Comments on: Continuous Time Integrator http://blogs.mathworks.com/seth/2008/09/07/continuous-time-integrator/ This blog is about Simulink. Mon, 23 Nov 2009 00:57:15 +0000 http://wordpress.org/?v=2.3.1 By: Guy http://blogs.mathworks.com/seth/2008/09/07/continuous-time-integrator/#comment-804 Guy Thu, 16 Jul 2009 23:12:28 +0000 http://blogs.mathworks.com/seth/2008/09/07/continuous-time-integrator/#comment-804 @Marcelo, it is only possible to place ports either left-right or up-down by rotating the block. It is not possible to have ports on the four sides of a block simultaneously. Similarly it is not possible to nudge them a bit up or down. If your license is under maintenance, I suggest contacting The Mathworks technical support, ask for this capability and explain why this is important for you. @Marcelo, it is only possible to place ports either left-right or up-down by rotating the block. It is not possible to have ports on the four sides of a block simultaneously. Similarly it is not possible to nudge them a bit up or down.

If your license is under maintenance, I suggest contacting The Mathworks technical support, ask for this capability and explain why this is important for you.

]]> By: Marcelo Tomim http://blogs.mathworks.com/seth/2008/09/07/continuous-time-integrator/#comment-803 Marcelo Tomim Thu, 16 Jul 2009 19:22:27 +0000 http://blogs.mathworks.com/seth/2008/09/07/continuous-time-integrator/#comment-803 Hello Seth, Thank you very much for the very informative article. However, I have another question I faced myself with when programming a simulink block. How can I place a port (input or output) at the bottom or at the top of the simulink block, or even nudge them a bit up or down? I look forward to hearing from you. Cheers, Marcelo Hello Seth,

Thank you very much for the very informative article.
However, I have another question I faced myself with when programming a simulink block. How can I place a port (input or output) at the bottom or at the top of the simulink block, or even nudge them a bit up or down?

I look forward to hearing from you.

Cheers,
Marcelo

]]> By: Seth http://blogs.mathworks.com/seth/2008/09/07/continuous-time-integrator/#comment-767 Seth Tue, 02 Jun 2009 18:33:53 +0000 http://blogs.mathworks.com/seth/2008/09/07/continuous-time-integrator/#comment-767 @Dziki - Those initial conditions are "IC" blocks from the Signal Attributes library. Good luck. @Dziki - Those initial conditions are “IC” blocks from the Signal Attributes library. Good luck.

]]> By: dziki http://blogs.mathworks.com/seth/2008/09/07/continuous-time-integrator/#comment-766 dziki Tue, 02 Jun 2009 10:31:39 +0000 http://blogs.mathworks.com/seth/2008/09/07/continuous-time-integrator/#comment-766 Hi How can I made blocks "initial volocity" and "initial position" in matlab simulink R14? I can not find such block in simulink liblary! Teanks You Dziki Hi

How can I made blocks “initial volocity” and “initial position” in matlab simulink R14?
I can not find such block in simulink liblary!

Teanks You
Dziki

]]> By: KMR http://blogs.mathworks.com/seth/2008/09/07/continuous-time-integrator/#comment-561 KMR Mon, 15 Sep 2008 06:00:59 +0000 http://blogs.mathworks.com/seth/2008/09/07/continuous-time-integrator/#comment-561 The initial condition block may not be the best thing to use if you need to generate code from your diagram and have the initial condition be specifiable external to the generated code (e.g., your continuous model is the truth model for a hardware-in-the-loop simulation), or if your diagram is in a referenced model. I typically use parameters with scope ExternGlobal for this. The drawback is that, with lots of integrators, the workspace gets cluttered up. Maybe eventually the Mathworks will support Matlab structure elements as fully tunable parameters in generated code and model references without resorting to the C-API. The initial condition block may not be the best thing to use if you need to generate code from your diagram and have the initial condition be specifiable external to the generated code (e.g., your continuous model is the truth model for a hardware-in-the-loop simulation), or if your diagram is in a referenced model. I typically use parameters with scope ExternGlobal for this. The drawback is that, with lots of integrators, the workspace gets cluttered up. Maybe eventually the Mathworks will support Matlab structure elements as fully tunable parameters in generated code and model references without resorting to the C-API.

]]> By: Amin http://blogs.mathworks.com/seth/2008/09/07/continuous-time-integrator/#comment-536 Amin Sun, 07 Sep 2008 16:49:08 +0000 http://blogs.mathworks.com/seth/2008/09/07/continuous-time-integrator/#comment-536 Hi Seth! Is it necessary to rest the position integral in the bouncing ball demo? I get same result without reset the integral and set the internal initial condition to 10. Hi Seth!
Is it necessary to rest the position integral in the bouncing ball demo?
I get same result without reset the integral and set the internal initial condition to 10.

]]>