| 摘要 |
PURPOSE:To achieve stable control even for a process where dead time is in variance, by applying the length of dead time in variance calculated with operation from the operation state date of the process to a controller with operator as a parameter. CONSTITUTION:A dead time compensator 11 inputs a process variable from a measurement value input section 18 for dead time compensation, and a control output as the result is transmitted to a process 16. A function operator 12 inputs a data signal obtained through an operation state signal input section 14, makes operation according to a specified function at a function set section 13, and the result is given to the dead time compensator 11 as a parameter Lc15. A controller 10 consists of them. Thus, even if the operating state of the process changes, the parameter Lc15 keeps a value near the true process dead time at all times, allowing control with safety. |
