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Braking antiskid method for electric power-assisted vehicle driven by wheel hub motor

A technology for electric bicycles and in-wheel motors, which is applied in electric vehicles, electric vehicle charging technology, brakes, etc., can solve the problems of large calculation amount and high hardware processor requirements, and achieve the effect of reducing braking and good braking and anti-skid effect.

Active Publication Date: 2017-09-01
无锡南理工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

Since the existing anti-skid and anti-lock brake control systems are basically used in automobiles, it involves a large amount of calculation and requires relatively high hardware processors.

Method used

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  • Braking antiskid method for electric power-assisted vehicle driven by wheel hub motor
  • Braking antiskid method for electric power-assisted vehicle driven by wheel hub motor
  • Braking antiskid method for electric power-assisted vehicle driven by wheel hub motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Such as figure 1 As shown, a brake anti-skid method for a hub motor driven electric bicycle comprises the following steps:

[0055] (1) Calculation of the driving force of the front driving wheel:

[0056] Use the first angular velocity sensor to obtain the angular velocity of the front drive wheel Send it to the first data processing chip through wireless communication, and the first data processing chip calculates the driving force F of the front driving wheel 1 , the formula is: Among them, T 1 * is the torque of the front drive wheels, is the angular velocity of the front driving wheel, r is the radius of the wheel, J w is the moment of inertia of the wheel.

[0057] The torque T of the front drive wheels 1 * That is, the first power torque output by the driver, the first power torque T 1 * It is the motor torque of the electric power assist vehicle, which is provided by one or more motors and output by the upper controller, and the upper controller is...

Embodiment 2

[0073] The object of the second aspect of the present invention is to provide a brake anti-skid device for an in-wheel motor-driven electric bicycle, which at least includes a first angular velocity sensor, a first moment detector, a first data processing chip, a second angular velocity sensor, a first Second torque detector, third torque detector, second data processing chip, acceleration sensor, data memory, third data processing chip, electric bicycle MCU, comparator, gain adjustment controller, motor controller.

[0074] The first angular velocity sensor is used to obtain the angular velocity of the center of the front driving wheel wheel, and is installed at the central axis of the front driving wheel wheel. The first torque detector is used to detect the torque output of the front driving wheels, and is connected with the upper controller of the driver of the front driving wheels, and the upper controller is an accelerator pedal, a brake pedal, and a motor controller of t...

Embodiment 3

[0081] simulation test

[0082] Simulation scenario: The vehicle enters a 30-meter-long low-friction road in about 3 seconds.

[0083] from Figure 4 It can be seen that when the method of the present invention is implemented, the output torque of the electric bicycle changes. figure 2 , image 3 Represents the effect comparison diagram before and after the brake anti-skid method for the in-wheel motor-driven electric assist vehicle of embodiment 1 and embodiment 2 of the present invention, wherein figure 2 Represents the result of not applying the brake anti-skid method for the in-wheel motor drive type electric bicycle of embodiment 1 and embodiment 2 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 and Embodiment 2 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 ...

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PUM

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Abstract

The invention discloses a braking antiskid method for an electric power-assisted vehicle driven by a wheel hub motor. The braking antiskid method comprises the following steps of calculation of driving force of front and rear driving wheels, calculation of nominal torque values and comparison and adjustment of the torque values. According to the braking antiskid method for the electric power-assisted vehicle driven by the wheel hub motor, an angular speed sensor and a wheel speed sensor are applied, through calculation and comparison of torque, the purpose of braking skid resistance of the electric power-assisted vehicle driven by the two wheels is achieved, and wide application prospects are achieved.

Description

technical field [0001] The invention relates to a braking anti-skid method for electric bicycles, in particular to a braking anti-skid method for hub motor-driven electric bicycles, and belongs to the field of new energy electromechanical. 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] Along with the development of technology, people are more and more higher to the safety requirement of electric moped, and most of the electric mopeds of the prior art use single-wheel drive. However, a small number of electric mopeds using two-wheel drive cannot accurately control and estimate the weight shared by each drive wheel, making the anti-skid contr...

Claims

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Application Information

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IPC IPC(8): B62M6/50B60T8/17B60T8/1761B60L15/20
CPCB60L15/2009B60L2200/46B60T8/1706B60T8/1761B62M6/50Y02T10/72Y02T90/16
Inventor 殷德军朱德意陈昊
Owner 无锡南理工新能源电动车科技发展有限公司