基于支持向量回归机的发动机/直升机扭矩超前控制

孙立国; 孙健国; 张海波; 陈国强

基于支持向量回归机的发动机/直升机扭矩超前控制

南京航空航天大学能源与动力学院,南京 210016

基金项目: 航空支撑科技基金(04B52006)

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- 文章访问数: 1840
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- 被引次数: 0
出版历程
- 收稿日期: 2010-02-05
- 修回日期: 2010-05-18
- 刊出日期: 2011-03-28

Torque feed-forward control of engine / helicopter system based on support vector regression

College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

摘要

摘要: 主要研究涡轴发动机转速按扰动补偿控制问题,提出了一种基于迭代约简最小二乘支持向量回归机算法和模型预测机制的直升机扭矩动态超前预测模型设计方法.首先用迭代约简最小二乘支持向量回归机设计了旋翼扭矩按飞行状态和操纵量估计的非参数动态反馈模型,然后设置了扭矩模型预测机制,以获得扭矩的超前动态信息.接着利用扭矩超前预测信息设计了涡轴发动机的按扭矩补偿控制器.其中,为充分利用所预测扭矩的动态信息,发动机前馈补偿控制器使用了比例加微分环节.最后,综合仿真验证表明该控制方案能较好地抑制直升机操控过程中大的扭矩扰动对涡轴发动机造成的不利影响,相比于传统的按总距补偿方案能显著降低功率涡轮转速下垂量10%以上.
- 发动机/直升机 /
- 支持向量机 /
- 最小二乘 /
- 扭矩预测 /
- 按扰动补偿
Abstract: Turbo-shaft engine's controller design based on the compensation from disturbance was mainly studied in this article.A torque prediction model design scheme was proposed based on recursive reduced least squares support vector regression(RR-LSSVR)algorithm and model prediction procedure.Firstly,reduced least squares support vector regression was utilized to train the dynamic estimation nonparametric model of torque by using the handling input and flight state variables as training data.Then,a prediction procedure was arranged to obtain the torque information in advance.After that,the turbo-shaft engine's compensator was implemented using the former predicted torque information.In order to take full advantage of the disturbance signal and its dynamic information,the proportional-differential form was adopted in the compensator design.Finally,simulation of integrated helicopter/turbo-shaft engine system shows that the control scheme has better dynamic disturbance rejection ability than traditional system,it can decrease the droop of power turbine's speed more than 10%.
- engine/helicopter /
- support vector machine /
- least squares /

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参考文献(13)

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