| FFT Q-1-10 |
Quality control of power steering pump |
 |
-
When a hydraulic pump for the
automotive power steering is driven by a drive
motor to generate hydraulic pressure, pulse
pressure vibration occurs. The vibration
detected by the NP-3418 accelerometer with
built-in preamplifier and the rotation pulse of
the drive motor detected by a rotation detector
are sent to the CF-4700 FFT comparator. The peak
hold function of the CF-4700 detects amplitude
of the first to the n-th order component of
rotation for pulse pressure vibration. ON/NG
judgment power steering pump is made depending
on the peak level.
-
The block comparator function
makes OK/NG judgment by the block area (maximum
setup: 20 blocks) set in a certain frequency
range and level range. Six kinds of judgment methods (level, peak level, peak max, insideMax, partial overall or area rate of content) are available
for each block. Also the digital I/O function
enables control via PLC using comparator output.
-
The measurement results can be
stored into a PC via LAN or RS-232C interface.
|
| |
Model |
Product name |
Remarks |
| 1 |
CF-4700 |
FFT comparator |
Input channel: 1ch,
frequency range:1 Hz to 40 kHz, dynamic
range: 90dB |
|
2 |
CF-0471 |
Tracking function |
Constant width/constant
ratio tracking, the number of maximum
analysis orders: 800 |
|
3 |
NP-3418 |
Accelerometer with built-in preamplifier |
Compact and light
weight type (approx. 1.9 g), frequency
range: 0.8 Hz to 16 kHz ±3 dB, resonance
frequency: approx. 40 kHz |
|
4 |
NP-0021 |
Miniature･BNC conversion connector |
Conversion cable
between miniature connector of the
NP-0150 series signal cable end and BNC
connector |
|
5 |
HT-5500 |
Handheld type digital tachometer |
Contact and non-contact
type, LCD 5-digit, 12mm Reflective marks
x 1 sheet (12-mm square; 25 pcs.) and
carrying case are provided as standard. |
|
6 |
AX-501 |
Analog output cable |
For rotation pulse
signal for the HT-5500(2m) |
|
|
|
