Гайд користувача
NVH-інженерія електросамоката: Noise/Vibration/Harshness як п'ята cross-cutting infrastructure axis — UN R51 (motor-vehicle noise) + UN R138 (AVAS quiet road transport) + UN R41 (motorcycle noise) + EU Regulation 540/2014 + FMVSS 141 (49 CFR 571.141 minimum sound for hybrid/electric) + ISO 362-1:2015 vehicle drive-by noise + ISO 2631-1:1997+Amd 1:2010 whole-body vibration + ISO 2631-5:2018 multi-shock + ISO 5349-1/-2:2001 hand-arm vibration (cross-ref) + ISO 11819-1:2023 SPB + ISO 11819-2:2017 CPX road-pavement noise + IEC 60068-2-6:2007 sinusoidal vibration + IEC 60068-2-64:2019 broadband random vibration + MIL-STD-810H:2019 Method 514.8 + ISO 16750-3:2023 automotive mechanical loads + ISO 8608:2016 road surface PSD + ISO 1680:2013 rotating electrical machines airborne noise + ISO 532-1:2017 Zwicker loudness + IEC 61672-1:2013 sound level meters + ISO 13473-1 mean profile depth + SAE J2889 + SAE J3043 + NHTSA NPRM 2009 + EU Reg 540/2014 AVAS mandate (M/N from 2019/2021) + Japan MLIT Article 43-3 + China GB/T 41788-2022
Інженерний deep-dive у NVH (Noise/Vibration/Harshness) електросамоката як п'ята cross-cutting infrastructure axis — паралельна до [інженерії різьбових з'єднань як joining-axis](@/guide/fastener-and-bolted-joint-engineering.md), [термоменеджменту як heat-dissipation axis](@/guide/thermal-management-engineering.md), [EMC/EMI як interference-mitigation axis](@/guide/emc-emi-engineering.md) і [кібербезпеки як interconnect-trust axis](@/guide/cybersecurity-engineering.md). Покриває: 10-row standards matrix (UN R51, UN R138, FMVSS 141, EU Reg 540/2014, ISO 362-1, ISO 2631-1/-5, ISO 11819-1/-2, IEC 60068-2-6/-64, MIL-STD-810H, ISO 16750-3, ISO 8608, ISO 1680, ISO 532-1, IEC 61672-1); 7-row noise-source matrix (motor PWM whine 8 kHz fundamental + harmonics + tire-pavement roll + gear mesh + bearing noise ISO 1680 + brake squeal + freewheel pawl + AVAS speaker); 6-row vibration-source matrix (motor unbalance + road surface PSD ISO 8608 A-H + suspension transmissibility + frame fork harmonics + bearing defect BPFO/BPFI + tire harmonic + freewheel impulse); 4-row AVAS regulations matrix (UN R138 EU + FMVSS 141 US + Japan MLIT Article 43-3 + China GB/T 41788-2022); 6-row mitigation matrix (motor laminations + skewing + spread-spectrum PWM + isolator pad + tuned-mass damper + visco-elastic absorber + acoustic enclosure); 4-row durability test matrix (IEC 60068-2-6 sinusoidal + IEC 60068-2-64 broadband random + MIL-STD-810H Method 514.8 + ISO 16750-3 automotive); 8-step DIY NVH check; 6-step DIY remediation; ISO 8608 road class A-H PSD scale; silent EV → AVAS adoption case study; 16 нумерованих розділів.