QUESTION:

Do you have an example illustrating the procedure for performing a 'small signal' frequency response analysis of a hard disk drive voice coil motor (HDD VCM)? We wish to be able to create a bode plot of the transfer function using coil current as input, read-write head displacement as output.



ANSWER:

Please review the attached presentation and use the working files discussed on the second to last slide to automatically recreate the model and coupled field solution. It's fully parameterized and the model/design is very simple/hypothetical to illustrate the solution procedure.

I had problems getting a bode plot in ANSYS (I will investigate the reasons for this later), but the data that one would use to create one outside ANSYS is certainly available from the structural results file.


QUESTION:

Do you have an example illustrating the procedure for performing a `small signal` frequency response analysis of a hard disk drive voice coil motor (HDD VCM)? We wish to be able to create a bode plot of the transfer function using coil current as input, read-write head displacement as output.



ANSWER:

Please review the attached presentation and use the working files discussed on the second to last slide to automatically recreate the model and coupled field solution. It`s fully parameterized and the model/design is very simple/hypothetical to illustrate the solution procedure.

I had problems getting a bode plot in ANSYS (I will investigate the reasons for this later), but the data that one would use to create one outside ANSYS is certainly available from the structural results file.





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