초록 ▼

Servo spool control for tape web positioning is disclosed wherein the position of the web between two spools may be accurately known and controlled and the tension on the web maintained. To accomplish such control, the motors driving the respective spools are driven by dynamic torque signals in resp

Servo spool control for tape web positioning is disclosed wherein the position of the web between two spools may be accurately known and controlled and the tension on the web maintained. To accomplish such control, the motors driving the respective spools are driven by dynamic torque signals in response to change in position commands from a computer controller wherein the dynamic torque signals are correlated to the inertial torque and frictional torque of the spools and their drives.

대표청구항 ▼

Apparatus for longitudinally positioning a tape web, comprising: a frame; means associated with said frame for rotatably supporting first and second spools adapted to contain opposite ends of a tape web; an application member connected to said frame between the spools and over which the tape web is

Apparatus for longitudinally positioning a tape web, comprising: a frame; means associated with said frame for rotatably supporting first and second spools adapted to contain opposite ends of a tape web; an application member connected to said frame between the spools and over which the tape web is to be longitudinally positioned; first drive means for applying a torque to the first spool; second drive means for applying a torque to the said spool; means for generating a position signal indicative of a desired longitudinal movement of the tape web over said application member; means for generating a first dynamic torque signal in response to said position signal, said first dynamic signal being correlated to at least one of an inertial torque and a frictional torque of the first spool and said first drive means; means for generating a second dynamic torque signal in response to said position signal, said second dynamic torque signal being correlated to at least one of (1) an inertial torque of the second spool and said second drive means, (2) a frictional torque of the second spool and said second drive means, and (3) a frictional force of the tape web being positioned over said application member; means for generating a primary driving command signal correlated to at least (1) a following error difference between the desired longitudinal movement and an actual longitudinal movement of the tape web over said application member and (2) said first dynamic torque signal; means for generating a secondary driving command signal correlated to at least said second dynamic torque signal; means for coupling said primary driving command signal to said first drive means for applying torque to the first spool; and means for coupling said secondary driving command signal to said second drive means for applying torque to the second spool whereby to longitudinally position the tape web over said application member.