摘要
模具制造过程的诸多因素导致其项目制造成本难以准确估计,尤其是模具返修成本的不确定性。为此,对带随机返修的模具项目制造成本监视方法进行了研究。首先,分析了造成模具项目成本不确定的诸多因素,并建立了基于返修事件的Markov链项目成本演化模型,考虑了返修成本的不确定性;其次,基于项目实际情况,提出了修正矩阵的方法对返修概率进行修正;最后,开发出了一个用于监视轮胎模具项目成本的系统,并结合实例验证了该模型的有效性和实用性。
The manufacturing cost is difficult to be estimated accurately due to various factors in mould manufacturing process, especially the uncertainty in repair stage. Therefore, the monitoring method of the manufacturing cost of the mould project with stochastic repair was researched. Firstly, the factors which cause the project manufacturing cost uncertain were analyzed. To consider the uncertainty of the repair cost, a project cost evolutionary model which is based on the repair event Markov chain was set up. Secondly, based on the manufacturing truth the modify matrix was proposed. Finally, a system was developed to monitor the tire mould project cost. The validity and the practicality of the model was confirmed in this case.
出处
《机电工程技术》
2013年第8期12-18,共7页
Mechanical & Electrical Engineering Technology
关键词
模具项目
马尔科夫链
返修
制造成本
mold projects
Markov chain
repairing
manufacture cost
