拖拉机经济寿命计算问题的研究

采用系统工程和农业机器运用管理学等多学科相结合的研究方法,对拖拉机经济寿命计算时的目标选择问题及其计算模型进行了探讨;分别以平均单位工作量费用最小、年均费用最小、年均纯收益最大以及单位工作量纯收益最大为拖拉机经济寿命计算目标,并对其计算方法进行了阐述;给出了不同目标下群体拖拉机经济寿命的计算模型和单台拖拉机经济寿命的计算模型,从而为进一步研究拖拉机经济寿命提供了新思路.

Calculation of Tractor's Economical Life

Using multi-disciplinary unify of the systems engineering, the management study of using agricultural machinery and so on, this article carries on the discussion to the target selection question of computing the tractor economic life and its computation model. Respectively take the average unit work load expense slightly as the goal, the yearly average expense slightly for the goal, the yearly average net-income most greatly for the goal, the unit work load net-income most greatly carries on the elaboration for the goal to the tractor economic life estimation problem. The article produces under the different goal the community tractor economic life computation model and the single tractor economic life computation model. These new models have offered the new train of thought for studying the economic life further.