Research And Application Of Distributed Measurement And Control System On Plant Processing Quality

The products quality assurance marks the development level of production capability, reflects technology grade and shows the economic growth rate of the nation. With the social development and improvement of science and technology, higher products quality is required more and more. This paper mainly researches the theory and application of online data detection and its quality control system based on the project "Distance Detection System on In-Out Oil-hole of Plunger Piston" cooperated with WuXi WeiFu Group, of which the main tasks and achievement list as below:1. Based on the current manufacture information system and requirement of quality control in WeiFu Group, it researches the network model of detection and control system to design an architecture on the distributed quality measurement and detection system to improve the quality management and easily implement and operation for enterprises.2. Researches and develops the SPC unit and data acquisition technology based on the integration of digitized characteristic and analyzing for products quality. According to the diverse distance online data, this paper researches the data acquisition on multi-serial communication ports for short-distance detection and develops the hardware platform of MCU for long-distance detection based on CAN-Bus.3. As the traditional SPC theory is applied maturely for single process capability, this paper integrates the data acquisition and process control into one system to monitor and determine the process capability via SPC analysis graphics.4. There are already many methods and researches on the multi-variant system such as Principle Element approach, Stepwise Regression, Multiple Regression, Additional Information detection, Multi-variant Process Control Chart, etc., but, it is not long for the researches on multi-variant quality process capability and control process, and it is not systemic compared to the single-variant process capability analyzing without an systemic analyzing and evaluation method. This paper describes the T2 method and Principle Element approach and applies to the real production system.5.As an example, this paper researches the plunger piston of lubricant pump and jet nozzle to apply and verify the theories mentioned above...