Self-adapting feedforward control tuning for motion system,...

Details Self-adapting feedforward control tuning for motion system,... Self-adapting feedforward control tuning for motion system,...

2007-01-30

2007-01-30

Fuller, Rodney (Department: 2851)

Photocopying

Projection printing and copying cameras

Step and repeat

C355S072000, C355S075000, C355S077000

Reexamination Certificate

active

10973980

ABSTRACT:
A motion control system is presented. In an embodiment of the invention, the motion control system compares a motion profile setpoint generator configured to generate a set of profile setpoint signals including a position profile setpoint signal and additional profile setpoint signals. The feedforward controller generates a feedforward signal by summing the additional profile setpoint signals, the additional profile setpoint signals being multiplied by a respective coefficient. The motion control system is configured to (a) select an initial setting of the respective coefficients, (b) cause the motion profile setpoint generator to generate a set of profile setpoint signals so as to execute a motion profile, (c) measure an error between the position profile and an output position signal, and (d) update the respective coefficients by adding a product of the error and a respective learning gain thereto. In an implementation, standard motion controllers can be used.

REFERENCES:
patent: 6686716 (2004-02-01), Predina et al.
patent: 6949844 (2005-09-01), Cahill et al.
patent: 7057705 (2006-06-01), Heintze
patent: 2005/0043834 (2005-02-01), Rotariu et al.
patent: 2005/0231706 (2005-10-01), Yang et al.

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