EAM发展第一阶段：事后维修（从18世纪第一次产业革命到19世纪）。

EAM系统在此时的作用是当设备故障或失效时非计划性维修。

EAM发展第二阶段：预防维修（从19世纪到20世纪30年代）。

EAM系统在此时的作用是定期点检及早期维护，在这阶段，EAM系统包括计划检修和定期检修。其中计划检修是以设备修理周期、结构和复杂度系数等一套定额标准为依据，采用强制预修理，即按计划周期图表对设备修理。EAM系统中定期维修是以设备日常点检和定期点检为基础，依据点检发现缺陷，及时编制检修计划，以便对设备修理、排除隐患，恢复设备的性能。

EAM发展第三阶段：EAM系统在这时的作用是经济检修。

此后EAM资产管理系统的功能升级为全员维修（从20世纪40年代至80年代）。EAM系统在这时的功能包含事后维修(BM)、预防维修(PM)、改进维修(CM)和维修预防(MP)。EAM系统在这时的特点是设备现代化、管理现代化，EAM系统在这时开始拥有设备寿命周期评价，在此阶段，也产生了设备综合工程学、维修工程学等学科，EAM系统维修组织集中化发展，维修活动全员参与。

EAM发展第四阶段：状态维修和预知维修（从20世纪80年代至今）。

EAM系统在这时的功能是依据对设备运行状态监测、预测和判别做出维修决策。维修决策的产生条件是从科学技术领域分化、综合发展，EAM系统对设备管理，不仅有各种理论支持，还以监测和诊断的科学技术手段为基础。在这一阶段，设备管理也向着社会化、专业化和国际化发展，运行人员在此时开始参与检修。

翻译：

The first stage of EAM development: post-maintenance (from the first Industrial Revolution in the 18th century to the 19th century).

The role of the EAM system at this time is to perform unscheduled maintenance when the equipment fails or fails. Digital transformation www.szhzxw.cn

The second stage of EAM development: Preventive maintenance (from the 19th century to the 1930s).

The role of the EAM system at this time is to periodically check and early maintenance, in this stage, the EAM system includes scheduled maintenance and periodic maintenance. The planned maintenance is based on a set of standard standards such as equipment repair cycle, structure and complexity coefficient, and adopts compulsory pre-repair, that is, equipment repair according to the planned cycle chart. In the EAM system, regular maintenance is based on the daily spot check and regular spot check of the equipment. According to the spot check, defects are found, and maintenance plans are prepared in time to repair the equipment, eliminate hidden dangers, and restore the performance of the equipment. Digital transformation www.szhzxw.cn

The third stage of EAM development: The role of the EAM system at this time is economic overhaul.

The functionality of the EAM asset management system was then upgraded to full maintenance (from the 1940s to the 1980s). The functions of the EAM system at this time include post maintenance (BM), preventive maintenance (PM), improved maintenance (CM), and maintenance prevention (MP). At this time, EAM system was characterized by equipment modernization and management modernization, and EAM system began to have equipment life cycle evaluation. At this stage, comprehensive equipment engineering, maintenance engineering and other disciplines were also produced, and the maintenance organization of EAM system was centralized and developed, and maintenance activities were fully participated. Digital transformation www.szhzxw.cn

The fourth phase of EAM development: Condition Maintenance and Predictive maintenance (from the 1980s to the present).

The function of the EAM system at this time is to make maintenance decisions based on the monitoring, forecasting and discriminating of equipment operating conditions. The condition of maintenance decision is differentiated and comprehensive development from the field of science and technology. EAM system not only has various theoretical support for equipment management. But also is based on scientific and technological means of monitoring and diagnosis. At this stage, equipment management is also becoming social, professional and international. And operators begin to participate in maintenance at this time. Digital transformation www.szhzxw.cn