| 发动机电磁气门驱动的LQR法软着陆控制 |
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| 引用本文： | 黄荣纬,赵雨东. 发动机电磁气门驱动的LQR法软着陆控制[J]. 清华大学学报(自然科学版), 2007, 47(8): 1338-1342 |
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| 作者姓名： | 黄荣纬 赵雨东 |
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| 作者单位： | 清华大学,汽车安全与节能国家重点实验室,北京,100084;清华大学,汽车安全与节能国家重点实验室,北京,100084 |
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| 摘 要： | 为减轻发动机电磁气门驱动(electromagnetic valveactuation,EVA)的落座冲击,对EVA初始化和过渡过程的前期都用开环控制,运动后期,即当衔铁/气门接近落座位置时采用线性二次调节器(linear quadratic regulator,LQR)法控制落座速度,并对作者研制的EVA建立了数学模型,将其在落座位置附近线性化,编制了控制软件。在EVA实验测试系统上实现了初始化、单次过渡过程控制以及EVA连续动作控制。LQR法的3个状态量是实测的衔铁/气门位移、速度和线圈电流。结果表明,EVA初始化、单次过渡过程以及EVA连续动作的落座速度分别是0.05 m/s、0.06m/s和0.20 m/s。
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| 关 键 词： | 汽车发动机 气门机构 可变气门驱动 电磁气门驱动 |
| 文章编号： | 1000-0054(2007)08-1338-05 |
| 修稿时间： | 2006-06-30 |
Soft landing control of electromagnetic valve actuation for engines by using LQR |
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| HUANG Rongwei,ZHAO Yudong. Soft landing control of electromagnetic valve actuation for engines by using LQR[J]. Journal of Tsinghua University(Science and Technology), 2007, 47(8): 1338-1342 |
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| Authors: | HUANG Rongwei ZHAO Yudong |
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| Abstract: | To eliminate valve seating impacts of electromagnetic valve actuation (EVA) for automotive engines,the early stages of both the initialization and the transition are open-loop controlled in EVA systems.The later stage when the armature/valve closes to the seating position is then controlled using a linear quadratic regulator(LQR).A control system was developed based on an EVA control model linearized near the seating position.Tests of the EVA show a seating velocity of 0.05 m/s during initialization,0.06 m/s during a one way transition,and 0.20 m/s during continuous operation. |
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| Keywords: | automotive engines valvetrain variable valve actuation electromagnetic valve actuation |
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