.车间在制品的数量最小、停放时间最短.车间在制品的数量最小、停放时间最短 5. 5. 提高人、机器的利用率提高人、机器的利用率 6. 6. 生产和人工成本最低生产和人工成本最低湖南大学机械与汽车工程学院范叶 fy_blue69@ Objectives of operations scheduling 1) Meet due date; 2) Minimize WIP inventory; 3) Minimize the average flow time through the systems; 4) Provide for high machine/worker (time) utilization (minimize idle time); 5) Reduce setup cost; 6) Minimize production and worker costs Discussion 1) and 3) aim at providing a high level of customer service; 2), 4), 5) and 6) are to provide a high level of plant efficiency; Impossible to optimize all above objectives simultaneously; Proper trade off between cost and quality is one of the most challenging strategic issues facing a firm today; -What is Operations Scheduling -What is Operations Scheduling ? ?