pressure frequency response 中文意思是什麼
pressure frequency response
解釋
聲壓頻率響應-
Under the condition of knowing the mass, stiffness, damping and the real vibration response of stem, the propeller pressure impulses of blade frequency are deduced, these belong to structure dynamics problem that is loading identification problem
摘要在已知船舶的質量、剛度、阻尼以及實測尾端振動速度的條件下，反推出螺旋槳葉頻激振力。 -
Experiment results suggest that the response distortion induced by the sealed pressure case appears in the mid and high frequency area
實驗結果揭示，由高壓密封艙引起的頻響變異發生在中高頻區段。 -
There is difference frequency measurement requirement for every part of pid regulating, difference between dynamic quality and static quality in response time and accuracy. according to these, it use the interrupt functions and high - speed counter of the simens s7 - 200 plc cpu226 basic unit and some peripheral circuit to measure frequency ; in software designed, the procedure frame of hydraulic - turbine governor and disperse process of parallel pid are analyzed, an improved pid algorithm is adopted to realize a pid regulation mode with variable structure and parameters ; the mechanical liquid - pressure system of the hydraulic - turbine governor is with electric - hydraulic converter unit of step motor. according to the drive character of five phase of response step motor, a variable frequency regulated voltage driver unit is designed in order to realize interface between plc and driver of step motor
本文利用s7 - 200plc自身的特點設計了頻率測量單元，根據pid調節各個環節的特點，以及調速器動態特性、靜態特性對頻率測量的實時性和精度要求的不同，利用s7 - 200plc基本單元中內置的高速計數器以及相應的外圍放大整形、分頻電路，實現了水輪發電機組頻率的測量；在軟體上，對微機調速器的整個程序框架、並聯pid的離散化過程進行了分析，選用改進的pid演算法實現了變參數、變結構的pid調節模式；調速器的機械液壓隨動系統具有步進電機電液轉換元件，採用五相反應式步進電機，根據其驅動特性設計了變頻調壓驅動器，實現plc與步進電機驅動器之間數字介面。 -
Data of response of three high - pressure transducers are acquired respectively with effect of gas - shock tube and quick - opening valve. dynamic characters of transducers are known fully because of complementarity of data when transducers are calibrated at different frequency bands and pressure ranges. characteristic of excitation signal and its influence for modeling are discussed in this paper
將三種高壓傳感器在氣體激波管和快速閥門上分別得到激勵響應的數據，根據兩者所能校準的頻率段和壓力范圍不同，利用數據的互補性，可以對傳感器的動態特性有全局的了解。 -
The basic signals in the projectile test are dynamic signals such as high initial speed, high chamber pressure, high frequency response, high impact, high temperature measurand. so, the test and measurement system should have more channels, the signals are easy to be obtained, and no matter the measurand it is, the test and measurement plateau should be integrated instantly
彈丸測試的基本信號是高初速、高膛壓、高頻響、高過載、高沖擊、高溫等諸多動態量的信號，這要求測試系統通道多、捕捉動態信號容易、搭建針對不同被測信號的測試平臺快捷。 -
First, the dynamic characteristics of pipe is simulated, the influence to waterhammer which is brought by the flow area of the valve, response time, the length of the pipe before and after the valve, the hydraulic pressure fluctuating in the trunk, and the high frequency pressure fluctuating in combustion chamber is analysed
首先對管道動態特性進行了模擬，分析了閥門過流面積、閥門作動時間、閥門前後管道的長度、貯箱壓力波動以及燃燒室壓力高頻振蕩等對管道動態特性的影響。 -
Pressure frequency response of microphone
傳聲器聲壓頻率響應 -
Currently most domestic break - test - plateform adopt the liquid - pressure - servo technique, which possesses the advantages of higher frequency - response and higher controlling exactness, but in the same time, the disadvantages of higher cost, variation of function with the change of oil viscousness produced by the fluctuation of temperature. moreover, the liquid - pressure system is sensitive to the pollution of oil, so it is necessary to take protective and filtrating steps
目前，國內的制動器試驗臺大多採用的是液壓伺服控制，這種控制具有響應頻率高、控制精度高等優點，主要缺點是系統成本高、油液粘度隨溫度變化引起工作性能的變化、且液壓系統對油液的污染比較敏感，必須要有良好的保護和過濾措施。 -
The other method, air - pressure controlling has advantages of lower cost, free from pollution and strong adaptability, etc, and deficiencies in lower frequency - response, greater noise
氣壓控制採用空氣為介質具有系統價格低廉、無污染、適應性強等優點，主要缺點是系統響應頻率低、噪聲較大。 -
If air - pressure controlling can satisfy the frequency response test, it will meet the designing demands of customs and its air - pressure controlling method in our system
若氣壓控制能夠滿足測試對系統響應頻率的要求，就達到了用戶對設計的要求，而且系統價廉，市場潛力很大。 -
Abstract : after the concept of the acoustic transfer has been explained, a method on the basis of the test results to solve the acoustic transfer is presented, that is to slove the system of linear equations about the acoustic transfers based on measurement of frequency response between exciting force and velocity, exciting force and the point pressure in cavities
文摘:闡述了低頻腔體聲場的聲傳遞函數的概念，提出了一種實驗求解聲傳遞函數的方法，即在腔體壁面各測點的力與速度、腔內關鍵位置力與聲壓之間頻響函數測量的基礎上，求解聲傳遞函數的線性方程組。 -
Motion - picture sound reproduction, frequency response of sound pressure level ; measurement
影片的聲音重放.聲壓級的頻率響應.測量 -
In experimental, static response and frequency response of coupling acoustic / vibration optic fiber sensor have been analyzed. the results indicate that the response of the sensor to static pressure has high sensitivity. because the resonant frequency of different materials and structure is different, the sensor has maximum sensitivity in specific frequency
試驗研究中，對耦合型聲振動光纖傳感器的靜態響應特性和頻率響應特性進行了試驗分析，分析結果表明該類型傳感器對應變的響應非常靈敏，而對頻率的響應則由於材料及結構本身的共振頻率的差異有不同的峰值響應頻率。 -
Research on frequency response of the transmission line during the measurement of transient pressure
瞬態壓力測量中傳壓管道頻率特性分析
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