i have

[ivaravi]

to use a signal rate limiter in my vi.that means the rate at which an output rises should be `within the limits 0.1 and -0.1. and it is in a loop, so the process makes the signal rise gradually.pls help needed urgently.it is a rate limiter.how to do this?iam actually working on the ieee dynamic models for controlling a motor generator set. so in the speed control loop, the speed of the motor should rise slowly.

[Carl L.]

to use a signal rate limiter in my vi.that means the rate at which an output rises should be `within the limits 0.1 and -0.1. and it is in a loop, so the process makes the signal rise gradually.pls help needed urgently.it is a rate limiter.how to do this?There are two different approaches. If the rate is a signal in your model (that is acceleration is a signal in your model) then you can use the In Range and Coerce function on the Comparison pallete to limit it to your range.
If the you are trying to limit the rate of a signal (that is the signal is speed) then the PID Control Toolkit has a VI called Rate Limiter.vi. This allows you to limit the slew rate of the signal. The PID Control Toolkit comes with LabVIEW Real-Time, or if you don't have LabVIEW RT it can be purchased seperately. http://sine.ni.com/apps/we/nioc.vp?cid=1394〈=US

Carl L
National Instruments