| 摘要 |
<p>The present invention discloses a machine-accessible medium having instructions stored thereon that, when executed, cause a machine to receive a control signal and a feedback signal as well as to calculate from the control signal and the feedback signal a drive value. Furthermore the medium calculates a slew limit based on at least one or more of the drive value, the feedback signal, the control signal, and a noise level of the feedback signal, whereby the slew limit can change according to the state of the drive value, the feedback signal, the control signal and/or the noise level. The method further determines if a difference between the drive value and a previous drive value is greater than the calculated slew limit of an electro-pneumatic controller; and changes the calculated drive value based on the slew limit.</p> |
