Abstract:The production is divided into learning period - stable period - fatigue period - Final excitation period, and a combined production - inventory optimization model with fatigue terminal excitation is established. Compared with fatigue without terminal excitation, the existence of terminal excitation increases the total yield and prolongs the whole production time. In the final excitation period, the faster the productivity increases, the fewer optimal supply times, the larger the single supply, and the lower the average cost of the system. In the study period, whether the increase of productivity or initial productivity, will lead to the increase of initial productivity during the fatigue period, thus prolonging the production time of the fatigue period. Either the increase of productivity or initial productivity will increase the average productivity of the system, thus reducing the average cost of the system. The greater the productivity reduction rate during the fatigue period, indicating that the more rapid fatigue, the need to reduce the production time during the fatigue period to alleviate fatigue. The greater the productivity increase rate in the final excitation period, the shorter the production period during the fatigue period. The increase of productivity during the fatigue period makes the average cost of the system increase first and then decrease.