关键词: 复杂机械产品, 质量门监控系统, 装配质量主动控制, 专家系统, 装配误差, 装配性能预测

Abstract: To screen the quality problem timely in complex mechanical product assembly process,a quality gates monitoring system was put forward.The complex mechanical product assembly process and characteristics were analyzed,the Quality gate (Q-gate) method for controlling the assembly process quality was proposed,and the meaning of Q-gate was defined.The overall architecture of quality active control for assembly process was researched,and the assembly process quality gates monitoring system for complex mechanical products assembly was presented.Under this architecture,the key technologies included Q-gate resource identification and multi-source information sensing technology,Q-gate monitor and control and data collection technology,expert system based on hierarchical reasoning,technology of assembly error analysis based on state space model,dynamic analysis of process capability,hierarchical assembly performance prediction based on PSO-BP neural network,error prevention based on machine vision technology.An example of assembly process quality gates monitoring system in assembly process of the engine was given and developed with J2EE framework to demonstrate the feasibility and effectiveness of the proposed method.

Key words: complex mechanical products, quality gate monitor and control system, assembly quality active control, expert system, assembly error, assembly performance prediction