Patent ID: 7181295

Claim:
A controller with an adjustable deadtime compensation for adjusting a control performance and robustness of a system, wherein said controller receives a set point, comprising: a feedback controller for generating a first function in response to a difference between said set point and a feedback function; a process for generating a second function in response to a sum of said first function and a load variable of said system; and a deadtime compensator coupled to said feedback controller for generating a third function in response to said first function, wherein said feedback function is a difference between said second function and said third function; wherein said deadtime compensator comprises a first transfer function having a tuning parameter so that a feedback deadtime constant is adjusted by controlling said tuning parameter of said transfer function, thereby adjusting said control performance and robustness of said system, and a second transfer function expressed as {tilde over (G)}={tilde over (G)}*e −{tilde over (D)}s , wherein {tilde over (G)} is a process model, {tilde over (G)}* is a delay free part of the process model, {tilde over (D)} is a deadtime of the process model, and with said first transfer function being expressed as {tilde over (G)}*=e −{tilde over (D)}s −e −(1−K SP ){tilde over (D)}s , wherein K SP is said tuning parameter.