Patent
Anti-skid control device
TLDR
In this paper, the authors proposed a method to improve the stability of a vehicle under braking and shorten the braking distance by calculating the target wheel peripheral speed based on a road friction coefficient and a wheel turning angle and controlling a wheel peripherals speed to approach this target speed.Abstract:
PURPOSE:To improve the stability of a vehicle under braking and shorten the braking distance by calculating the target wheel peripheral speed based on a road friction coefficient and a wheel turning angle and controlling a wheel peripheral speed to approach this target wheel peripheral speed. CONSTITUTION:When a brake pedal is depressed for braking, a dummy vehicle speed Vr1 is calculated by a setter 17 based on the output or the like of a wheel peripheral speed (Vw) detector 7 and a turning radius r1 is calculated by a setter 19 based on this Vr1 and the output or the like of a steering angle detector 21 respectively. Next, a target slip ratio Sr is calculated from Vr1, r1 and a friction coefficient mu1, and a target wheel peripheral speed Vs is calculated from this Sr. On the other hand, the ratio between the descending rate and ascending rate of the wheel peripheral acceleration/deceleration obtained by a differentiator 8 from this Vw is calculated by a computer 10, a friction coefficient mu2 corresponding to this ratio is calculated by a converter 15, then the target wheel peripheral speed Vs is calculated by the setter 12 based on this friction coefficient mu2.read more
Citations
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Method of controlling brake pressure in conjunction with deviation of actual slip of wheel from object slip thereof
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References
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Patent
Anti-skid device for vehicle
TL;DR: In this paper, a steering sensor 28 attached to a steering shaft 26B detects a steering rotation angle theta, in accordance with which each constrol constant of front-wheels is changed.
Patent
Standard wheel speed arithmetic unit for antiiskid controller
TL;DR: In this paper, the friction coefficient between a road surface and a wheel was found to change the magnitude of downward slope of a wheel, resulting in a desired wheel speed pattern with a certain correction time.