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iNisys (inline NVH inspection system)

Inline NVH Quality Inspection System

iNisys (iNisys – inline NVH inspection system) is an application for vibration analysis of rotating bodies based on Frequency Analysis and Order Analysis. It is useful for inspection of shock vibration signals of engines, motors, etc., and noise and vibration quality inspection of drivelines such as transmissions, motors, reducers, rear axles, front axles, hydraulic pumps, torque converters, and torque transfers.

iNisys can perform time domain analysis such as Rms, Peak, Crest Factor, and Kurtosis, and frequency domain analysis such as Harmonic, Sideband, Harmonic Sum, and Curve. Also, order tracking curve analysis for rotation speed is possible. An external control communication protocol and database related application are provided for inline inspection.

In addition, when our Neurobox inspection engine is used together, it is possible to detect the type of impact fault signal that general frequency analyzers and order analyzers cannot detect.

Recently, the post-processing analysis function was strengthened in iNisys to reproduce the situation measured in EOL and to check the presence or absence of specific issues during measurement. In addition, it has been implemented so that the user can hear it by outputting it again as sound. And by adding functions such as Logger Overlap, the analysis function has been strengthened.

Hardware Specification

4CH DSA

8CH DSA

Sensor Module

Items	Specifications
A/D	24-bit / 102.4kHz
Channels	4ch or 8ch for Analysis (Acceleration or Microphone) / 1ch for Indexing
Order Resolution	0.125, 0.25, 0.5, 1.0 selectable
Max Order	1024, 512, 256, 128, 64, 32
Speed Range	Up to 12000rpm (Max = 256 Order)
Input Signal Range	±10V (Dynamic Range : Min 100dB)
Stethoscope	Speaker, Headphone (option)
Sensor	Accelerometer(Sensor Module), Microphone (option)

Software Specification

NVH Measurement Application

Time Signal / Spectrum Graph Display
Drive & Driven Shaft separation function
Defect Position Display
Order Tracking Measurements
Color Map Measurement (STFT, Spectrogram)
Communication Logging and Display
Device Check function

Parameter Management Program

Rotating body specification input (number of gear teeth/motor pole, etc.)
Test type management
Measurement mode and code management
Batch function
Line code management Standard value status Check
MES code and DPID status Check

Data Search/View Program

Order Tracking Overlap
Spectrum Overlap
Trend View
Report Format setting and output
First Pass Yield (Direct pass rate) check function
post-processing learning
Statistical processing first (mean, standard deviation, NG rate)

Wave Recording & Playback

Full Cycle Recording and Sound Output function
Save Test mode and measurement time information
Wave File Analysis Tool
Recording data rolling (automatic deletion of 1 month archive) function added
Head Acoustics HDF file output
Compare vehicle evaluation and EOL evaluation data in one DB (Database)
International standard data format conversion - LMS, B&K readable

Analog Logger Overlap function

Vibration Rms trend for full cycle can be viewed or data overlap of multiple products is possible
Measurement and overlap of physical quantities such as Torque, Force, Pressure, and Rpm are possible

Application

Motor & Drive Unit
TransAxle & Transmission
Power Transfer Unit
Engine
Transmission Parts
Engine Parts
ETC.

Drive unit production/assembly lines have increased rapidly due to the recent demand for electric and hybrid vehicles.
iNisys is capable of vibration inspection of motors and drive units that require high-speed order analysis over 6000~12000 RPM.

▲ EV Motor

▲ HEV Motor

▲ Drive Unit

▲ Electric Compressor

▲ HSG

▲ Start Motor

Psylogic has a record of selling hundreds of transmission inline inspection systems and has the appropriate know-how. Inspection of defective parts of the transmission is performed through order analysis and drive/driven shaft separation technique, and it can be applied to structures such as planetary gears and CVTs. (Automatic calculation of Belt or Chain order)

▲ M/T

▲ 6AT

▲ FR8AT

▲ AMT

▲ DCT

▲ CVT

Among the power transmission devices, Axle, PTU, ATC, etc. have a simpler structure than the transmission, but problems arise in NVH repeatability and multiple test Benches value deviation depends on assembly condition of input & output motor on Test Benches. Psylogic diagnosis the root causes of Test benches through NVH Data.

▲ Front, Rear Axle

▲ PTU

▲ 상용 Axle

▲ ATC

▲ Torque Transfer

In General, The major characteristic of the engine's NVH data is input of impulse signal due to assembly failures. iNisys can enhance defect detection applying Peak Count and Delta Code for impact signals.