本文選題：變速箱試驗臺 + 電控系統(tǒng)　； 參考：《北方工業(yè)大學(xué)》2017年碩士論文

【摘要】：變速箱加載試驗臺是變速箱下線檢測的關(guān)鍵設(shè)備,試驗臺電控系統(tǒng)是試驗臺完成試驗任務(wù)的重要基礎(chǔ),一直是試驗臺開發(fā)領(lǐng)域的重要課題之一,隨著試驗臺性能的提升,對其電控系統(tǒng)提出了更高的要求,電控系統(tǒng)的好壞將直接決定試驗臺研制是否成功。依托于某新能源汽車試驗臺,結(jié)合國內(nèi)外研究成果并根據(jù)客戶要求搭建一套變速箱試驗臺電控系統(tǒng),并以其為研究對象,設(shè)計了系統(tǒng)組成、控制結(jié)構(gòu)和控制策略。針對生產(chǎn)線快節(jié)奏的要求通過全自動輥道將試驗臺同生產(chǎn)線對接,將試驗臺納入裝配線體系中,在試驗臺系統(tǒng)內(nèi)部,通過輥道將各工位串聯(lián)起來,提高了系統(tǒng)的自動化率與生產(chǎn)效率。通過直流電機(jī)與異步電機(jī)數(shù)學(xué)模型對比了兩種驅(qū)動加載方式的優(yōu)缺點,然后推導(dǎo)了異步電機(jī)在定子坐標(biāo)系下的電磁轉(zhuǎn)矩模型,分析了電壓空間矢量對電磁轉(zhuǎn)矩的影響,給出一種DTC控制結(jié)構(gòu),提高了動態(tài)加載精度。對傳統(tǒng)的直流母線結(jié)構(gòu)進(jìn)行了優(yōu)化使系統(tǒng)更加緊湊,采用獨立整流器布置并進(jìn)行了響應(yīng)與負(fù)載分析,分析了工作狀態(tài)中直流母線的變化特性,計算了系統(tǒng)反饋率,經(jīng)測試直流母線反饋率達(dá)到65%。采用交叉耦合控制方法,建立傳動系統(tǒng)理想動力學(xué)模型,針對轉(zhuǎn)動慣量不同、負(fù)載擾動的問題提出控制輪間轉(zhuǎn)速差的控制策略,然后借鑒"主—從控制"的優(yōu)點提出了一種改進(jìn)的反向交叉耦合控制方法解決了差速器兩端轉(zhuǎn)速不匹配的問題,設(shè)計了模糊PID控制器實現(xiàn)了控制參數(shù)的自整定,提高了系統(tǒng)對環(huán)境的適應(yīng)性。最后對文中反向交叉耦合控制方法進(jìn)行測試,測試了系統(tǒng)的同步性與追隨性,試驗效果達(dá)到了設(shè)計要求,現(xiàn)已隨新能源汽車變速箱試驗臺一同交付業(yè)主使用,并已通過了現(xiàn)場驗收證明了本套系統(tǒng)設(shè)計的可行性,相較該企業(yè)老式試驗臺,提高了設(shè)備性能,為企業(yè)節(jié)省了成本,創(chuàng)造了良好效益。
[Abstract]:The gearbox loading test bench is the key equipment for detecting the gearbox downline. The test bench electronic control system is the important foundation for the test bench to complete the test task, and has been one of the important topics in the field of development of the test bed. With the improvement of the performance of the test bed, A higher demand is put forward for the electronic control system, which will directly determine the success of the development of the test rig. Based on a new energy vehicle test bench, combined with the domestic and foreign research results and according to customer requirements to build a set of transmission test stand electronic control system, and take it as the research object, designed the system composition, control structure and control strategy. In order to meet the requirement of fast rhythm of the production line, the test bed is connected with the production line through the automatic roller table, and the test bed is brought into the assembly line system. In the test bed system, the stations are connected in series through the roller table. The automation rate and production efficiency of the system are improved. The advantages and disadvantages of the two driving modes are compared by the mathematical models of DC motor and asynchronous motor. Then the electromagnetic torque model of induction motor in stator coordinate system is derived, and the influence of voltage space vector on electromagnetic torque is analyzed. A DTC control structure is presented to improve the dynamic loading accuracy. The traditional DC bus structure is optimized to make the system more compact. The independent rectifier is arranged and the response and load are analyzed. The variation characteristics of DC bus in the working state are analyzed and the feedback rate of the system is calculated. The feedback rate of DC bus is 65. An ideal dynamic model of transmission system is established by using cross-coupling control method. A control strategy is proposed to control the rotational speed difference between wheels for the problems of different moment of inertia and disturbance of load. Based on the advantages of master-slave control, an improved reverse cross-coupling control method is proposed to solve the mismatch between the two ends of the differential speed. A fuzzy pid controller is designed to realize the self-tuning of the control parameters. The adaptability of the system to the environment is improved. Finally, the reverse cross coupling control method is tested, and the synchronization and tracking of the system are tested. The test results meet the design requirements, and have been delivered to the owner with the new energy vehicle gearbox test bench. The feasibility of the system design has been proved by field acceptance. Compared with the old test bed, the equipment performance has been improved and the cost saved and good benefit created for the enterprise.
【學(xué)位授予單位】：北方工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：U467.52;TP273

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