| 摘要 |
A reverse bump test, for identifying the alignment of a sheetmaking system while the system remains in closed-loop control, includes the following step s: (a) leaving the control system in closed-loop, (b) artificially inserting a step signal on top of the measurement (or setpoint) profile from the scanner , (c) recording the data as the control system moves the actuators to remove t he perceived disturbance (or setpoint change), and (d) refining or developing a model from the artificial measurement disturbance (or setpoint change) to th e actuator profile. The technique supplies the probing/perturbation signal to the scanner measurement (which is equivalent to supplying the probing/perturbation signal to the setpoint target) rather than inserting bumps via the actuator set points as has been practiced traditionally.</SDOA B>
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