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Filter switching method for a machine control system

  • US 10,491,195 B2
  • Filed: 08/09/2016
  • Issued: 11/26/2019
  • Est. Priority Date: 08/11/2015
  • Status: Active Grant
First Claim
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1. A filter switching method for a control system of a machine, the machine having a first machine axis and a second machine axis, each of the first and second machine axes including a drive and first and second desired value filters, the method comprising the steps:

  • for the first machine axis;

    a) applying an input signal to the first desired value filter to generate a first output signal supplied to the drive;

    b) applying the input signal to the second desired value filter to generate a second output signal supplied to the drive of the respective machine axis, wherein the first and second desired value filters for the respective machine axis have different running times;

    c) determining a deviation between the first output signal and the second output signal;

    d) when the respective deviation in step (c) falls below an adjustable threshold value, immediately disconnecting the respective first desired value filter from the drive of the respective machine axis and connecting the second desired value filter to the drive of the respective machine axis; and

    e) repeating steps a)-d) for the second machine axis,wherein the first desired value filter of the first machine axis is disconnected from the drive of the first machine axis and the second desired value filter of the first machine axis is connected to the drive of the first machine axis at a time the first desired value filter of the second machine axis is disconnected from the drive of the second machine axis and the second desired value filter of the second machine axis is connected to the drive of the second machine axis, andwherein the first desired value filter and the second desired value filter for the drive of the first and second machine axes are connected and disconnected, respectively, when the deviations for both machine axes simultaneously fall below their respective adjustable threshold value at a same time.

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