開發(fā)了一種采用電磁作動器的SPWM 振動主動控制系統(tǒng)。簡單介紹了電磁作動器的數(shù)
學模型，通過仿真分析與試驗分析了解了作動器的作動特性。闡述了SPWM 的調制原理與頻譜分析。對某中型貨車發(fā)動機振動主動控制系統(tǒng)進行了控制規(guī)律研究，并應用單片機技術對控制系統(tǒng)進行了減振試驗驗證。結果表明發(fā)動機振動衰減明顯，該振動主動控制系統(tǒng)的設計是可行的。
關鍵詞：振動主動控制；電磁作動器；SPWM；控制系統(tǒng)
Abstract：A SPWM active vibration control system with electromagnetic actuator was designed. The mathematic model of electromagnetic actuator was introduced briefly,and the performance of actuator was understanded with simulation analysis and test analysis.The modulation principle and spectrum analysis for SPWM were expatiated in detailed. The rule of control law was studied for engine active vibration control of some medium-sized truck, and the vibration reduction test was done for active control system applying singlechip technology.The results show that there is obvious vibration reduction for the engine,and the design of active vibration control system is feasible.
Key words：Active vibration control；Electromagnetic actuator；SPWM；Control system