Measuring device and measuring method for dynamic braking torque of RV brake system

Abstract

The invention discloses a measuring device for dynamic braking torque of RV braking system, which comprises a gyroscope, an accelerometer, a strain gauge and a speed encoder. The gyroscope is placed at the position close to the center of mass of the RV to detect the acceleration / deceleration signal of the RV; the accelerometer is installed at the end of the RV to detect the acceleration / deceleration signal of the RV; the strain gauge is arranged at the hook between the tractor and the towed RV, and is used for detecting the tension signal between the tractor and the towed RV; the speed encoderis arranged on the axle of the RV for detecting the angular acceleration signal of the axle of the RV. The strain gauge, gyroscope, speed encoder and accelerometer communication connects acquisitioninstrument; and the acquisition instrument connects to remote computer communication. No brake inspection bench among other equipment is needed for calculating the braking torque . Since detection equipment is already equipped in the original vehicle and no torque sensor is needed, the measurement cost is low. This invention only needs to establish the force balance equation for the RV, to take the moment for the center point of the trailer wheel, and to establish the torque balance equation, so that the braking torque of the vehicle can be obtained in real time, which can provide basic data for further experiments.

Description

Technical field: [0001] The invention belongs to the technical field of vehicle dynamic measurement, and in particular relates to a real-time measurement device and a measurement method for the braking torque of a trailer type caravan. Background technique: [0002] The braking torque is the torque generated by the brakes, its function is to reduce the speed of the wheels, and finally decelerate the car until it stops; when driving downhill, it can keep the car at an appropriate and stable speed; in addition, it can also make the car stop reliably in place or on the ramp. When the car brakes, the braking torque is an important parameter for analyzing the braking process and evaluating the braking system. [0003] The braking torque of the vehicle is generally measured on the brake test bench. At present, most of the brake test equipment used in domestic automobile comprehensive performance test stations are reaction-force roller brake test benches and flat-plate brake test ...

AI Technical Summary

Problems solved by technology

However, the trailer-type caravan is driven by the tractor, and the part of the caravan itself has no power, so the trailer-type caravan cannot measure the braking torque and braking force on the brake test bench.

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