main feedback loop 中文意思是什麼
main feedback loop
解釋
主反饋迴路-
The main research contents are as follows. 1 ) the characteristics of semi - process industry based on make - to - order are studied, which means that the purchase tune is long while the due date is short, the working procedures are successive and discontinuous. then the general structure of production system based on make - to - order mode in semi - process industry is put forward, which includes estimate of the dynamic finite resources, evaluation of the order based on rough capability balance, material requirement planning, production plan, order tracing, collection and feedback of the local data etc. they all together form an integrated and closed loop system as a whole
研究的內容主要包括： 1 ）研究了半流程製造業面向訂單生產模式具有的采購期長、交貨期短和工序連續但工序間可間斷的特點，並基於此提出了適應半流程製造業面向訂單生產的系統總體結構，其主要內容包括動態有限資源能力評價、基於初能力平衡的訂單評估、物料需求計劃和生產作業計劃、以及訂單跟蹤和現場數據的採集和反饋等，它們在總體上形成了一個集成的和閉環的系統。 -
The design of force feedback loop is emphasized on the base of theory analysis. then proportional - integral controller and lag - lead compensator are designed to improve dynamic performance of this kind of gyro. the main work includes optimizing parameters and system simulation
用matlab分析了陀螺本體傳遞函數的波德圖，然後通過採用比例-積分控制和遲后-超前校正及參數優化、系統模擬，使陀螺系統的固有頻率得到顯著提高。 -
Secondly, the main stuctures of the software and hardware parts of the control system are introduced. principles and realization of the main functional blocks of these two parts are illuminated. on the hardware of the system, parts of control circuit and the design and debugging of peripheral circuits are discussed thoroughly. based on the hardware circuit, the software is programmed with assembly language. dual close loop vector control weth feedback of speed and current are realized. the flow charts of main programme and pwm interrupt service routines are given. the important control strategies of vector control pmsm such as current sensint and scaling, speed sensing and scaling, bector co - ordinate transformation, generation of sine and cosine, pi regulators, svpwm vector modulation and so on are all accomplished in the pwm interrupt sevice routines. in order to unite all the variables in the programme, scaling is used
硬體方面主要論述了控制電路各部分及外圍輔助電路的設計和調試。在硬體的基礎上，軟體採用匯編語言編程，實現了轉速和電流雙閉環矢量控制。給出了系統主程序和pwm下溢中斷處理程序流程圖， pmsm矢量控制的主要控制策略如電流采樣與定標、速度采樣與定標、矢量坐標變換、 sin和cos值生成、 pi調節、 svpwm波形生成等都是在pwm下溢中斷服務子程序中完成的。 -
The main contribution of the thesis is seen as follows : aiming at the fault with slow speed and high power dissipation of the conventional phase - frequency detector, a high speed and low power dissipation phase - frequency detector is designed by modifying the structure of the single phase lock dynamic d flip - flop and adding the delay cell in the feedback loop to eliminate the phase detector ’ s dead zone effectively
論文的主要貢獻為以下幾個方面: 1 .針對傳統鑒頻鑒相器速度慢、功耗高的缺點，改進了單相時鐘動態d觸發器的結構，設計出了一種高速低功耗的鑒頻鑒相器，在反饋迴路上加入延遲單元，能有效的消除鑒相死區。 -
This paper analyses the type, function and characteristics of usual proportional control valves and raises a new modificative version in the light of their drawback. that is, basing on the principle of flow amplification and electrical feedback and throughout calculation and analysis on flow closed loop control and pressure flow combination., determination of the minimum controlled pressure difference as well as flow controlling range and structure of main valve and research of the dynamic and static characteristic, the paper puts forward control principle of " flow - load pressure change - displacement revision " and pressure / flow double closed loop, and further expounds that using a proportional controller and a electric mechanical transducer can separately serve the control function of pressure or flow as well as flow pressure combination
本論文分析了目前常用比例閥的類型、功能、特性，並針對其不足提出新的改進方案，即：以流量放大，電反饋兩個原理為基礎，通過對流量閉環控制及壓力流量復合的計算分析、確定上最小控制壓差及流量控制范圍，確定主閥結構、功能特性研究等，提出了「流量? ?負載壓力變化? ?位移修正」的控制原理和壓力流量雙閉環控制原理，並進一步論述了利用一個比例控制器和一個「電?機械轉換器」就可完成獨立的壓力或流量控制功能以及流量壓力復合控制功能。
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