An automatic braking force distribution control device and control method for a trailer-type caravan

Abstract

The invention provides a braking force automatic allocation control device for a travel trailer and a control method thereof. The device includes a detection mechanism, an electronic control unit (ECU) and an executing mechanism. The detection mechanism detects a brake signal of a brake pedal and a resistance change signal of an angle measuring device, and sends the signals to the ECU, and the angle measuring device is mounted at the joint of a towing vehicle and a limo. The executing mechanism includes a PWM controller and a brake. The ECU judges the braking force of the towing vehicle and the limo according to the brake signal; and the ECU calculates a hinged angle at the hinged position of the towing vehicle and the limo according to the resistance change signal of the angle measuring device. The control unit is connected with the executing mechanism, a left braking force and a right braking force of a limo brake are adjusted through the PWM controller, and a yawing moment is generated to make the travel trailer capable of performing braking stably. The device is simple in structure and easy to install, and the stability of the braking force automatic allocation control device during braking can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of brakes of a trailer-type caravan, and in particular relates to a device for automatically distributing braking force of a trailer-type caravan and a control method thereof. Background technique [0002] With the progress of the times, people's requirements for the quality of life are constantly improving. Many people will choose to drive and drag the caravan to go out for fun. The trailer-type caravan came into being and continues to develop. The braking performance of a car is one of the main performances of the car and an important guarantee for the safe driving of the car. [0003] When a trailer-type RV brakes in a straight line, if there is an angle between the tractor and the RV, the RV will have a yaw angle, which will affect its braking stability. At present, most of the existing angle measuring devices use precise electronic angle measuring devices, which have high manufacturing costs and are co...

AI Technical Summary

Problems solved by technology

[0003] When a trailer-type RV brakes in a straight line, if there is an angle between the tractor and the RV, the RV will have a yaw angle, which will affect its braking stability

At present, most of the existing angle measuring devices use precise electronic angle measuring devices, which have high manufacturing costs and complex structures that are easily damaged. Once a problem occurs, it is difficult to repair

Existing angle measuring devices, such as patent application number 201080018253.1, have a drive gear connected to the shaft in a torque-transmitting manner and at least one measuring gear directly driven by the drive gear, wherein one or more measuring gears The angular position can know the angular position of the shaft, the accuracy is relatively high, but the structure is complicated, the wear between the measuring gear and the driving gear is very large, and the service life is not long

Another example is the patent application number 201510208789.4, which uses the gradual increase in the thickness of the metal block to realize the change of the distance from the coil on the circuit board, and produces mutual inductance effects of different strengths to measure the size of the angle. The mechanical structure is simple but many sensors are used, and the cost is relatively expensive. And the performance of the sensor will degrade during long-term use, making the measurement results wrong

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