HW Signal analyzers 25.6 and 102.4 kHz Laser vibrometers for linear and angular vibration Deltatron Accelerometers, Triaxial Accelerometer Free-field ½’’ Microphones Sound Intensity Probe Free-field ½ Microphones, Sound Intensity Probe Photoelectric Tachometer Probe Exciter 100N & Power Amplifier 120 VA Accelerometer Istron 0.05 Hz Delta Tron Impact Hammer Force sensors Sound level meter MEDIATOR l d Incremental rotary encoders SW Matlab-Simulink and Toolboxes dSPACE Support Code Generation dSPACE Support Code Generation PULSE LabShop, consultant tools ME’Scope VES (Operational Deflection Shapes, Modal Analysis) BRÜEL&KJÆR, ENDEVCO, TIRA, LDS, dSPACE 30.1.2011
Transcript
HW Signal analyzers 25.6 and 102.4 kHz Laser vibrometers for linear and angular vibration Deltatron Accelerometers, Triaxial Accelerometer Free-field ½’’ Microphones Sound Intensity Probe Free-field ½ Microphones, Sound Intensity Probe Photoelectric Tachometer Probe Exciter 100N & Power Amplifier 120 VA Accelerometer Istron 0.05 Hz Delta Tron Impact Hammer Force sensors Sound level meter MEDIATOR
l d Incremental rotary encodersSW Matlab-Simulink and Toolboxes dSPACE Support Code Generation dSPACE Support Code Generation PULSE LabShop, consultant tools ME’Scope VES (Operational Deflection Shapes, Modal
Analysis)
BRÜEL&KJÆR, ENDEVCO, TIRA, LDS, dSPACE
30.1.2011
Dimension 12,3 x 10,9 x 3,75 mDimension 12,3 x 10,9 x 3,75 m Wedge 0,98 m
Satisfying for a noise source of the form of a cube max 1,1 m.
1/30/2011
Anti-lock Braking System (ABS) Anti-lock Braking System (ABS)Control & Animation dSpace configuration
DS1005DS1005 DS2211
ABS
Virtual reality - animationValve simulator
1/30/2011
Internal Combustion Engine Control Unit (ECU) Internal Combustion Engine Control Unit (ECU)PC based model
py
Atmosféri
í
Ignition advance
130
140
Ignition advance
ECU 70
80
90
100
110
120
130
krou
ticí m
omen
t (N
m)
sériovásériová přeprogramovanáprogramovatelná
1/30/2011
ECU60
70
1500 2500 3500 4500 5500
otáčky (1/min)
All wheel steering (AWS) All wheel steering (AWS)3D model„Crab“ vehicle of TATRA
design
Slow speeds
Fast speeds
1/30/2011
Simulink model of the ABS Hydraulic system Simulink model of the ABS Hydraulic system
ABS
1/30/2011
ABS
Control systemControl system
Safety test
1/30/2011
Arrangement of the test Test rig for impulse sensors grig for the wheel speed Hall effect sensors
1/30/2011
Rotation uniformity of a car engine evaluated Rotation uniformity of a car engine evaluated using the impulse signal for ECU
Crankshaft angular acceleration
200
250
300+ Power stroke
Crankshaft angular acceleration
50
0
50
100
150
rad/s2
-200
-150
-100
-50
0 0,2 0,4 0,6 0,8 1 1,2 1,4 1,6 1,8 2
Revolution- Compression stroke
Revolution
Two complete rotations
Engine idle speed 800 RPMInpulse signal for ECU
1/30/2011
4-cylinder / 4-stroke engine
Simplifying handling with the PULSE program Simplifying handling with the PULSE program and a database of measurements
Automation program DatabaseAutomation program(Visual Basic)
Database client Measurement software
Measurement controldata
Component data data
Database
(MS Access) (PULSE)
Data file(MS Access) Data file administration
(MS Access)
Component data Measurement data
Data file definition, information about them
(MS Access)
Automation software
1/30/2011
Analysis of the header Order analysis of the car Analysis of the header back exhaust noise
Order analysis of the car external noise with signal de-dopplerisation
Vold-Kalman : vyfuk_L_mono.wav 2 : Signal
1500020000
25000
-5000
0
500010000
[-]
2 ord4 ord6 ord8 d
-25000
-20000-15000
-100008 ord
Signal processing with the use of the Vold-Kalman order tracking filter
0 5 10 15
Time [s]
30.1.2011
g p g g
Design of High Contact Transmission error Design of High Contact Ratio (HCR) gears
Transmission error measurements for optimizing gear designLCR HCRLCR HCR
PinionWheel
r2
Noisy gears
Quiet gears
Transmission Error
0.1 2 IRC sensorso
21
101234
[mic
ron]
-4-3-2-1
0 1 2 3
Tooth pitch rotation
TE
Design improvements results in decreasing of the gearbox SPL b 10 dB
30.1.2011
Tooth pitch rotation
500 RPM, +40 Nm 500 RPM, +80 Nmby10 dB
Active vibration control faces instability due to the oil film Active vibration control faces instability due to the oil film
Passive improvements of the bearing geometry
1
groove
Pressure dam Tilting pad
geometry
Lemon
An active control of journal bearings2 InstabilityAn active control of journal bearings2
