Reliability Design of Control Circuit for Quartz Crystal Feeding System

摘要

Quartz crystal laser marking is the last process of quartz crystal production, and quartz crystal automatic feeding system works in harsh environment, like high frequency, strong electromagnetic interference, static electricity and large power, and feeding system itself also contains many electromagnetic interference factors, To ensure the system working stably and reliably, in the design and manufacturing of control system, using high quality components, the reasonable wiring and grounding, in the aspect of electromagnetic compatibility, hardware and software anti-interference measures were taken. Through a lot of test working in the laboratory and field, and the design scheme was modified for many times, it finally makes that the feeding system is so stable in the workplace that it could meet the requirements of the customer, and it has a certain guiding significance for the design of other mechanical and electrical products production. Reliability is the key performance of the mechanical and electrical products. The reliability of mechanical and electronic products is designed and produced. Reliability design must be simultaneous with the function design of mechanical and electronic products. Product reliability index is determined by the market information and user requirements. In order to ensure the realization of the expected reliability index, conditions of products and working rules, maintenance should be prescribed in the design phase. Therefore, designers should know the information of the product load spectrum, carefully study conditions on the use of the products and preventive measures. In reliability design, considering the comprehensive economic, there is an optimum reliability, the lowest total cost of manufacture and use of the product for the reliability. It regards the comparison result of using cost with the economic benefits of the system can create as the basis for product design.