發(fā)布時(shí)間：2018-05-27 03:17

  本文選題：并聯(lián)機(jī)器人 + 軌跡跟蹤��； 參考：《蘭州理工大學(xué)》2017年碩士論文

【摘要】：隨著機(jī)器人技術(shù)的不斷發(fā)展,機(jī)器人已經(jīng)在各行各業(yè)被廣泛使用,其中并聯(lián)機(jī)器人因具有操作空間大、承載能力強(qiáng)、運(yùn)動(dòng)精度高、運(yùn)動(dòng)學(xué)逆解簡(jiǎn)單、操作速度快等一系列優(yōu)點(diǎn),受到眾多研究者的青睞。近幾年來(lái),在化妝品、藥品和電子等領(lǐng)域的包裝生產(chǎn)線上,存在著大批量重復(fù)性的工作,如拆卸、分揀、搬運(yùn)等,目前這類工作大部分由人工來(lái)完成,這勢(shì)必會(huì)降低工作效率和產(chǎn)品精度。因此急需開發(fā)一種少自由度機(jī)械手來(lái)代替人工完成上述工作,以提高工作效率和產(chǎn)品精度。Delta機(jī)器人是一種典型的空間三自由度平動(dòng)并聯(lián)機(jī)構(gòu),與串聯(lián)機(jī)器人相比,它的整體結(jié)構(gòu)比較簡(jiǎn)單、末端執(zhí)行器運(yùn)動(dòng)速度高等優(yōu)點(diǎn),已成功解決了上述問(wèn)題并得到廣泛應(yīng)用。目前國(guó)內(nèi)外對(duì)Delta機(jī)器人在軌跡規(guī)劃、控制策略等方面的研究還不夠成熟,導(dǎo)致在運(yùn)行過(guò)程中存在運(yùn)動(dòng)精度不高、運(yùn)動(dòng)穩(wěn)定性較低等問(wèn)題。本文以工業(yè)中應(yīng)用最為廣泛的三自由度Delta機(jī)器人為研究對(duì)象,首先對(duì)國(guó)內(nèi)外Delta機(jī)器人的研究現(xiàn)狀進(jìn)行了概括總結(jié)。其次以Delta機(jī)器人的工作原理和結(jié)構(gòu)特點(diǎn)為依據(jù),分析了機(jī)構(gòu)的自由度數(shù)、結(jié)構(gòu)設(shè)計(jì)參數(shù)和結(jié)構(gòu)聯(lián)接形式,運(yùn)用Pro/E軟件建立Delta機(jī)器人的三維實(shí)體模型,并驗(yàn)證了模型的合理性。再者利用Pro/E軟件和ADAMS軟件之間的接口,將所建立的Delta機(jī)器人的三維實(shí)體模型導(dǎo)入到ADAMS中,通過(guò)添加質(zhì)量和約束建立虛擬機(jī)器人模型,在關(guān)節(jié)空間中對(duì)Delta機(jī)構(gòu)的期望軌跡進(jìn)行合理的軌跡規(guī)劃,基于ADAMS軟件進(jìn)行運(yùn)動(dòng)學(xué)和動(dòng)力學(xué)仿真分析。仿真結(jié)果表明:末端執(zhí)行器的速度和加速度以及主動(dòng)臂的角速度和角加速度隨時(shí)間變化均勻且連續(xù),拐角處過(guò)渡平滑;Delta機(jī)器人運(yùn)行過(guò)程較為平穩(wěn),具有良好的運(yùn)動(dòng)性能。最后為了改善機(jī)構(gòu)的軌跡跟蹤精度,以Delta機(jī)器人末端執(zhí)行器的運(yùn)動(dòng)軌跡為控制目標(biāo),采用MATLAB軟件分別建立PID控制系統(tǒng)和模糊PID控制系統(tǒng),基于ADAMS和MATLAB進(jìn)行聯(lián)合仿真。仿真結(jié)果表明:模糊PID控制相對(duì)于PID控制不僅響應(yīng)速度較快,而且控制精度較高,達(dá)到了較為滿意的仿真效果,該結(jié)果可為Delta機(jī)器人軌跡跟蹤控制研究提供可靠的理論化指導(dǎo)。
[Abstract]:With the continuous development of robot technology, robot has been widely used in various industries. Among them, parallel robot has a series of advantages, such as large operation space, strong bearing capacity, high motion precision, simple kinematics inverse solution, fast operation speed, and so on. It is favored by many researchers. In recent years, in the packaging production lines in the fields of cosmetics, pharmaceuticals and electronics, there is a lot of repetitive work, such as disassembly, sorting, handling, etc. At present, most of this kind of work is done by manual work. This will inevitably reduce work efficiency and product accuracy. Therefore, it is urgent to develop a small degree of freedom manipulator instead of manual to complete the above work, so as to improve the working efficiency and product precision. Delta robot is a typical parallel mechanism with three degrees of freedom in space, compared with the serial robot. It has the advantages of simple structure and high speed of the end effector, which has been successfully solved and widely used. At present, the research on trajectory planning and control strategy of Delta robot is not mature enough, which leads to some problems such as low motion precision and low motion stability. In this paper, the three-degree-of-freedom (Delta) robot, which is widely used in industry, is taken as the research object. Firstly, the research status of Delta robot at home and abroad is summarized. Secondly, based on the working principle and structural characteristics of Delta robot, the degree of freedom of mechanism, structural design parameters and structural connection form are analyzed. The 3D solid model of Delta robot is established by using Pro/E software, and the rationality of the model is verified. Thirdly, using the interface between Pro/E software and ADAMS software, the 3D entity model of Delta robot is imported into ADAMS, and the virtual robot model is established by adding quality and constraints. The desired trajectory of the Delta mechanism is reasonably planned in the joint space, and the kinematics and dynamics simulation is carried out based on the ADAMS software. The simulation results show that the velocity and acceleration of the end actuator and the angular velocity and acceleration of the active arm vary uniformly and continuously with time. Finally, in order to improve the tracking accuracy of the mechanism, the trajectory of the end actuator of the Delta robot is taken as the control object. The PID control system and the fuzzy PID control system are established by using the MATLAB software, and the joint simulation is carried out based on ADAMS and MATLAB. The simulation results show that the fuzzy PID control is not only faster than PID control, but also has higher control precision, and achieves a satisfactory simulation effect. The results can provide reliable theoretical guidance for the research of Delta robot trajectory tracking control.
【學(xué)位授予單位】：蘭州理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TP242

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1 宗光華;畢樹生;王巍;李大寨;;機(jī)器人技術(shù)開拓未來(lái)——2005年國(guó)際機(jī)器人展(日本)巡禮[J];機(jī)器人技術(shù)與應(yīng)用;2006年01期

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3 謝芝馨;;蘇聯(lián)機(jī)器人技術(shù)述評(píng)[J];機(jī)械與電子;1989年04期

4 羅飛，，余達(dá)太;主動(dòng)式控制──機(jī)器人抑振控制的有效方式[J];機(jī)器人;1995年04期

5 盧桂章;當(dāng)前高技術(shù)發(fā)展的前沿——機(jī)器人技術(shù)[J];天津科技;1995年01期

6 蘇陸;日本機(jī)器人技術(shù)與產(chǎn)品[J];全球科技經(jīng)濟(jì)w

本文編號(hào)：1940187