Vehicle handling control of an electric vehicle using active torque distribution and rear wheel steering

2017 ◽  
Vol 74 (4) ◽  
pp. 319 ◽  
Author(s):  
Husain Kanchwala ◽  
Annika Stensson Trigell
Keyword(s):  
Electric Vehicle ◽  
Rear Wheel ◽  
Torque Distribution ◽  
Vehicle Handling

A Torque Vectoring Control Logic for Active High Performance Vehicle Handling Improvement

2007 ◽  
Author(s):  
Federico Cheli ◽  
Leonidas Kakalis ◽  
Andrea Zorzutti
Keyword(s):  
High Performance ◽  
Rear Wheel ◽  
Control Logic ◽  
Torque Distribution ◽  
Vehicle Handling ◽  
Engine Torque ◽  
Yaw Control ◽  
Wheel Drive ◽  
The Right ◽  
Yaw Moment

The most common automotive drivelines transmit the engine torque to the driven axle through the differential. Semi-active versions of such device ([10], [11], [12]) have been recently conceived to improve vehicle handling at limit and in particular maneuvers. All these differentials are based on the same structural hypothesis of the passive one but they try to manipulate the vehicle dynamics controlling a quantity which was fixed in the passive mechanisms. In this way it’s possible to control the amount of the stabilizing torque but it’s not possible to apply it in both directions. This fact is a great draw drawback of the semi-active differential because a complete yaw control can’t be developed. On the other hand, active differentials [17] can both apply the best yaw moment (in terms of amplitude) and do this with the right sign. Although classic active differentials are greatly versatile, they can’t (or hardly can) reproduce an extreme torque distribution as 0–100% when there is not a μ-split condition. That is because there is always a bias value due to the presence of a gear that has to be decreased by active clutch action. And these clutches are often not able to do that. The most innovative device presented in the last years is the Super Handling-All Wheel Drive (SH-AWD) by Honda ([2], [3], [4], [5]). It can freely distribute the drive torque to the desired wheel, maintaining one of them in free rolling condition, if this is necessary. This flexibility in the lateral torque distribution can hugely increase the vehicle manoeuvrability. Author has carried out a feasibility study to evaluate the handling improvement due to such a device on a high performance rear wheel drive vehicle normally equipped with a semi-active differential.

Design of Torque Distribution Strategy for Four-Wheel-Independent-Drive Electric Vehicle

2020 ◽  
Vol 54 (6) ◽  
pp. 501-512
Author(s):  
Chuanwei Zhang ◽  
Rongbo Zhang ◽  
Rui Wang ◽  
Bo Chang ◽  
Jian Ma
Keyword(s):  
Electric Vehicle ◽  
Torque Distribution ◽  
Distribution Strategy

Development of the Control Strategy for an Innovative 4WD Device

2006 ◽  
Author(s):  
Federico Cheli ◽  
Paolo Dellacha` ◽  
Andrea Zorzutti
Keyword(s):  
Automotive Industry ◽  
Controller Design ◽  
Rear Wheel ◽  
Front Axle ◽  
Torque Distribution ◽  
Actuation System ◽  
Wheel Drive ◽  
Wet Clutch ◽  
The One ◽  
Engine Crankshaft

The potentialities shown by controlled differentials are making the automotive industry to explore this field. While VDC systems can only guarantee a safe behaviour at limit, a controlled differential can also increase the handling performance. The system derives from a rear wheel drive architecture with a semi-active differential, to which has been added a controlled wet clutch that directly connects the front axle and the engine crankshaft. This device allows distributing the drive torque between the two axles, according to the constraints due to kinematics and thermal problems. It can be easily understood that in this device the torque distribution doesn’t depend only from the central clutch action, but also from the engaged gear. Because of that the central clutch controller has to consider the gear position too. The control algorithms development was carried on using a vehicle model which can precisely simulate the handling response, the powertrain dynamic and the actuation system behaviour. A right powertrain response required the development of a customize library in Simulink. The approach chosen to carry on this research was the one used in automotive industry nowadays: an intensive simulation campaign was executed to realize an initial controller design and tuning.

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