大射電望遠(yuǎn)鏡AB軸與精調(diào)平臺(tái)運(yùn)動(dòng)控制系統(tǒng)研究
本文選題:FAST + AB軸平臺(tái) ; 參考:《西安電子科技大學(xué)》2012年碩士論文
【摘要】:本文根據(jù)新一代大射電望遠(yuǎn)鏡光機(jī)電一體化創(chuàng)新設(shè)計(jì)方案,在分析大射電望遠(yuǎn)鏡(FAST)三級(jí)調(diào)整系統(tǒng)的需求和運(yùn)動(dòng)控制技術(shù)的研究現(xiàn)狀和發(fā)展趨勢(shì)的基礎(chǔ)上,針對(duì)饋源指向跟蹤系統(tǒng)高精度軌跡跟蹤的要求,從工程實(shí)際出發(fā),設(shè)計(jì)并實(shí)現(xiàn)了大射電望遠(yuǎn)鏡AB軸平臺(tái)和Stewart平臺(tái)控制系統(tǒng)硬件和軟件,為三級(jí)復(fù)合控制的研究提供了實(shí)驗(yàn)平臺(tái)。具體工作可歸納為以下三個(gè)方面。 分析了原有兩級(jí)調(diào)整系統(tǒng)的優(yōu)缺點(diǎn),在原有系統(tǒng)基礎(chǔ)上設(shè)計(jì)了新的三級(jí)調(diào)整系統(tǒng),并對(duì)新設(shè)計(jì)的三級(jí)調(diào)整系統(tǒng)的控制策略進(jìn)行了詳細(xì)介紹。 對(duì)AB軸平臺(tái)的角度分配方程進(jìn)行了推導(dǎo),找出了一種較好的AB軸轉(zhuǎn)角求解方式。并通過(guò)MATLAB仿真模擬了幾種情況下的角度分配,接著對(duì)Stewart平臺(tái)的運(yùn)動(dòng)軌跡規(guī)劃原理進(jìn)行了分析,建立了Stewart平臺(tái)的運(yùn)動(dòng)學(xué)模型。對(duì)兩種Stewart平臺(tái)典型軌跡下各腿長(zhǎng)進(jìn)行了規(guī)劃,,并用MATLAB進(jìn)行了數(shù)據(jù)仿真,驗(yàn)證了規(guī)劃的可行性。 根據(jù)項(xiàng)目對(duì)運(yùn)動(dòng)控制的要求,設(shè)計(jì)了基于SynqNet運(yùn)動(dòng)控制現(xiàn)場(chǎng)總線技術(shù)的大射電望遠(yuǎn)鏡AB軸和Stewart平臺(tái)的控制系統(tǒng)。并對(duì)AB軸和Stewart平臺(tái)控制硬件和軟件進(jìn)行了設(shè)計(jì)和開(kāi)發(fā),通過(guò)實(shí)驗(yàn)驗(yàn)證了新的控制軟件的可行性。
[Abstract]:According to the innovative design scheme of the new generation large radio telescope opto-electromechanical integration, this paper analyzes the demand of the three-stage adjustment system of the large radio telescope and the research status and development trend of the motion control technology. According to the requirement of high precision trajectory tracking for feed pointing tracking system, the hardware and software of AB axis platform and Stewart platform control system for large radio telescope are designed and implemented, which provides an experimental platform for the research of three-stage compound control. Specific work can be summarized into the following three aspects. This paper analyzes the advantages and disadvantages of the original two-stage adjustment system, designs a new three-level adjustment system on the basis of the original system, and introduces the control strategy of the new three-stage adjustment system in detail. In this paper, the angle distribution equation of AB axis platform is deduced, and a better way to solve AB axis rotation angle is found. The angle distribution in several cases is simulated by MATLAB simulation. Then the motion trajectory planning principle of Stewart platform is analyzed and the kinematics model of Stewart platform is established. In this paper, the leg length of two typical Stewart platforms is planned and simulated with MATLAB to verify the feasibility of the planning. According to the requirements of motion control, the control system of AB axis and Stewart platform for large radio telescope based on SynqNet motion control fieldbus technology is designed. The control hardware and software of AB axis and Stewart platform are designed and developed, and the feasibility of the new control software is verified by experiments.
【學(xué)位授予單位】:西安電子科技大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2012
【分類號(hào)】:P111.44
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