An eddy current retarder capable of automatically adjusting the air gap and its control method
An eddy current retarder and automatic adjustment technology, applied in the direction of asynchronous induction clutch/brake, motor, electric vehicle, etc., can solve the problems of large air gap design value, large power consumption, etc., to improve braking performance, The effect of ensuring safety
Inactive Publication Date: 2017-01-18
JIANGSU UNIV +1
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Problems solved by technology
[0004] The purpose of the present invention is to solve the problem that the traditional eddy current retarder has a large air gap design value, which leads to a large power consumption during operation
Method used
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[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.
[0031] like figure 1 As shown, there are 8 linear bearings 6 circumferentially installed on the left stator support 8, and the linear bearings 6 are fixed on the left stator support 8 by bolts 7.
[0032] like figure 2 As shown, there are 8 linear bearings 6 circumferentially installed on the right stator support 5, and the linear bearings 6 are fixed on the right stator support 5 by bolts 7.
[0033] like image 3 As shown, the linear bearing 6 is fixed on the left stator support 8 through bolts 7 , and the excitation coil 9 is sleeved on the outer ring of the linear bearing 6 . The left iron core 1 is set in the linear bearing 6, and is installed in cooperation with the cage of the linear bearing 6 installed on the left stator bracket 8; Bearing 6 cooperates.
[0...
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The invention discloses an eddy current retarder capable of automatically regulating an air gap and a control method for the eddy current retarder. The eddy current retarder comprises iron cores, a gap regulation coil, a sealed bag, stator brackets, linear bearings and excitation coils, wherein the linear bearings are mounted on the brackets; the excitation coils are arranged on outer rings of the linear bearings; the iron cores are mounted in the linear bearings in a matching manner; the left and right iron cores are fixedly connected with the left and right end faces of the sealed bag respectively; the gap regulation coil is fixed with the sealed bag. According to the eddy current retarder, the magnitude of current of the gap regulation coil is controlled to change the viscosity of a magnetorheological fluid in the sealed bag to further control gaps between the iron cores and a rotor disc; the shortcoming of greater air gap design value of a conventional structure is overcome, and the air gap design value can be remarkably reduced; when the temperature of the rotor disc rises and the inner lateral surface is heated to be expanded, the expansion of the inner lateral surface of the rotor disc can be estimated, and the air gap of the eddy current retarder can be automatically regulated; the braking performance of the eddy current retarder at high temperature is improved on the premise of ensuring the braking safety.
Description
technical field [0001] The invention belongs to the field of automobile auxiliary braking, and in particular relates to an eddy current retarder capable of automatically adjusting an air gap and a control method thereof. Background technique [0002] In recent years, the vehicle eddy current retarder has been applied and developed. It can effectively make up for the lack of technical performance of the existing brake system and improve the safety of the vehicle. The eddy current retarder is a non-contact brake, which is a retarder that uses electromagnetic principles to generate braking torque. It has changed the braking performance of the brake due to the frequent braking of the mechanical braking system in the prior art, shortening the service life of the braking system and causing the temperature rise of the friction brake, which can reduce the number of brake actions and effectively Solve the noise and dust problems, reduce the temperature rise of the friction brake, im...
Claims
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IPC IPC(8): H02K49/04B60L7/28
CPCY02T10/64
Inventor 胡东海何仁
Owner JIANGSU UNIV