2017
DOI: 10.1177/1687814017730753
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Design of a variable steering ratio for steer-by-wire vehicle with a joystick

Abstract: Steer-by-wire system has replaced the conventional mechanical linkages with electronic actuators. In this article, a joystick is utilized to substitute the conventional steering wheel and study the variable steering ratio design methods in this new human-machine interface. With this structure of steer-by-wire system, the steering angle and torque ratio can be designed flexibly. A dynamic model of joystick of steer-by-wire system is built based on bilateral control scheme. Through comparing the vehicle steering… Show more

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Cited by 7 publications
(5 citation statements)
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“…Different from the mechanical steering system with fixed steering ratio, SBW system can change the steering characteristics of a forklift by changing the steering ratio. 22 Therefore, when the forklift is steering at different velocities, the steering ratio can be adjusted to make the steering gain of forklift keep constant, the corresponding steering ratio is the ideal steering ratio. The steering ratio of electric forklift can be defined as the ratio of hand-wheel angle d hw to steering wheel angle d sw , as shown in equation ( 2…”
Section: Vsr Algorithms Based On Constant Gainmentioning
confidence: 99%
“…Different from the mechanical steering system with fixed steering ratio, SBW system can change the steering characteristics of a forklift by changing the steering ratio. 22 Therefore, when the forklift is steering at different velocities, the steering ratio can be adjusted to make the steering gain of forklift keep constant, the corresponding steering ratio is the ideal steering ratio. The steering ratio of electric forklift can be defined as the ratio of hand-wheel angle d hw to steering wheel angle d sw , as shown in equation ( 2…”
Section: Vsr Algorithms Based On Constant Gainmentioning
confidence: 99%
“…Wada et al 13 proposed a steering wheel control system incorporating a joystick interface aimed at enhancing driving stability during high-speed maneuvers. Zheng et al 14 proposed the differences in ratios between joystick follow steering systems and conventional follow steering systems, and also proposed a ratio control strategy for joystick follow steering systems and investigated the busyness of the driver when the vehicle is operating at low speeds with a large turning radius, and the influence of different angular ratios on vehicle handling stability when the vehicle is operating at medium speeds. Wei et al 15 described the relationship between steering wheel angle and motor turning angle based on the structure of a double planetary gear set and established a kinematic model for the additional angle of the front wheels.…”
Section: Introductionmentioning
confidence: 99%
“…Experiments using a gyro sensor and a driving simulator prove that the interface is similar to the traditional steering wheel operation method. The results of many studies (Liu et al, 2013;Park et al, 2004;Zheng et al, 2017) have shown the potential of the car to steer through the joystick, which is comparable to the traditional steering wheel, but in the formal investment before production, more stability and safety tests are needed.…”
Section: Introductionmentioning
confidence: 99%