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Optimal‑Control‑Based Eco‑Driving Solution for Connected Battery Electric Vehicle on a Signalized Route

Automotive Innovation 2023年第4期6卷 586-596页

作者： Hafiz Muhammad Yasir Naeem Yasir Awais Butt Qadeer Ahmed Aamer Iqbal Bhatti Control and Signal Processing Research Group(caspr) Department of Electrical EngineeringCapital University of Science and Technology(CUST)Islamabad ExpresswayKahuta RoadZone‑V IslamabadIslamabadPakistan Department of Electrical Engineering National University of Technology(NUTECH)IslamabadPakistan Center for Automotive Research Ohio State UniversityColumbusOHUSA

Speed advisory systems have been used for connected vehicles to optimize energy consumption.However,for their practical utilization,presence of preceding vehicles and signals must be taken into account.Moreover,for Battery Electric Vehicles(BEVs),factors that deteriorate battery’s life cycle and discharging time must also be considered.This paper proposes an eco-driving control for connected BEV with traffic signals and other safety constraints.Traffic signals are considered as interior point constraints,while inter-vehicle distance with preceding vehicles,vehicle speed and battery charging/discharging limits,are considered as state safety constraints.Backward-forward simulator based Speed Guidance Model is applied to follow the optimized velocity under powertrain safety limitations.Effectiveness of the proposed methodology is tested on a 5.3-km route in Islamabad,Pakistan.Real traffic data using Simulation of Urban Mobility under different driving scenarios is considered.Using the proposed method,around 21% energy can be saved compared to the preceding vehicles that followed their random velocities under the same traffic and route conditions.This means the EV controlled by the proposed method can have longer driving range.Furthermore,the host BEV has crossed signals during their green time without collision with preceding vehicles.Low charging rates and terminal Depth of Discharge indicate less number of charging cycles,thus proving the usefulness of the proposed solution as battery’s lifesaving strategy.

关键词： Eco-driving First-order Thevenin model Inter-vehicle safety constraint Interior point constraints

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Framework for fault-tolerant speed tracking control of gasoline engines using the first principle-based engine model

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Journal of Control and Decision 2023年第4期10卷 560-571页

作者： Raheel Anjum Ahmed Yar Ghulam Murtaza Qadeer Ahmed Aamer I.Bhatti Controls and Signal Processing Research Group(caspr) Capital University of Science and TechnologyIslamabadPakistan Department of Mechanical Engineering College of E&MENational University of Sciences and TechnologyIslamabadPakistan Center for Automotive Research The Ohio State UniversityColumbusOHUSA Department of Electrical Engineering Capital University of Science and TechnologyIslamabadPakistan

Optimal engine torque management,a fundamental objective,depends predominantly on engine speed tracking performance.It ensures to attain desired speed profile in the presence of uncertainties,disturbances and malfunctions.On the other hand,certain requirements such as emissions control,fuel efficiency and drivability are degraded in case of poorspeed tracking.Furthermore,constraints on engine speed tracking performance are even more stringent for hybrid power-train architecture as crankshaft speed and engine torque are the basic variables for coordinated control.Speed tracking is also considered essential for gearshift control ofthe automatic transmission.In this research work,a framework for fault-tolerant speed tracking of the gasoline engine is proposed using the First Principle-based Engine Model(FPEM).A high-fidelity direct relationship between fuel injection input and engine speed is derived by the transformation of FPEM.Fault is induced in the fuel injection subsystem to generate the torque imbalance.Using the proposed framework,a second-order sliding mode-based control technique is applied to track desired speed profile by mitigating the faultsin the fuel injection subsystem.Reference data acquired from the engine test rig is used to demonstrate the offline validity and fault tolerance capabilities of the proposed framework in MATLAB/Simulink.

关键词： Engine speed tracking fault-tolerant control gasoline engines sliding mode control

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Smooth Sliding Mode Control for PEM Fuel Cell System

Smooth Sliding Mode Control for PEM Fuel Cell System

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第24届中国控制与决策会议

作者： S. Saqib H. Rizvi A. I. Bhatti Qudrat Khan Qadeer Ahmad Asad Hameed Zahid Butt caspr Dept.of Electronics Engineering Mohammad Ali Jinnah University

A smooth sliding mode control （SSMC） is applied to tackle the problem of PEM fuel cell system output voltage stabilization problems along with controlling oxygen excess ratio. The oxygen excess ratio is controlled in the inner control loop using PID while the regulation of output voltage is being treated in the outer loop through smooth sliding mode control. The control is applied on the validated nonlinear model of the PEM fuel cell system. The simulation results show that the scheme with SSM control provides same performance as compared to higher order sliding mode control （Super twisting Algorithm） in output voltage stabilization and also in minimizing the fuel consumption.

关键词： Smooth Sliding Mode Control PEM Fuel Cell System

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