The air path system dynamics is critical for the performance and emissions of turbo charged diesel engines. This paper proposes to approximate the inherently nonlinear dynamics of the air path by a linear parameter va...
详细信息
The air path system dynamics is critical for the performance and emissions of turbo charged diesel engines. This paper proposes to approximate the inherently nonlinear dynamics of the air path by a linear parameter varying (LPV) model and to design the control law using a pole placement method for LPV systems. The plant properties and nominal closed loop system performance are investigated. Simulation results show that the controller can achieve satisfied performance. The control performance is validated on a dynamical test cell equipped with a BMW M47 diesel engine
In this paper a robust adaptive pole placement method for a class of linear parameter varying (LPV) system based on input-output description is constructed after the LPV system model, including its un-modeled error mo...
详细信息
In this paper a robust adaptive pole placement method for a class of linear parameter varying (LPV) system based on input-output description is constructed after the LPV system model, including its un-modeled error model term, is presented. The recursive least square estimation algorithm with dead zone is applied for the parameter estimation. The robust stability of closed-loop system is analyzed and the robust bound is derived. One simulation example illustrates the effectiveness of the control algorithm and demonstrates that the adaptive control based on LPV model can achieve better performance than the controller based on linear time varying (LTV) model
In this paper, the use of LPV models for the dynamic model of nitrogen oxides (NOx) produced by DI diesel engine based on measurement data is investigated. Engine emission control is an essential aspect to reduce the ...
详细信息
In this paper, the use of LPV models for the dynamic model of nitrogen oxides (NOx) produced by DI diesel engine based on measurement data is investigated. Engine emission control is an essential aspect to reduce the vehicle pollution and is usually achieved mostly by static maps, which are incapable to fulfill the rising demand of new and more strict emission standards in the future. LPV models can be seen as the natural dynamic extension of static maps. In this paper, the LPV local model of nitrogen oxides (NOx) is presented as well as the global model based on the fuzzy weighting approach
Torque estimation has an increasing importance in the field of automotive control, as most engine controllers rely on torque estimation today. In this paper a new approach based on a linear parameter varying (LPV) mod...
详细信息
Torque estimation has an increasing importance in the field of automotive control, as most engine controllers rely on torque estimation today. In this paper a new approach based on a linear parameter varying (LPV) mod...
详细信息
Torque estimation has an increasing importance in the field of automotive control, as most engine controllers rely on torque estimation today. In this paper a new approach based on a linear parameter varying (LPV) model is proposed. It relies on a non linear subspace identification method and exploits the natural dependency of many engine processes on the rotational speed, but does not use a physical model, which is very time consuming and difficult to obtain. To this end, first a LPV state space method is introduced and then experimental results are presented which show that the model exhibits high accuracy.
暂无评论