A novel combination belief rule base model for mechanical equipment fault diagnosis

Due to the excellent performance in complex systems modeling under small samples and uncertainty, Belief Rule Base(BRB) expert system has been widely applied in fault diagnosis. However, the fault diagnosis process for complex mechanical equipment normally needs multiple attributes, which can lead to the rule number explosion problem in BRB, and limit the efficiency and accuracy. To solve this problem, a novel Combination Belief Rule Base(C-BRB) model based on Directed Acyclic Graph(DAG) structu...     

MIMO仿射型非线性系统的滑模切换极值搜索控制

针对 MIMO仿射型非线性系统设计了一种基于分数阶积分的滑模切换极值搜索控制方法,将系统分解为若干个子系统,对每个子系统采用输出跟踪误差以及该误差函数的分数阶积分值构造切换函数,构造滑模切换极值搜索控制律,证明了方法的稳定性。对比已有的方法进行仿真分析,验证了方法具有较好性能。     

某型训练指挥台电源系统的优化设计

电源系统是为某型训练指挥台内部各设备提供能源支持的基础单元。通过对电源系统的组成结构和功能的系统分析,针对电源系统存在的 3个方面不足,包括:启动冲击电流过大、电源开关存安全隐患以及风扇组交流负载消耗不合理,提出相应的优化措施,即:应用软启动电源降低启动冲击电流、利用低压控制高压提高安全性、使用直流风扇替换交流风扇降低交流负载消耗。实际应用表明,在采用上述优化措施后系统的可靠性和安全性均得 到了明显提高,达到了优化的目的。