Automobile ABS adhesion coefficient utilization rate auxiliary measuring device and measuring method

Abstract

The invention relates to an automobile ABS adhesion coefficient utilization rate auxiliary measuring device and a measuring method. The automobile ABS adhesion coefficient utilization rate auxiliary measuring device comprises a brake pedal control mechanism, a wheel speed measuring device and an electric control system. The brake pedal control mechanism comprises a sliding table, a lead screw nut,a threaded lead screw and a servo drive motor, the sliding table is fixed to a cab bottom plate, the threaded lead screw and the servo drive motor are fixed to the sliding table, the lead screw nut sleeves the threaded lead screw, the threaded lead screw rotates to drive the lead screw nut to axially move on the sliding table, and one end of a ball head rod is connected with the lead screw nut. The other end of the ball head rod is connected with a ball head clamping sleeve, the ball head clamping sleeve moves along the spherical surface of the ball head rod, the ball head clamping sleeve isinstalled on an anti-skid plate through a force sensor, and the anti-skid plate and a brake pedal are oppositely arranged; and the servo driving motor is connected with a potentiometer. An ingenious structure and a high-precision control system are adopted, the structure of an automobile brake loop is not changed, test variables are reduced to the minimum, and the most real automobile brake parameters are tested.

Description

technical field [0001] The invention relates to the field of automobile road testing, in particular to an auxiliary measuring device and a measuring method for the utilization rate of adhesion coefficient of automobile ABS. Background technique [0002] The auxiliary measuring device for the utilization rate of the ABS adhesion coefficient of automobiles is an auxiliary measuring device designed according to the maximum braking force, ABS adhesion coefficient and other test methods required in "GB / T13594-2003 Motor Vehicle and Trailer Anti-lock Braking Performance and Test Methods" . [0003] The reliability of the car brake device is related to the life safety of the people inside and outside the car. Affected by the car's own load factors and road adhesion factors, the vehicle wheels will be locked and the vehicle will be out of control. The emergence of ABS has subversively solved the problem of car wheel The problem of clinging to death. For road testing of automobile ...

AI Technical Summary

Problems solved by technology

[0005] The current test methods are mostly experienced drivers who have repeated tests many times. Under the condition that the wheels will be locked but not locked, start braking from 50KM / H, and measure the shortest time it takes to decelerate from 40KM / H to 20KM / H. , according to the event, the adhesion coefficient and maximum power of the tested vehicle are calculated. This value is a variable. During this period, the state of the wheels will be locked but not locked is extremely difficult to control, and the repeatability is extremely poor, and the test efficiency is low.

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