Performance of production seat system and survey on appropriate industries to be applied it

研究结果如下：1.提出了生产座椅系统中生产计划与调度的概念流程。提出了生产座椅的六种基本类型。这些类型按(1)座位单位(时间单位或产品单位)、(2)普通座位的使用和(3)时间表中时间段的利用来分类。考虑到生产座椅系统的良好特性。为了验证生产座椅系统应用于多级流水车间的可能性，进行了计算机模拟。仿真结果表明，生产坐席系统能够准确预测每个订单的完工日期，缩短了生产提前期。为了建立订单收据分配给生产席位的最优规则，利用动态规划法建立了数学模型。对生产管理人员进行问卷调查，了解生产管理中存在的问题。提炼出产销一体化、产品类型多样化、需求波动、设计变更等主要问题。用个人计算机数据库软件(DBASE IV)开发了一个生产控制系统的原型。

The following results were obtained in the research :1. A conceptual procedure of the production planning and scheduling in the production seat system was proposed.2. Six basic types of the production seat were suggested. These types were classified by (i) unit of seats (time or product unit), (ii) use of common seats, and (iii) utilization of time bucket in scheduling.3. Good features of the production seat system were considered.4. To examine the possibility for applying the production seat system to a multi-stage flow shop, a computer simulation was carried out. As a result of the simulation, it was shown that the production seat system could predict the accurate completion date for each order and the production seat system could reduce the production lead-time.5. To establish an optimal rule for assigning the order receipts to production seats, a mathematical model was formulated using the dynamic programming.6. A Survey for finding production management problems was conducted by questionnaires to production control managers. Some major problems such as the integration of production and sales, diversification of product types, demand fluctuation and design change were extracted.7. A prototype model of a production control system was developed using the data base software (dBase IV) for a personal computer.