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Hi everyone, im richard and I was tasked a multisim project, but I ran into an issue.
The circuit works but there is a constant decrease in voltage and current. the circuit consists of dc power sources, inductor, resistors, comparators and an amplifier. also there is a logic gate and a DC_MACHINE_PERMANENT_MAGNET.
after some additional testing we believe it is the dc machine permanent magnet causing the decrease in current, and an increase the voltage on him. I am positive it can be avoidable somehow but we just don't know how. We know for example the shaft friction can slow the leakage down. We previously saw in someone elses simulaion that it is stable in its dc operating point(steady state). we added some pictures and the multisim file.
I think that there might be some of the parameters value on the DC Machine Permanent Magnent yhsy can be causing this to your schematic. I made some changes to the Armature resistance and was able to stop the current/ voltage values from moving, however you would have to consider your application setup and see what the real conditions for the component should be. Here on this link you can find the main descriptions for the paramenters and values avaiable on the component properties window.
