Theoretical investigation on self-recovery regulation method for diesel engine misalignment through co-simulation  

作　　者：Jiang Zhinong Wang Zijia Mao Zhiwei Zhang Jinjie Wang Chenguang Huang Yifei 江志农;Wang Zijia;Mao Zhiwei;Zhang Jinjie;Wang Chenguang;Huang Yifei(Diagnosis and Self-Recovering Engineering Research Center,Beijing University of Chemical Technology,Beijing 100029,P.R.China;Beijing Bohua Anchuang Technology Co.,Ltd,Beijing 101399,P.R.China)

机构地区：[1]Diagnosis and Self-Recovering Engineering Research Center,Beijing University of Chemical Technology,Beijing 100029,P.R.China [2]Beijing Bohua Anchuang Technology Co.,Ltd,Beijing 101399,P.R.China

出　　处：《High Technology Letters》2021年第3期238-248,共11页高技术通讯（英文版）

基　　金：National Natural Science Foundation of China(No.52101343);the Doubule First-rate Construction Special Funds(No.ZD1601)。

摘　　要：Misalignment is one of the most common faults for the diesel engine.In order to eliminate the misalignment fault of the diesel engine in the process of operation,a targeting self-recovery regulation system is constructed by using a movable base and displacement sensors.Misalignment is monitored and detected in real time,the value of misalignment is calculated rapidly and accurately,andintelligent decision is made.Then,the base is moved reversely with a definite target to drive the shaft to translate or rotate,so that the shafts can be recovered to alignment online.A co-simulation model for the self-recovery system is established which consists of a dynamic model of the crankshaft system and control model.The self-recovery regulation process of misalignment is simulated.The simulation results show that the system can accurately calculate the misalignment values,with an error of less than 5%,and can automatically eliminate the misalignment fault of the diesel engine online.The research results provide theoretical support for the self-recovery regulation of misalignment fault,and due to the universality of structure and principle,the self-recovery system is not only suitable for diesel engine,but also for other rotating machineries.

关 键 词：diesel engine misalignment fault monitoring and detection targeting self-recovery CO-SIMULATION 

分 类 号：TK428[动力工程及工程热物理—动力机械及工程]