传递函数分析 meaning in English
transfer function analysis
Examples
- This paper starts the research of the liquid floated pendulous accelerometer testing system according to the engineering . at first , this paper gives the brief introduction of the history and present status of accelerometer and its testing technology , the working principium and math model of the liquid floated pendu - lous accelerometer , and then , decides the binary width pulse force retrim loop as the design proposal of testing system , researches the transfer function of every part in the system emphasizly , analyses the stability of the whole accelerometer testing system from the angle of control theoretics by the open loop transfer function of system , and designed the correcting net , analyses the basal problems such as resolution , sampling restraint , precision and so on , designs the hardware testing circuits such as preamplification , band - pass filter , alternating amplifier , phase sensitive demodulatorn , pulse - width modulation , frequency scale circuit , moment current generator . finally , using the graphics program language labv - iew which is designed for testing field especially by ni accomplishes the solfware design of testing system , realized the testing functions
首先对加速度计及其测试技术的发展历史和现状,液浮摆式加速度计的工作原理和数学模型等作了简要的介绍,然后确定了以二元调宽脉冲再平衡测试回路为设计方案,并从控制理论的角度进行了分析,着重研究了系统中各部分的传递函数,利用系统开环传递函数分析了系统的稳定性,同时设计了系统的校正网络;分析了二元调宽脉冲再平衡测试回路的分辨率、采样约束以及测试精度等基本问题,并按照系统分析的结果设计了包括前置放大、带通滤波、交流放大、相敏解调、脉宽调制、频标电路以及力矩电流发生器等测试系统各部分硬件电路,验证了电路的正确性,最后按照测试系统的要求,采用了美国ni公司专为测试领域所开发的虚拟仪器工具? ? labview作为测试软件开发工具,利用该图形化编程语言完成了测试系统软件部分的设计,实现了测试功能。 - The system is compatible with the various different types a / d converters , carry out the functions of the vibration signal sampling , the saving of data file , the timely wave showing , the configuration table edit , the former data return and data analysis etc . the functions of signal analysis include the time field statistics analysis , the time field mutual analyzing , the frequency spectrum analyzing , the relevant analysis , the transmission function analysis , the demodulating analysis , and the short fourier transformation of the time and frequency field etc . experiments verify that the system carry out stably and credibility , various functions is achieved , has precise analyzing results , high calculating speed and high precision , the expected targets have been reached
该系统可以兼容多种不同型号的数据采集设备,实现了振动信号的采集、数据文件的存储、波形的实时显示、组态表编辑、历史数据回放与数据分析等功能。系统的信号分析功能包括时域统计分析、时域相关分析、频谱分析、相干分析、传递函数分析、解调分析以及时频分析中的短时傅立叶变换等。经试验验证表明,系统运行稳定可靠,各项功能工作正常,数据分析结果准确、运算速度快、精度高,达到了预期设计目的。 - ( 2 ) for linear systems with time - varying delays both in state and control , and subject to norm - bounded parameter uncertainties , the problems of robust stabilization and robust h control are studied and delay independent results are derived by constructing proper lyapunov function to deal with the time - delay , also by using riccati equations method and inequalities transformations to deal with the uncertainties . according to the transform function of the system , frequency domain method and time domain method are combined together to analyze the robust h control problem of the uncertain time - delay system
( 2 )研究了一类状态和控制同时具有时变时滞以及参数时变有界不确定性系统的时滞无关的鲁棒镇定及h控制问题，采用把时滞因素和不确定因素分开处理的思路，通过构造适当形式的lyapunov函数来处理时滞，采用不等式变换及riccati方程方法来处理不确定性，采用频域与时域相结合的方法根据系统的传递函数分析时滞不确定系统的鲁棒h控制问题。