Answered
Doubt regrading input as the Acceleration, Velocity and Position to get the desired position i.e. Angle for E.Motor
No sure I understand. Typically, you should have transfer function representing the dynamics of the motor (Input = Volt, Outp...
Doubt regrading input as the Acceleration, Velocity and Position to get the desired position i.e. Angle for E.Motor
No sure I understand. Typically, you should have transfer function representing the dynamics of the motor (Input = Volt, Outp...
13 years ago | 2
| accepted
Published
Creating Your Own Block With Continuous States (MATLAB S-Function)
In a previous post, I showed an example of a MATLAB S-Function with a discrete state This week, we continue in the same...
13 years ago
Answered
Modelling of Robot contact with object
You have 2 options: 1. You can model only the arm (no wall in SimMechanics). Use a Body sensor to get the pose of the EE in S...
Modelling of Robot contact with object
You have 2 options: 1. You can model only the arm (no wall in SimMechanics). Use a Body sensor to get the pose of the EE in S...
13 years ago | 1
| accepted
Published
Simulink Student Challenge – Targeting Hardware: Win up to $500!
One of my favorite feature in R2012a is the Simulink Support for Target Hardware. Personally, I use it for many purposes....
13 years ago
Answered
Writing a TLC file
I would start with the documentation page "Inlining S-Functions with TLC": http://www.mathworks.com/help/toolbox/rtw/tlc/bqlc...
Writing a TLC file
I would start with the documentation page "Inlining S-Functions with TLC": http://www.mathworks.com/help/toolbox/rtw/tlc/bqlc...
13 years ago | 0
| accepted
Published
Writing your own block with discrete states (MATLAB S-Function)
A few weeks ago, I noticed the following question on MATLAB Answers by K E: What are continuous and discrete states in...
13 years ago
Answered
Loading a Simhydraulic Motor
The doc statement means that the Hydraulic motor itself does not include loads such mass spring and damping. This means that ...
Loading a Simhydraulic Motor
The doc statement means that the Hydraulic motor itself does not include loads such mass spring and damping. This means that ...
13 years ago | 1
| accepted
Answered
Single-acting hydraulic cylinder for modeling a fuel regulator system in Simulink
It is very hard to determine a solution with those details. My feeling is that the problem is not with the solver, but with h...
Single-acting hydraulic cylinder for modeling a fuel regulator system in Simulink
It is very hard to determine a solution with those details. My feeling is that the problem is not with the solver, but with h...
13 years ago | 1
Answered
Pneumatic gas transportation system
What you mention is surprising. If you connect in series a reference, pressure source, an orifice (or pipe) and a reference, the...
Pneumatic gas transportation system
What you mention is surprising. If you connect in series a reference, pressure source, an orifice (or pipe) and a reference, the...
13 years ago | 0
Published
THE Most Useful Command for Debugging Variable Step Solver Performance
Today I want to share a trick I often use to determine if a variable step simulation runs as fast as it...
13 years ago
Answered
Tool for showing difference b/w two simulink model
Simulink Report Generator offers this functionality: http://www.mathworks.com/products/SL_reportgenerator/ See the documen...
Tool for showing difference b/w two simulink model
Simulink Report Generator offers this functionality: http://www.mathworks.com/products/SL_reportgenerator/ See the documen...
13 years ago | 3
Answered
Running simmechanics in discerete mode
SimMechanics requires a continuous solver. The solver can be variable or fixed step. The fixed-step solver closest to discret...
Running simmechanics in discerete mode
SimMechanics requires a continuous solver. The solver can be variable or fixed step. The fixed-step solver closest to discret...
13 years ago | 2
| accepted
Answered
Simulink - Change continuous state value at a given time point
If you want to generate a "jump" in your continuous state, you must reset the block. This can be done in many ways. For example ...
Simulink - Change continuous state value at a given time point
If you want to generate a "jump" in your continuous state, you must reset the block. This can be done in many ways. For example ...
13 years ago | 0
| accepted
Answered
Time values must be monotonically increasing error
Ensure you re 100% sure the value are increasing, for example by validating that each element of "diff(t)" is positive. If th...
Time values must be monotonically increasing error
Ensure you re 100% sure the value are increasing, for example by validating that each element of "diff(t)" is positive. If th...
13 years ago | 1
| accepted
Answered
Goto/From connections cannot cross nonvirtual subsystem boundaries. The only exception is when a goto is connected to a state output port
The error message is clear... don't place GoTo block inside the triggered subsystem and corresponding From block outside. Use...
Goto/From connections cannot cross nonvirtual subsystem boundaries. The only exception is when a goto is connected to a state output port
The error message is clear... don't place GoTo block inside the triggered subsystem and corresponding From block outside. Use...
13 years ago | 3
Published
How to make your own blocks with code! (Introduction to S-Functions)
I have to admit... before joining MathWorks, I was afraid of S-Functions. Now this makes me laugh, because I know that...
13 years ago
Answered
stiffness problem / Trying to use ode1 (Euler) in Simulink
I would verify if the robot starts in a singular configuration. If you invert D, I guess this is because D is the manipulator...
stiffness problem / Trying to use ode1 (Euler) in Simulink
I would verify if the robot starts in a singular configuration. If you invert D, I guess this is because D is the manipulator...
13 years ago | 0
Answered
Save a value to variable (Simulink)
Use the Selector block: http://www.mathworks.com/help/toolbox/simulink/slref/selector.html You will be able to select rows...
Save a value to variable (Simulink)
Use the Selector block: http://www.mathworks.com/help/toolbox/simulink/slref/selector.html You will be able to select rows...
13 years ago | 1
| accepted
Answered
How can I return from simulink to matlab thread?
SIM is blocking, it will return to your script only when the simulation terminates. If you want to start a simulation from co...
How can I return from simulink to matlab thread?
SIM is blocking, it will return to your script only when the simulation terminates. If you want to start a simulation from co...
14 years ago | 1
| accepted
Answered
Hydraulic Gas-Charged Accumulator
The only thing I can guess based on your description is that you have something connected wrong. Did you look at the demo "sh...
Hydraulic Gas-Charged Accumulator
The only thing I can guess based on your description is that you have something connected wrong. Did you look at the demo "sh...
14 years ago | 1
Answered
State Space Representation of a Custom Simscape Component
Interesting... I never tried combining states with different units into a vector. Since your example is a simple linear sprin...
State Space Representation of a Custom Simscape Component
Interesting... I never tried combining states with different units into a vector. Since your example is a simple linear sprin...
14 years ago | 0
Published
How to Load and Save Bus Signal Data
In R2012a, the From Workspace, To Workspace, From File and To File blocks all support bus signals. This is an often...
14 years ago
Answered
Using if/action blocks within an algebraic loop?
As you figured out, the algebraic loop solver uses a gradient descent method to solve the loop. The If/Else construct causes a d...
Using if/action blocks within an algebraic loop?
As you figured out, the algebraic loop solver uses a gradient descent method to solve the loop. The If/Else construct causes a d...
14 years ago | 0
| accepted
Published
Signal Hierarchy Viewer
If you are like me and often need to understand and edit new Simulink models, you probably already looked at a bus signal...
14 years ago
Answered
Error in port widths or dimensions
I don't know where the 4 comes from in your error message, but your B and D matrices have 2 columns, so your system should have ...
Error in port widths or dimensions
I don't know where the 4 comes from in your error message, but your B and D matrices have 2 columns, so your system should have ...
14 years ago | 0
Answered
Maximum step size or automatic timing
Hi Dirk, This is very good question. There are 2 ways in Simulink to force a variable-time step solver to take a step at a...
Maximum step size or automatic timing
Hi Dirk, This is very good question. There are 2 ways in Simulink to force a variable-time step solver to take a step at a...
14 years ago | 1
| accepted
Answered
SIMSCAPE SINEWAVE DELAYED IN SCOPE
I think this is just a scope problem On the scope, click on the "Parameters" button. Go to the History tab and uncheck the "L...
SIMSCAPE SINEWAVE DELAYED IN SCOPE
I think this is just a scope problem On the scope, click on the "Parameters" button. Go to the History tab and uncheck the "L...
14 years ago | 0
| accepted
Answered
Difference b/w virtual and non virtual bus?
A virtual bus is just a visual representation in the Simulink editor. It makes your model look nicer and easier to manage when y...
Difference b/w virtual and non virtual bus?
A virtual bus is just a visual representation in the Simulink editor. It makes your model look nicer and easier to manage when y...
14 years ago | 9
Published
Automatic Refresh of Links and Model Blocks
The first time I tried editing models componentized with library blocks and referenced models in R2012a, I noticed something...
14 years ago
Answered
Why am I observing zero flow rate in my SimHydraulics model ?
You say: "The fuel pump is wired in series to the two sensor" Flow sensor should be connected in series. Pressure sensor must...
Why am I observing zero flow rate in my SimHydraulics model ?
You say: "The fuel pump is wired in series to the two sensor" Flow sensor should be connected in series. Pressure sensor must...
14 years ago | 0
| accepted