Speed control device

Details Speed control device Speed control device

2007-01-16

2007-01-16

Knight, Anthony (Department: 2121)

Data processing: generic control systems or specific application

Generic control system, apparatus or process

Optimization or adaptive control

C318S609000, C264S040100

Reexamination Certificate

active

10484073

ABSTRACT:
In a speed control system, there are provided a speed observer compensator (10) for inputting a difference between a speed VMof a mechanical system (5) and an estimated value VMOof a speed of the mechanical system (5) which is obtained by a speed observer (6) and outputting a speed difference VM−VMObased on the input, and a mechanical system model (8) for inputting a sum of an output of the speed observer compensator (10) and an output Troof a PI controller (2), and the speed observer (6) is constituted in such a manner that the signal VMOproduced after a passage of an output of the mechanical system model (8) through a filter delay element model (11) and a dead time delay element model (12) is equal to the speed VMof the mechanical system (5), and the output of the mechanical system model (8) is set to be a speed feedback signal Vfof the speed control system. Consequently, it is possible to provide a speed control device capable of removing the high frequency component of the speed feedback signal, compensating for the phase delay of the delay element so as not to generate an oscillation having a high frequency, and causing the speed of the mechanical system to follow a target speed with high precision.

REFERENCES:
patent: 4448736 (1984-05-01), Emery et al.
patent: 6252369 (2001-06-01), Kaku et al.
patent: 1026818 (2000-08-01), None
patent: 9-26801 (1997-01-01), None
patent: 9-238489 (1997-09-01), None

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