Estimation of the Ease in Control of a Perspective Tractor’s  Selfpropelled Chassis

Подригало, М.А.; Boboshko, Oleksandr; Razarenov, Leonid; Zakapko, Оlexandr; Zinchenko, Olena; Krasnokutskyi, Volodymir

doi:10.20998/2079-0775.2020.2.10

Cited by 2 publications

(5 citation statements)

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“…and the front driving wheels). Equations ( 1)-( 3) in [21] were obtained from the condition of equality of the tangential reactions on the left and right wheels (…”

Section: Engineeringmentioning

confidence: 99%

“…). In [21] without taking into account the inertial moments of the wheels, the indicated tangential reactions of the road are determined. With an equal distribution of torques between the left and right wheels:…”

Section: Engineeringmentioning

confidence: 99%

“…However, the papers [12,20] did not consider the use of the difference in tangential reactions on the wheels of the front swivel axle to control the processes of entering and exiting the turn. This was also not considered in [21] when assessing the ease of control of the front swivel axle of a promising tractor self-propelled chassis. The use of an electric motor-wheels with separate control on the front swing axle allows solving this problem.…”

Section: Engineeringmentioning

confidence: 99%

“…The dynamics of a wheeled vehicle with a front swivel axle was studied in [12,20,21]. The scheme of rotation of a two-axle vehicle in plan and the scheme of the action of forces on it with the front swing axle are shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Improving the maneuverability of vehicles by using front swivel axles with separate electric wheels

Podrigalo

Artiomov²,

Garmash

et al. 2023

Eureka: PE

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There is a need for vehicles to maneuver when there are traffic jams, to overcome narrow streets and various obstacles. This leads to increased requirements for dynamism and maneuverability of vehicles. The authors present the results of the development and research of the steering control of the vehicle, which provides increased maneuverability. Such circumstances significantly affect the increase in maneuverability of wheeled vehicles, including tractors, for which the use of front suspension axles is possible in terms of layout. The use of a front swing axle with electric motor-wheels with separate control will increase the maneuverability of a two-axle vehicle and minimize the steering effort when turning. When solving the task, a mathematical model of the movement of the vehicle on a turn was created. The forces in the contact of the wheels with the road surface were determined, which made it possible to determine the forces and moments of resistance to the rotation of the front axle. Rational laws of control of turning the front axle, providing minimal resistance to the movement of the vehicle, were obtained. A vehicle turning control option is proposed, in which the wheels of the outer and inner sides are alternately braked when the vehicle enters and exits the turn. In addition, it is possible to alternately create a torque difference on the wheels of the outer and inner sides of the front axle. Using the proposed turn control options, it is possible to create a multi-axle vehicle with a rocking axle. The materials of the article on the controllability of vehicles depending on the design of the steering and front axle are of interest to researchers, designers of mobile equipment, graduate students and students of engineering specialties

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“…and the front driving wheels). Equations ( 1)-( 3) in [21] were obtained from the condition of equality of the tangential reactions on the left and right wheels (…”

Section: Engineeringmentioning

confidence: 99%

Section: Engineeringmentioning

confidence: 99%

Section: Engineeringmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Improving the maneuverability of vehicles by using front swivel axles with separate electric wheels

Podrigalo

Artiomov²,

Garmash

et al. 2023

Eureka: PE

View full text Add to dashboard Cite

show abstract

“…Однак у роботах [3,5,11] не розглянуто вплив зміщення осі вертикального валу приводу повороту переднього мосту у напрямку повздовжньої осі на стабілізуючий момент.…”

Section: вступunclassified

Assessment of the Stability of the Front Pivot Axle During Steady-State Motion of a Tractor Self-Propelled Chassis

Podrigalo¹,

Razarenov²,

Закапко³

2023

МіСАПР

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In known scientific and technical literature, insufficient attention is paid to the study of dynamic processes of wheeled vehicles with a steering front axle. The use of front swivel axle on a self-propelled chassis makes it possible to minimize the moment of resistance to turning and reduce the wear of front wheel tires in comparison with rotary guide wheels. This modernization can provide a wider range of attachments for mechanized work equipment. The aim of this work is to increase the stability of the rectilinear steady-state motion of a self-propelled tractor chassis by creating stabilizing moments on the front pivot axle by shifting the axis of rotation of the front axle in the direction of the longitudinal axis of the machine. The stability of the rectilinear steady-state motion of a self-propelled tractor chassis is investigated when creating stabilizing moments on the front steering axle by shifting the vertical axis of rotation of the front axle in the direction of the longitudinal axis of the machine. This scientific article shows that when the steering axle moves, it is possible to reduce the lateral force on the front axle to zero, which makes it possible to reduce the moment of resistance to turning. A straight-line steady-state movement of a tractor is considered, where a violation of the stability of the front steering axle may occur during a short-term impact on an obstacle on the road. In some cases, the angular acceleration and angular velocity of the bridge in the road plane may be the exciting factor. The loading scheme of a front swing bridge under the action of an exciting angular acceleration is determined. The calculation of the effect of the exciting factors on the power steering cylinder is presented. The stabilizing moment that occurs when the axis of the vertical shaft of the front steering axle drive is displaced is determined. The differential equation of the front axle's circular motion was analyzed, which revealed its stability under the action of short-term excitatory forces in the rectilinear steady-state motion of the self-propelled chassis. An estimation of the motion of the front steering axle of a self-propelled chassis is presented, with the determined proportionality coefficients and coefficients of the differential equation, which describes the stable motion of the front steering axle in the steady-state rectilinear motion of the machine under the action of short-term disturbing forces. Keywords: self-propelled chassis, front swivel axle, stability, stabilizing moment, steady-state motion

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Estimation of the Ease in Control of a Perspective Tractor’s Selfpropelled Chassis

Cited by 2 publications

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Improving the maneuverability of vehicles by using front swivel axles with separate electric wheels

Improving the maneuverability of vehicles by using front swivel axles with separate electric wheels

Assessment of the Stability of the Front Pivot Axle During Steady-State Motion of a Tractor Self-Propelled Chassis

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