Kinematic Analysis of Tractor-Semitrailer with Split Fifth Wheel Coupling During Low Speed Turning Maneuvers

Jogi, Ajith; Chandramohan, S.

doi:10.4271/2017-01-1554

Cited by 7 publications

(5 citation statements)

References 2 publications

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“…The former takes care of articulation, whereas the latter allows the vertical load transfer from the semitrailer to the tractor even when the vehicle is articulating. Studies have shown that the SFWC, when equipped on the conventional tractor-semitrailer, reduces maximum off-racking by up to 21% for a circular manoeuvre [4]. When analysed for 90º and 180º turning manoeuvre, it was found to reduce the maximum off-racking by up to 13.9% and 14.7% respectively [7].…”

Section: Sfwcmentioning

confidence: 99%

“…Steering the semitrailer axle is one of the effective methods for reduction of off-tracking; however, it includes a complex system to control the steering, which makes it expensive. Jogi and Chandramohan [4] have developed a new hitch mechanism, termed Split fifth wheel coupling (SFWC) which reduces the maximum off-tracking by a significant margin. SFWC is a passive mechanism without the inclusion of complex systems.…”

Section: Introductionmentioning

confidence: 99%

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Handling Evaluation of Tractor-semitrailer with Split Fifth Wheel Coupling Undergoing an ISO Double Lane Change Manoeuvre

Jogi¹,

Chandramohan²,

Dash³

2021

Proceedings of the 10th ECCOMAS Thematic Conference on MULTIBODY DYNAMICS

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Tractor-semitrailers face the issue of off-tracking which restricts their movement through congested areas. One of the innovative and passive methods to reduce offtracking in tractor-semitrailers is to implement a Split fifth wheel coupling (SFWC). Studies show that off-tracking is reduced by up to 21% for a circular turning manoeuvre. The handling performance of the tractor-semitrailer with SFWC is not evaluated yet and hence needs to be ad-dressed. In the present work, in order to assess the handling performance of the vehicle with SFWC, simulations are carried out for ISO double lane change manoeuvre at various speeds. The results are compared with those of the Conventional fifth wheel coupling (CFWC) model to understand the relative performance of the tractor-semitrailer with SFWC. The results show that the performance of tractor-semitrailers with SFWC is on par with that of vehicles with CFWC at lower speeds; in fact, for speeds below 40 kmph, the lateral acceleration experienced by the semitrailer of SFWC vehicle is less compared to that of CFWC vehicle. However, it becomes a little unstable at higher speeds. With the development of stability control systems like Electronic stability control (ESC), optimized for tractor-semitrailers with SFWC, their performance would improve.

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Section: Sfwcmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Handling Evaluation of Tractor-semitrailer with Split Fifth Wheel Coupling Undergoing an ISO Double Lane Change Manoeuvre

Jogi¹,

Chandramohan²,

Dash³

2021

Proceedings of the 10th ECCOMAS Thematic Conference on MULTIBODY DYNAMICS

Self Cite

View full text Add to dashboard Cite

show abstract

“…The PSO algorithm worked to optimize the gain parameter values starting from their initial settings, with the objective of achieving a load transfer response that would closely match the reference value. This optimization process involved minimizing a fitness function that would quantify the error in load transfer between the model and the reference value, as described in Equation (11). In this scenario, the position of each particle would correspond to the variables being optimized, which in this case, amounted to five.…”

Section: Optimization Of Controller Gains Using Particle Swarm Optimi...mentioning

confidence: 99%

“…Previous research found that the translational motion was insignificant because it did not affect the vehicle's stability in everyday driving. However, later researchers found that the hitch point was where the load was being transferred back and forth in their internal force system [8] - [11]. A small degree of pitch angle was insufficient to counter the load transfer and stabilize the vehicle during harsh braking.…”

Section: Introductionmentioning

confidence: 99%

Development of a Dynamic Hitch Lift Controller using a Hybrid Control Strategy in A Heavy Combination Vehicle

Abdul Manaf,

Abu Bakar,

Hudha

et al. 2024

Int. J. Automot. Mech. Eng.

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This study presents a novel hybrid control strategy for the active hitch system, named the Dynamic Hitch Lift (DHIL), comprising a hybrid controller and a force actuator. The controller was designed to mitigate longitudinal load transfer in heavy combination vehicles by reducing the semitrailer pitch rate and rejecting the pitch moment, assisted by the virtual Skyhook moment. The new controller can calculate the desired force of the DHIL actuator to counter incoming load transfer during harsh braking exceeding 0.5 g braking deceleration. The proposed controller was assessed using a verified 12-degrees-of-freedom tractor-semitrailer model in harsh braking tests across different vehicle configurations. The first evaluation involved a stability test to demonstrate the stability of the controller in reducing load transfer across different vehicle configurations. The second evaluation was on controller performance, which revealed that the dynamic vehicle response has efficiently reduced load transfer by up to 9.14%. The third evaluation has focused on the DHIL actuator performance, which indicated that the actuator generated a force of 159,197 N, which translated into a stepper motor torque of 1,695 Nm at a speed of 1,000 rpm. Simulation results affirmed that the proposed DHIL controller was stable and could effectively reduce longitudinal load transfer in heavy combination vehicles during harsh braking.

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“…In recent years, large articulated vehicles have become larger and longer, and face the problem of off-tracking, which is the difference in the path radius between the vehicle's front and rear axles during steering. Jogi et al [2] suggested a way to improve this off-tracking problem. Li et al [3] suggested a way to optimize the trajectory of articulated vehicles in the presence of obstacles.…”

Section: Introductionmentioning

confidence: 99%

Path Planning for Perpendicular Parking of Large Articulated Vehicles Based on Qualitative Kinematics and Geometric Methods

Han

2023

Vehicles

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Since large articulated vehicles have uncertainties in trailer articulation angle as well as dynamic complexity, it is not easy to accurately establish a reliable motion plan. In this paper, two geometric path plans constructed based on the empirical rules of driving experts are presented so that articulated vehicles can automatically perform perpendicular parking on a reverse path. By analyzing the empirical parking methods of professional drivers, these path plans were constructed by appropriately combining several standardized simple basic motions to facilitate implementation in real vehicles. In addition, the path plans included appropriate complementary motions to effectively respond to uncertainties arising from articulation angles, etc. The complementary motions developed in this study are based on the results of qualitative analysis on the behavior of articulated vehicles. The usefulness of the proposed articulated vehicle parking method has been proven through hundreds of experimental tests using a scaled model automated vehicle.

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Kinematic Analysis of Tractor-Semitrailer with Split Fifth Wheel Coupling During Low Speed Turning Maneuvers

Cited by 7 publications

References 2 publications

Handling Evaluation of Tractor-semitrailer with Split Fifth Wheel Coupling Undergoing an ISO Double Lane Change Manoeuvre

Handling Evaluation of Tractor-semitrailer with Split Fifth Wheel Coupling Undergoing an ISO Double Lane Change Manoeuvre

Development of a Dynamic Hitch Lift Controller using a Hybrid Control Strategy in A Heavy Combination Vehicle

Path Planning for Perpendicular Parking of Large Articulated Vehicles Based on Qualitative Kinematics and Geometric Methods

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