for k=1:ch_max
|
|
vname=['Track',num2str(k)];
|
|
array_exist(k)=ismember(vname,who);
|
|
end
|
|
non_zero=find(array_exist);
|
|
for z=non_zero(1):length(non_zero)
|
|
track_nb=['Track',num2str(z)]';
|
|
eval(['data(:,z)=Track',num2str(z),';']);
|
|
end
|
|
c=data*mult;
|
|
|
|
|
|
|
|
%-------------
|
|
nbch=size(c,2);
|
|
%-------------
|
|
r=length(c);
|
|
if r/2~=fix(r/2) % loop to test for odd or even nb of samples
|
|
c=c(1:r-1,:); % take only even
|
|
else
|
|
end
|
|
%------------------------------
|
|
time=linspace(0,length(c)*dts,length(c));
|
|
|
|
for j=nbch %shunt_ch
|
|
[c(:,j),c_shut]=shut_c(c(:,j),1/dts); % correct for shunt
|
|
end
|
|
%c(:,8)=(c(:,5)-c(:,4))/d; % differential Theta Y angle
|
|
|
|
b=find(no_hammer==i); % if i==1 | i==2 | i==6
|
|
if b~=0
|
|
[psd_v,integ_v,psd_d,integ_d]=integrated_psd(c,t_win,t_ovlp,nyqhp,dts);
|
|
[frz_cut,crsp,pwsp,coherz,nsp]=fqresp(c,shock_ch,t_win,t_ovlp,nyqhp,dts);
|
|
|
|
else
|
|
|
|
thresh=0.5; % threshold of max value
|
|
sep=2.5; % separation minimum of peaks in sec
|
|
pre_ev=2; % pre event delay in sec
|
|
pos_ev=2; % post event delay in sec
|
|
|
|
[ti,t_impact]=findpeaks(c(:,shock_ch),'minpeakheight',max(c(:,shock_ch))*thresh,'minpeakdistance',ceil(sep/dts));
|
|
% find times at which there are impacts (threshold of max and separated by sep sec)
|
|
|
|
psd_v=zeros((pre_ev+pos_ev)/dts/nyqhp,nbch);
|
|
psd_d=zeros((pre_ev+pos_ev)/dts/nyqhp,nbch);
|
|
frz_cut=zeros((pre_ev+pos_ev)/dts/nyqhp,nbch);
|
|
|
|
for k=1:length(t_impact)
|
|
ibeg=fix(t_impact(k)-(pre_ev/dts));
|
|
iend=fix(t_impact(k)+(pos_ev/dts));
|
|
freq_s=linspace(0,freq_max,t_win/2*freq_max);
|
|
if ibeg>1 && iend<length(c) % eliminate indexes outside data range
|
|
[psd,integ_v,psd_int,integ_d]=integrated_psd(c(ibeg:iend,:),t_win,t_ovlp,nyqhp,dts);
|
|
psd_v=psd+psd_v;
|
|
psd_d=psd_int+psd_d;
|
|
[frz,crsp,pwsp,coherz,nsp]=fqresp(c(ibeg:iend,:),shock_ch,t_win,t_ovlp,nyqhp,dts);
|
|
frz_cut=frz+frz_cut;
|
|
end
|
|
|
|
end
|
|
|
|
psd_v=psd_v/length(t_impact);
|
|
psd_d=psd_d/length(t_impact);
|
|
frz_cut=frz_cut/length(t_impact);
|
|
|
|
end
|
|
|
|
|
|
|
|
|
|
drms=max(integ_d); % compute rms level
|
|
dc=hpfint(c,f_cut,dts); % filter and integrate in time domain
|
|
dppc=hpdpp(dc,t_win,t_ovlp,1,dts); % compute peak to peak level
|
|
|
|
|
|
%% transfer function, cross spectrum, power spectr. and coherence w.r.t. ch1
|
|
|
|
eval(['c',num2str(i),'=c;'])
|
|
eval(['dc',num2str(i),'=dc;'])
|
|
eval(['dppc',num2str(i),'=dppc;'])
|
|
eval(['drms',num2str(i),'=drms;'])
|
|
eval(['psd_v',num2str(i),'=psd_v;']) % already integrated in OROS
|
|
eval(['psd_d',num2str(i),'=psd_d;'])
|
|
eval(['integ_v',num2str(i),'=integ_v;'])
|
|
eval(['integ_d',num2str(i),'=integ_d;'])
|
|
eval(['frz',num2str(i),'=frz_cut;'])
|
|
% eval(['frh',num2str(i),'=frh_cut;'])
|
|
% eval(['frx',num2str(i),'=frx;'])
|
|
eval(['coherz',num2str(i),'=coherz;'])
|
|
eval(['time',num2str(i),'=time;'])
|
|
|
|
clear data c dc psd psd_v psd_d time c_shut % clean up the mess
|
|
|
|
|
|
end |