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Braking anti-slip method of electric bicycle based on acceleration detection

An electric moped and acceleration technology, which is applied to bicycle brakes, vehicle parts, bicycle accessories, etc., can solve the problems of harsh working environment, less brake slip resistance, and low shock absorption performance, and achieve broad application prospects and reduce costs.

Active Publication Date: 2019-04-26
无锡长元新能源电动车科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the brake anti-skid and anti-lock brake technologies in the prior art are applied to automobiles, most of them involve the use of wheel speed sensors, and the cost is very high
In addition, because the shock absorption performance of electric mopeds is lower than that of cars, and they are often driven on bumpy roads, their working environment is harsh, and the wheel speed sensor is prone to failure. Therefore, brake anti-skid and anti-lock braking technologies are rarely used in the field of electric mopeds

Method used

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  • Braking anti-slip method of electric bicycle based on acceleration detection
  • Braking anti-slip method of electric bicycle based on acceleration detection
  • Braking anti-slip method of electric bicycle based on acceleration detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1As shown, a method for anti-skid braking of an electric bicycle based on acceleration detection comprises the following steps:

[0039] (1) The first acceleration sensor acquires the acceleration a of the wheel center of the driving wheel 1 , sent to the first data processing chip through wireless communication, and the first data processing chip uses the wheel radius r to calculate the driving wheel reference angular acceleration ω 1 ; the formula is:

[0040] (2) The second acceleration sensor acquires the acceleration a of the wheel center of the driven wheel 2 , sent to the first data processing chip through wireless communication, and the first data processing chip uses the wheel radius r to calculate the reference angular acceleration ω of the driven wheel 2 ; the formula is:

[0041] (3) The third acceleration sensor acquires the acceleration a of the electric bicycle near the center of mass 3 ;

[0042] The third acceleration sensor is ...

Embodiment 2

[0054] A brake anti-skid device for an electric bicycle based on acceleration detection, comprising a first acceleration sensor, a second acceleration sensor, a third acceleration sensor, a first torque detector, a second torque detector, an electric bicycle MCU, and a first data processing chip , a second data processing chip, a comparator, a gain adjustment controller, a butterfly brake pump for driving wheels, a butterfly brake pump for driven wheels, and a brake assembly.

[0055] The first acceleration sensor is used to obtain the acceleration of the wheel center of the driving wheel, and is installed on the central axis of the driving wheel wheel; the second acceleration sensor is used to obtain the acceleration of the wheel center of the driven wheel, and is installed on the central axis of the driven wheel wheel The third acceleration sensor is used to obtain the acceleration near the center of mass of the electric bicycle, and is installed on the side wall of the batte...

Embodiment 3

[0059] simulation test

[0060] Simulation scenario: The vehicle enters a 30-meter-long low-friction road in about 2.5 seconds.

[0061] figure 2 , image 3 Represented the effect comparison diagram before and after utilizing the brake anti-skid method of the electric assist vehicle according to Embodiment 1 of the present invention, wherein figure 2 Represents the result of not applying the brake anti-skid method of the electric assist vehicle according to Embodiment 1 of the present invention, image 3 It shows the result of applying the brake anti-skid method of the electric assist vehicle according to Embodiment 1 of the present invention. From figure 2 It can be seen that under the condition of no control, the wheels of the electric bicycle obviously slip, while image 3 During the test, the wheels of the electric moped only slipped slightly. Depend on Figure 4 It can be seen that when the method of the present invention is implemented, the output torque of the...

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PUM

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Abstract

The invention discloses an electric power-assisted vehicle braking anti-skid method based on acceleration detection. The electric power-assisted vehicle braking anti-skid method mainly comprises the following steps that the acceleration of the centers of a driving wheel and a driven wheel are obtained; driving reference angle acceleration is calculated; the acceleration of an electric power-assisted vehicle is obtained; the nominal angle acceleration of the vehicle is calculated; driving wheel angle acceleration is compared, and compensation torque is calculated and adjusted; and driven wheel angle acceleration is compared and adjusted. According to the electric power-assisted vehicle applying the method, a wheel speed sensor is not used, thus the braking anti-skid cost of the electric power-assisted vehicle is reduced, when the electric power-assisted vehicle travels on a pavement with the low adhesion coefficient, the good braking anti-skid and anti-locking control effects can be achieved, and the electric power-assisted vehicle has wide application prospects in the field of electric power-assisted vehicle travelling safety.

Description

technical field [0001] The invention relates to a braking anti-skid and anti-lock method for an electric power-assisted vehicle, in particular to a braking anti-skid method for an electric power-assisted vehicle based on acceleration detection. Background technique [0002] The electric moped is driven by the battery on the vehicle, and has the characteristics of energy saving, environmental protection and portability. In recent years, the number of electric bicycles manufactured and used in my country has shown a rapid growth trend, which has improved the urban air and noise pollution problems to a certain extent. [0003] With the development of technology, people have higher and higher requirements for the safety of electric bicycles. When the electric bicycles of the prior art are driving on slippery roads, the wheels will easily slip, and when braking, the wheels will be locked, resulting in vehicle failure. The phenomenon of slippage, especially in emergency situation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62M6/45B62M6/50B62L1/02
CPCB62L1/02B62M6/45B62M6/50
Inventor 殷德军朱德意陈昊
Owner 无锡长元新能源电动车科技发展有限公司