Production planning method and system for production planning

A system to perform production planning, which creates production plans to produce two or more products within the same period, comprising:

• production plan period setting means, which sets the period for which a production plan is created;
• desired product information storage means, which stores information relating to the amounts of products acquisition of which is desired within said production plan period (desired product amounts) and desired times of delivery;
• product inventory prediction information storage means, which stores information relating to predicted product inventory amounts within said production plan period;
• product inventory target value setting means, which sets, as a product inventory target value, a fluctuation amount for a product within said production plan period which can be predicted probabilistically;
• product production instruction information storage means, which computes the amount obtained by subtracting, from a desired product amount within said production plan period, an amount which can be obtained from the amount (predicted product inventory amount−product inventory target value), together with said desired time of delivery;
• product production regulation information storage means, which stores regulation information relating to the production of a product within said production plan period;
• production plan creation means, which creates and stores a production plan while satisfying the product production instruction information and product production regulation information within said production plan period;
• and,
• product warehousing information storage means, which creates a product warehousing schedule and destocking schedule based on desired product information within said production plan period and said created production plan.

A production planning system, which performs production planning to produce two or more products within the same period wherein a period longer than the longest procurement period is taken as a long production plan period, the system comprising:

• product inventory prediction information storage means, which stores information relating to predicted product inventory amounts within the long production plan period;
• desired product information storage means, which stores information relating to the amounts of products acquisition of which is desired within said long production plan period (desired product amounts) and desired times of delivery, as well as whether demand within the period is finalized or is anticipated;
• product inventory target value setting means, which sets product inventory target values for products within said long production plan period;
• product production instruction information storage means, which computes the amount of a desired product amount within said long production plan period exceeding the amount (predicted product inventory amount−product inventory target value), according to the desired time of delivery, and whether demand is finalized or is anticipated;
• product production regulation information storage means, which stores regulation information relating to the production of a product within said long production plan period;
• production plan creation means, which creates a production plan and stores the created production plan while satisfying the product production instruction information and product production regulation information within said long production plan period;
• and,
• product warehousing information storage means, which creates a product warehousing schedule and destocking schedule based on desired product information within said long production plan period and said production plan.