program amplifier 中文意思是什麼
-
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
首先對加速度計及其測試技術的發展歷史和現狀，液浮擺式加速度計的工作原理和數學模型等作了簡要的介紹，然後確定了以二元調寬脈沖再平衡測試迴路為設計方案，並從控制理論的角度進行了分析，著重研究了系統中各部分的傳遞函數，利用系統開環傳遞函數分析了系統的穩定性，同時設計了系統的校正網路;分析了二元調寬脈沖再平衡測試迴路的解析度、采樣約束以及測試精度等基本問題，並按照系統分析的結果設計了包括前置放大、帶通濾波、交流放大、相敏解調、脈寬調制、頻標電路以及力矩電流發生器等測試系統各部分硬體電路，驗證了電路的正確性，最後按照測試系統的要求，採用了美國ni公司專為測試領域所開發的虛擬儀器工具? ? labview作為測試軟體開發工具，利用該圖形化編程語言完成了測試系統軟體部分的設計，實現了測試功能。 -
The interpolate technology just like a " ruler ", the resolving power of the " ruler " affect that the sampling points are arrayed correctly on time axis, and is determined by the multiple of the double slope integral amplifier. so it is core in the whole project. the project apply the complicated program logical device ( cpld )
內插技術的應用使得隨機采樣理論能夠得以實現，內插技術相當于測量用的「尺子」 ， 「尺子」最小分辨能力決定了最後采樣點重新在時間軸上位置排列的真實可靠程度，這里尺子的最小分辨能力是由雙斜率積分時間擴展器放大倍數決定的，所以說該模擬充放電放大電路在整個方案中是個很關鍵的部分。 -
Under consideration of the effects of the life time of nd : yag lower level on extracted energy from amplifier, a numerical model and calculation program incorporated the effects of the pulse width on amplifier energy extraction is proposed. the calculated results are compared with the experimental data of a slab mopa dpl system setup previously and then the model is modified according to experimental results
考慮到nd ： yag激光下能級壽對放大器能量提取的影響，建立了脈寬對放大器能量提取影響的數值計算模型及程序，計算結果與已建立的板條mopadpl系統的實驗數據進行了比對並對程序進行了修正，提高了程序的可靠性。 -
3. build the system of collecting the stress of er fluids, which consists of amplifier a / d transform card and the executed program
製作了由信號放大電路、數模轉化卡、採集程序組成的電流變液應力實時採集系統。 -
Turn on the amplifier and select the program source
打開放大器電源，選擇節目信號源。 -
Make sure the program source selector on the amplifier is set to the proper source
確認放大器的節目信號源選擇器是否已設定在適當的信號源。 -
First, turn down the volume on the amplifier. the volume should be set to minimum before you begin playing the program source
首先，請轉小放大器上的音量。在開始播放節目信號源之前，必須把音量設定到最小。 -
To compare with transistor ( complete solid - state ) high - frequency linear power amplifier, there are some disadvantages : bad stability and reliability, low efficiency, high cost for operating, huge cabinet, heavy maintenance work load, low security for high - voltage electricity offering, and to ensure the continuance of tv program, the transmitter must be operating with main frame and spare frame
它們與晶體管（全固態）高頻線性功率放大器相比，存在著穩定性及可靠性差、效率低、運行費用高、發射機體積大、日常維護工作量大、高壓供電不安全、必須採用主機和備機的運行方式來確保電視節目不停播等缺點。 -
Through analyzing strata ' s absorbtion and attenuation, the specialty of ssf in system - one ( two ) and 24 - bit a z a / d, the scheme to improve the data acquisition system is brought forward including the design of multiple differential spectrum equilibrium filter ( mdsef ) and program control amplifier
通過詳細分析地層的吸收衰減特性， system - one （ two ）頻譜整形濾波器及24位a d的特點，對現有採集系統提出了改進方案。其中包括對多級微分頻譜均衡濾波器的理論設計，程式控制型前置放大器的理論分析與設計。 -
A new type program - controlled signal amplifier design and its application
一種新型程式控制信號放大器設計及其應用 -
A way of controlling the voice volume in a wide range with program - control amplifier, the hardware circuit and constructing method of software are given
摘要採用程式控制放大器對音量進行寬?圍控制，提供了具體硬體電路並指出了軟體構成方法。 -
Simplified theoretical model describing mof raman amplifier has been builded on our own, and simulation program has also been developed. the effects of gain and noise figure of mof raman amplifier with
分析了泵浦方式和損耗對放大器增益和噪聲特性的影響，並對其增益飽和特性進行了研究。
分享友人