A magneto-rheological damping automobile roller test bench and its control method
A magnetorheological damping, test-bed technology, applied in non-electric variable control, vehicle testing, control/regulation systems, etc., can solve the problems of high manufacturing cost, low precision, and high temperature, and achieve low cost and impurity interference. , the effect of simple structure
Active Publication Date: 2020-09-25
JIANGSU UNIV
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Problems solved by technology
The hydraulic dynamometer uses water as the braking medium, and the accuracy is low by adjusting the amount of water in and out; when the electric dynamometer is used as a load to absorb power, its function is equivalent to a DC generator, and the manufacturing cost is high; the eddy current dynamometer has the ability to measure It has the advantages of high precision, simple structure and easy regulation, and has a wide range of speed and power, but the eddy current will be converted into heat energy when absorbing power, resulting in higher temperature
Method used
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[0019] The content of the present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited thereto.
[0020] refer to figure 1 , the test bench of the present invention comprises a base 3, and the base 3 is provided with a paired torque sensor 1, a roller device 2, a speed sensor 4 (Hall speed sensor) and a linear motor 5, and the torque sensor 1 is fixed on the base 3, and The stator shaft 6 of the roller device 2 is connected, the speed sensor 4 is fixed on the support plate of the base 3, and is concentric with the rotating shaft of the roller device 2, and is used to detect the rotation speed of the roller device 2, and the linear motor 5 is fixed on the base 3, it is connected with the pressure control rod 15 of the restrictor valve.
[0021] refer to figure 2 , the drum device 2 consists of a left end cover 7, an oil seal 8, a support seat 9, a worm 10, a coil 11, a flow l...
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The invention discloses a magnetorheological damping car drum testbed and control method thereof. The testbed consists of a base, a drum device, a torque sensor, a speed sensor and a linear motor, wherein the drum device consists of an end cover, a cylinder body, a worm, a coil, a magnetorheological fluid, a flow limiting valve and a flow limiting valve pressure control rod. According to the testbed, the magnetorheological fluid generates flow through the worm; and when a driving wheel drives the drum to rotate at a certain speed, the pressure of the flow limiting valve can be adjusted throughthe linear motor and the size of an electromagnetic field can be adjusted through controlling the current of the coil, so as to adjust the viscosity of the magnetorheological fluid and realize the adjustment of damping force, and information is fed back through the torque sensor so as to carry out closed loop control. The testbed is suitable for testing the dynamic properties of the cards and theoperation characteristics of vehicles under load conditions.
Description
technical field [0001] The invention relates to an automobile test bench, in particular to a magneto-rheological damping automobile roller test bench and a control method thereof. Background technique [0002] In recent decades, the continuous development of automobile technology has driven the progress of many related industries and technical fields, including the improvement of automobile test technology and the upgrade of test benches. Magneto-rheological damping technology is a new type of semi-active energy absorption technology that has emerged in the past ten years. Magneto-rheological dampers have the advantages of simple structure, convenient control, wide range of damping force adjustment, and continuous adjustability. Currently, they are mainly used in automobiles. Shock absorption of various mechanical equipment. [0003] The automobile roller test bench is generally composed of four parts: a roller device, a power absorbing device (that is, a loading device), a...
Claims
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IPC IPC(8): G01M17/007G05D17/02
CPCG01M17/0074G05D17/02
Inventor 李勇吴浩徐兴王峰仵晓涵江浩斌
Owner JIANGSU UNIV