梯形調制 的英文怎麼說
中文拼音 [tīxíngdiàozhì]
梯形調制
英文
trapezium modulation-
Compared with the classical bp algorithm, robust adaptive bp algorithm possesses some advantages as following : ( 1 ) increasing the accuracy of the network training by means of using both the relative and absolute residual to adjust the weight values ; ( 2 ) improve the robustness and the network convergence rate through combining with the robust statistic technique by way of judging the values of the samples " relative residual to establish the energy function so that can suppress the effect on network training because of the samples with high noise disturbances ; ( 3 ) prevent entrapping into the local minima area and obtain the global optimal result owing to setting the learning rate to be the function of the errors and the error gradients when network is trained. the learning rate of the weights update change with the error values of the network adaptively so that can easily get rid of the disadvantage of the classical bp algorithm that is liable to entrap into the local minima areas
與基本bp演算法相比，本文提出的魯棒自適應bp演算法具有以下優點： （ 1 ）與魯棒統計技術相結合，通過訓練樣本相對偏差的大小，確定不同訓練樣本對能量函數的貢獻，來抑制含高噪聲干擾樣本對網路訓練的不良影響，從而增強訓練的魯棒性，提高網路訓練的收斂速度； （ 2 ）採用相對偏差和絕對偏差兩種偏差形式對權值進行調整，提高了網路的訓練精度； （ 3 ）在採用梯度下降演算法對權值進行調整的基礎上，通過將學習速率設為訓練誤差及誤差梯度的特殊函數，使學習速率依賴于網路訓練時誤差瞬時的變化而自適應的改變，從而可以克服基本bp演算法容易陷入局部極小區域的弊端，使訓練過程能夠很快的「跳出」局部極小區域而達到全局最優。Plc system is composed of manage computer, master device and i / o modules. programme software runs in windows - based manage computer system and it has many functions, such as hardware configuration, editing with ladder diagram, simulated running of control programs, communications with master device, and so on. this software is a necessary tool of editing control programs, debugging control programs and real monitoring for plc system designer
Plc系統由上位機、主控制器和i / o模塊等組成，編程軟體運行於上位機系統windows2000平臺，具有系統硬體配置、梯形圖程序編輯、控製程序模擬運行以及與主控制器通信等功能，是plc系統設計人員編制、編輯、調試plc控製程序以及實時監測現場運行狀況的必備工具。This disquisition aimed at plc reactive dispatch curve controller, associating the entire exploiting process, expounded in guiding ideology, control standard, function and structure design, software system design, analog experiment, fixing and debugging and so on, also part of flow schematic diagram ( the ladder chart was n ' t drawn because of too many network and length limit ). this design involves many subject such as power systenu automatic control microcomputer control and electroa during the design, we have read a great deal of concerned data, base on the sufficient investigation analysis and research, associating the practicality of huanren power plant, we introduced and exploited plc reactive dispatch curve controller in the first time
本文針對plc無功調度曲線控制器，結合整個研製過程，在設計指導思想、控制準則、性能設計、裝置構成設計、軟體系統設計等方面進行了闡述，並給出了部分程序流程簡圖（由於梯形圖網路數太多，受篇幅限制沒有給出） 。本設計涉及到電力系統、自動控制、微機控制、電子等多學科知識，在設計過程中，我們查閱了大量相關的資料，在充分調查、分析、研究的基礎上，結合桓仁發電廠實際情況，首次提出並研製出了plc無功調度曲線控制器。This machine is a kind of radial riveting machine, the machine adopted the advanced radial technology, and its movement path likes the 11 pieces of plum blossom s shape, and using the screw pole to ascend and descend the work bench the head part is fixed, and the t - slot of bench can fix the clamping apparatus available, the center hole of bench and axis are coaxial, the one - way adjusting valve of liquid current is effectively controlled riveting speed
Jm12 - c是液壓類中重型徑向鉚接機，除應用有第五代徑向鉚接技術外，該機加長了鉚接行程，該項參數由普通機型的30mm加至60mm ，可滿足長行程深孔內鉚釘鉚接的要求。工作臺，並具有夾具梯形槽，工作臺中心孔徑與主軸軸線同軸，可用於夾具定位。氣路加裝雙向調節閥，有效控制鉚接速度。The cross section of modulator electrodes we study is trapezoidal but not rectangular in common, so it is necessary to make an analysis of the effects of trapezoidal electrodes on the characteristics of coplanar waveguide
由於實際的電極橫截面形狀是梯形而非理想的矩形結構，研究梯形電極中間電極角度和地電極角度對調制器特徵參量影響是十分有必要的。In chapter four, problem about parameters of gpc on - line tuning in frame of satisfactory control is researched, and a satisfactory model for multi - parameters on - line tuning is defined, and proposed a formula based on grade conception and one - dimension searching method. it ' s shown that the system ' s performance can be improved by this approach
對多參數調整優化問題給出了滿意優化模型，並且對由此形成的多變量尋優問題引入了梯度的概念和一維搜索的方法給出了該多參數尋優問題求解迭代公式的杜十模糊btai與模糊約柬的浦意優化控制向量形式。Unlike inverters for general purpose, auxiliary inverters of subway vehicle have the characters of high power, wide range of high dc input voltage, entirely sealed electronic units and natural cooling. single pulse width modulation ( pwm ) technology is found to be optimal by comparing several different high power inverter technologies and is utilized in the 2 - channel staircase inverter discussed in this thesis
針對地鐵車輛輔助逆變電源的大功率、直流側輸入電壓高且變化范圍寬、輸出電壓穩定且波形質量高，電子部件全密封且要求自然冷卻的特點，分析比較了幾種大功率逆變器技術方案，選擇單邊脈寬調制階梯波合成逆變器為研究對象。In crystal growth experiment, aggas2 crystal was growen in special quartz ampoule by crucible descending method ( b - s method ). the equipments were used, which consist of a two - zone vertical growth furnace whose temperature gradient is tunable, a descending device with decelerating rate of 1 : 2000, a controlling system of electy and a temperature testing system using thermal couples
晶體生長實驗中，我們利用上下溫度梯度可調的二溫區管式生長爐， 1 2000減速比的旋轉下降系統，電氣控制系統和密集適時測溫系統等，在特殊形狀的石英生長安瓿中，採用坩堝下降法（ b - s法） ，以合成的aggas _ 2多晶原料進行晶體生長。The finite element method ( fe '. i ) is adopted to analyze the effects of the numbers of coil turns, current intensity and current frequency upon the rate of joule heat generation in details. the thermo - radiation analytical countermeasures of various types are adopted to carry out the numerical analysis of the effects of the crucible with different shapes and sizes and the blind holes with different depths opened in the tops of crucibles as well as coil positions upon the thermal field distribution whereby solving the main problem of field the thermo - field design of the induction - heating sic crystal growth system. a new combination idea of the thermo - field design obtained by means of the united design of the thermo - insulator and blind holes has been presented
採用有限元分析方法對線圈匝數、電流強度、電流頻率等對焦耳熱產生速率的影響進行了詳細的分析討論；採用不同的熱輻射分析策略，對不同坩堝形狀、坩堝頂部開設不同深度的盲孔以及線圈的位置等對熱場分佈的影響進行了數值分析，解決了感應加熱碳化硅晶體生長系統熱場設計的主要問題，提出了通過絕熱層與盲孔的聯合設計獲得所需熱場設計的思路，給出了根據軸向溫度梯度的波動對線圈位置實行動態調節以控制熱場的理論依據。And using the screw pole to ascend and descend the work bench the head part is fixed, and the t - slot of bench can fix the clamping apparatus available, the center hole of bench and axis are coaxial, the one - way adjusting valve of liquid current is effectively controlled riveting speed
立式徑向鉚接機鉚接機，除應用有國際先進的11瓣梅花徑向鉚接技術外，該機加大了工作臺面，並具有夾具梯形槽，工作臺中心孔徑與主軸軸線同軸，可用於夾具定位。液路加裝單向調節閥，有效控制鉚接速度，增加遠程卸荷裝置，有效降低油路噪音。In accordance withthe system requirement, choose the panasonic fp0 - c32t plc, distribute the i / oand construct the signal inputelectrocircuit and output load electrocircuit ; designthe plc control flow diagram and compile the trapezoid diagram, then debugthem ; designtheplc communicationprogram basedonlabview. servo control subsystem ensures the machining precision of notched impactspecimen
根據系統控制需要，選用松下fp0系列c32t可編程式控制制器，進行i / o分配，並搭建信號輸入電路、輸出負載電路;設計plc系統控制流程圖，進而在fpwingr編程環境上編制梯形圖、調試;基於labview設計plc與外部通信的程序。分享友人