A Tolerance Design Method for a High Voltage Power Supply Based on Life-Cycle Cost
Taguchis robust design method is widely accepted by industrial engineers and quality control practitioners to improve product quality and process performance at low cost.Currently, most robust design research involves the study of quality characteristics at the initial state.However, the long-term robustness of a product, which is also known as reliability, is even more important for the reliability-critical system.It may not lead to an optimum solution if ignoring the performance deviation attributed to component degradation over time.This study proposes a tolerance design method based on the life-cycle cost, which simultaneously considers manufacturing cost (MC) of the components and life-cycle usage cost (UC) of products to improve product quality.The manufacturing cost is calculated by the cost-tolerance model.The usage cost consists of the service quality loss cost and failure cost.The service quality loss is introduced by Taguchi quadratic function and the degradation model of components at a certain lifetime.The failure cost is the money caused by the product performance being out of specifications.Based on the life-cycle cost, the tolerance optimization model considering the degradation model of components is established.The proposed method is illustrated on a high voltage power supply.The results show that the proposed method does not only reduce the manufacturing cost but also meet the requirement of robustness and reliability.
life-cycle cost tolerance design reliability high voltage power supply
Xuerong Ye Mingdong Lv Jun Tan Lu Wang Guofu Zhai
Department of Electrical Engineering and Automation Harbin Institute of Technology, Harbin, 150001, China
国际会议
江苏常熟
英文
27-32
2017-04-18（万方平台首次上网日期，不代表论文的发表时间）