控機改頻 的英文怎麼說
中文拼音 [kòngjīgǎibīn]
控機改頻
英文
xd-2d-
The company ' s main business : sheet metal equipment research and manufacturing ; automative system integration ; professional trading laser cutting equipment, 、 maintenance 、 accessories ; maintenance of the world ' s brand servo amplifier inverter 、 plc ； smt 、 generate electricity 、 manufacture industry pcb ; at home and abroad of cnc machine tools, upgrades, accessories ， electrical and mechanical design
本公司主要經營：板金設備開發製造；自動化系統集成；專業激光切割設備買賣、維修、配件；維修世界各品牌伺服放大器、變頻器、 plc ；各類數控印刷、 smt 、發電、製造行業電路板；國內外數控機床改造、升級、配件、機電設計等。The study has completed the design of two - phase inverter and made up of the two - phase inverter - motor system for experimental use it is a variable frequency adjustable speed system with a open - loop control of rotational speed, which consists of voltage - controlled oscillator circulating assign device inverter circuit and two - phase induction motor a accurate mathematical model is set based on the whole system, and simulator program of dynamic and steady condition is established, which is used to calculate the dynamic and steady performance by kron and symmetrical coordinate converter by simulator calculation and experimental research with specific parameter of the system, a comparison is made between predicted and experimental characteristics, experimental measurements are shown to compare closely with corresponding theoretical result it is compared with some variable frequency adjus table speed system comprising inverter and single - phase induction motor from the system efficiency torque pulsation and the effect of two - phase inverter capacitance based on the conclusion, harmonic cancellation pulse width modulation control of a two - phase inverter - fed induction - motor drive system is researched, which cancelled the low harmonic and improve the system performance
通過對電機的kron變換和對稱分量變換，建立了系統較精確的數學模型，編制了系統動態及穩態運行的模擬計算程序分別計算系統的動態和穩態性能。通過對系統的具體參數進行了模擬運算和實驗研究，實驗和模擬結果進行比較，說明實驗和理論較為一致，並從系統效率、轉矩脈動及兩相逆變器電容的影響等方面與各種逆變器和單相異步電動機組成的變頻調速系統加以比較。在此基礎上，對兩相逆變器供電-異步電動機系統使用諧波抑制pwm控制進行了研究，由於減少了低次諧波，改善了系統性能。Abstract : this paper discusses the method of adjustable speed driving with bi - directional power transferring converter for motors used in draining and irrigating pumps, a control strategy is proposed to realize super / hyper synchronous speed running with ac - ac converter, and a design for the driver is given based on 16 bit micro - controller
文摘:針對農用電力排灌站電機調速改造問題，討論了雙饋調速實施方案，提出了採用交交變頻實現超/低同步調速的一種控制方法，給出了以高性能16位單片機為核心的雙饋調速控制系統軟硬體設計The article takes the lifting water controller by the radio frequency card in use for pumping well as an example, expounds its working principle, the function, some problems in the promoted application and suggestions
文章以射頻卡機井取水控制器為例，闡述了其工作原理、功能及其在推廣應用中存在的問題及改進建議。Hi this paper, a common air conditioner simulation program which has been verified by experiments results before has been improved. comparing the calculation and the experiment results at the same state indicates the accuracy and reliability of the improved mathematics model
本文首先對經過了實驗驗證的定頻空調器數學模型進行了改進，用空氣焓差法對樣機進行了實驗，提出了對空調器變頻控制器的設計建議。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。Abstract : a new current feedback control method of brushless dc motor ( bldcm ) is introduced in this paper, which combines the traditional overlap method with the fixed - frequency sampling current control method. it both stabilizes the work frequency of the inverter, and improves the commutative performance of bldcm. and it is verified by the result of the simulation
文摘:提出一種永磁無刷直流電機電流反饋新的控制方法，即採用常規重疊換相法與定頻采樣電流控制相結合的方法，既能穩定逆變器的工作頻率，又改善了永磁無刷直流電機的換相性能，利用模擬對提出的方法進行了驗證。The system can generate three - phase spwm pulses and has following characters : the range of modulation frequency is from 0 khz to 4 khz. and can be divided to 7 classes to control. the carrier frequency may be selected up to 24 khz, and can be divided to 8 classes to control ; rotational frequency is defined to 16 bits
該系統能產生三相六路正弦脈寬調制（ spwm ）波形;調制頻率范圍為0 4khz ，分7級控制; 16位的速度控制解析度;載波頻率分8級控制，最高可達24khz ;系統介面兼容intel系列和motorola系列單片機;該系統控制簡單、精確，易修改，可現場編程;同時具有脈沖延時小、最小脈沖刪除、過壓和過流保護功能等特點，可應用於pwm變頻調速系統的全數字化控制。An engineer case is introduced, which is about " the reconstruction of high voltage fan ' s speed - adjusting by frequency conversion and the design of plc ( programmable logic controller ) control system in shui cheng iron and steel company ". in this project, an advanced controlling technology, based on the method in this paper, is used to realize the closed loop control of discharge header pressure of two coke ovens
介紹「水鋼煤焦化公司鼓風機高壓變頻調速及系統plc控制改造」的工程概況，對煤氣鼓風機採用先進的變頻調速技術和計算機控制技術進行改造，實現對兩座焦爐集氣管壓力自動調節的閉環控制功能，既滿足了煤氣量的自動調節的要求，又避免了煤氣鼓風機出口閥門的節流調節，節能效果相當可觀。Automatic control : the machine is programmable to run subject to the technique requirements and controlled by a set of equipment like plc, touch - screen monitor, frequency converter, dynamic braking, air - powered or hydraulic system programs are modifiable with individualized interface
自動化人機界面控制：通過plc ，觸摸屏、變頻器控制、能耗制動、氣動或液動系統，機器可按工藝要求設計相應的工作程序，並按所設定的程序自動運行，採用先進的應用程序，可以更方便的修改程序。In the unbender region ' s technology reconstruction item of the chongganzhongban factory, the profibus was applied in the basal automation control system to link the 11 simovert masterdrives control equipments with 3 long - distance stations
重鋼中板廠矯直機區域技術改造項目中，在基礎自動化控制系統中採用了profibus現場總線，將11臺交流變頻調速控制裝置和三個遠程站連接起來。When there is random error in input data, if position - keeping plan is applied, thrusters will change working status in high frequency that will lead to sever thrust wear and energy waste
當輸入存在隨機誤差的情況下，採用常規的定點定位控制方法會導致推進器頻繁改變狀態，造成不必要的機械磨損，浪費很大的能量。The tap - changer is made with solid state relay as its working mechanism and controlled by microprocessor. this switch has totally cancelled the mechanical drive organization, by the microprocessor according to the voltage of second side microprocessor decide the working condition of solid state rely, high regulation speed, need not transition resistor, rush current is low. operating frequently ; there is no electric arc to produce, can put in the fuel tank of the voltage transformer directly ; the structure is simple, the fabrication cost is low, benefit and use widely among the voltages transformer of distribution
其中的有載調壓分接開關，它是一種完全由固態繼電器作為分接開關執行機構，由單片機控制的有載自動調壓的變壓器分接開關。該開關完全取消了機械傳動機構，由單片機根據變壓器二次側電壓的高低，決定與變壓器各分接頭聯接的固態繼電器的工作狀態。調節速度快，改變分接頭時不需過渡電阻，沖擊電流小，可頻繁操作；無電弧產生，可以直接放在變壓器油箱中；結構簡單，造價低，便於在配電變壓器中推廣使用。Experimental research shows that, the designed main mechanism is reasonable ; swimming velocity varies with the frequency exerted on ; steering motion can by realized by changing the frequency f, and f2 of control power which exerts on two pzt. finally
實驗結果表明： （ 1 ）液體中微機器人的主體結構設計是合理的； （ 2 ）通過改變電源頻率可控制微機器人的泳動速度。We apply fuzzy control theory to active control over engine body vibration, design fuzzy control system which combines intelligent control with feedback control. this control strategy mends the flaw of complexity, nonlinear and uncertainty when we use traditional control method. by measuring rotate speed and vibration speed of i. c
在主動控制的基礎上，採用了模糊控制的演算法，設計了內燃機整機振動模糊控制器，改進了傳統控制方法在處理振動復雜性、非線性和不確定性等方面的缺陷，通過測量內燃機轉速和內燃機整機振動速度信號，動態地改變動力減振器的剛度，使減振器的固有頻率跟隨內燃機整機振動激勵頻率的變化，達到降低內燃機振動的目的。That produced many problems as follows : difficult to balance the working condition of the individual compressor ; difficult to realize the accurate control to the temperature of cold shed ; easy to hurt the life of the compressor when the environment temperature is generously changed which will trigger the frequency start of the compressor
由此造成許多顯而易見的問題：難于調整平衡製冷並聯機組中各製冷機組的協同工作狀態；不易對冷庫溫度進行精確控制；環境溫度發生較大改變時，容易引起壓縮機的頻繁啟動，對壓縮的機壽命造成極大損害。Traditional control method over body vibration - passive control only can be adapted to single frequency of vibration, which can not meet the requirement of broad frequency band of body vibration. on the other hand, active control over body vibration can adjust certain parameter of control system to get adapted to the change of i. c. engine body vibration, so it is able to reach better control effect
傳統的整機振動控制方法被動控制只能適用於單一頻率的振動，無法滿足整機寬頻帶振動的要求；而主動控制則可以通過外界能量主動改變控制系統的某些參數來適應內燃機整機振動的變化，因此能達到更好的減振效果。Other enhancements include the addition of a color zoom camera, adoption of a different frequency band for the control / video link, a new antenna, a more ergonomic handheld controller, a daylight - readable display
其它改進包括：增加一套彩色變焦距攝像機；控制、視頻迴路分別採用不同頻帶；新型天線；更符合人機工程的手動控制器以及白天易讀的顯示器。In this paper, two 50t / h coal - fired boilers " burning control system of 26 # heating station was studied as its thesis, the primary pid controller was improved as its purpose, fuzzy control theory developed rapidly at present was applied as its means. the design scheme is that controlling transducers change rotate speed of supplying coal electromotor, fan, and blower using 8051 micro - controller. it realized computer control of burning process
本文以26 ~ #供熱站的2臺50t / h燃煤鍋爐的燃燒控制為課題，以改進原有pid控制為目的，以當前發展比較迅速的模糊控制理論為手段，提出了採用8051單片機控制變頻器改變給煤機、引風機和送風機轉速的設計方案，實現了燃燒過程的計算機控制。The factors which affect load frequency characteristics are dissected in this thesis. frequency characteristics of constant revolution controlled load 、 synchronous motor dragged load 、 asynchronous motor dragged load and their effect to dynamic frequency characteristics are analysed. conclusion is reached as : increasing the efficiency of asynchronous motor can recede its slip and improve dynamic frequency characteristics
論文深入分析了影響負荷頻率特性的因素，分析了恆轉速控制工具機、同步機拖動工具機以及異步機拖動工具機的頻率特性和它們分別對系統動態頻率過程的影響，得出了恆轉速控制工具機對系統動態頻率不利；提高異步機的效率可降低其轉差率，從而改善系統動態頻率特性的結論。分享友人