EV / New EnergyThree-electric Tier 1 / OEM e-drive labs
EV E-Drive Electrical + Mechanical Dual-Order Analysis
01
Pain Points
- !In multi-in-one assemblies, electromagnetic/mesh orders and PWM sidebands intermix, making "which part is whining" hard to locate.
- !Sound/vibration/electrical/RPM quantities must be synchronized, but single-purpose software is rigid.
- !Order-slice comparison and fault-source ranking lack a path that can be preserved.
02
The Tinia Approach
Extract orders separately in the mechanical and electrical domains, overlay them in a two-color Campbell diagram, and use per-order slices to rank fault sources — switch assemblies by changing only the data source.
Split channelsMechanical-domain ordersElectrical-domain ordersTwo-color CampbellOrder slices
03
Nodes Used
Channel Selectchannel_select
Split sound/vibration/electrical/RPM channelsOrder Trackingorder_tracking
Extract mechanical- and electrical-domain ordersPivot Matrixmatrix_view
Two-color Campbell overlayChart Viewerchart_viewer
Per-order slices and fault-source rankingCore nodes; add or remove steps as needed for your data and standards — the node graph is always editable.
04
Expected Output
- A two-color Campbell overlay of mechanical and electrical orders.
- Per-order slice curves that locate the part responsible for the whine.
- A reusable e-drive NVH analysis workflow.
Reference Standards / Engineering PracticeEngineering practice · IEC 60349 series
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