被控參數 的英文怎麼說
中文拼音 [bèikòngshēnshǔ]
被控參數
英文
controlled variable-
Suction gas pressure goes up as the compressor run at the lower speed in the lower burthen, and this is beneficial to lower systems energy - consume. when the system is controlled by wvf, the discharge change of the evaporator is not linear ; the electronic expansion valve is adopted to regulate the system superheat degree, and the controlled object is parameter time varying, accordingly, the time varying controller should be adopted
在負荷較小時,壓縮機採用低速運轉,吸氣壓力升高,這對系統降低能耗是有利的;變頻控制時,蒸發器製冷劑流量的變化並非線性;系統中採用電子膨脹閥進行過熱度控制,被控對象具有參數時變的特性,相應地宜採用變結構的控制器。That means the controlled temperature al1ow waving in a range in a period. when the change of the temperature indoor is out of the range we enacted, the system begin to regulatc. compensate the windage last time leave behind } before decide the heatsupply parameter for the next time
即允許被控室內溫度在一段時間內存在一定幅度的波動,當室溫變化幅度超過設定值時系統開始調節,在確定下一時間段的供熱參數之前對上一時間段的遺留偏差在短時間內給予補償。This thesis introduces the working principle, craftwork requirement, modeling process, control strategies and the realization of lf refining furnance bottom blowing argon control system. through the study and analysis of bottom blowing argon process control system, the thesis discusses the mean neural network model of controlled object and the mathematical models of the exectors, pwm adjustable pressure controller and pcm adjustable flux controller according to the relevant liquid knowledge and relevant data, including design data, test data and running data. to begin with the craftwork reguirement of bottom blowing argon and the actual instance of the control system, it presents the strategies of fuzzy parameters self - adaptive pid control used in pressure difference inner loop and fuzzy plus pi compound control used in flux outer loop which are based on the above modeling in order to carry out the accurate control of argon flux
本文介紹了lf精煉爐底吹氬過程式控制制系統的工作原理、工藝要求、建模過程、控制策略以及控制系統的實現。通過對精煉爐底吹氬過程式控制制系統進行研究與分析,並根據流體力學的有關知識以及有關數據(其中包括設計數據、試驗數據和運行數據) ,建立起了被控對象的平均神經網路模型和執行機構(即pwm調壓器和pcm調流器)的數學模型。在此模型的基礎上,從底吹氬工藝要求和控制系統的實際情況出發,提出了壓差內環模糊參數自適應pid控制策略和流量外環模糊pi復合控制策略,以實現氬氣流量的精確控制。The essence of edid is to set up a normal behavior fuzzy sub collection a on the basis of watching the normal system transfer of the privilege process, and set up a fuzzy sub collection b with real time transfer array, then detect with the principle of minimum distance in fuzzy discern method the innovation point of this paper is : put forward the method of edid, can not only reduce efficiently false positive rate and false negative rate, also make real time intrusion detection to become possibility ; have independent and complete character database, according to the classification of monitoring program, design normal behavior and anomaly behavior etc., have raised the strongness of ids ; use tree type structure to preservation the character database, have saved greatly stock space ; in detection invade, carry out frequency prior principle, prior analysis and handling the behavior feature of high frequency in information table, have raised efficiency and the speed of detection, make real time intrusion detection to become possibility ; have at the same time realized anomaly intrusion detection and misuse intrusion detection, have remedied deficiency of unitary detection method
這種方法的實質是在監控特權進程的正常系統調用基礎上建立正常行為模糊子集a ,用檢測到的實時調用序列建立模糊子集b ,然後用模糊識別方法中的最小距離原則進行檢測。本文的創新點是:通過對特權進程的系統調用及參數序列的研究,提出了基於euclidean距離的入侵檢測方法edid ,不僅能有效降低漏報率和誤報率,而且使實時入侵檢測成為可能;設計有獨立而完整的特徵數據庫,根據被監控程序的類別,分別設計正常行為、異常行為等,提高了檢測系統的強健性和可伸縮性;特徵數據庫按樹型結構存儲,大大節省了存儲空間;在檢測入侵時,實行頻度優先原則,優先分析和處理信息表中的高頻度行為特徵,提高檢測的速度和效率,使實時入侵檢測成為可能;同時實現了異常入侵檢測和誤用入侵檢測,彌補了單一檢測方法的不足。In this paper, the mathematics model and simulation model of the passive landing gear shock absorber was built, and was verified by drop test. aimed at acquiring suitable efficiency diagrams, two simple semi - active control algorithms were designed. the mathematics model and simulation model of the semi - active landing gear shock absorber was built
在本文中,建立了被動控制起落架緩沖系統數學模型和模擬模型,並通過落震試驗對該模型進行參數校驗;以合適的功量圖為控制目標設計出兩種半主動簡單控制律,建立了半主動控制起落架緩沖器數學模型和模擬模型;通過數字模擬對這兩種控制方法進行了比較,認為半主動控制較被動控制有很大的優越性。The chosen controlled parameter must be single function of extraventricular temperature because extraventricular temperature affect immediately radiator ' s emitting heat, heat net supplying heat and user ' s heat load. but the sometime chosen controlled parameters all are ' t extraventricular temperature ' s single function
室外溫度的變化直接影響用戶熱負荷、散熱器散熱量、熱網供熱量的大小,所以選擇的被控參數應與室外溫度有單值函數關系,而以往所選的被控參數與室外溫度之間都不是單值函數關系。This makes it hard to tune the parameters of the fuzzy control system
為了保證溫室溫度模糊控制器的性能,需要根據被控對象的變化不斷調整其參數。Fuzzy control is a simple and practical control method that had been developed in recent years. it has some adaptive ability for process parameter changes, but its steady - state accuracy is unsatisfactory
模糊控制是近年來發展起來的一種簡單實用的控制方法,對被控過程參數變化有一定的適應能力,但它的穩態精度較差。The second is that for a complicated system, for example, with many loops as well as many controllers, it is very difficult to give the direct relation between the parameters of processes and that of controllers
這主要有以下幾方面原因:一是在工業環境下,對被控過程難以進行精確的數學描述。由於工業噪聲所表現出來的多樣性,最小二乘類等參數辨識方法的應用受到很大的限制。There are a lot of advantages of this control technology such as automatic to distinguish parameters of the controlled object, automatic to tune parameters of the controller, and adaptive to change with the process parameters, which make it become a perfect control technology
自適應控制技術是近些年發展的一種性能很好的實時控制技術,具有自動辨識被控對象參數、自動整定控制器參數、能夠適應被控過程參數變化等一系列優點,成為一種理想的控制技術。However, the artificial methods for tuning pid parameters are so far applied commonly regardless of in the domestic or overseas process control engineering practice, which cause the pid tuning job extremely time - consuming and can not assure of the best control system performances consequently, particularly for these time variant processes
然而,至今控制系統的pid參數整定工作無論是在國內還是在國外的控制工程實踐中,主要採用的還是人工整定法。這使得pid參數的整定工作不僅費時,而且難以保證控制系統性能最佳,尤其是對于被控對象特性隨工況發生變化的系統, pid參數人工整定法更不能滿足系統的要求。First, the indispensable parameters and the function specifications which need testing are given in the paper on the basis of the function specifications that are regulated in every kind of locomotive electric apparatus in repairing period issued by railway ministry. the arrangement method and testing operation mode of the testing system are introduced and the function demands of the control software are provided, too
根據鐵道部頒發的各型電力機車段修規程,分析並給出了機車電器測試系統需要測試的電器參數及其性能指標;然後提出了被測試電器的安裝方法與測試操作方式,以及控制軟體的功能要求。The result of long - term operation shows that the computer control system is practical and effective, it can run in the optimal state within a long duration to fully realize data collection and process, remote data transmission and vfvs constant injection control of pumps. it speeds up the automatic procedures of the seawater treatment process, really realizes the unmanned working, decreases the physical intensity to a large extent, improves the management, enhances the management level, avoids equipment wear down as much as possible, makes the seawater treatment efficient and lessens the cost of production
長期的運行結果表明,該計算機控制系統的實施切實有效,既成功實現了對被檢測參數的數據採集與處理、遠傳以及注水泵機組的變頻調速恆壓注水控制,又提高了系統的自動化程序,真正實現了無人值班作業,在很大程度上降低了工作人員的勞動強度,極大的改善了現場的管理狀況,提高了生產管理水平,且有效避免了設備損耗,提高了水處理效率,降低了生產成本。In the process of steel - making, killing oxygen by adding aluminum process is a controlled object whose parameters are distributed and non - linear, and its observed data are discrete. the key point of this process is model of killing oxygen by adding aluminum process
煉鋼生產中,定氧加鋁工藝的被控對象具有參數分佈、非線性、動態觀測數據離散等特徵,定氧加鋁模型的建立是該工藝的核心。A coke oven represents a kind of controlled object with a full spectrum of closely coupled factors, such as distributed parameters, no - linearity, time - dependent change and multi - variable features. among them, the discharge header pressure and fan suction are key parameters, and also constitute strongly coupled variables with very close inter - relation, which are fulfilled by the way of regulating coal - feeding and the rate of primary air supply in practice
焦爐是一個分佈參數,非線性、時變、多變量緊密耦合的被控對象,其中集氣管壓力和鼓風機吸力既是關鍵參數,又是具有緊密關系的強耦合變量,它們均是通過調節給煤量和一次送風量來實現控制的。In this paper, we study the temperature of resistor - furnace which is a main controlled parameter in the industrial object, and hardware and software are designed
本文對工業對象中主要的被控參數電阻爐爐溫進行研究,設計了硬體電路和軟體程序。The operation and regulation is a weak link of heating engineering. essential reason is lie in the choice of controlled parameter that is very important in heating system, because controlled parameter relates to quality of heat net operation and regulation
供熱系統的運行調節是供熱工程的薄弱環節,根本原因在於供熱系統中被控參數的選擇,被控參數的選擇在供熱系統的運行調節中至關重要,它關繫到熱網運行調節的好壞。And this algorithms have been proved to be valid by computer analogize for two different model. after a detailed analysis of the glass furnace, put award a method of disassemble multivariable control : the upper levels use fuzzy supervise control, provide reference signal for lower level ; the lower level select and use a modified self - regulating fuzzy controller or a double closed - loop controller for time - sluggish system
在分析窯爐特性的基礎上,以溫度系統為例,根據其被控參數多、大滯后、非線性等特點,提出分層分區的智能控制策略:上層採用模糊監督控制器,為下層提供參考信息,下層根據控制要求及被控對象特性分別採用了一種改進的自校正控制演算法和一種適合於滯后過程的雙環模糊控制器。Based on researching fuzzy control theory and design way of fuzzy controller, and acquainting cement manufacturing process, the author researched the parameters of producing process in detail, brought forward subjection function and fuzzy control rules list of cement kiln input and output parameters and designed fuzzy control imitation software by fuzzy control toolbox of matlab. applied the software to cement kiln imitating process, it has better control effect and definite significance
其次,作者還研究了模糊控制的基本理論和模糊控制器的設計方法,同時還了解了水泥生產工藝和操作過程,對水泥生產過程中的控制參數和被控參數作了進一步研究,提出了參數的隸屬函數,結合中控室操作員的經驗提出了水泥窯輸入、輸出參數之間的模糊控制規則表,然後利用matlab軟體中的模糊邏輯工具箱設計了模糊控制模擬系統,並設計了gui界面。The control software connects with pci driver to send order to the measurement system, in order to initialize the system and start collection. it will access the time domain data in ram and frequence domaim data in dsp through pci bus, finish data transfer automaticly, display the data in many ways such as graphicness and table, and store the data into harddisk at the same time
總控軟體與pci驅動程序掛鉤,向測試系統發命令,實現系統的初始化和啟動採集等動作,並通過pci總線讀取ram中的時域數據和dsp中的頻域數據,自動完成數據轉換,以圖形和表格等多種方式實時顯示被測參數,並在顯示的同時將數據存儲到硬盤中去。分享友人