User input in a struct

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

[Dyuman Joshi]

Use the variable name in the call to struct() i.e. without the apostrophes.

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'		);             

[JoeTeg]

Thank you :)

[Walter Roberson]

See also menu

Answer 1

[Aquatris]

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".

[JoeTeg]

thanks a lot