噪声与振动控制
譟聲與振動控製
조성여진동공제
NOISE AND VIBRATION CONTROL
2014年
2期
216-219
,共4页
振动与波%隔振器%阻抗测试%四端参数法%自由边界模拟
振動與波%隔振器%阻抗測試%四耑參數法%自由邊界模擬
진동여파%격진기%조항측시%사단삼수법%자유변계모의
vibration and wave%isolators%impedance testing%four-end parameter method%free boundary simulation
隔振器的阻抗特性是船舶机电设备隔振系统设计与评估的重要输入参数。考虑到ISO标准及国标中对力传感器频响要求较高及边界支反力的影响，本文提出了基于纯加速度测量的隔振器阻抗测试方法。首先根据四端参数法推导了任意边界条件下隔振器的阻抗关系式，然后在准自由边界条件下通过加速度测量对某橡胶隔振器进行了阻抗测试，利用牛顿第二定律和加速度信号测量替代了力传感器实现力的测量。测试结果与理论计算结果吻合，验证了测试方法的有效性。
隔振器的阻抗特性是船舶機電設備隔振繫統設計與評估的重要輸入參數。攷慮到ISO標準及國標中對力傳感器頻響要求較高及邊界支反力的影響，本文提齣瞭基于純加速度測量的隔振器阻抗測試方法。首先根據四耑參數法推導瞭任意邊界條件下隔振器的阻抗關繫式，然後在準自由邊界條件下通過加速度測量對某橡膠隔振器進行瞭阻抗測試，利用牛頓第二定律和加速度信號測量替代瞭力傳感器實現力的測量。測試結果與理論計算結果吻閤，驗證瞭測試方法的有效性。
격진기적조항특성시선박궤전설비격진계통설계여평고적중요수입삼수。고필도ISO표준급국표중대력전감기빈향요구교고급변계지반력적영향，본문제출료기우순가속도측량적격진기조항측시방법。수선근거사단삼수법추도료임의변계조건하격진기적조항관계식，연후재준자유변계조건하통과가속도측량대모상효격진기진행료조항측시，이용우돈제이정률화가속도신호측량체대료력전감기실현력적측량。측시결과여이론계산결과문합，험증료측시방법적유효성。
Impedance characteristics of isolators are important input parameters in design and evaluation for isolation systems of ship's power plants. Taking into consideration of exact demand for frequency response of force sensor according to ISO and Chinese Standard and the effect of boundary forces in experiment, a method for isolator impedance testing based on acceleration measurement only is put out in this paper. Four-polar parameter equations are used to deduced the expressions of the isolator impedance under arbitrary boundary conditions. Then, impedance testing on a rubber isolator is carried out under quasi free boundary condition. The results from test match well with those from theoretical computation . Thus, the effectiveness of the pure acceleration testing method proposed in this paper is validated.
