whenever i run the program it gives error. 'Undefined function or variable 'name'.'

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MAYANK GIRI 2016-7-12

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评论： MAYANK GIRI 2016-7-13

在 MATLAB Online 中打开

function [t,v] = selectCycle(name)

load

%selectCycle Select cycle data from a name.

% [t,v] = selectCycle(name) returns the time and velocity signals

% relating to a given cycle.

persistent NedCycles ArtemisCycles WltpCycles EpaCycles;

if isempty(NedCycles)

    NedCycles = load('cycles_nedc.mat');
    ArtemisCycles = load('cycles_artemis.mat');
    WltpCycles = load('cycles_wltp.mat');
    EpaCycles = load('cycles_epa.mat');

end

switch lower(name)

    case 'nedc'
        data = NedCycles.NEDC;
    case 'eudc'
        data = NedCycles.EUDC;
    case 'ece r15'
        data = NedCycles.ECE_R15;
    case 'arturban'
        data = ArtemisCycles.ArtUrban;
    case 'artroad'
        data = ArtemisCycles.ArtRoad;
    case 'artmw130'
        data = ArtemisCycles.ArtMw130;
    case 'artmw150'
        data = ArtemisCycles.ArtMw150;        
    case 'wltp class 3'
        data = WltpCycles.WLTP_class_3;    
    case 'udds'
        data = EpaCycles.UDDS;
    case 'ftp'
        data = EpaCycles.FTP;
    case 'hwfet'
        data = EpaCycles.HWFET;
    otherwise
        error('Cycle not known: %s.', name);

end

t1 = data.Time;

v1 = data.Data;

t = 0:round(max(t1));

v = interp1(t1, v1, t);

t = t(:);

v = v(:)/3.6;

end

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Answer 1

James Tursa 2016-7-12

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Please copy & paste the entire error message, showing the exact line where the problem is. From what you have posted, I would hazard a guess that you called the selectCycle routine without any input argument.

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Answer 2

Image Analyst 2016-7-12

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编辑：Image Analyst 2016-7-12

在 MATLAB Online 中打开

Why does you second line just say load with no filename???

Also you say

switch lower(name)

but you never defined name, so at this point "name" is an undefined variable - it doesn't exist! It appears that name was supposed to be passed in to selectCycle() but you never called it while passing in something via the input argument list. You didn't just click the green run triangle or type F5 did you? Because that won't invent something for name - it will be undefined. You have to call selectCycle() from another function or the command line while passing in some argument for name.

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Image Analyst 2016-7-12

Sorry, no because I don't have Simulink.

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Answer 3

Robert Fennis 2016-7-12

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Do you even know what you are trying to do and what the block is supposed to do? I am getting the impression you are just downloading a random function but I do not get the impression that it actually does what you want it to do. Could you please elaborate on the project a little more.

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Robert Fennis 2016-7-12

Yes I read your previous comment I am not blind. I personally don't like the insisting tone at which you try to order people to help you solve problems you are supposed to solve. At least do the effort of typing a separate message for me since your reply isn't at all a response to my question.

If you want help, reply to my question: What are you trying to do? Most people here are unaware of what driving cycles are so you have to explain what your endgame is here.

MAYANK GIRI 2016-7-13

The drive cycles are the duty cycles of urban transit i.e. it is the data of velocity with respect to time of buses and trucks. I am trying to run a simulation for hydraulic hybrid Powertrain to calculate most efficient driving conditions. I have prepared the model for that, this block is the input for that program. And sorry, if my tone seems insisting. I didn't intend to insist.

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