船用智能化低速柴油机电控排气阀HIL仿真试验平台设计与实现

在RT-Flex60C型智能化柴油机WECS(WrtsilElectronic Control System)控制系统和推进控制系统基础上,采用"缸平移法"生成模拟排气阀升程信号,结合自主开发的实时仿真单元和信号采集单元,研制了大型智能化柴油机电控排气阀系统的硬件在环(Hardware In the Loop,HIL)仿真试验平台,该平台可采集伺服油轨压、排气阀升程、排气阀开启/关闭控制信号、空气弹簧压力等信号,试验结果表明,试验平台性能稳定可靠,能正确模拟真实柴油机的运行,实现了可变排气阀开启VEO(Variable Exhaust Opening)和可变排气阀关闭VEC(Variable Exhaust Closing),为研究大型智能化低速柴油机电控排气阀的特性、执行机构的性能验证以及控制系统的测试提供了试验平台。

Design and Implementation of HIL Simulation Test Platform of Electrically Controlled Exhaust valve for Intelligent Low-speed Marine Diesel Engine

On the base of WECS(Wrtsil Electronic Control System) and the propulsion control system of a RT-Flex60C large intelligent low-speed diesel engine,using "cylinder moving method" to generate the sinmulation signals for exhaust valve lift,with the independently developed real-time simulation unit and signal acquiring unit,a HIL(Hardware In the Loop) simulation test platform of the electrically controlled exhaust valves for large intelligent diesel engine is built.The signals of a servo oil press、a exhaust valve lift,a exhaust valve open control,exhaust valve close controls and a air spring pressure can be acquired on the simulation test platform.The experimental results indicate that the performance of the platform is stable and reliable,which truly reflects the diesel engine working process and the characteristic of VEO(Variable Exhaust Opening) and VEC(Variable Exhaust Closing) on-line with the real diesel engine.The platform provides the good conditions for the electrically controlled exhaust valves characteristic analysis,the actuator performance verification,the control system testing for the large intelligent low-speed diesel engine.