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Method for calculating electronic differential speed of electric vehicle

A technology of electronic differential speed and calculation method, which is applied in the direction of electric vehicles, electrical devices, control drives, etc., to achieve the effect of flexible driving and driving safety

Inactive Publication Date: 2019-01-18
林洪立
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  • Application Information

AI Technical Summary

Problems solved by technology

Because, when the car is actually running, because the maximum angle of the inner wheel is 39.6 degrees and the maximum angle of the outer wheel is 33.5 degrees when turning, there is an angle difference between the two front wheels, and the rear wheels run on the same axis. Fixed, it is impossible to use the arc formula to calculate

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  • Method for calculating electronic differential speed of electric vehicle

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Embodiment Construction

[0012] exist figure 1 Among them, when the electric vehicle is running straight, the left and right corners of the steering angle sensor 3 are 0, outputting a straight-going signal, and the ECU computer 5 outputs a 1:1 acceleration sensor 4 signal to both the left controller 6 and the right controller 7, and the controller controls the battery pack 8 Output the same drive rotation speed current signal to the left and right wheel drive motors 1 to control the left and right wheel drive motors 1 to run at the same speed.

[0013] When the electric vehicle turns left, the steering angle sensor 3 outputs the same signal as the steering angle to the ECU computer 5, and the ECU computer 5 transmits the acceleration sensor 4 signal 1:1 to the right controller 7 to drive the right wheel motor to run; the ECU computer 5 According to the angle signal of turning left, the signal of the acceleration sensor 4 is calculated at a ratio of 1: (0.6-1), and sent to the left controller 6 to driv...

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Abstract

A method for calculating the electronic differential speed of an electric vehicle is provided, which belongs to the drive field of electric vehicles. The invention utilizes the phenomenon that the movement distance between the outer wheel and the inner wheel is fixed between 1: (0.6-1) when the vehicle is steering, the larger the rotation angle is, the smaller the ratio of the movement distance between the outer wheel and the inner wheel is, and the larger the movement distance difference is. The ECU computer calculates the acceleration sensor signal based on the left turn signal or the rightturn signal provided by the steering angle sensor. When steering, the outer wheel movement distance is set to 1 as the reference, and the ratio of the outer wheel movement distance to the inner wheelmovement distance is between 1: (0.6-1). Calculate 0.6-1. Acting on the controller, the inner wheel controller signal=1*a1 / a*(1*0.68)*n. The invention realizes the electronic differential speed through simple calculation, so that the hub motor and the wheel-side motor are driven safely, stably, reliably and efficiently to give full play to the flexible driving of the motor drive.

Description

Technical field [0001] The invention relates to a method for calculating an electronic differential speed of an electric vehicle, which belongs to the field of electric vehicle drive. Background technique [0002] At present, electric vehicles have become the first choice for clean energy, and there is no mature technology in electronic differential drive. Because, when the car is actually running, because the maximum angle of the inner wheel is 39.6 degrees and the maximum angle of the outer wheel is 33.5 degrees when turning, there is an angle difference between the two front wheels, and the rear wheels run on the same axis. Fixed, it is impossible to use the arc formula to calculate. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the present invention provides a method for calculating the electronic differential speed of an electric vehicle. The purpose of electronic differential power distribution can be achieved by a simpl...

Claims

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Application Information

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IPC IPC(8): B60L15/20
CPCB60L15/2036B60L2220/46B60L2240/421B60L2240/461Y02T10/72
Inventor 林洪立
Owner 林洪立
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