Mitsubishi HD-5000A Instruction Manual download pdf (Page 222)

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9 - 1

9. SPECIAL ADJUSTMENT FUNCTIONS

POINT

The functions given in this chapter need not be used generally. Use them

if you are not satisfied with the machine status after making adjustment

in the methods in chapter 8.

If a mechanical system has a natural resonance point, increasing the servo system response may cause

the mechanical system to produce resonance (vibration or unusual noise) at that resonance frequency.

Using the machine resonance suppression filter and adaptive vibration suppression control functions can

suppress the resonance of the mechanical system.

9.1 Function block diagram

except

Servo

motor

Parameter

No.62

Parameter

No.63

Parameter

No.63

Current

command

Machine resonance

suppression filter 1

Adaptive vibration

suppression control

Encoder

Machine resonance

suppression filter 2

Speed

control

00 0

Low-pass

filter

Parameter

No.61

9.2 Machine resonance suppression filter

(1) Function

The machine resonance suppression filter is a filter function (notch filter) which decreases the gain of

the specific frequency to suppress the resonance of the mechanical system. You can set the gain

decreasing frequency (notch frequency) and gain decreasing depth.

Mechanical

system

response

Machine resonance point

Frequenc

Notch

depth

Notch frequency

Frequency

1 2 ... 217 218 219 220 221 222 223 224 225 226 227 ... 355 356

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Mitsubishi HD-5000A Instruction Manual Page 222

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