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Journal articles on the topic 'Hydraulic Power Steering'

Author: Grafiati

Published: 4 June 2021

Last updated: 14 February 2022

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1

Park, Ji In, Kawngki Jeon, and Kyongsu Yi. "An investigation on the energy-saving effect of a hybrid electric-power steering system for commercial vehicles." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 233, no. 6 (June 5, 2018): 1623–48. http://dx.doi.org/10.1177/0954407018777579.

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This article describes an investigation on the energy consumption of an alternative hybrid electric power steering system. The conventional hydraulic power steering system that is widely used in commercial vehicles can provide high steering-feel and reliability performances. However, since the combustion engine drives the pump, the hydraulic power steering system is energetically inefficient. To cope with this disadvantage of the hydraulic power steering system and to provide a technical base for the steering-related advanced driver assistance system, the Hybrid electric power steering system offers a solution for heavy commercial vehicles. The “Hybrid” of the title means that, for heavy commercial vehicles, the electric power steering system and electro-hydraulic power steering system are integrated in a ball-nut steering system. In this paper, to verify the energy-saving effect of the Hybrid electric power steering system, a dynamic model of the Hybrid electric power steering system was developed to estimate the energy consumption in the steering system. Furthermore, the fuel-efficiency test for the Hybrid electric power steering system were conducted while replacing the two steering systems (the conventional hydraulic power steering and Hybrid electric power steering system) in one vehicle on the chassis dynamometer for the proposed driving cycle. The driving cycle including the steering-angle profile has been developed to clearly investigate the effect on the energy-saving potential by the types of the steering system (hydraulic power steering and Hybrid electric power steering). The simulation results of the energy-consumption estimation showed that the hybrid electric power steering system can reduce the steering-system energy consumption by more than 50% under the proposed driving cycle. Also, the vehicle testing of the chassis dynamometer revealed that the Hybrid electric power steering system can improve the fuel efficiency of the vehicle by 1% for the specified driving cycle.

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2

Wang, Jun, and Li Chao Xu. "Electric Hydraulic Power Steering System Simulation Study." Applied Mechanics and Materials 373-375 (August 2013): 154–57. http://dx.doi.org/10.4028/www.scientific.net/amm.373-375.154.

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Properly controlling electro hydraulic power steering system can improve steering performance. The relation of motor speed, vehicle speed and steering speed is gained, according to the influence of motor speed on the steering performance. The force and angle input is set in the driver input model. Rotary valve is simulated by four orifices. The steering resistance between tire and ground is simulated by the coulomb friction on two tips of the rack. The method of double closed-loops PID is used to control the motor. The influence of the control strategy on the steering performance is realized by the simulations of three typical situation, which includes steering portability, road feel, the speed of assist force response and its stability. The results of simulation validate the availability of the control strategy, which is the basic of optimization.

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3

Zhu, Qing, Gang Liu, and De Chao Song. "The Study of Dynamic Characteristic of Full Hydraulic Power Steering System Based on AMESim." Advanced Materials Research 482-484 (February 2012): 474–77. http://dx.doi.org/10.4028/www.scientific.net/amr.482-484.474.

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The simulation model of full hydraulic power steering system whose key part is full hydraulic power steering unit is established based on AMESim. According to the parameters from one articulated construction vehicle, the dynamic characteristic of the full hydraulic power steering system can be studied. Through the input from steering wheel and external load in different situations, the response curve is obtained, that can provide references for the design of full hydraulic power steering system in articulated construction vehicles.

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4

Hu, Ai Jun. "Development of the Automobile Steering System." Applied Mechanics and Materials 42 (November 2010): 272–75. http://dx.doi.org/10.4028/www.scientific.net/amm.42.272.

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The automobile mechanical steering system, hydraulic power steering system, electro hydraulic power steering system, electric power steering system, active front steering and steer-by-wire system were introduced in this paper. It is indicated that the integrated control technology of active steering and vehicle are the future development tendency.

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5

Li, Jie, Jian Tong Song, Li Hong Wang, and Jv Biao Yao. "Design of Traditional Hydraulic Steering System with Variable Power." Applied Mechanics and Materials 644-650 (September 2014): 755–58. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.755.

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Conventional hydraulic steering system has the problems of "low-speed heavy, high-speed flight" and energy-wasting when steering, the main reason is after the system is designed, the power characteristics are fixed. To solve this problem it is necessary to achieve the power characteristics of changing power steering system according to speed of vehicles, in order to offer the power that matches the speed. Using vehicle speed sensor signal to control pilot solenoid unloading valve to regulate the pressure of hydraulic system, can achieve the regulation of power characteristics, this article is based on such idea to design variable hydraulic power steering system for hydraulic power steering system of light trucks.

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6

Dange, Chandrakant. "Double Barrel Hydraulic Power Steering Gear." Auto Tech Review 3, no. 1 (January 2014): 60–63. http://dx.doi.org/10.1365/s40112-014-0524-y.

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7

Yang, Zhen Lin, Ren Guang Wang, Lin Tao Zhang, Chao Yu, Guang Kui Shi, and Heng Tao Chen. "A New Hydraulic Power Steering System for Hybrid City Bus." Applied Mechanics and Materials 321-324 (June 2013): 1562–65. http://dx.doi.org/10.4028/www.scientific.net/amm.321-324.1562.

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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.

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8

Chen, Yong, and Jing Jing Xia. "Research on Design Methods and Experiments of the Electro-Hydraulic Power Steering Pump." Advanced Materials Research 986-987 (July 2014): 1125–28. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.1125.

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In order to improve the performance of vehicle steering system and reduce the system energy consumption, the structure and operation principle of an electro-hydraulic power steering (EHPS) system with a electro-hydraulic steering pump are described, on this basis, with the function requirement of steering system, and by using vehicle design and fluid drive theory, the design method of this electro-hydraulic steering pump and its matching with the vehicle are presented. Through building electro-hydraulic steering pump test platform to test its performance parameters, the results prove the correctness and effectiveness of this kind of design method, provide the basis for subsequent development of the electronic control system.

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9

Xue, Y., and J. Watton. "Modelling of a hydraulic power steering system." International Journal of Vehicle Design 38, no. 2/3 (2005): 162. http://dx.doi.org/10.1504/ijvd.2005.007290.

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10

Shi, Guo Biao, Shuai Wang, Peng Gu, Huan Xin Xie, and Yi Lin. "Energy Analysis for Electric Hydraulic Power Steering System of Electric Bus." Applied Mechanics and Materials 610 (August 2014): 164–68. http://dx.doi.org/10.4028/www.scientific.net/amm.610.164.

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Electric hydraulic power steering system (EHPS) is an on-demand power steering system that uses a small displacement and high speed electric pump. By optimizing the assist characteristic curve, EHPS can save energy more significantly than traditional hydraulic power steering system. After overview of the energy saving principle for EHPS system, the energy consumption of the EHPS system is elaborated, and the energy loss of the mechanical, electrical, hydraulic subsystems is analyzed. Finally, targeted measures are proposed for energy conservation.

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11

Ranade, Eeshan. "Electronic Control System for Steer by Wire." International Journal for Research in Applied Science and Engineering Technology 9, no. VI (June 30, 2021): 4161–66. http://dx.doi.org/10.22214/ijraset.2021.35968.

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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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12

Ding, Zhi Hua. "Research on New Vibratory Energy Power-Assisted Automobile Hydraulic Steering System." Applied Mechanics and Materials 220-223 (November 2012): 710–13. http://dx.doi.org/10.4028/www.scientific.net/amm.220-223.710.

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A vibratory energy-recovery hydraulic damping system is introduced which can recycle some vibratory energy and reduce oil consumption. Pressurized oil from the system can be used for braking system, power-assisted steering, hydraulic clutch operating mechanism and so on. An inflatable list tube shock absorber is designed which can recycle vibratory energy. It’s structure and operating principle are introduced. At last, Research is made on structure and operating principle of new vibratory energy power-assisted automobile hydraulic steering system. The vibratory energy-recovery hydraulic damping system had reported the national invention patent (CN102152778A), the vibratory energy power-assisted automobile hydraulic steering system also had reported the national practical new patent (ZL 2011 2 0101078.4).

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13

Geng, Guo Qing, Hao Bin Jiang, Jia Yin Dong, Tao Jiang, and Tao Liu. "Modeling and Characteristics Research of Proportional-Valve Hydraulic Power Steering of Commercial Vehicle." Advanced Materials Research 765-767 (September 2013): 357–60. http://dx.doi.org/10.4028/www.scientific.net/amr.765-767.357.

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Dynamics model of mechanical system and hydraulic system inclued electro-hydraulic proportional valve of Proportional-Valve Hydraulic Power Steering were established.and simulation model of assisted characteristic of PVHPS system was build .Response characteristic of proportional valve bypass flow was analyzed at different speed, and higher of the speed, greater of the flow in the bypass flow is . Steering wheel torque increases gradually as vehicle speed increases at the same wheel angle, and driver's better steering road feeling can be ensured. As wheel steering torque increases, assisted oil pressure increases and higher the speed is , slowly oil pressure increases, and assisted oil pressure increases quickly at low-speed steering condition, and increases slowly at high-speed condition,which meet the requirement of low-speed steering agility and high-speed road feeling.

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14

Chen, Lei, and Pan Zhang. "Simulation on Displacement Characteristics of Variable Displacement of Double-Action Vane Pump." Advanced Materials Research 152-153 (October 2010): 1088–91. http://dx.doi.org/10.4028/www.scientific.net/amr.152-153.1088.

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On of the practical difficulties of high speed automotive hydraulic power steering is that the output exceeds the actual demands of the system, i.e., there is a substantial power loss. This paper discusses the configuration and the action principle of a new variable displacement of double-action vane pump, which consists of floating blocks. The pump belongs to an automotive hydraulic power steering system, and prosperous utilization is expected. In the meantime the mathematical and simulation model for hydraulic power steering of automobile were established and the Matlab Simulink simulation model was presented. Different parameters of pump are selected in simulating programming. The simulating results are analyzed and compared.

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15

Du, Heng, Qingming Zhang, Shumei Chen, and Jinhui Fang. "Modeling, simulation, and experimental validation of electro-hydraulic power steering system in multi-axle vehicles." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 233, no. 2 (December 19, 2017): 317–32. http://dx.doi.org/10.1177/0954407017743346.

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An accurate electro-hydraulic power steering system (EHPSS) model is essential to analyze dynamic steering performance and advanced nonlinear control. The main obstacle to establish an accurate model is the complex structure, including steering mechanism, valve controlled dual hydraulic-actuator, and heavy duty tires. This paper constructs a suitable model incorporating these parts, based on a Lagrange equation describing the steering trapezoid mechanism and dual cylinder hydraulic dynamics, regarding steering resisting moment as an external load. A simplified tire model is used to represent the tire basic steering load characteristics. Due to the complexity of the kinematic relationship in the model, several expressions are fitted using back propagation neural networks to significantly reduce calculation difficulty. Experimental measurements and simulation using Matlab/Simulink and experiment are realized for the case of in situ steering, and the results validate the proposed model accuracy. Thus, the proposed model is suitable to analyze the system and design advanced controllers.

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16

Chen, Yong. "Development and Application Road Testbench on Vehicle Hydraulic Power Steering System." Applied Mechanics and Materials 490-491 (January 2014): 1018–22. http://dx.doi.org/10.4028/www.scientific.net/amm.490-491.1018.

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In order to study operation characteristic of the hydraulic power steering (HPS) system, a data gathering system, based on the testbench, was designed to test HPS system operating on-road. By using various kinds of sensors, such as hydraulic pressure, fluid flow rate, steering torque, corner angle, angular velocity, vehicle speed, gyro sensors and so on, convert steering wheel angle, angular velocity, torque and other operation parameters into analog voltage signals, which provided to real-time data acquisition, storage and analysis. 11 physical quantities can be tested simultaneously, including steering system and operation parameters of vehicles. Different angular velocity of steering wheel speed and "S" shape road were tested on different vehicle speeds, and the result shows that the tests are in accordance with theoretical analysis, which proves the data gathering system's credibility.

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17

Byshov, N. V., G. D. Kokorev, I. A. Uspensky, and I. A. Afinogenov. "Improvement of the efficiency of hydraulic power steering." IOP Conference Series: Earth and Environmental Science 341 (November 15, 2019): 012113. http://dx.doi.org/10.1088/1755-1315/341/1/012113.

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18

Dobrivoje, Catic, Gasic Milomir, Savkovic Mile, and Glisovic Jasna. "Fault tree analysis of hydraulic power-steering system." International Journal of Vehicle Design 64, no. 1 (2014): 26. http://dx.doi.org/10.1504/ijvd.2014.057774.

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19

Fang, Gui Hua, Wen Shuai Zheng, and Li Bo Zhang. "Modeling and Simulation Based on AMESim and Simulink Electric Hydraulic Power Steering System." Advanced Materials Research 706-708 (June 2013): 1150–53. http://dx.doi.org/10.4028/www.scientific.net/amr.706-708.1150.

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This article using AMESim and Simulink software co-simulation technology and appropriate software to establish the simulation model of the key components of the steering system, it is found the factor which affect vehicle handling and stability of steering system in the structure by analyzing the impact of various parameters on the car steering system. It is to verify the feasibility of the model and study how steering system of all kinds of main factor to influence the vehicle steering stability through Simulink and AMESim software co-simulation results cf vehicle steering stability GB experiments.

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20

Mills, V. D., and J. R. Wagner. "Behavioural modelling and analysis of hybrid vehicle steering systems." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 217, no. 5 (May 1, 2003): 349–61. http://dx.doi.org/10.1243/095440703321645061.

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Hybrid vehicles integrate an internal combustion engine, electric motor with accompanying battery pack and generator, and potentially fuel cells to realize greater fuel economy and reduced emission levels. A variety of powertrain operating scenarios exist including engine with belt-driven generator, electric motor using battery pack and/or fuel cell and, finally, engine and electric motor. Automotive subsystems such as hydraulic power steering cannot be consistently powered by a conventional belt-driven hydraulic pump since the engine may be frequently turned off to conserve energy. Thus, a need exists to investigate the dynamic behaviour of various steering systems for hybrid vehicles in terms of platform steering characteristics and power consumption. In this paper, empirical and analytical mathematical models will be presented for power (e.g. hydraulic, electric and steer by wire) rack and pinion steering units. The influence of chassis, tyre-road interface and steering system non-linearities are introduced. Representative numerical results will be presented and discussed to investigate a vehicle's transient response for each steering system configuration.

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21

Akhtaruzzaman, M., Norrul’ Aine Binti Mohd Razali, Mohd Mahbubur Rashid, and Amir Akramin Shafie. "An Experiment on Electric Power Steering (EPS) System of a CAR." Applied Mechanics and Materials 110-116 (October 2011): 4941–50. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.4941.

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This paper describes an experiment on Electric Power Steering (EPS) system of a car. Nowadays EPS system can be considered as a Mechatronics system that reduces the amount of steering effort by directly applying the output of an electric motor to the steering system. In this paper, the constitutions, operational mechanism and control strategies of EPS system are introduced. A potentiometer measures driver input to the steering wheel, both direction and rate of turn. This information is fed into a microcontroller that determines the desired control signals to the motor to produce the necessary torque needed to assist. Although an electro hydraulic power assisted steering system can be used to reduce the fuel consumption, but the maximum benefit can be obtained if electronic system is applied instead of the hydraulic mechanism. The paper shows that a good power steering control technique is achieved by designing a Mechatronics system. The experimental results for the designed EPS system are also analyzed in this paper.

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22

Silva, José Antônio, Gláucio C. Laun Nacif, and Luben Cabezas-Goméz. "Continuous Improvements Analysis in Energy Efficiency of Steering Power Systems to Light Vehicles." Applied Mechanics and Materials 798 (October 2015): 92–96. http://dx.doi.org/10.4028/www.scientific.net/amm.798.92.

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This study analyses the energy consumption of a vehicle steering system and evaluates potential earnings in using more efficient systems. The energy consumption of the steering system to provide assistance can be until 3% of the vehicle total energy consumption. The technology evolution of the steering system provides a significant reduction in energy consumption. Three types of steering systems were evaluated: Hydraulic Power System, Electro-Hydraulic Power System and Electrical Power System, respectively, considering the consumption and the energy efficiency of their components. Some evaluations of the energy consumed by system components were performed using data from the available sources in the literature and other evaluations were performed via experimental tests on a bench test. A comparative study was set to determine the differences between steering systems regarding the energy consumption and energy efficiency. Consumption analysis of steering system were extended to evaluate the impact in the final vehicle consumption. The Electrical Power System can increase the efficiency in fuel use during operation in the vehicle.

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23

Shi, Guo Biao, Jin Long Cui, and Peng Gu. "Matching Design of Assist Characteristic for Electric Hydraulic Power Steering System of Electric Bus." Applied Mechanics and Materials 427-429 (September 2013): 235–40. http://dx.doi.org/10.4028/www.scientific.net/amm.427-429.235.

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Electric hydraulic power steering system (EHPS) has the characteristics of high energy efficiency and reliability. In this paper, we focus on the design and analysis of assist characteristic for EHPS of electric bus. The relationship of steering assist power, steering wheel torque and steering resisting torque was analyzed; steering system model and vehicle dynamic model were built. By EHPS simulation, the relationship of pump flow rate, steering wheel angular velocity and vehicle speed was deduced and 3-D assist characteristic curve map was plotted, which was suitable for electric bus. In order to apply the assist characteristic curve into practice, we optimized the curve through BP neural network, and then obtained the assist power value under any vehicle speed and steering wheel angular velocity. Finally, EHPS simulation verified the optimized assist characteristic curve having a good performance.

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24

Baharom, Masri B., Khalid Hussain, and Andrew J. Day. "Design of full electric power steering with enhanced performance over that of hydraulic power-assisted steering." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 227, no. 3 (January 15, 2013): 390–99. http://dx.doi.org/10.1177/0954407012468413.

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25

Su, Wen Hai, and Ji Hai Jiang. "Direct Drive Volume Control Electro-Hydraulic Servo Ship Rudder." Key Engineering Materials 439-440 (June 2010): 1388–92. http://dx.doi.org/10.4028/www.scientific.net/kem.439-440.1388.

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Direct drive volume control（DDVC）electro-hydraulic servo system has synthesized the advantages of high power of hydraulic system and flexible control of the motor. It also has other features such as energy saving, high efficiency, small bulk and high reliability. On the background for application to the ship steering system, DDVC electro-hydraulic servo system for the control actuator of ship is designed and the mathematic model is made and simulated with Matlab/Simulink. The steering gears closed-loop system’s simulation obtained the perfect dynamic performances; verify the correctness of the design with its control strategy. It can satisfy the ships request of boat to steering gears system and the DDVC electro-hydraulic servo system will be a extensive prospective power equipment of the control actuator of ship in future.

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26

Tokumoto, Y. "Development of energy-saving pump for hydraulic power steering." JSAE Review 18, no. 3 (July 1997): 310–13. http://dx.doi.org/10.1016/s0389-4304(96)00011-2.

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27

Nishimura, S. "Analysis of response lag in hydraulic power steering system." JSAE Review 21, no. 1 (January 2000): 41–46. http://dx.doi.org/10.1016/s0389-4304(99)00059-4.

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28

NOGUCHI, Eishin, and Kiyokazu NAGATA. "Detection of vibration path in hydraulic power steering system." Proceedings of the JFPS International Symposium on Fluid Power 1999, no. 4 (1999): 507–12. http://dx.doi.org/10.5739/isfp.1999.507.

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29

NAGAO, Yutaka, Junzo TAMARI, Masaru OKUBO, and Takeshi NIMURA. "Vibration Prediction of Hydraulic Pipelines of Power Steering System." Proceedings of Design & Systems Conference 2002.12 (2002): 354–57. http://dx.doi.org/10.1299/jsmedsd.2002.12.354.

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30

Tang, Bin, Hao Bin Jiang, and Guo Qing Geng. "Model and Dynamic Characteristics of Electromagnetic Split Clutch for Hydraulic Power Steering Application." Applied Mechanics and Materials 644-650 (September 2014): 759–62. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.759.

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In order to improve bus drivers’ high-speed road feel and reduce parasitic loss of hydraulic power steering system (HPS), a novel power steering system is proposed, which is characterized by an electromagnetic slip clutch (ESC) which regulates discharge flow of steering pump to realize variable assist characteristics as well as uniquely transfers on-demand power from ICE to steering pump. The mathematic model of ESC including flux linkage equations, voltage equations, electromagnetic torque equation and kinematic equations under synchronous rotating coordinate system (d-q coordinate) is constructed. Dynamic characteristic, mechanical characteristic, input-output characteristic and excited current-output speed characteristic of ESC are simulated. Finally, the experiment of ESC is implemented. The consistence of simulation results and experiment results indicate correctness and precision of the model.

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31

Li, Guang Ming, Kai Cheng, and Li Yan. "Optimal Design of Main Parameters for Pumping Unit of Automotive Power Steering Units." Advanced Materials Research 199-200 (February 2011): 1441–44. http://dx.doi.org/10.4028/www.scientific.net/amr.199-200.1441.

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We should clean the internal residual hydraulic oil after the automotive power steering units are carried out performance test according to the requirements. In the sake of pumping more residual hydraulic oil efficiently we develop the special pumping unit Based on the orthogonal test, the optimal design of the main parameters pumping unit of automotive power steering units that is the first adding gas time, adding gas interval and adding gas time has been completed in order to determine the optimal program to achieve the best pumping effect.

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32

Guo, Rui, Jing Yi Zhao, Yong Chang Wang, and De Cai Han. "Structural Design and Simulation Optimization of New Type Telescoping Heavy Hydraulic Trailer Steering System." Applied Mechanics and Materials 233 (November 2012): 47–50. http://dx.doi.org/10.4028/www.scientific.net/amm.233.47.

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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.

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33

Mio, Takumi, Yukihiro Komatsubara, Naoki Ohmi, Yusuke Kimoto, Kentaro Iizuka, Tomoki Suganuma, Shun Maruyama, et al. "Auxiliary Power Supply System for Electric Power Steering (EPS) and High-Heat-Resistant Lithium-Ion Capacitor." World Electric Vehicle Journal 10, no. 2 (May 22, 2019): 27. http://dx.doi.org/10.3390/wevj10020027.

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Advanced Driver Assistance System (ADAS) and Automated Driving (AD) are the two major topics for the current and next generations of vehicles. To realize them in full-size vehicles equipped with a 12 V power supply, the need for electric power steering (EPS) is increasing. Currently, the steering system of full-size vehicles is equipped with hydraulic power steering due to electric power shortage. An auxiliary power supply system using a lithium-ion capacitor was developed in order to solve the concern. In addition, to mount the system in the vehicle with no cooling–heating equipment, development of expanding the operating temperature range of the lithium-ion capacitor was conducted. Several improvements have made the capacitor operate stably in high-temperature environments above 100 °C.

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34

Zhang, Nong. "Transient Responses of a Hydraulic Power Assisted Vehicle Steering System." SAE International Journal of Materials and Manufacturing 4, no. 1 (April 12, 2011): 1048–56. http://dx.doi.org/10.4271/2011-01-0984.

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35

Gao, Bingzhao, Kazushi Sanada, and Kenichi Furihata. "3101 A Study on Modeling of Oil Hydraulic Power Steering." Proceedings of the JSME annual meeting 2006.2 (2006): 305–6. http://dx.doi.org/10.1299/jsmemecjo.2006.2.0_305.

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36

Li, Z. M., J. M. Lee, S. H. Park, J. S. Kim, and Y. H. Park. "A Hydraulic Power Steering System Based on Electro Hydrostatic Actuator." Journal of the Korea Society For Power System Engineering 15, no. 6 (December 31, 2011): 86–94. http://dx.doi.org/10.9726/kspse.2011.15.6.086.

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37

Xia, Lei, and Haobin Jiang. "An electronically controlled hydraulic power steering system for heavy vehicles." Advances in Mechanical Engineering 8, no. 11 (November 2016): 168781401667956. http://dx.doi.org/10.1177/1687814016679566.

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38

Morton, Christopher, Christopher M. Spargo, and Volker Pickert. "Electrified hydraulic power steering system in hybrid electric heavy trucks." IET Electrical Systems in Transportation 4, no. 3 (September 2014): 70–77. http://dx.doi.org/10.1049/iet-est.2013.0050.

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39

Mrochek, V. I., T. V. Mrochek, and S. V. Rozov. "Research into the flow regulator of the hydraulic power steering." Вестник Белорусско-Российского университета, no. 3 (2010): 15–23. http://dx.doi.org/10.53078/20778481_2010_3_15.

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40

Zhang, Zhizhong, Heng Du, Shumei Chen, and Hui Huang. "Frequency domain modeling, analysis and verification of electro-hydraulic servo steering system for heavy vehicles." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 234, no. 12 (June 6, 2020): 2836–50. http://dx.doi.org/10.1177/0954407020918696.

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The electro-hydraulic servo steering system is one of the core components of a heavy vehicle, and frequency response characteristics of this system are essential to guarantee the vehicle flexibility. However, it is difficult to establish frequency domain model directly for the frequency response characteristics analysis due to the strong nonlinearity of steering trapezoidal mechanism and hydraulic power system in electro-hydraulic servo steering system. This paper proposes a simplified linearization analysis method for the electro-hydraulic servo steering system. By variable substitution defining the load flow and load pressure, and linear fit between double tire angles and cylinder displacement, the original model is simplified to a frequency domain model. Based on this model, the essential frequency response characteristics and the effects of key parameters to electro-hydraulic servo steering system can be obtained. Through the sweep frequency response analysis, the linearized frequency domain model is compared with the nonlinear time domain model and the actual test system, respectively. As shown in Bode plots, the amplitude-frequency phase-frequency characteristic curves of models match well, which verifies linearization analysis method and linear frequency domain model. The key parameters affecting the system frequency domain characteristics are the valve flow gain, the area of cylinder rodless and rod chamber, and the linearization coefficient between the left and right tire angles and so on. The electro-hydraulic servo steering system bandwidth is only 7.38 rad/s (1.17 Hz). This research is helpful for the design and optimization of heavy vehicle dynamic steering system.

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Lin, Zhao An, Yi Wei Mo, Wei Huang, and Yang Yang Sun. "The Optimized Analysis of Recirculating-Ball Hydraulic Power Steering Gear Based on Orthogonal Experiment." Advanced Materials Research 1030-1032 (September 2014): 1264–68. http://dx.doi.org/10.4028/www.scientific.net/amr.1030-1032.1264.

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To optimized the structure parameters of steering gear assembled in low speed truck,an orthogonal experiment is designed within rang of variation of the structure parameters,under the guide of vehicle handing and stability comprehensive evaluation indexes.One optimum parameter group is obtained by analyzing the influence of structure parameters on evaluation indexes based on the simulation of the established and verified model of the truck steering system.The optimum parameters group is demonstrated can be benefit to the vehicle handing and stability through contrasting the original structure parameters,and achieving the objective of power steering gear structure parameters optimized analysis.

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Chen, Lei, and Pan Zhang. "Computerized Simulation on Energy Saving Characteristics of Variable Displacement of Double Action Vane Pump." Advanced Materials Research 291-294 (July 2011): 2709–12. http://dx.doi.org/10.4028/www.scientific.net/amr.291-294.2709.

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Based on the study of a patent, the configuration and action principle of a new variable displacement of double-action vane pump is discussed. The pump is equipped with floating blocks that may move up and down in accordance with the rotational speed of the pump. The pump belongs to an automotive hydraulic power steering system. The mathematical and simulation model for the hydraulic power steering of an automobile was established. Different pump parameters were selected for simulation. The simulation results showed that the pump with the floating block can provide power characteristics are better than a common pump. The utilization of the proposed pump is expected to improve efficiency and decrease exhaust gas and noise.

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43

Geng, Guoqing, Qingyuan Shen, and Haobin Jiang. "ANFTS Mode Control for an Electronically Controlled Hydraulic Power Steering System on a Permanent Magnet Slip Clutch." Energies 12, no. 9 (May 8, 2019): 1739. http://dx.doi.org/10.3390/en12091739.

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There are various uncertain factors such as parameter perturbation and external disturbance during the steering process of a permanent magnet slip clutch electronically controlled hydraulic power steering system (P-ECHPS) of medium and heavy duty vehicles, which is an electronically controlled hydraulic power steering system based on a permanent magnetic slip clutch (PMSC). In order to avoid the immutable single assistance characteristic of a hydraulic power steering system, a PMSC speed-controlled model and P-ECHPS of each subsystem model were studied. Combined with non-singular terminal sliding mode and fast terminal sliding mode, an Adaptive Non-singular Fast Terminal Sliding (ANFTS) mode control strategy was proposed to control precisely the rotor speed of the PMSC in P-ECHPS, thus achieving better power control for the entire P-ECHPS system. The simulation results show that adaptive nonsingular fast terminal sliding mode control enables PMSC output speed to track the target speed. Compared with the non-singular terminal sliding mode control and the ordinary sliding mode control, the convergence speed has been improved by 66.7% and 84.2%, respectively. The rapid control prototype test of PMSC based on dSPACE (dSPACE is a development and verification platform based on MATLAB/Simulink software.) was carried out. The validity of the adaptive NFTSM algorithm and the correctness of the offline simulation results are validated. The adaptive NFTSM algorithm have better robustness and can realize variable assist characteristics and save energy.

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Weiyong, Lu, and He Changchun. "Quantitative evaluation indexes of the spatial steering effect of directional perforation hydraulic fractures." Energy Exploration & Exploitation 39, no. 4 (April 15, 2021): 1246–61. http://dx.doi.org/10.1177/01445987211010266.

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To better evaluate the spatial steering effect of directional perforation hydraulic fractures, evaluation indexes for the spatial steering effect are first proposed in this paper. Then, these indexes are used to quantitatively evaluate existing physical experimental results. Finally, with the help of RFPA2D-Flow software, the influence of perforation length and azimuth on the spatial steering process of hydraulic fracture are quantitatively analysed using four evaluation indexes. It is shown by the results that the spatial deflection trajectory, deflection distance, deflection angle and initiation pressure of hydraulic fractures can be used as quantitative evaluation indexes for the spatial steering effect of hydraulic fractures. The deflection paths of directional perforation hydraulic fractures are basically the same. They all gradually deflect to the maximum horizontal principal stress direction from the perforation hole and finally represent a double-wing bending fracture. The deflection distance, deflection angle and initiation pressure of hydraulic fractures increase gradually with increasing perforation azimuth, and the sensitivity of the deflection angle to the perforation azimuth of hydraulic fractures also increases. With increasing perforation length, the deflection distance of hydraulic fractures increases gradually. However, the deflection angle and initiation pressure decrease gradually, as does the sensitivity.

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Wang, Zhaojian, and Hamid Reza Karimi. "Experimental Study on Antivibration Control of Electrical Power Steering Systems." Journal of Applied Mathematics 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/450427.

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We focus on the antivibration controller design problem for electrical power steering (EPS) systems. The EPS system has significant advantages over the traditional hydraulic steering system. However, the improper motor controller design would lead to the steering wheel vibration. Therefore, it is necessary to investigate the antivibration control strategy. For the implementation study, we also present the motor driver design and the software design which is used to monitor the sensors and the control signal. Based on the investigation on the regular assistant algorithm, we summarize the difficulties and problems encountered by the regular algorithm. After that, in order to improve the performance of antivibration and the human-like steering feeling, we propose a new assistant strategy for the EPS. The experiment results of the bench test illustrate the effectiveness and flexibility of the proposed control strategy. Compared with the regular controller, the proposed antivibration control reduces the vibration of the steering wheel a lot.

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Fan, Qin Man, and Yong Hai Wu. "The Multi-Objective Optimization Design of a Forklift Steering Mechanism." Advanced Materials Research 1049-1050 (October 2014): 884–87. http://dx.doi.org/10.4028/www.scientific.net/amr.1049-1050.884.

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The design and quality of steering mechanism is directly related to forklift traction, mobility, steering stability and safe operation. A multi-objective optimization model of the forklift steering mechanism is established in this paper. The objective function is minimum oil cylinder stroke difference and the minimum power oil pump. Steering torque, geometrical angles, geometry size and the hydraulic system pressure are used as constraint conditions. We use non dominated sorting genetic algorithm (NSGA II) based on the Pareto optimal concept to optimize and calculate model and get the optimal design of steering mechanism.

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Zhou, Qu Zhu. "The Simulation Design of the Rotary Valve of Hydraulic Power Assisted Steering System Based on the VB." Advanced Materials Research 69-70 (May 2009): 641–44. http://dx.doi.org/10.4028/www.scientific.net/amr.69-70.641.

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That automobile steering system are designed to suitable or not have a direct impact on vehicle safety, handling stability and driving comfort.The rotary valve of hydraulic power assisted steering system is one of the key components which affects the automotive steering performance. Design a reasonable spool valve in size can allow the car to get good properties . In this paper we use Visual Basic 6.0 to make a design calculations on rotary valve firstly, and then use the VB to carry out the numerical simulation on the steering performance of rotary valve and fitting the performance curve secondly, This method raised the design precision of the rotary valve, the design calculations is simplified.

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Zhou, Fang Yuan, Min Sheng Deng, Meng Ren Jin, Qin Li, and Xin Fu. "A Fluid-Driven Path Controllable Drilling Device with 3-DOF Hydraulic Steering System." Applied Mechanics and Materials 128-129 (October 2011): 775–79. http://dx.doi.org/10.4028/www.scientific.net/amm.128-129.775.

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Drilling along a specified route is required in more and more applications. This paper introduces a path controllable drilling device based on fluid power, which requires no electric power and thus especially suitable for mine rescue. The mechanism design, control method and working mode of the most important part of the device, a 3-DOF hydraulic steering system, are illustrated. An analytical model is also provided to estimate the invisible posture and orientation of the steering system and thus the drilling path of the device as working underground.

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49

KOJIMA, Eiichi, Takaaki OGAWA, and Jinghong YU. "Optimum Design of Resonator Hose for Automotive Hydraulic Power Steering System." TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY 33, no. 6 (2002): 132–39. http://dx.doi.org/10.5739/jfps.33.132.

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50

GAO, Bingzhao, Kazushi SANADA, and Kenichi FURIHATA. "A Study on Modeling Hydraulic-Power-Steering for Heavy Duty Vehicles." TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY 39, no. 2 (2008): 19–27. http://dx.doi.org/10.5739/jfps.39.19.

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