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Stephen


UC San Diego

Active since 2011

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Answered
Debuging continuous states in a discrete simulation
ode45 worked -- thanks.

11 years ago | 0

Question


Simulation freezes
I'm not simulating a large model, but am using Apple Lion. Any thoughts why I often have to force start Matlab and restart.

11 years ago | 1 answer | 0

1

answer

Question


Debuging continuous states in a discrete simulation
My simulation fails because The "VariableStepDiscrete" solver cannot be used to simulate block diagram 'Model_Name because it c...

11 years ago | 2 answers | 0

2

answers

Answered
Get simulation time in a Simulink model
Another method is to set the sample time to one second in the subsystem paramaters dialog for the MATLAB Fnc subsystem block.

11 years ago | 1

Question


Get simulation time in a Simulink model
How do I get the simulation time for a Simulink model? I have a Simulink model that includes a MATLAB fnc block. But I want ...

11 years ago | 3 answers | 0

3

answers

Question


Mac windows don't are different from Windows windows
How do I get the same window features on a Mac that I get on a Windows box. For example, I would like to see the status field...

11 years ago | 1 answer | 0

1

answer

Answered
Simple fnc model has error message about || and && operators
Thanks, Kaustubha. I tried your suggestion (dbstop if all error) and got the following error message: Error using ==> g...

11 years ago | 0

Question


Simple fnc model has error message about || and && operators
I get the following error message when I update a model "Operands to the '||' and && operators must be convertible to logical...

11 years ago | 2 answers | 0

2

answers

Answered
Sample time setting for high frequency systems
Thanks, Should the sample time for all elements in the system be set to the 0.5 usec (the number in the above post) or just t...

11 years ago | 0

Question


Sample time setting for high frequency systems
What sample time should I use when simulating a system operating at 100 kHz? It seems to me that the typical 0.2 seconds woul...

11 years ago | 2 answers | 0

2

answers

Answered
MATLAB fnc to control PWM generator
I got it working... it was a scale problem. Instead of duty cycle = 0 to 1, my MATLAB fnc was outputtng duty cycle = 0 to 100....

11 years ago | 0

Question


MATLAB fnc to control PWM generator
How can I use a duty cycle result from a MATLAB fnc to control the duty cycle of a PWM generator, using Simulink.

11 years ago | 3 answers | 0

3

answers

Answered
Check for missing object in workspace
Thanks, but the exists function returns an error if the object does not exist. The help documentation says it should return a z...

11 years ago | 0

Question


Check for missing object in workspace
In a script, how do I check to see whether an object (array) exists before I try to operate on it. Something like: if object...

11 years ago | 2 answers | 0

2

answers

Answered
Subsystem using SimScape components
Thanks, I will not use a For Each Subsystem. I was trying to automate the running of multiple simulations as one parameter is...

11 years ago | 0

Question


Subsystem using SimScape components
I am running a For Each Subsystem It uses Simscape components. I get the error msg saying the EXEC_BBLOCK has a discrete sam...

11 years ago | 2 answers | 0

2

answers

Question


SS_OPTION_ALLOW_PORT_SAMPLE_TIME_IN_TRIGSS
I'm using a For Each Subsystem and when I run the simulator it highlights a Simulink to Physical System Converter and reports th...

11 years ago | 0 answers | 0

0

answers

Answered
Populating a 3D lookup table
Thanks Richard, I will watch your webinar

11 years ago | 0

Answered
Populating a 3D lookup table
I decided just to create a function. I used SFTools to curve fit the data and SFTool was able to provide a function that fitted...

11 years ago | 0

Answered
Populating a 3D lookup table
Thanks. I'm sure your suggestion would work with a Matlab script, but I'm trying to use a Simulink lookup table.

11 years ago | 0

Question


Populating a 3D lookup table
I have a simple 3x512 array (x,y,z) in an ascii table file that is located in a directory. I want to create Simulink lookup t...

11 years ago | 5 answers | 0

5

answers

Answered
XY graph don't plot
You were right, Arnaud. I played around with the different settings of the X and Y axis scale and it finally worked. I was n...

11 years ago | 0

Answered
XY graph don't plot
Thanks, But I did set the min and max values for the X and y axis, to agree with the min and max vlaues I set for the scope t...

11 years ago | 0

Question


XY graph don't plot
I have two signals. They are connected to a scope and XY graph in parallel. They display on the scope but do not display on th...

11 years ago | 3 answers | 0

3

answers

Answered
Add model to another model
I found the first approach mentioned in Rick's email in the demo "Creating Libraries" Thanks, Rick

11 years ago | 0

Question


Add model to another model
I guess this is the inverse of masking. I created a model file. I see this model in the model explorer. How do I add that mod...

11 years ago | 2 answers | 0

2

answers

Answered
Connecting simElectronic blocks -- get red dotted line
Thanks Kaustubha. However, the "Interfacing the Electrical Circuit with Other Simulink Blocks" section (that you referenced i...

11 years ago | 0

Question


Connecting simElectronic blocks -- get red dotted line
Let me say up front - I'm a newbie. When I connect many components in my circuit (e.g. resistor), instead of a solid black li...

11 years ago | 6 answers | 0

6

answers