open circuit working 中文意思是什麼
open circuit working
解釋
開路工作方式-
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 abs ’ mainframe can get train ’ s velocity and acceleration from the velocity sensors, and then accomplishes some certain braking actions in term of them. but velocity sensors are easier damaged because of its special installing position and working environment. the mainframe of abs only can diagnose some simple faults, for example, the short circuit and open circuit
其中速度傳感器是防滑器正常制動的關鍵部件，但是轉速傳感器在工作時安裝位置比較特殊，工作環境惡劣，容易受到腐蝕、碰撞等損傷，而防滑器主機通常僅能對轉速傳感器的短路或斷路故障做出診斷，對轉速傳感器發生的其他故障難以識別，這樣就容易在列車運行時引發防滑器誤動作，甚至導致事故發生。 -
This dissertation delivers ecu hardware design scheme and discusses its feasibility ; designs ecu hardware circuit based on mcu, including ecu input and output signal processing channel, and the emigration of c / os embedded real time operating system on mcu lpc2292 ; designs fuel injection control project software procedure, and simulate it. it implements the open loop control of air fuel ratio under part of the motor working condition
在充分進行可行性論證的基礎上，完善了ecu的硬體設計總體方案;設計了基於單片機的ecu硬體單元電路，包括ecu的輸入、輸出信號處理通道以及c / os嵌入式實時操作系統在lpc2292單片機上的移植;設計了燃油噴射控制項目的軟體流程;最後通過模擬模擬，實現了發動機部分工況下的空燃比的開環控制目標。 -
Based on the general and flexibility of the system, it completes the measure of open circuit voltage and short circuit automatically, and data transfer. it can save time and manpower, increases the productivity and improves the working condition
基於系統的通用性和靈活性，該系統可精確可靠地自動完成電池開路電壓、瞬間短路電流的測試，數據傳輸，節約了相當的時間和人力，不僅提高了勞動生產率，而且大大地降低了工作人員的勞動強度。
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