sFunction for matrix calculation of matrices with different ranges

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Andreas 2013-9-26

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https://ww2.mathworks.cn/matlabcentral/answers/88344-sfunction-for-matrix-calculation-of-matrices-with-different-ranges

评论： Andreas 2013-9-27

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Hey all!

I am looking for a Level 2 MATLAB sFunction for Simulink which can handle matrices with different ranges.

What I tried is:

function anregung(block)
% Level-2 MATLAB file S-Function for times two demo.
%   Copyright 1990-2009 The MathWorks, Inc.
%   $Revision: 1.1.6.2 $ 
    setup(block);
%endfunction
function setup(block)
    %%Register number of input and output ports
    block.NumInputPorts  = 3;
    block.NumOutputPorts = 1;
    %%Setup functional port properties to dynamically
    %%inherited.
    block.SetPreCompInpPortInfoToDynamic;
    block.SetPreCompOutPortInfoToDynamic;
    block.InputPort(1).DirectFeedthrough = true;
    block.InputPort(2).DirectFeedthrough = true; 
    block.InputPort(3).DirectFeedthrough = true;
    %%Set up the inport data-type properties.
    block.InputPort(1).DatatypeID  = -1;
    block.InputPort(1).Complexity  = 'Real';
    %%Set up the outport data-type properties.
    block.OutputPort(1).DatatypeID  = -1;
    block.OutputPort(1).Complexity  = 'Real';
    %%Set block sample time to inherited
    block.SampleTimes = [0 0];
    %%Set the block simStateCompliance to default (i.e., same as a built-in block)
    block.SimStateCompliance = 'DefaultSimState';
    %%Run accelerator on TLC - Eine TLC Datei wird im Falle von 'true' erzeugt
    block.SetAccelRunOnTLC(true);
    %%Set the number of Parameters
    block.NumDialogPrms = 3;
    %%Register methods
    block.RegBlockMethod('Outputs', @Output);
    block.RegBlockMethod('SetInputPortDimensions',  @SetInpPortDims);
    block.RegBlockMethod('SetOutputPortDimensions', @SetOutPortDims);
%endfunction
function Output(block)
M_kappa = block.DialogPrm(1).Data;
R_kappa = block.DialogPrm(2).Data;
h_delta = block.DialogPrm(3).Data;
block.OutputPort(1).Data = (M_kappa\R_kappa)*h_delta;
%endfunction

M_kappa is a 3x3 Matrix, R_kappa 3x2 and h_delta is a 2x1 vector. As you can see, I'd just like to devide the matrices and multiplicate them with the vector.

The point is, I get three errors:

Item one 'Error in port widths or dimensions. Output port 1 of 'modele/Constant1' is a [3x2] matrix.'
Item two 'Error evaluating registered method 'SetInputPortDimensions' of MATLAB S-Function 'anregung' in 'model/Level-2 MATLAB S-Function'. The dimensions of output port 1 of 'model/Level-2 MATLAB S-Function' cannot be changed from [3x3] to [3x2]. The following is the MATLAB call stack (file names and line numbers) that produced this error: ['C:...path\Simulink\anregung.m'] [92]'
Item three 'The dimensions of output port 1 of 'model/Level-2 MATLAB S-Function' cannot be changed from [3x3] to [3x2].'

Anybody an idea how to define the input dimensions properly?

Many thanks in advance!

Greeeetz Drej

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Andreas 2013-9-27

编辑：Andreas 2013-9-27

在 MATLAB Online 中打开

In case I delete the function SetInpPortDims(s,idx,di) and set the

block.InputPort('every port').DirectFeedthrough

to true, I get the error, that the outport of the 'Constant'-R_kappa, which is a [3x2] matrix does not correspond to the input port 2 of the sfunction, because it is a [3x3] matrix.

to clarify ma problem I added an image of my simple model and in addition the entire code.

function anregung(block)
% Level-2 MATLAB file S-Function for times two demo.
%   Copyright 1990-2009 The MathWorks, Inc.
%   $Revision: 1.1.6.2 $ 
setup(block);
%endfunction
function setup(block)
%%Register number of input and output ports
block.NumInputPorts  = 3;
block.NumOutputPorts = 1;
%%Setup functional port properties to dynamically
%%inherited.
block.SetPreCompInpPortInfoToDynamic;
block.SetPreCompOutPortInfoToDynamic;
block.InputPort(1).DirectFeedthrough = true;
block.InputPort(2).DirectFeedthrough = true; 
block.InputPort(3).DirectFeedthrough = true;
%%Set block sample time to inherited
block.SampleTimes = [0 0];
%%Set the block simStateCompliance to default (i.e., same as a built-in block)
block.SimStateCompliance = 'DefaultSimState';
%%Run accelerator on TLC - Eine TLC Datei wird im Falle von 'true' erzeugt
block.SetAccelRunOnTLC(true);
%%Set the number of Parameters
block.NumDialogPrms = 3;
%%Register methods
block.RegBlockMethod('PostPropagationSetup',    @DoPostPropSetup);
block.RegBlockMethod('Outputs', @Output);
    function SetInpPortDims(s, port, di)
    % Set dimension mode
    block.InputPort(port).Dimensions = di;
%endfunction
    function Output(block)
    M_kappa = block.DialogPrm(1).Data;
    R_kappa = block.DialogPrm(2).Data;
    h_delta = block.DialogPrm(3).Data;
    block.OutputPort(1).Data = (M_kappa\R_kappa)*h_delta;
%endfunction