User input in a struct

Question

Etienne 2024-2-16

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2082838-user-input-in-a-struct

移动：Dyuman Joshi 2024-2-19

Hello want to implment an Input request befor the following struct so that i will not have to manualy change the maschineType in the struct

motor.winding = struct(...
    'windingType',             'distributed' 	,...      % 'concetrated' , 'distrubuted'
    'machineType',             'PMSM',...    %'IDM' , PMSM'
    'PolePair',                4 	,...              
    'Number of slots',         60	, ...        
    'fieldModel',              '2D'		);             

The solution could look like that:

MotorType = input('Enter IDM for induction motor and PMSM for pemanent magnet synchronous motor:  ', 's')
motor.winding = struct(...
    'windingType',             'distributed' 	,...      % 'concetrated' , 'distrubuted'
    'machineType',             'MotorType',...    %'IDM' , PMSM'
    'PolePair',                4 	,...              
    'Number of slots',         60	, ...        
       'fieldModel',              '2D'		);             

but i have some mistake. How can i do that properly ?

thank you

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Etienne 2024-2-16

移动：Dyuman Joshi 2024-2-17

Thank you :)

Walter Roberson 2024-2-16

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Answer 1

Aquatris 2024-2-16

1
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2082838-user-input-in-a-struct#answer_1410368

编辑：Aquatris 2024-2-16

在 MATLAB Online 中打开

You cannot have space in structure field name. And also as @Dyuman Joshi mentioned you should not use quotes when you assign it.

So instead try this:

MotorType = 'xxx'; % replace this with the input command, I use it to demonstrate here
motor.winding = struct(...
    'windingType',             'distributed' 	,...      % 'concetrated' , 'distrubuted'
    'machineType',             MotorType,...    %'IDM' , PMSM'
    'PolePair',                4 	,...              
    'Numberofslots',         60	, ...        
    'fieldModel',              '2D'		); 
motor.winding
ans = struct with fields:
      windingType: 'distributed'
      machineType: 'xxx'
         PolePair: 4
    Numberofslots: 60
       fieldModel: '2D'

Here is the error

MotorType = 'xxx';
motor.winding = struct(...
    'windingType',             'distributed' 	,...      % 'concetrated' , 'distrubuted'
    'machineType',             MotorType,...    %'IDM' , PMSM'
    'PolePair',                4 	,...              
    'Number of slots',         60	, ...        
    'fieldModel',              '2D'		); 
Error using struct
Invalid field name "Number of slots".