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Differential control system for electric bridges of double-hub electric four-wheeler

An electric four-wheel vehicle and control system technology, applied in electric vehicles, control drives, vehicle components, etc., can solve the problems of complex control structure, high cost, lack of universality, etc., and achieve simple control algorithm, low cost, easy-to-achieve effects

Inactive Publication Date: 2015-07-22
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above electronic differential control requires speed sensors, angle sensors or complex vehicle models and control algorithms, which have the characteristics of high cost, complex control structure, etc., and are not universal

Method used

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  • Differential control system for electric bridges of double-hub electric four-wheeler
  • Differential control system for electric bridges of double-hub electric four-wheeler

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing, the present invention will be further described through embodiment.

[0021] The double-hub type electric four-wheel vehicle bridge differential speed control system of the present invention, such as figure 1 As shown, the left bridge (6) in the system is composed of two fixed resistors with the same resistance and two outputs RL1 and RL2 of the adjustable resistor RL, and the right bridge (7) is composed of two fixed resistors with the same resistance and the two outputs RR1 and RR2 of the adjustable resistor RR; the fixed resistor resistance values ​​of the left bridge (6) and the right bridge (7) are all equal; the total resistance values ​​of the adjustable resistor RL and the adjustable resistor RR are equal, And it is twice the resistance value of the fixed resistor in the bridge.

[0022] The steering wheel (8) is connected with the sun gear (9) of the planetary gear mechanism, the ring gear (10) is fixed, and...

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Abstract

The invention relates to a differential control system for electric bridges of a double-hub electric four-wheeler. The control system comprises a planetary gear mechanism, an adjustable resistor RL, an adjustable resistor RR, the left electric bridge, the right electric bridge, a left hub motor controller, a right hub motor controller, a left hub motor and a right hub motor. Two outputs RL1 and RL2 of the adjustable resistor RL serve as two bridge arms of the left electric bridge, and two outputs RR1 and RR2 of the adjustable resistor RR serve as two bridge arms of the right electric bridge. During straight driving, the resistance value of the left electric bridge and the resistance value of the right electric bridge are equal, the left electric bridge and the right electric bridge are both in a balanced state, control voltage input to the left hub motor controller and control voltage input to the right hub motor controller are equal, and the rotating speed of the left hub motor and the rotating speed of the right hub motor are equal. During turning, a steering wheel drives the adjustable resistor RL and the adjustable resistor RR to rotate through the planetary gear mechanism, the resistance value of the RL1 and the resistance value of the RL2 change reversely, the resistance value of the RR1 and the resistance value of the RR2 change reversely, the left electric bridge and the right electric bridge lose balance, output voltage of the left electric bridge and the output voltage of the right electric bridge change reversely, and control voltage input to the left hub motor controller and control voltage input to the right hub motor controller change reversely; in this way, the rotating speed of the left hub motor and the rotating speed of the right hub motor are unequal, and differential turning movement is formed. Compared with a mechanical differential mechanism and an electronic differential mechanism, the differential control system for the electric bridges has the advantages of being simple in structure, small in size, low in cost and the like.

Description

technical field [0001] The invention belongs to the technical field of double-hub electric four-wheel vehicle control, in particular to a miniature double-hub electric four-wheel electric bridge differential control system. Background technique [0002] With the development of my country's electric vehicle market, low-speed miniature electric four-wheel vehicles have entered the market rapidly. Due to the independent suspension and hub motor drive technology, the double-hub electric four-wheel vehicle has the characteristics of comfortable ride, low noise and large storage space, and has been widely valued by the electric four-wheel vehicle industry. But the differential speed control of double-hub motors has always been the main factor restricting the development of double-hub electric four-wheel vehicles. At present, the differential speed control of dual hub motors mainly adopts electronic differential, but electronic differential has the characteristics of complex c...

Claims

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Application Information

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IPC IPC(8): B60L15/32B62D11/04
Inventor 胡晓明时为超吕猛
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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