Control design for residual gas fraction in engine based on stochastic logical dynamics
Control design for residual gas fraction in engine based on stochastic logical dynamics
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DOI：
10.1109/sice.2015.7285341
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发表时间：
2015-07
期刊：
影响因子：
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通讯作者：
Yuhu Wu;T. Shen;C. Bae
中科院分区：
文献类型：
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作者：
Yuhu Wu;T. Shen;C. Bae
本文考虑发动机的随机性，提出了一种最优控制方案。首先，考虑有限状态随机逻辑动力系统的滚动时域最优控制问题。基于转移概率和矩阵的半张量积，导出了求解滚动时域控制问题的动态规划算法的简洁代数表达式。然后，在随机逻辑动力学模型框架下，以可变配气相位为控制执行元件，设计了一个最优控制器，以减小残余气体分数的变化。在汽油机台架上进行了验证。
In this paper, the optimal control scheme for residual gas fraction is proposed considering the stochastic property in engine. Initially, the receding horizon optimal control problem for the stochastic logical dynamical systems with finite states is considered. Based on transition probability and semi-tensor product of matrix, a succinct algebraic expression of dynamic programming algorithm is derived to solve the receding horizon control problem. Then, an optimal controller designed to reduce the variation of residual gas fraction in the framework of stochastic logician dynamical model, in which variable valve timing is taken as the control actuator. Validation results are demonstrated which conducted on a full-scaled gasoline engine test bench.