FIELD: measuring equipment.
SUBSTANCE: method comprises rolling measuring wheel by the vehicle on the test surface, determining the speed of the measuring wheel, the measurement of the measuring wheel forces normal load on surface attachment to the shaft of the measuring wheel torque braking force through an induction electromagnetic brake, the rotor of which is connected to the measuring wheel axis, measurement of the angular measuring the wheel speed, the slip determination factor based on the angular velocity motion of the measuring wheel and its speed because of its radius, the change braking torque for the current value approximation the slip factor to a predetermined value, the determination of the adhesion force of the measuring wheel to the surface using an analog Hall sensor mounted on the stator of the induction electromagnetic brake between its poles and determining the coefficient of adhesion of the measuring wheel to the surface in the form of the ratio of the grip force of the measuring wheel to the surface to the normal load force of the measuring wheel to the surface. The apparatus comprises installed on the vehicle frame, the induction electromagnetic brake, the stator of which is mounted on a frame, metering wheel mounted on the brake rotor shaft, the sensor pressure force mounted to measure the vertical measuring wheel pressure forces on the test surface, the sensor angular measuring wheel speed, vehicle speed determination element, a clutch-force sensor of a measuring wheel with a monitored surface in the form of an analog Hall sensor mounted on the brake stator between its poles, a computer unit and a control unit.
EFFECT: increasing the accuracy of determining the coefficient of adhesion, simplifying the design, reducing the overall dimensions and weight of the device, expanding the arsenal of technical means of this purpose.
13 cl, 3 dwg
