本文選題：測功機(jī)傳動(dòng)裝置軸承 + 液壓伺服加載��； 參考：《青島科技大學(xué)》2017年碩士論文

【摘要】：測功機(jī)傳動(dòng)裝置中非常重要的零部件就是用于支撐其中間轉(zhuǎn)軸的軸承,該處軸承的強(qiáng)度、抗疲勞破壞的能力以及使用壽命等性能直接影響到測功機(jī)的測試精度和工作可靠性,因此該處軸承各項(xiàng)性能參數(shù)必須要進(jìn)行實(shí)驗(yàn)測試并通過測試來分析該處軸承對應(yīng)不同工況下的使用壽命以及影響其使用壽命的因素,從而可以指導(dǎo)我們在生產(chǎn)實(shí)踐中定期維護(hù)或更換該處軸承以確保測功機(jī)的測試精度和工作可靠性。因此對本課題的研究非常具有實(shí)際意義。本文首先介紹了國內(nèi)外軸承試驗(yàn)臺(tái)發(fā)展?fàn)顩r,根據(jù)測功機(jī)傳動(dòng)裝置軸承的結(jié)構(gòu)參數(shù)和實(shí)際工況提出了測功機(jī)傳動(dòng)裝置軸承液壓加載測試系統(tǒng)的主要設(shè)計(jì)要求,確定了該測試系統(tǒng)的總體結(jié)構(gòu)設(shè)計(jì)方案,對該測試系統(tǒng)的關(guān)鍵裝置或結(jié)構(gòu)進(jìn)行了選型或設(shè)計(jì),并應(yīng)用ANSYS Workbench軟件對該測試系統(tǒng)主軸分別進(jìn)行了靜力學(xué)分析和振動(dòng)模態(tài)分析,分析了該測試系統(tǒng)主軸的強(qiáng)度和剛度以及其各階模態(tài)固有頻率、振型和臨界轉(zhuǎn)速,從而驗(yàn)證了該測試系統(tǒng)主軸的結(jié)構(gòu)設(shè)計(jì)是合理的。其次,根據(jù)本系統(tǒng)液壓伺服加載的技術(shù)要求,完成了該液壓伺服加載系統(tǒng)的設(shè)計(jì)與主要液壓元件的選型計(jì)算,接著對液壓伺服加載系統(tǒng)進(jìn)行了數(shù)學(xué)建模,推導(dǎo)出其傳遞函數(shù),利用MATLAB軟件分別對其穩(wěn)定性和動(dòng)態(tài)性能進(jìn)行了仿真分析,并采用PID控制策略對其進(jìn)行了校正,確定了該液壓伺服加載系統(tǒng)的加載力閉環(huán)控制模塊的PID參數(shù),從而確保了該液壓伺服加載系統(tǒng)能夠滿足技術(shù)要求。最后,對其測控系統(tǒng)進(jìn)行了總體方案設(shè)計(jì),分別對該測控系統(tǒng)所需的測力傳感器、溫度傳感器和可編程邏輯控制器PLC等主要硬件進(jìn)行了選型和配置,并對該測控系統(tǒng)進(jìn)行了程序設(shè)計(jì),采用三菱FX2N系列PLC編程軟件GX-Developer編寫了該測控系統(tǒng)下位機(jī)PLC的關(guān)鍵控制程序,從而實(shí)現(xiàn)本系統(tǒng)的液壓加載力的PID閉環(huán)控制。本文設(shè)計(jì)的測功機(jī)傳動(dòng)裝置軸承液壓加載測試系統(tǒng)能夠很好地模擬測功機(jī)傳動(dòng)裝置軸承的實(shí)際工作狀況,可以精確地控制給該軸承施加的加載力和測試系統(tǒng)主軸轉(zhuǎn)速,實(shí)時(shí)采集和監(jiān)測該軸承的溫度和加載力等各項(xiàng)參數(shù),從而達(dá)到了對該軸承的性能和壽命精確測試的目的。
[Abstract]:The most important part of dynamometer transmission is the bearing which is used to support its intermediate shaft. The strength of the bearing, the ability to resist fatigue damage and the service life of the dynamometer have a direct impact on the testing accuracy and working reliability of the dynamometer.Therefore, the performance parameters of the bearing must be tested and tested to analyze the service life of the bearing under different working conditions and the factors affecting its service life.It can guide us to maintain or replace the bearings regularly in production practice to ensure the accuracy and reliability of the dynamometer.Therefore, the study of this topic is of great practical significance.This paper first introduces the development of bearing test bed at home and abroad, and puts forward the main design requirements of hydraulic load test system of dynamometer transmission device bearing according to the structural parameters and actual working conditions of dynamometer transmission device bearing.The overall structure design scheme of the test system is determined, the key device or structure of the test system is selected or designed, and the static analysis and vibration modal analysis of the main shaft of the test system are carried out by using ANSYS Workbench software.The strength and stiffness of the main shaft of the test system and the natural frequency, mode shape and critical speed of each order of the spindle are analyzed, and the structural design of the main shaft of the test system is verified to be reasonable.Secondly, according to the technical requirements of the hydraulic servo loading system, the design of the hydraulic servo loading system and the selection and calculation of the main hydraulic components are completed. Then, the mathematical model of the hydraulic servo loading system is established and its transfer function is deduced.The stability and dynamic performance of the hydraulic servo loading system are simulated and analyzed by using MATLAB software, and the PID control strategy is used to correct it. The PID parameters of the closed loop control module of the hydraulic servo loading system are determined.Thus, the hydraulic servo loading system can meet the technical requirements.Finally, the overall scheme of the measurement and control system is designed. The main hardware such as force sensor, temperature sensor and programmable logic controller (PLC) are selected and configured respectively.The program of the system is designed, and the key control program of PLC is programmed by Mitsubishi FX2N series PLC programming software GX-Developer, which realizes the PID closed loop control of the hydraulic loading force of the system.The hydraulic load test system designed in this paper can simulate the actual working condition of the dynamometer drive, and can accurately control the loading force applied to the bearing and the spindle speed of the test system.The parameters of the bearing such as temperature and loading force are collected and monitored in real time, so the performance and life of the bearing can be measured accurately.
【學(xué)位授予單位】：青島科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TH132

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