Convert dSPACE ControlDesk measurements to MATLAB/Simulink timeseries (updated)

May 29, 2018 1 comment Article Uncategorized nspo

With this updated MATLAB script, multiple dSPACE ControlDesk measurements can be imported with a single execution
The result is saved as a tscollection (collection of timeseries) and all signals are saved with their corresponding name
Access imported data with Simulink ‘From Workspace’ block and, e.g., dsp_tscs{1}.my_signal

Example console output (files can be selected within a GUI window):

>> import_dspace_mat_to_simulink_ts

Time Series Collection Object: testmode2-y120-leer.mat

Time vector characteristics

      Start time            0 seconds
      End time              1.779970e+01 seconds

Member Time Series Objects:

      CLOCK
      (...)
      yn_soll_U_s
      yp_vorg_cm_s

Time Series Collection Object: testmode2-y120-leicht.mat

Time vector characteristics

      Start time            0 seconds
      End time              2.220077e+01 seconds

Member Time Series Objects:

      CLOCK
      (...)
      yn_soll_U_s
      yp_vorg_cm_s

Time Series Collection Object: testmode2-y120-schwer.mat

Time vector characteristics

      Start time            0 seconds
      End time              1.570162e+01 seconds

Member Time Series Objects:

      CLOCK
      (...)
      yn_soll_U_s
      yp_vorg_cm_s

-- Saved data from testmode2-y120-leer.mat in tscollection dsp_tscs{1}
-- Saved data from testmode2-y120-leicht.mat in tscollection dsp_tscs{2}
-- Saved data from testmode2-y120-schwer.mat in tscollection dsp_tscs{3}

>> import_dspace_mat_to_simulink_ts

Time Series Collection Object: testmode2-y120-leer.mat

Time vector characteristics

Start time 0 seconds

End time 1.779970e+01 seconds

Member Time Series Objects:

CLOCK

(...)

yn_soll_U_s

yp_vorg_cm_s

Time Series Collection Object: testmode2-y120-leicht.mat

Time vector characteristics

Start time 0 seconds

End time 2.220077e+01 seconds

Member Time Series Objects:

CLOCK

(...)

yn_soll_U_s

yp_vorg_cm_s

Time Series Collection Object: testmode2-y120-schwer.mat

Time vector characteristics

Start time 0 seconds

End time 1.570162e+01 seconds

Member Time Series Objects:

CLOCK

(...)

yn_soll_U_s

yp_vorg_cm_s

-- Saved data from testmode2-y120-leer.mat in tscollection dsp_tscs{1}

-- Saved data from testmode2-y120-leicht.mat in tscollection dsp_tscs{2}

-- Saved data from testmode2-y120-schwer.mat in tscollection dsp_tscs{3}

Script:

% dspace mat export to tscollection that can be used with 'From
% Workspace' in Simulink

[filenames, paths] = uigetfile('*.mat', 'Select dSPACE mat files', 'MultiSelect', 'on');
dspace_files = cellstr(fullfile(paths, filenames));

filenames = cellstr(filenames);

% store all tscollections in a cell array (so multiple files can be loaded at once)
dsp_tscs = {};

for i=1:length(dspace_files)
current_data = importdata(dspace_files{i});


ynames = {current_data.Y.('Name')};
ynames = matlab.lang.makeUniqueStrings(ynames);

dsp_ts = [];
for j=1:size(current_data.Y, 2)
    varname = strcat('', ynames{1,j});
    ts = timeseries(current_data.Y(j).Data, current_data.X(1).Data, 'Name', varname);
    dsp_ts = [dsp_ts; ts]; % not efficient
end


dsp_tsc = tscollection(num2cell(dsp_ts));
dsp_tsc.Name = filenames{i};

dsp_tscs{i} = dsp_tsc;

dsp_tscs{i}
end

for i=1:length(filenames)
   fprintf('-- Saved data from %s in tscollection dsp_tscs{%d}\n', filenames{i}, i); 
end

clear ts dsp_ts dsp_tsc current_data dspace_files filenames i j paths ynames varname ans;

% dspace mat export to tscollection that can be used with 'From

% Workspace' in Simulink

[filenames, paths] = uigetfile('*.mat', 'Select dSPACE mat files', 'MultiSelect', 'on');

dspace_files = cellstr(fullfile(paths, filenames));

filenames = cellstr(filenames);

% store all tscollections in a cell array (so multiple files can be loaded at once)

dsp_tscs = {};

for i=1:length(dspace_files)

current_data = importdata(dspace_files{i});

ynames = {current_data.Y.('Name')};

ynames = matlab.lang.makeUniqueStrings(ynames);

dsp_ts = [];

for j=1:size(current_data.Y, 2)

varname = strcat('', ynames{1,j});

ts = timeseries(current_data.Y(j).Data, current_data.X(1).Data, 'Name', varname);

dsp_ts = [dsp_ts; ts]; % not efficient

end

dsp_tsc = tscollection(num2cell(dsp_ts));

dsp_tsc.Name = filenames{i};

dsp_tscs{i} = dsp_tsc;

dsp_tscs{i}

end

for i=1:length(filenames)

fprintf('-- Saved data from %s in tscollection dsp_tscs{%d}\n', filenames{i}, i);

end

clear ts dsp_ts dsp_tsc current_data dspace_files filenames i j paths ynames varname ans;

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Convert dSPACE ControlDesk measurements to MATLAB/Simulink timeseries (updated)

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