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Research on assembly quality adaptive control system for complex mechanical products assembly process under uncertainty

机译：不确定条件下复杂机械产品装配过程装配质量自适应控制系统研究

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摘要

To improve the products' assembly precision, stability and efficiency, an assembly quality adaptive control system (A_QACS) is proposed for complex mechanical products under uncertainty. Firstly, the characteristics of the complex mechanical products assembly process are analyzed, and the definition and overall framework of assembly quality adaptive control (AQAC) are elaborated. Then, the operation logic of AQAC is researched based on the definition of six units. And the structure of A_QACS system is presented for complex mechanical products. Under the structure, the key technologies of the A_QACS system are described respectively, including assembly resource identification, the key source of monitoring, the data acquisition technology and assembly quality adaptive optimization technology. The monitoring of assembly process, real-time data acquisition, assembly quality adaptive control as well as closed-loop intelligent control integrated with comprehensive quality information tracing and knowledge accumulation are realized. It provides support for timely optimizing the work instructions and control strategies for operators and equipment. Finally, an example of the selection of main bearing and the assembly of crankshaft is given. The system is demonstrated feasibility and effectiveness by analyzing variance, assembly qualification rate and rework rate. And the proposed system provides a practical and efficient technology for assembly process quality control. (C) 2015 Elsevier B.V. All rights reserved.
机译：为了提高产品的装配精度，稳定性和效率，提出了不确定性下复杂机械产品装配质量自适应控制系统（A_QACS）。首先，分析了复杂机械产品装配过程的特点，阐述了装配质量自适应控制（AQAC）的定义和总体框架。然后，基于六个单元的定义，研究了AQAC的运行逻辑。给出了复杂机械产品的A_QACS系统结构。在该结构下，分别描述了A_QACS系统的关键技术，包括装配资源识别，监控的关键源，数据采集技术和装配质量自适应优化技术。实现了对装配过程的监控，实时数据采集，装配质量自适应控制以及集成了全面质量信息跟踪和知识积累的闭环智能控制。它为及时优化操作员和设备的工作说明和控制策略提供支持。最后给出了主轴承选择和曲轴总成的例子。通过分析差异，装配合格率和返工率证明了该系统的可行性和有效性。所提出的系统为装配过程的质量控制提供了一种实用有效的技术。 （C）2015 Elsevier B.V.保留所有权利。

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