CAJ | 학술논문

作动器是振动主动控制系统中的重要部件，它的选择将对振动主动控制系统的控制效果具有重大的影响。对一种微型共振音响作动器的响应幅值线性度、响应相移线性度和在刚柔性基础上的频响函数曲线进行了实验研究，并基于 Lab‐VIEW平台对实验的结果进行处理分析，最后对研究结果进行了详细的总结。结果表明：1）在不同频率下，共振音响的功放大小是不一样的。在0～0．3V各频率下，驱动器输出的力响应幅值大小是随着输入幅值呈线性变化的，在大于0．3V的区间，是呈非线性变化的。2）在同一输入电压幅值的情况下，响应相移（相位差）随着频率的增大而减小。3）在300 Hz后输出的响应幅值趋于稳定，约为2N。
작동기시진동주동공제계통중적중요부건，타적선택장대진동주동공제계통적공제효과구유중대적영향。대일충미형공진음향작동기적향응폭치선성도、향응상이선성도화재강유성기출상적빈향함수곡선진행료실험연구，병기우 Lab‐VIEW평태대실험적결과진행처리분석，최후대연구결과진행료상세적총결。결과표명：1）재불동빈솔하，공진음향적공방대소시불일양적。재0～0．3V각빈솔하，구동기수출적력향응폭치대소시수착수입폭치정선성변화적，재대우0．3V적구간，시정비선성변화적。2）재동일수입전압폭치적정황하，향응상이（상위차）수착빈솔적증대이감소。3）재300 Hz후수출적향응폭치추우은정，약위2N。
Actuators are important component in active vibration control system ,the choice of which is of significant influence on the effectiveness of the w hole active vibration control system .In this paper ,a type of micro vibration speak‐er actuator’s characteristics was studied .The linearity of the amplitude and the phase in response as well as the FRF curve based on the rigid/flexible foundation w ere show ed in the paper .Besides ,the data processing of result has been done based on the LabVIEW .Finally ,the paper made some useful conclusions of the mini vibration speaker ’s in detail . The result shows :1) the performance of its power amplifier was different in the case of different frequency .The ampli‐tude in response changed linearly along with the amplitude of sinusoidal voltage ranging from 0 to 0 .3 V in various frequencies ,which changed nonlinearly when the voltage was greater than 0 .3 V .2) When the voltage was constant ,the phase difference was getting small while the frequency was getting high .3) The amplitude in response was getting con‐stant when the frequency was greater than 300 Hz .The constant amplitude in response was 2 N .