- 3D4MEDICAL COMPLETE ANATOMY MULTIPE DEVICES HOW TO
- 3D4MEDICAL COMPLETE ANATOMY MULTIPE DEVICES WINDOWS
The attached three-phase model of a power system capacitor bank is where I am simulating a shorting of a capacitor bank layer followed by a fuse operation (opening a capacitor element). Output characteristics of low-pass filter obtained by AC frequency sweep. Currently I have the switch occurring at 8 seconds which is where it hangs. I go through an extensive process of trying to make it work which is mostly superstition: Very occasionally I can fiddle the parameters to have the simulation run, however often it doesn't. The 0.1 ohm resistors are to make it look "real world" and deal with potential "charge" sloshing at very high current values during transient events (which may not help convergence).R12-R19 (1e12 ohms) are parasitic elements to help "convergence".The main problem is the shorting and fuse operation (S4 and S3) tend to mean the transient simulation just hangs.Occasionally by changing the switch resistance when on and the timestep I manage to get a combination which works. Qucs supports a growing list of analog and digital components as well as SPICE sub-circuits. I've spent several days learning how sensitive the transient simulation is to small changes and I'm getting to a stage where without a process to "help" convergence I may need to give up. It is intended to be much simpler to use and handle than other. The last step is to run the optimization, i.e. I'd appreciate any help or advice on steps to try when I have these problems to try and get the simulation going again. Once finished, which takes a few seconds on a modern computer, the best simulation results is shown in the graphical waveform viewer. I've attached the circuit diagram (renamed form sch to txt): I don't think there is much in the way of qucsator debug out put at the moment as far as I'm aware.
3D4MEDICAL COMPLETE ANATOMY MULTIPE DEVICES WINDOWS
I have been switching between two Linux machines and two Windows machines and wondering whether I am going slightly crazy when what works on one does not work on the other! Ideally I'd also like to reduce the timestep to between 500 us and 125 us but I cannot get the transient simulation to run under these conditions.
3D4MEDICAL COMPLETE ANATOMY MULTIPE DEVICES HOW TO
I'm not sure if ngspice allows the two switches I have in the model - it removes them when I change the simulator engine and I don't know much about spice and could not figure how to put them you. Sometime I have better luck when the switch is set to abrupt instead of spline but not in this case. I try to alternate the switch time versus the simulation step from time to time which sometimes helps (as long as it is not too small). This java applet is an electronic circuit simulator. I did try qucsator.sh after sorting out some compilation issues. Unfortunately this hangs for me and I'm not sure how to progress - a paste from the simulation screen is here: You can close the switch to get current moving in the inductor, and then open the switch to see the. Print( 'Reading from file: ' + str( input_file)) read_csv( input_file, sep = '\s+', header = 0) #!/usr/bin/env python3 import sys from pathlib import Path import pandas as pd SPACE = ' ' input_file = Path( sys. join( dep_variables))ĭef write_values( dataset, type = 'indep', name = 'time', datasetname = '#Time'):įor r in dataset. Print( 'Writing to: ' + str( output_file))į.
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