ultra-low-frequency meaning in Chinese
特低频
Examples
- In chapter 5 , the ultra - low - frequency vibration calibration system is developed
第五章具体实现了超低频振动校准系统。 - Design of the power amplifier for ultra - low - frequency vibrator calibration system
用于超低频振动校准系统的低失真度功率放大器的设计 - In chapter 3 , the mechanism of test table waveform distortion generated by factors of ultra - low - frequency standard vibrator is studies systematically
第三章对超低频标准振动台的台面波形失真机理进行了系统全面的分析。 - These factors include the nonlinearity of suspension spring , the nonlinearity of damping force and the nonlinearity of driving force , etc , in which suspension spring and damping force are main factors that influence the distortion of ultra - low - frequency vibrator
影响振动台台面波形失真的因素有：乳胶管弹簧的非线性、阻尼力的非线性、驱动力的非线性等，其中，弹簧和阻尼力的非线性是影响振动台超低频失真度的主要因素。 - Based on the discussion of the nonlinearity of the vibrator , the mathematic model of ultra - low - frequency vibrator is established . then , on the basis of the ziegler - nichols pid controller , pid control parameters are modified according to the control requirements of object , and the computer simulation is done . finally , low - frequency feedback system is built up , which solves the problem of high distortion of the output of vibrator under ultra - low frequency
从分析标准振动台在超低频时的非线性因素入手，建立了超低频标准振动台的数学模型；然后在zieglernichols法设计pid的基础上，根据控制对象的性能要求修正了pid参数，并作了仿真研究；最后设计出低频反馈系统，解决了振动台超低频失真度较大的问题。