Model migration based battery power capability evaluation considering uncertainties of temperature and aging

2019 ◽  
Vol 440 ◽  
pp. 227141 ◽  
Author(s):  
Xiaopeng Tang ◽  
Yujie Wang ◽  
Ke Yao ◽  
Zhenwei He ◽  
Furong Gao
Keyword(s):  
Battery Power ◽  
Model Migration ◽  
Capability Evaluation ◽  
Power Capability

Cost-Effective Energy Management for Hybrid Electric Heavy-Duty Truck Including Battery Aging

2013 ◽  
Author(s):  
T. H. Pham ◽  
P. P. J. van den Bosch ◽  
J. T. B. A. Kessels ◽  
R. G. M. Huisman
Keyword(s):  
Energy Management ◽  
Combustion Engine ◽  
Life Time ◽  
Battery Life ◽  
Heavy Duty ◽  
Energy Management Strategy ◽  
Battery Power ◽  
Battery Capacity ◽  
Hybrid Electric ◽  
Power Capability

Battery temperature has large impact on battery power capability and battery life time. In Hybrid Electric Heavy-duty trucks (HEVs), the high-voltage battery is normally equipped with an active Battery Thermal Management System (BTMS) guaranteeing a desired battery life time. Since the BTMS can consume a substantial amount of energy, this paper aims at integrating the Energy Management Strategy (EMS) and BTMS to minimize the overall operational cost of the truck (considering diesel fuel cost and battery life time cost). The proposed on-line strategy makes use of the Equivalent Consumption Minimization Strategy (ECMS) along with a physics-based approach to optimize both the power split (between the Internal Combustion Engine (ICE) and the Motor Generator (MG)) and the BTMS’s operation. The strategy also utilizes a quasi-static battery cycle-life model taking into account the effects of battery power and battery temperature on the battery capacity loss. Simulation results present an appropriate strategy for EMS and BTMS integration, and demonstrate the trade-off between the total vehicle fuel consumption and the battery life time.

Real time battery power capability estimation

2012 ◽  
Author(s):  
R. D. Anderson ◽  
Yanan Zhao ◽  
Xu Wang ◽  
Xiao Guang Yang ◽  
Yonghua Li
Keyword(s):  
Real Time ◽  
Battery Power ◽  
Power Capability

Dynamic Performance Evaluation of a Parallel Manipulator with Non Axial Symmetrical Characteristics by Computing the Respective Actuating Joint Capability

2012 ◽  
Vol 2 (4) ◽  
pp. 1-14
Author(s):  
Yongjie Zhao ◽  
Yanling Tian
Keyword(s):  
Performance Evaluation ◽  
Parallel Manipulator ◽  
Dynamic Performance ◽  
Parallel Manipulators ◽  
Joint Torque ◽  
Power Indices ◽  
Joint Power ◽  
Symmetrical Structure ◽  
Capability Evaluation ◽  
Power Capability

Unlike the traditional Gough-Stewart platform with axial symmetrical structure, a parallel manipulator consists of non axial symmetrical structure has non axial symmetrical characteristic in the whole reachable workspace. This paper presents the joint capability evaluation of a parallel manipulator with non axial symmetrical characteristics. A series of velocity, torque and power indices are presented. The torque indices combining the acceleration, velocity, and gravity components of the dynamic model are used to evaluate the respective joint torque capability. The power indices corresponding to the torque indices are also adopted to evaluate the respective joint power capability. The joint capability evaluation of the parallel manipulator is carried out through computational analysis and simulation with the velocity, torque and power indices. It is shown that the respective actuating joint capabilities of the parallel manipulator are not uniform due to the non axial symmetrical structure. Thus the performance evaluation of this type of parallel manipulator must be performed by analyzing the respective joint capability. By means of these indices with obvious physical meanings, it is possible to control the respective joint capability of the parallel manipulator. The indices are general and can be used for the other types of parallel manipulators.

The joint velocity, torque, and power capability evaluation of a redundant parallel manipulator

Robotica ◽  
2010 ◽  
Vol 29 (3) ◽  
pp. 483-493 ◽  
Author(s):  
Yongjie Zhao ◽  
Feng Gao
Keyword(s):  
Parallel Manipulator ◽  
Parallel Manipulators ◽  
Dynamic Capability ◽  
Power Indices ◽  
Capability Indices ◽  
Capability Evaluation ◽  
Power Capability ◽  
Joint Velocity

SUMMARYThe evaluation of joint velocity, torque, and power capability of the 8-PSS redundant parallel manipulator is investigated in this paper. A series of new joint capability indices with obvious physical meanings are presented. The torque index used to evaluate the respective joint dynamic capability of the redundant parallel manipulator is decoupled into the acceleration, velocity, and gravity term. With these velocity, torque, and power indices, it is possible to control the respective joint capability of the redundant parallel manipulator in different directions. The indices have been applied to evaluate the joint capability of the redundant parallel manipulator by simulation. They are general and can be used for other types of parallel manipulators.

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