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Pid sin control design labview8/7/2023 ![]() Where x(k) is the state at the kth time step, and Ts is the sample time. The discrete derivative, x', is ( Euler Method): x(k) - x(k-1) When you control the VI manually, however, you are causing sudden changes in input that may not be "smooth", and this choppiness causes noise. the time derivatives of your inputs do not have any sudden breaks in them they are sines and cosines just like the inputs themselves. My first thought regarding the noise is that when you use LabVIEW to provide inputs, you are providing "smooth" inputs, i.e. non-noisy charts? And what is the sample rate that you are using to solve the ODE? Is this done in the Control Design and Simulation loop, or another structure like a timed loop? This is not really a full answer, but I do not have enough reputation to post a comment, so here it is.įirst, could you please post pictures of your noisy vs.
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