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livelink with simulink
Posted Dec 2, 2022, 4:46 a.m. EST LiveLink for Simulink Version 5.6 2 Replies
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I want to control the AC voltage in the COMSOL model circuit through simulink, specifically through the frequency value fed back to each stage. The frequency changes once every cycle, and the specific change depends on the feedback. I define a variable f, given the initial value, however, an error is reported during the apply process in cosimulation, prompting: the number of elements cannot be changed. Please use [] as one of the size inputs to automatically calculate the appropriate size for that dimension. I don't know how to solve it, can someone with good intentions analyze it? I will be very grateful for your help
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Hi,
the error message indicates that the size of the input of the COMSOL cosimulation block is changing during the simulation, make sure the input size remain constant along the simulation.
If this does not help, please send your file to the support (support@comsol.com) so that we provide an appropriate solution to your problem.
Best regards,
Rémi Magnard
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The frequency of the AC voltage in the circuit module wants to be controlled through cosimulation, where the frequency is a scalar and also a real number, so why is there a problem?