Structural Design and Simulation Optimization of New Type Telescoping Heavy Hydraulic Trailer Steering System

2012 ◽  
Vol 233 ◽  
pp. 47-50
Author(s):  
Rui Guo ◽  
Jing Yi Zhao ◽  
Yong Chang Wang ◽  
De Cai Han
Keyword(s):  
Power Consumption ◽  
Product Life Cycle ◽  
Simulation Optimization ◽  
Steering System ◽  
Front Axle ◽  
Steering Wheel ◽  
Pure Rolling ◽  
New Type ◽  
Turning Radius

The length variability of telescoping heavy hydraulic trailer wills casue friction and sliding, increasing drag torque and power consumption of steering, moreover, and reducing the security and reliability of steering, so the new type follow-up steering system is designed and studied. In order to reduce the turning radius and tire wear, the adjustable steering wheel structure and double front axle mechanism are designed. On this basis, the theoretical analysis of the steering system is carried out, and the mathematical model is established. The minimum error of actual and ideal angle is regarded as the optimization goal of pure rolling condition, and the simulation optimization and experimental research is done. The results show that: the steering structural optimization is feasible, the performance is optimal on the condition that the actual and ideal angle valves of inside and outside wheels of each axis are approximately equal in turning process, and can reflect the advantage of new follow-up steering system in lowering power consumption, improving product life cycle and other areas.

Research on Test and Simulation of New Type Steering System for Construction Machinery

2012 ◽  
Vol 241-244 ◽  
pp. 1974-1977
Author(s):  
Li Ying Ma ◽  
Nai Xing Liang ◽  
Yuan Wen Cao ◽  
Shao Xiong Gui
Keyword(s):  
System Simulation ◽  
Steering System ◽  
Testing System ◽  
Hydraulic Control ◽  
Paper Briefly ◽  
Construction Machinery ◽  
Test Platform ◽  
New Type ◽  
Turning Radius ◽  
Hydraulic Control System

This paper briefly analyzed the steering principle and electro-hydraulic control system of four wheel steering (4WS) test platform for construction machinery, and then performed a series of tests in various steering conditions. The experimental data acquisition, processing and analysis were achieved by the testing system so that transfer function of the system has been determined. And then with MATLAB/SIMULINK software the system simulation was given out. The results show that the turning radius of 4WS decreases about 20% than that of traditional two wheel steering (2WS). What’s more, the steering stability of 4WS is greatly improved. The result of this paper has certain theoretical value and good application prospect.

A New Hydraulic Power Steering System for Hybrid City Bus

2013 ◽  
Vol 321-324 ◽  
pp. 1562-1565 ◽  
Author(s):  
Zhen Lin Yang ◽  
Ren Guang Wang ◽  
Lin Tao Zhang ◽  
Chao Yu ◽  
Guang Kui Shi ◽  
...  
Keyword(s):  
Steering System ◽  
Steering Wheel ◽  
Hydraulic Pressure ◽  
Power Steering System ◽  
City Bus ◽  
Power Steering ◽  
Steering Mechanism ◽  
New Type ◽  
Type Power ◽  
Hydraulic Power Steering

A new type power steering system was developed for electric hybrid city bus. It is mainly composed of fluid reservoir, electric motor, steering pump, safety valve, solenoid, pressure sensor, hydraulic cylinder, braking air tank, controller, steering wheel, steering angle sensor, steering control valve, mechanical steering mechanism, steering power cylinder. Its main idea is based on using of pressure from braking air tank to push a cylinder to generate hydraulic pressure. It can provide enough pressure for steering needing timely. And the steering pump does not need working at the time of no steering requirement. The application of a new type power steering system can save energy to improve fuel efficiency.

Influence of Front Wheel Alignment Parameters on Handling Stability of Vehicle Based on Joint Simulation

2014 ◽  
Vol 716-717 ◽  
pp. 832-836
Author(s):  
Hui Wang ◽  
Xiao Zhi Wang
Keyword(s):  
Steering System ◽  
Front Wheel ◽  
Front Axle ◽  
Lateral Acceleration ◽  
Steering Wheel ◽  
Initial Alignment ◽  
Vehicle Handling ◽  
Joint Simulation ◽  
Hydraulic Steering ◽  
Lane Change Test

This paper uses AMESim software to establish simulation model of SGA170 mine truck full hydraulic steering system, and validates the correctness of the proposed model. Through the joint simulation, vehicle steady circular test, double lane change test and steering wheel angle input test are verified. By changing the initial alignment parameters of front axle, vehicle handling performance are tested through the same simulation test, and yaw velocity, and the curves of lateral acceleration and vehicle roll angle describing vehicle handling stability are obtained, which provides a reference for the design and improvement of the similar mine truck selection.

Modelling and Analysis for an Electric Power Assisted Steering System of Plug-In Hybrid Electric Car

2009 ◽  
Vol 419-420 ◽  
pp. 229-232
Author(s):  
Qing Liang Zeng ◽  
Yu Shan Li ◽  
Cheng Long Wang ◽  
Zhi Hai Liu
Keyword(s):  
Electric Power ◽  
Electric Vehicles ◽  
Electric Motor ◽  
Hybrid Electric Vehicles ◽  
Steering System ◽  
Front Axle ◽  
Rigid Body Dynamics ◽  
Steering Wheel ◽  
Mass Force ◽  
Hybrid Electric

Plug-in hybrid electric vehicles (PHEVs) have been seen as promising vehicles which have merits of hybrid electric vehicles and electric vehicles. Because of difficulties of plug-in hybrid electric vehicles’ development, it is necessary to study revamped method on the base of original car. Electric power steering (EPS) is an advanced steering system that uses an electric motor to provide steering assist. Because PHEVs are often on electric-electric operating mode, steering system power should be supplied with electric motor. Also, reconfigration of the power system including batteries results in added weight and the load change on front axle and rear axle. The steering characteristic of the revamped car are different from that of the original car. Based on the analysis and actual size, mass-force, etc. of the overall car and the parts of EPS, the multi-body dynamic model of the car equipped with EPS is established with multi-rigid-body dynamics analysing software (ADAMS). Based on the virtual prototype, simulation of steady state steering characteristic and transient state response characteristic of revamped car compared with original car under angulus step input of steering wheel have been finished. According to the simulation results, steering characteristic of the revamped car meets the design requirements. The research method is feasible.

scholarly journals ANALYSIS OF THE IMPACT OF VARIOUS PRESSURES IN THE VEHICLE WHEELS ON THE WHEEL GEOMETRY

2021 ◽  
Vol 1 (50) ◽  
pp. 210-220
Author(s):  
LEW K ◽  
Keyword(s):  
Automatic Device ◽  
Steering System ◽  
Front Axle ◽  
Air Pressure ◽  
Steering Wheel ◽  
The Road ◽  
Significant Difference ◽  
On The Road ◽  
Toe Angle ◽  
The Impact

The steering system in a vehicle is one of the main systems that ensures its controllability and is important for road safety. The steering system consists of two main mechanisms, namely the steering gear, the task of which is to convert the rotary motion into reciprocating motion, and the steering gear, the task of which is to ensure the correct steering of the vehicle. In this case, the steering system is interconnected with the suspension of the car, in which there are four main angles of the wheels that are responsible for the correct maneuverability of the vehicle, namely: camber angle, toe angle, angle of rotation of the axle of the fist and the angle of inclination of the pivot axis of the fist. Measuring the geometry of a vehicle's suspension has several interrelated purposes. One of them is the modification of the stability of the vehicle, that is, the effective impact on the maintenance of the vehicle on the road. Handling also depends on the geometry setting and ensures proper maintenance on the road. Well adjusted geometry ensures even tire wear on each axle. The purpose of the steering system is to maintain the correct position of the steering wheel in relation to the steering wheels. The tests were carried out in stationary conditions at the diagnostic station of the Rzeszow University of Technology using an automatic device for measuring and regulating the air pressure in the tires of the Unitrol PA-10K car and the Launch X-631 car wheel alignment system. The object of the study was a passenger car of the Opel Agila brand. The tests were carried out for various values of air pressure in the car wheels. Based on the above, the task was set - to demonstrate how incorrect air pressure in the wheels of a car changes the angles of inclination of the wheels of the car. When analyzing the obtained test results, it was found that the pressure in the wheels, different from the nominal, but the same in each wheel, does not significantly affect the change in the values of the parameters of the angles of inclination of the vehicle wheels. If the pressure in the wheels on one side of the vehicle drops by 1 bar, there is a significant difference in the camber angles of the front axle. Changes in the air pressure in one of the rear wheels of the car do not significantly affect the angles of inclination of the car wheels. KEY WORDS: AIR PRESSURE IN THE WHEELS, UNEVEN PRESSURE, WHEEL MOUNTING ANGLES, CAMBER AND TOE ANGLES, STEERING.

scholarly journals Optimization and Mathematical Calculation of Turning Radius for 4 Wheel Steering Systems in Maruti Suzuki Baleno

2019 ◽  
Vol 8 (11) ◽  
pp. 3961-3963
Keyword(s):  
Rear Axle ◽  
Work Load ◽  
Steering System ◽  
Front Axle ◽  
Common Mechanism ◽  
Operational Conditions ◽  
Wheel Turning ◽  
Efficient Performance ◽  
Mathematical Calculation ◽  
Turning Radius

Understeering in production vehicles is a common mechanism followed in day to days automobile industries. Rare cases have been recorded where over steering is implemented. Consider a vehicle that can automatically compensate for both the under steering and over steering issues, the concept will assist and enable the driver to experience nearly the neutral steering under the varying operational conditions. This paper deals with the introduction of rack and pinion mechanism, employed for the purpose of optimizing and mathematical calculation of turning radius for a 4 Wheel steering system equipped in the considered vehicle model MARUTI SUZUKI BALENO. This allows the conversion of the steering rotational motion into linear motion which enables effective wheel turning with minimum efforts applied by the driver. The power is transferred from the front axle to the rear axle by using a tie rod connected to a rack and pinion mechanism. The excessive work load on the front wheels and uneven tire wear results in a less efficient functioning of the vehicle. The purpose of this paper helps in enhanced and much efficient performance of the vehicle and reduces the maneuverer efforts.

scholarly journals Development of Estimation Force Feedback Torque Control Algorithm for Driver Steering Feel in Vehicle Steer by Wire System: Hardware in the Loop

2015 ◽  
Vol 2015 ◽  
pp. 1-17 ◽  
Author(s):  
Sheikh Muhammad Hafiz Fahami ◽  
Hairi Zamzuri ◽  
Saiful Amri Mazlan
Keyword(s):  
Control Algorithm ◽  
Force Feedback ◽  
Steering System ◽  
Front Axle ◽  
Torque Control ◽  
Steering Wheel ◽  
Hardware In The Loop ◽  
Linear Quadratic ◽  
Steering Feel ◽  
Steer By Wire

In conventional steering system, a feedback torque is produced from the contact between tire and road surface and its flows through mechanical column shaft directly to driver. This allows the driver to sense the steering feel during driving. However, in steer by wire (SBW) system, the elimination of the mechanical column shaft requires the system to generate the feedback torque which should produce similar performance with conventional steering system. Therefore, this paper proposes a control algorithm to create the force feedback torque for SBW system. The direct current measurement approach is used to estimate torque at the steering wheel and front axle motor as elements to the feedback torque, while, adding the compensation torque for a realistic feedback torque. The gain scheduling with a linear quadratic regulator controller is used to control the feedback torque and to vary a steering feel gain. To investigate the effectiveness of the proposed algorithm, a real-time hardware in the loop (HIL) methodology is developed using Matlab XPC target toolbox. The results show that the proposed algorithm is able to generate the feedback torque similar to EPS steering system. Furthermore, the compensation torque is able to improve the steering feel and stabilize the system.

scholarly journals Electronic Control System for Steer by Wire

2021 ◽  
Vol 9 (VI) ◽  
pp. 4161-4166
Author(s):  
Eeshan Ranade
Keyword(s):  
Electric Power ◽  
Engine Performance ◽  
Steering System ◽  
Electric Power System ◽  
Driving Safety ◽  
Steering Wheel ◽  
Hydraulic Systems ◽  
Compact Structure ◽  
Steer By Wire ◽  
Improved Performance

Automobile industry’s focus is on efficiency, safety and performance has resulted in the rapid introduction of electronics in vehicle safety systems and engine management. Mechanical and Hydraulic systems are now gradually being replaced by electronic controllers to achieve the objectives of optimizing power consumption, improving driver convenience, and maximizing driver safety resulting in an overall improved performance and experience. Vehicle steering systems have transitioned from mechanical to hydraulic power to an electric power assisted steering system and now to the state of the art, Steer by Wire (SbW) system. Traditional mechanical systems included a steering wheel, column, gear, rack and pinion and did not support any power steering. The next generation hydraulic systems were more stable, safer and required comparatively lesser effort. Electric or DC motors drove the Electric Power System addressing the drawbacks of the hydraulic systems especially those related to environment and acoustics with the added advantage of a compact structure and power-on-demand engine performance. By-wire steering technologies was originally introduced in the Concord aircraft in 1970s. The SbW is a steering system with no steering column. The mechanical interface between the steering wheel and the wheels is replaced with by-wire electrical connection/electronic actuators. SbW system has significant advantages in terms of driving safety due to the availability of the steering command in electronic form and the removal of the steering shaft, cruising comfort with driving manoeuvring due to no space constraint and favourable to the environment with the non-usage of hydraulic oils.

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