Low-Pass Filter - Mitsubishi Electric GENERAL PURPOSE AC SERVO MR-E- A/AG Instruction Manual

8. SPECIAL ADJUSTMENT FUNCTIONS
(2) Parameters
The operation of adaptive vibration suppression control selection (parameter No.60).
Parameter No. 60

8.4 Low-pass filter

(1) Function
When a ballscrew or the like is used, resonance of high frequency may occur as the response level 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(Hz)
(2) Parameter
Set the operation of the low-pass filter (parameter No. 60.)
Adaptive vibration suppression control selection
Choosing "valid" or "held" in adaptive vibration suppression
control selection makes the machine resonance suppression
filter 1 (parameter No. 58) invalid.
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. 60: 0000).
Setting the adaptive vibration suppression control sensitivity can change
the sensitivity of detecting machine resonance. Setting 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.
(1 Ratio of load inertia moment to servo motor inertia moment setting 0.1)
2
Parameter No. 60
Low-pass filter selection
0: Valid (automatic adjustment)
1: Invalid
POINT
In a mechanical system where rigidity is extremely high and resonance
level is difficult to occur, setting the low-pass filter to be "invalid" may
increase the servo system response level to shorten the settling time.
Speed control gain 2 setting 10
initial value
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