Bose MR-J2S- B Low-pass filter Function, Set the operation of the low-pass filter parameter No.25

7. SPECIAL ADJUSTMENT FUNCTIONS

(2)Parameters

The operation of adaptive vibration suppression control selection (parameter No.25).

Parameter No. 25

0 0

Adaptive vibration suppression control selection

0:Invalid

1:Valid

Machine resonance frequency is always detected to generate the filter in response to resonance, suppressing machine vibration.

2:Held

Filter characteristics generated so far is held, and detection of machine resonance is stopped.

Adaptive vibration suppression control sensitivity selection

Set the sensitivity of detecting machine resonance.

0:Normal

1:Large sensitivity

POINT

Adaptive vibration suppression control is factory-set to be "invalid" (parameter No. 25: 0000).

The filter characteristics generated are saved in the motion controller every 10s since power-on. At next power-on, vibration suppression control is performed with this data saved in the motion controller being used as an initial value.

Selection the adaptive vibration suppression control sensitivity can change the sensitivity of detecting machine resonance. Selection of "large sensitivity" detects smaller machine resonance and generates a filter to suppress machine vibration. However, since a phase delay will also increase, the response of the servo system may not increase.

7.4 Low-pass filter

(1)Function

When a ballscrew or the like is used, resonance of high frequency may occur as the response of the servo system is increased. To prevent this, the low-pass filter is factory-set to be valid for a torque command. The filter frequency of this low-pass filter is automatically adjusted to the value in the following expression:

Filter frequency		Speed control gain 2 set value 10
(Hz)
	2	(1 ratio of load inertia moment to servo motor inertia moment set value 0.1)

(2)Parameter

Set the operation of the low-pass filter (parameter No.25).

Parameter No. 25

0

Low-pass filter selection

0:Valid (automatic adjustment) initial value

1:Invalid

POINT

In a mechanical system where rigidity is extremely high and resonance is difficult to occur, setting the low-pass filter to be "invalid" may increase the servo system response to shorten the settling time.

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