关键词: 房车, 电磁制动器, 制动效能因数, 制动力

Abstract: Based on the requirement to the Braking fore of Towed Trailer in the Braking rules,a mechanics model of the Towed Trailer used Electric Brake is established in this paper，Realize the regulation of Braking force by changing the current of Electromagnet．Get the proper scope of the current．A comparative analysis is made between the test results and the conclusion．The results show the correspondence of the conclusion and the mechanical model of the braking force with the practice．which pmvidcs valuable reference for the further study on the distribution of braking force and the braking stability．

Key words: towed trailer, electric brake, braking efficiency method, braking force