面向高密度封裝的解耦并聯(lián)調(diào)平機(jī)構(gòu)控制系統(tǒng)設(shè)計(jì)與實(shí)現(xiàn)
[Abstract]:With the rapid increase of the number of bump points per unit area of IC chips, higher requirements for chip pick-up, transfer process positioning accuracy, consistency and so on are put forward in the packaging process. Especially in the high-density package, it is difficult to realize the chip leveling function required by the precise parallel alignment between the chip and the substrate. In this paper, the decoupling parallel leveling mechanism of high-density flip-chip bonding device is taken as the object, and the control system design, kinematics modeling and control strategy based on voice coil motor are studied, and so on. The aim of this paper is to improve the control precision of decoupling parallel leveling mechanism. The main research contents are as follows: 1. The design requirements of the control system for the actual high-density packaging condition of the decoupling parallel leveling mechanism are analyzed, and the design of the control system and the selection of the key components are completed. The kinematics model of decoupling parallel leveling mechanism is proposed, and the simulation analysis is carried out based on Adams software. The simplified kinematics model of decoupled parallel leveling mechanism is solved in detail, including the mathematical relationship among position, velocity and acceleration. The simulation results of Adams software show that the proposed kinematic model of decoupled parallel leveling mechanism is effective. It can be used in the analysis and design of control strategy. 3. A compound controller based on the kinematics model of decoupled parallel leveling mechanism is proposed to improve the motion control performance of decoupled parallel leveling mechanism. The combined simulation based on Adams and Matlab shows that compared with the conventional PID controller, the compound controller not only greatly reduces the overshoot of the system, shortens the stability time of the system, but also reduces the following error of the system to a certain extent. The control system and control strategy of the decoupled parallel mechanism are experimentally studied by using high density flip-chip bonding equipment, and the effectiveness of the designed control system and compound controller is further verified. The experimental results show that for the position control system requirements of decoupled parallel leveling mechanism, the proposed compound controller shows superior performance consistent with the simulation and improves the control effect of the system. The final leveling accuracy measurement results show that the proposed compound controller can effectively improve the control accuracy of the decoupling parallel leveling mechanism, and meet the requirements of the leveling mechanism-0.01? Leveling accuracy requirements. The theory and achievements of this paper have been successfully applied in high-density flip-chip bonding equipment, and the control effect is good. The control system of decoupled parallel leveling mechanism can be extended to other conditions which require high precision positioning in semiconductor packaging field, and has a good application prospect.
【學(xué)位授予單位】:華中科技大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類號(hào)】:TN405
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