18-25 2026 [춘계학술대회]
| 제목 | 전동 액추에이터 NVH 평가를 위한 공진 회피형 시험 지그의 해석 기반 설계 및 검증 연구 |
|---|---|
| 분야 | 모빌리티 동력 및 구동시스템 |
| 언어 | Korean |
| 저자 | 장보연(계양전기), 변효중(계양전기), 오성섭(계양전기), 박태일(계양전기) |
| Key Words | Actuator (액추에이터), Test jig(시험 지그), Modal analysis(모드해석), Electromagnetic excitation Force (전자기 가진력), Gear mesh frequency(기어 메시 주파수), Modal Assurance(모달 신뢰도 기준) |
| 초록 |
This study proposes an analysis-based resonance-avoiding design methodology for NVH evaluation test jigs for electromechanical actuators. Electromechanical actuators generate dominant vibration excitations from grear mesh frequency (GMF) and electromagnetic excitation force (EMF), which may coincide with the structural resonance of test jigs and distort measurement results. To address this issue, excitation frequencies derived from gear kinematics and motor electromagnetic characteristics were identified, and a modal analysis-based jig design approach was applied to ensure sufficient frequency separation between excitation frequencies and jig natural modes. Finite element modal analysis and experimental modal testing were conducted to validate the jig structure. The designed jig achieved more than ±10% frequency separation from dominant GMF and EMF excitations. The differences between experimental and analytical natural frequencies were within 1%, 5%, and 7% for the first, second, and third modes, respectively. In addition, MAC values above 0.7 confirmed good modal correlation. The proposed approach provides a systematic methodology for the analysis-based resonanceavoidance design and validation of NVH evaluation test jigs for electromechanical actuators. |
| 원문(PDF) | 다운로드 |