摘要:
A circuit arrangement for a braking system with electronic regulation of the braking power distribution comprises circuits determining the deceleration (b3, b4) of the rear wheels (HR, HL) and the deceleration (dFZ) of a vehicle or a corresponding reference value (bREF). The difference between the filtered rear wheel deceleration (b'3, b'4) and the vehicle deceleration (bFZ, bREF) are evaluated to regulate the braking force distribution. To this end, a differentiator and an integrator (20, 21) are used to compare the rear wheel and vehicle deceleration, an output signal (x(t) or x1, x2) is obtained and evaluated to control the braking pressure (pHA) in the rear-wheel brakes.
摘要:
In a circuit arrangement for a brake system with antilock or anti drive slip system and with switching circuits for detecting bends, side reference speeds (13, 14) are derived by means of selection circuits (8, 9) each of which selects a controlling wheel speed in accordance with given criteria and by means of filter stages (10, 11) with variable time constants (12). A difference signal (DVS) (15) whose amplitude can be varied by counter coupling is derived from the side reference speeds (SRGL, SRGR). An adaptation circuit (18) triggered by this difference signal (DVS) in function of the vehicle reference speed (VREF) influences the control thresholds of the antilock and anti drive slip system (7) in order to adapt the control to the specific characteristics of a bend being negotiated.
摘要:
In order to improve the regulating behaviour of an antilock or skid control system, in particular to improve the steerability of a vehicle and the drive stability when braking in a curve, criteria for recognising curves and their orientation are derived from the skidding of the individual wheels of the vehicle. When a curve is recognised, the normal regulation mode for straight driving is changed into a regulation mode for curve driving. The normal regulation mode for straight driving is characterised by an individual regulation of all wheels or by an individual regulation of the front wheels combined with a select-low regulation of the rear wheels. In the regulation mode for curve driving, the mean pressure level of the front wheel at the inner side of the curve is lowered by a predetermined value and the mean pressure level of the front wheel at the outer side the curve is increased by a predetermined value. The mean pressure level of the rear wheels may also be modified in a corresponding manner in vehicles provided with select-low regulation and pairs of valves for each wheel.