TG - Torque Gradient

Tools

ES

STR

SL

ST

SR

QST

IXB

This monitor checks that the gradient is within the limit.

Parameter

Description

Gradient Angle Window

Specifies Angle Window:

  • For Hard Joint: Angle Window = 1 deg.

  • For Soft Joint: Angle Window = 20 deg.

  • Manual: Manually set Angle Window.

Angle Window

Available when Gradient Angle Window is set to Manual. Must be > 0 and <= 100.

End Point Check

If set to Yes, only the gradient measured at the shut off point of the step is checked to be within the limits.

Trigger Torque

The angle measurement starts at this trigger. Must be > 0 and < Tool MaxTorque.

Damping

Frequency in which the gradient is being calculated. Must be > 0 and < 100 and < Angle window.

Low Limit

Lowest acceptable torque gradient. Must be >= -100.

High Limit

Highest acceptable torque gradient. Must be > -100 and > Low limit.

Torque Filter Type

The type of the filter:

  • None: No filtering of the torque is used. The raw values are used as-is in the gradient calculation.

  • Five-point: The torque value used in the calculation are filtered using a sliding average filter over 5 torque samples.

  • Low pass: The torque values is filtered with a simple discrete Infinite Impulse Response filter.

  • Sliding Average: The torque values used in the calculation are filtered using a sliding average filter over a Number of Samples specified by the use.

Cut-off Frequency

Needs to be specified when Torque Filter Type is set to Low pass:

  • 20 Hz

  • 40 Hz

  • 90 Hz

  • 200 Hz

  • 600 Hz

Number of Samples

Needs to be specified when Torque Filter Type is set to Sliding Average:

  • 2

  • 4

  • 6

  • 8

  • 16

  • 32

Angle Offset

Available when End Point Check is set to No. Specifies the degrees that the calculation of the gradient start after the trigger torque is passed for the first time.