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- $\begingroup$ Depends on what you mean by "forward". Time shifts are implemented as delays, but they can only go backwards in time (i.e. only have access to past samples). The other way around is non-causal and violates the laws of physics. Can't be done. $\endgroup$Hilmar– Hilmar2024-11-08 12:41:53 +00:00Commented Nov 8, 2024 at 12:41
- $\begingroup$ @Hilmar thank you very much for your reaction. The above mentioned feedforward compensation leads to a non-causal $H_{ff}(s)$ which can be realized neither in digital nor in analog domain. My question is whether there is some method how to approximate the phase lead which is basically hidden in the $e^{s\cdot T_d}$ term. The only one idea which I have is the lead compensator. But there will be some amplification present. $\endgroup$Steve– Steve2024-11-08 12:59:54 +00:00Commented Nov 8, 2024 at 12:59
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