초록 ▼

A method of preventing wheels of a vehicle from skidding in which a wheel-acceleration signal representative of the peripheral acceleration of a wheel is obtained by differentiating a wheel-shaped signal representative of a suitably detected peripheral speed of the wheel. The braking torque applied

A method of preventing wheels of a vehicle from skidding in which a wheel-acceleration signal representative of the peripheral acceleration of a wheel is obtained by differentiating a wheel-shaped signal representative of a suitably detected peripheral speed of the wheel. The braking torque applied to the wheel during braking is controlled and held constant when the level of a wheel-acceleration signal is higher than that of a first reference wheel-acceleration signal and lower than that of a second reference wheel-acceleration signal, whereas it is increased when the level of the wheel-acceleration signal is higher than that of the second reference wheel-acceleration signal. A reference wheel-speed signal, representative of a predetermined reference wheel speed, and a reference wheel-deceleration signal are set for comparison with the wheel-speed signal and the wheel-acceleration signal, respectively, and the brake torque is held constant when the level of the wheel-acceleration signal is higher than that of the reference wheel-deceleration signal and lower than that of the second reference wheel-acceleration signal if the level of the wheel-speed signal is lower than that of the reference wheel-speed signal. The brake torque is further controlled to increase when the level of the wheel-acceleration signal is higher than that of the second reference wheel-acceleration signal.

대표청구항 ▼

A method of preventing the skidding of a wheel of a vehicle comprising: detecting the peripheral speed of a wheel of a vehicle and picking it up as a wheel-speed signal (Uwi); deriving a wheel-acceleration signal (Uwi) representative of an acceleration of said wheel from said wheel-speed signal (Uwi

A method of preventing the skidding of a wheel of a vehicle comprising: detecting the peripheral speed of a wheel of a vehicle and picking it up as a wheel-speed signal (Uwi); deriving a wheel-acceleration signal (Uwi) representative of an acceleration of said wheel from said wheel-speed signal (Uwi); setting a first reference wheel-acceleration signal (Vw1) representative of a positive acceleration and a second reference wheel-acceleration signal (Vw2) of a level higher than that of said first reference wheel-acceleration signal, for comparison with said wheel-acceleration signal (Uwi); comparing during braking, said wheel-acceleration signals (Vw1, Uwi, Vw2); and controlling a braking torque exerted on said wheel such that said brake torque is held constant when the level of said wheel-acceleration signal (Uwi) is higher than the level of said first reference wheel-acceleration signal (Vw1) and lower than that of said second reference wheel-acceleration signal (Vw2), while said braking torque is increased when the level of said wheel-acceleration signal (Uwi) is higher than that of said second reference wheel-acceleration signal (Vw2) and setting a reference wheel-speed signal (UR) representative of a predetermined reference wheel speed for comparison with said wheel-speed signal (Uwi); setting a reference wheel-deceleration signal (-Vwo) representative of a negative acceleration for comparison with said wheel-acceleration signal (Uwi), comparing during braking, said wheel-speed signal (Uwi) with said reference wheel-speed signal (UR), and also said wheel-acceleration signal (Uwi) with both of said first reference wheel-acceleration signal (Vw1) and said reference wheel-deceleration signal (-Vwo), and controlling said braking torque in a manner such that it is increased when the level of said wheel-speed signal (Uwi) is higher than that of said reference wheel-speed signal (UR) and simultaneously the level of said wheel-acceleration signal (Uwi) is lower than that of said first reference wheel-acceleration signal (Vw1) and higher than that of said reference wheel-deceleration signal (-Vwo).