本文選題：船舶 + 軸功率　； 參考：《大連海事大學》2015年碩士論文

【摘要】：隨著我國航運業(yè)和造船業(yè)的穩(wěn)步發(fā)展,船舶制造和維修過程中的相關(guān)檢驗法規(guī)和體系更加完善,設(shè)計性能優(yōu)良的船舶檢測設(shè)備有助于確保船舶的安全運行以及船舶檢驗中各個環(huán)節(jié)高效的執(zhí)行。軸功率是船舶動力系統(tǒng)中的主要性能參數(shù)之一, 直接反應(yīng)了船舶動力系統(tǒng)的工作狀態(tài)。目前,針對軸功率的測試主要是通過測量軸的扭轉(zhuǎn)應(yīng)變和轉(zhuǎn)速兩個參數(shù),然后計算得到功率和力矩來實現(xiàn)。轉(zhuǎn)速測量技術(shù)已相當成熟,針對扭矩測量方法主要有磁彈性型、應(yīng)變型和相位差型,本文根據(jù)軸系的實際工作環(huán)境以及各方法的優(yōu)缺點,選擇使用應(yīng)變型扭矩測量法,該方法測量范圍大,精度高,且結(jié)構(gòu)簡單安裝方便。本文研究了扭矩應(yīng)變測量技術(shù)和數(shù)字無線傳輸技術(shù),通過測量粘貼在軸系上的電阻應(yīng)變片的變形,進而計算得到扭矩值。設(shè)計了扭矩信號的處理方案,從應(yīng)變電橋輸出的微弱信號經(jīng)過AD620的放大,后經(jīng)Butterworth二階低通濾波器濾波,在通過STC12進行A/D轉(zhuǎn)換,將數(shù)字信號送到nRF24L01并發(fā)射出去；同時接收終端的nRF24L01接收到數(shù)字信號,并由STM32對其進行處理、顯示、存儲。討論了系統(tǒng)的抗干擾措施。首先分析了系統(tǒng)中可能存在的干擾來源及路徑,確定了硬件抗干擾的方法,包括屏蔽、濾波和接地等。本文最終完成了基于STC12單片機的扭矩采集發(fā)射端和基于STM32的接收終端的軟硬件設(shè)計,包括電源管理、信號調(diào)理、無線傳輸、人機交互、SDIO等子模塊。在實驗室條件下使用本儀器對負載設(shè)備轉(zhuǎn)軸進行了測量實驗,并與負載設(shè)備自帶的扭矩儀和轉(zhuǎn)速表數(shù)據(jù)進行了對比,系統(tǒng)各項功能正常,運行穩(wěn)定,測量精度達到了預(yù)期目的。
[Abstract]:With the steady development of China's shipping and shipbuilding industries, the relevant inspection laws and regulations and systems in the process of ship manufacturing and maintenance have become more perfect. The design of ship inspection equipment with good performance is helpful to ensure the safe operation of ship and the efficient execution of every link in ship inspection. Shaft power is one of the main performance parameters in ship power system, which directly reflects the working state of ship power system. At present, the measurement of shaft power is mainly realized by measuring the torsional strain and rotational speed of the shaft, and then calculating the power and torque. The measuring technology of rotational speed is quite mature. According to the actual working environment of shafting system and the advantages and disadvantages of each method, this paper chooses to use strain type torque measurement method in view of the main measuring methods of torque are magnetoelastic, strain and phase difference, according to the actual working environment of shafting and the advantages and disadvantages of each method. This method has the advantages of wide measuring range, high precision and simple structure. In this paper, the torque strain measurement technique and digital wireless transmission technology are studied. By measuring the deformation of the resistance strain gauge attached to the shafting, the torque value is calculated. The processing scheme of torque signal is designed. The weak signal output from the strain bridge is amplified by AD620, then filtered by Butterworth second-order low-pass filter. The digital signal is sent to nRF24L01 and transmitted through STC12. At the same time, the nRF24L01 of the receiving terminal receives the digital signal, and it is processed, displayed and stored by the STM32. The anti-interference measures of the system are discussed. Firstly, the possible sources and paths of interference in the system are analyzed, and the methods of hardware anti-jamming, including shielding, filtering and grounding, are determined. In this paper, the hardware and software design of torque acquisition transmitter and receiving terminal based on STC12 microcontroller are finished, including power management, signal conditioning, wireless transmission, man-machine interaction, SDIO and other sub-modules. The instrument is used to measure the rotating shaft of the load equipment under the laboratory conditions, and compared with the data of the torque meter and the tachometer brought by the load equipment. The system has normal functions, stable operation and achieved the expected purpose of measuring precision.
【學位授予單位】：大連海事大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U672.7

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本文編號：1890522