What is the equation of lead lag block implemented in System Build?

[gasilva]

There is any manual or document that presents the equation for lead lag block implemented in System Build?

[Carl L.]

I am not sure which lead lag block you are refering to as there is not specific lead lag block on the SystemBuild palette. On the dynamic palette there is a NumDen block that could be used to implement a lead lag controller. All of the blocks have a help button on the properties dialog. This help putton will take you to the HTML help, which will have some more details on the block.

Carl Ljungholm
National Instruments
www.ni.com/matrixx

[gasilva]

We do not use matrixx here, however, I am trying to understand a control block diagram written for Matrixx. It is a project that we are currently working. In this diagram, I have a block called lead lag with 4 constants parameters (LD, LG, RS, IV), one input and one output. Is it a standard or a library component? Or is it a customized (super block) component? If it is not part of Matrixx, I will ask the author how it was implemented. Despite a lead-lag is a very basic transfer function, I would like to know exactly what was implemented. I can not have any doubt regarding how the zeros and poles were define, or whether the gain in unity or not.

[Carl L.]

It definately looks like a custom component. When you look at the heirarchy in the Catalog Browser you should be able to pick up some clues as to whether it is a component or not. There is a Component section of the Catalog Browser and if the block is a component then it should be listed there. If it is not an encrypted component then you should be able to right-click it in the Component view and choose Compent Catalog, how ever it is encrypted you would not be able to see the internals.

Carl L
National Instruments
www.ni.com/matrixx