
4.SERVO FUNCTION DETAILS B-65270EN/05
- 108 -
(3) Features of servo HRV control
(a) Servo HRV2 control
Servo HRV control is a total control technology implemented by a
servo motor, servo amplifier, and control systems as shown in the
figure below. Servo HRV2 control has the following features:
(1) HRV filters for eliminating vibration components of the machine
system can be used.
The HRV filters include the following filters to cover a wide
range of vibration from low frequency vibration to high
frequency vibration:
TCMD filter (a filter for eliminating middle frequency vibration)
Resonance elimination filter (a filter for eliminating high
frequency vibration)
Disturbance elimination filter (a filter for eliminating low
frequency vibration)
(2) Use of a α
iS/αiF/βiS series motor and a αi/βi servo amplifier
enables high-speed, high-precision, and smooth feed.
(3) Use of a precise pulse coder improves control performance.
With Series 90B0, 90B1, 90B6, and 90B5, it is recommended that
servo HRV2 control be used for the current loop.
HRV current
control
Position
control
Velocity
control
elocity feedback
Current feedback
HRV filte
Servo
amplifier
Detects
current with
hi
h precision.
High-response, high-precision detecto
Capable of handling low-frequency
vibration to high-frequency vibration
Exercises current control
at high speed.
(b) Servo HRV3 control
In addition to the features of HRV2 control, servo HRV3 control has
the following features:
(1) Use of high-speed DSP enables high-speed HRV current control,
therefore improving the response performance of the current
loop.
(2) When a linear motor or an α
iS series servo motor are used, both
high acceleration, high speed and high precision can be provided
at the same time.
With Series 90D0 and 90E0, use of servo HRV3 control is
recommended.