摘要
对船用天然气发动机空燃比和转速协调控制进行了研究,根据船用天然气发动机的控制需求设计了相应的软件和硬件,并在控制策略中引入了扭矩量,提出了三闭环双前馈的控制架构。基于玉柴6K型天然气发动机进行了配机试验,在固定负载突变转速的工况下,发动机能在3 s内能达到目标转速并趋于稳定,最大超调量在4%以内,稳态时转速波动率在0.8%左右。在固定转速突加突卸负荷时,转速能在8s内趋于稳定,瞬态调速率为在6%以内,稳态时的转速波动率在0.9%左右,验证了所提出控制策略的可行性。
The coordinated control of air-fuel ratio and speed of marine natural gas engine is studied. The corresponding software and hardware according to the control requirements of marine natural gas engine are designed. The torque in the control strategy is introduced, and the three-closed-loop control architecture is put forward. Based on the machine distribution test of Yuchai 6K type natural gas engine, under the condition of sudden change of fixed load speed, the engine can reach the target speed within 3 s and become stable. The maximum overshoot is within 4%, and the stable speed fluctuation is around 0.8%. When the load is suddenly loaded and unloaded at the fixed speed, the speed tends to be stable within 8 s, the transient adjustment rate is within 6%, and the steady speed fluctuation rate is around 0.9%, which verifies the feasibility of the proposed control strategy.
作者
姚崇
胡星睿
赵国锋
蒋尚君
YAO Chong;HU Xingrui;ZHAO Guofeng;JIANG Shangjun(Power and Energy Engineering,Harbin Engineering University,Harbin 150001,China)
出处
《船舶工程》
CSCD
北大核心
2020年第3期93-99,122,共8页
Ship Engineering
关键词
船用天然气发动机
空燃比
转速
控制策略
软硬件设计
marine natural gas engines
air-fuel ratio
speed
control strategy
hardware and software design
