摘要
研究了用速度响应完成以加速度为试验条件的振动环境试验,以及对速度信号进行数值微分的方法,分析了数值计算误差和采样参数之间的关系,编制了两输入两输出振动试验控制程序。以悬臂梁为试验对象,一个测点处用加速度传感器采集加速度响应信号,另一个测点处用激光测振仪采集速度响应信号,用速度和加速度联合控制完成给定加速度参考谱的随机振动试验。
This dissertation introduces how to finish the vibration environment test whose reference spectral density is defined by acceleration with velocity response. The way how to get acceleration responsewith velocity response by numerical differentiation is presented. The relationship between the calculating precision of numeric differential method and sampling parameters is analyzed emphatically. A two-input two-output random vibration environment test is performed with a cantilever beam to verify the proposed control method, the acceleration signal on one test point is measured by a acceleration sensor and the velocity signal on the other test point is measured by a laser vibrometer. A vibration environment test whose reference spectral density is defined by acceleration is finished with both acceleration response and velocity response.
出处
《振动．测试与诊断》
EI
CSCD
北大核心
2013年第S1期45-47,217-218,共5页
Journal of Vibration,Measurement & Diagnosis
基金
江苏高校优势学科建设工程资助项目
关键词
振动环境试验
闭环控制
非接触测量
MIMO
vibration environment test,closed-loop control,non-contact measurement,MIMO
