Application Support Engineer for MathWorks. I like to write about Simulink and other MathWorks tools used in Model-Based Design at http://blogs.mathworks.com/simulink

Professional Interests: robotics, system modeling, Simulink

Answered

Is there any way to use a block that uses absolute time (e.g., Discrete-Time Integrator) in a referenced model executed by a function-call subsystem?

If you know what sample time at which the Discrete-Time Integrator will be triggered, you can use it in Accumulator mode. This w...

Is there any way to use a block that uses absolute time (e.g., Discrete-Time Integrator) in a referenced model executed by a function-call subsystem?

If you know what sample time at which the Discrete-Time Integrator will be triggered, you can use it in Accumulator mode. This w...

10 hours ago | 0

Submitted

Example Driver blocks for Simulink Hardware Support Packages

Example Driver blocks for LEGO Mindstorm NXT and Arduino support packages

3 months ago | 10 downloads |

Submitted

Double suspended mass-spring-damper system

2 suspended masses linked by springs and dampers demonstrating basic SimMechanics features.

3 months ago | 13 downloads |

Submitted

SimMechanics™ rover

This SimMechanics™ model implements a 4 wheels rover with suspension and a robotic arm.

3 months ago | 12 downloads |

Submitted

Changing the color of a block while the simulation runs

Did you ever wanted to see the color of a block changing while a simulation is running?

3 months ago | 1 downloads |

Submitted

Double Pendulum

This model implements a double pendulum both in SimMechanics™ and using basic Simulink® blocks.

3 months ago | 13 downloads |

Submitted

Minor Time Step Logging

Demonstration showing how to log data computed by the Simulink® solver at minor time steps.

3 months ago | 4 downloads |

Submitted

Simulink® Real Time Execution

C-MEX S-function that reduces the execution speed of a model close to real time

3 months ago | 99 downloads |

Submitted

Synchronizing metronomes

The 5 pendulums, in a vectorized approach

3 months ago | 1 downloads |

Submitted

Simulation of a one-legged hopping robot

Simulation of a one-legged hopping robot

3 months ago | 16 downloads |

Solved

Produce a sine wave

Produce a sine wave with amplitude 3: <<http://blogs.mathworks.com/images/seth/cody/sine-eqn.png>>

1 year ago

Solved

Produce a cosine wave

Produce the following signal: <<http://blogs.mathworks.com/images/seth/cody/cosine-eqn.png>>

1 year ago

Solved

Connect blocks in a model

Connect the blocks in the model to produce the following signal: <<http://blogs.mathworks.com/images/seth/cody/connect-blocks...

1 year ago

Answered

Transform Sensor - Problem with Velocity

One possible explanation is that signals input to S->PS blocks are discrete and filtering is disabled in the S->PS block. Try...

Transform Sensor - Problem with Velocity

One possible explanation is that signals input to S->PS blocks are discrete and filtering is disabled in the S->PS block. Try...

1 year ago | 0

Answered

generate text in simulink

There are 2 possibilities here: 1 - It is possible to define enumerated types in Simulink. With those, you can define for exa...

generate text in simulink

There are 2 possibilities here: 1 - It is possible to define enumerated types in Simulink. With those, you can define for exa...

2 years ago | 0

Answered

Simulink block from workspace

I recommend going through the "Importing Signal Data in Simulink" section of the doc: http://www.mathworks.com/help/simulink/...

Simulink block from workspace

I recommend going through the "Importing Signal Data in Simulink" section of the doc: http://www.mathworks.com/help/simulink/...

2 years ago | 0

Answered

Second Generation Sim Mechanics Motion Actuation

Sicne you don't provide the error, it is difficult to diagnose... The "Joint Actuation" doc page explains what you need to actua...

Second Generation Sim Mechanics Motion Actuation

Sicne you don't provide the error, it is difficult to diagnose... The "Joint Actuation" doc page explains what you need to actua...

2 years ago | 0

Answered

Simulink - Excel

The Signal Builder block allows you to import a signal directly from Excel: http://www.mathworks.com/help/simulink/slref/sign...

Simulink - Excel

The Signal Builder block allows you to import a signal directly from Excel: http://www.mathworks.com/help/simulink/slref/sign...

2 years ago | 1

Answered

Simulink : Slow editing of Data Store Memory with Matlab R2011B - how to make it faster ?

I am not 100% sure this will fix it, but try those bug reports: http://www.mathworks.com/support/bugreports/874385 http://...

Simulink : Slow editing of Data Store Memory with Matlab R2011B - how to make it faster ?

I am not 100% sure this will fix it, but try those bug reports: http://www.mathworks.com/support/bugreports/874385 http://...

2 years ago | 0

Answered

(Simulink) Triggered Delay Line gone in 2014a. Replacements?

Look at the doc doc page for this block: http://www.mathworks.com/help/dsp/ref/triggereddelaylineobsolete.html The first t...

(Simulink) Triggered Delay Line gone in 2014a. Replacements?

Look at the doc doc page for this block: http://www.mathworks.com/help/dsp/ref/triggereddelaylineobsolete.html The first t...

2 years ago | 0

Answered

A ramp block going backwards?

You are probably using a variable step solver. Variable step solvers often need to take steps backward to ensure they respect th...

A ramp block going backwards?

You are probably using a variable step solver. Variable step solvers often need to take steps backward to ensure they respect th...

2 years ago | 0

| accepted

Answered

Using mathematica code in Simulink

Almost... look at this link: http://blogs.mathworks.com/seth/2013/10/10/from-symbolic-to-simulink

Using mathematica code in Simulink

Almost... look at this link: http://blogs.mathworks.com/seth/2013/10/10/from-symbolic-to-simulink

2 years ago | 0

Answered

Is there any limitation in simscape in adding two types of sensors to a circuit?

Torque sensor allows zero motion, it needs to be connected in series. It is like a real physical torque sensor.

Is there any limitation in simscape in adding two types of sensors to a circuit?

Torque sensor allows zero motion, it needs to be connected in series. It is like a real physical torque sensor.

2 years ago | 0

| accepted

Answered

Sources for learning the intricacies of Simulink?

I try my best to describe important Simulink intricacies here: http://blogs.mathworks.com/seth/ Specific to s-function, he...

Sources for learning the intricacies of Simulink?

I try my best to describe important Simulink intricacies here: http://blogs.mathworks.com/seth/ Specific to s-function, he...

3 years ago | 0

Answered

Terminology 101: XPC , Real-Time, ERT, SIL, PIL, External Mode

I like this page for HIL: http://www.mathworks.com/discovery/real-time-testing.html This section of the doc will help for ...

Terminology 101: XPC , Real-Time, ERT, SIL, PIL, External Mode

I like this page for HIL: http://www.mathworks.com/discovery/real-time-testing.html This section of the doc will help for ...

3 years ago | 0

Answered

Is there a possible way to include enumeration in Signal builder function to define inputs?

Not possible... please contact support to explain your use case so it can be considered in future releases. For now, I would ...

Is there a possible way to include enumeration in Signal builder function to define inputs?

Not possible... please contact support to explain your use case so it can be considered in future releases. For now, I would ...

3 years ago | 0

| accepted

Answered

Slow down Simulink to synchronize it with external session (JADE)

It is not clear how you interface with the external tool, but it looks lik an S-function is the way to go. In an S-Function (...

Slow down Simulink to synchronize it with external session (JADE)

It is not clear how you interface with the external tool, but it looks lik an S-function is the way to go. In an S-Function (...

3 years ago | 1

| accepted

Answered

How to get sample time of the model through scrip?

Simulink.BlockDiagram.getSampleTimes http://www.mathworks.com/help/simulink/slref/simulink.blockdiagram.getsampletimes.html

How to get sample time of the model through scrip?

Simulink.BlockDiagram.getSampleTimes http://www.mathworks.com/help/simulink/slref/simulink.blockdiagram.getsampletimes.html

3 years ago | 0

Answered

Non-zero start time in Rapid Simulation Target

I will not go into details... with RSim target you have an option to choose a solver. See this link to see how to configure this...

Non-zero start time in Rapid Simulation Target

I will not go into details... with RSim target you have an option to choose a solver. See this link to see how to configure this...

3 years ago | 0