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Figure 1 from A Tuning Method for the Derivative Filter in PID Controller with Delay Time | Semantic Scholar
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image processing - What is the different between LoG (Laplacian of Gaussian) filter, first and second derivative Gaussian filter? - Stack Overflow
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PDF] Multiverse optimized fuzzy-PID controller with a derivative filter for load frequency control of multisource hydrothermal power system | Semantic Scholar
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