狂野欧美性猛交xxxxx视频,欧美xo影院,色yeye免费人成网站在线观看

MeanS

1MHz換能器驅(qū)動電路的設(shè)計

超聲波換能器作為一種實用的檢測手段，能實現(xiàn)聲波所攜帶的信息和電能之間轉(zhuǎn)換。它的性能優(yōu)良，價格低廉，操作方便，易于調(diào)試，因此在工農(nóng)業(yè)生產(chǎn)中發(fā)揮著重要的作用。但目前換能器驅(qū)動電路的發(fā)射頻率多為40 kHz，本文針對1 MHz的超聲波換能器電路進(jìn)行了設(shè)計，主要介紹了它的發(fā)射驅(qū)動電路和接收驅(qū)動電路的設(shè)計方案，并對它們的功能進(jìn)行了詳細(xì)地說明。最后搭建實驗平臺，并對電路的輸入、輸出模塊進(jìn)行了測試。實驗結(jié)果表明，換能器電路運(yùn)行良好，可以為超聲波高精度測量領(lǐng)域的應(yīng)用提供參考。As a practical MeanS of detection, ultrasonic transducer can realize the conversion between theinformation carried by sound wave and electric energy.It has the advantages of excellent performance,low cost, convenient operation and debugging, so plays an important role in industrial and agriculturalproduction.However, the transmitting frequency of the driving circuit for most transducer is 40 kHz.Thecircuit of 1 MHz ultrasonic transducer is designed In this paper. It mainly introduces the emissive drivingcircuit and the receiving circuit design and the detailed function of them. Finally, the experimentalplatform is built, and the circuit of input and output were tested. Experiments show that the transducer＇ s...

標(biāo)簽： 換能器驅(qū)動電路

上傳時間： 2022-04-28

上傳用戶：
FreeModbus 英文資料

If register should be written or read.This value is passed to the calback functions which support either reading or writing register values. Writing MeanS that the application registers should be updated and reading MeanS that the modbus protocol stack needs to know the current register values.See also: eMBRegHoldingCB(), eMBRegCoilsCB(), eMBRegDiscreteCB() and eMBReglnputCB().Enumeration values: MB_REG_READ Read register values and pass to protocol stack.MB_REG_WRITE Update register values.Note: Note all ports implement this function.A port which wants to get an callback must define the macro MB_PORT_HAS_CLOSE to 1.Returns: If the resources where released it return eMBErrorCode:: MB_ENOERR. If the protocol stack is not in the disabled state it returns eMBErrorCode:: MB_EILLSTATE.Examples: LINUX/demo.c, MCF5235TCP/demo.c, STR71XTCP/demo.c, WIN32/demo. cpp, and WIN32TCP/demo. cpp.his function disables processing of Modbus frames.Returns: If the protocol stack has been disabled

標(biāo)簽： FreeModbus

上傳時間： 2022-05-31

上傳用戶：
基于滑模觀測器與分?jǐn)?shù)階鎖相環(huán)的無傳感器PMSM矢量控制

Abstract: A sliding mode observer and fractional-order phase-locked loop (FO-PLL) method is proposed for the sensorless speed control of a permanent magnet synchronous motor (PMSM).The saturation function is adopted in order to reduce the chattering phenomenon caused by the sliding mode observer. In this proposed FO-PLL, method, a regulable fractional order r is involved, which MeanS that the FO-PLL provides an extra degree of freedom. In fact, the conventional phase-locked loop (PLL) applied in sensorless PMSM control can be seen as a special case of the proposed FO-PLL. By selecting a proper fractional order r a better performance may be achieved. The computer simulation results demonstrate the effectiveness of the proposed method.Key words: fractional calculus; fractional order phase-locked loop; sensorless control; sliding mode observer; permanent magnet synchronous motor; speed controll

標(biāo)簽： 滑模觀測器傳感器 pmsm 矢量控制

上傳時間： 2022-06-18

上傳用戶：

主站蜘蛛池模板：阿图什市| 益阳市| 拉孜县| 蒲江县| 原阳县| 新晃| 临沧市| 永仁县| 灵台县| 黄陵县| 民和| 雅安市| 都江堰市| 体育| 湘西| 荔波县| 托克逊县| 荣昌县| 观塘区| 吉安县| 彭阳县| 富川| 武山县| 徐汇区| 宜章县| 河东区| 黔西县| 黔江区| 新绛县| 法库县| 榆树市| 云龙县| 游戏| 永定县| 平安县| 河南省| 阿勒泰市| 门源| 固原市| 阿拉尔市| 上林县|