Wire-controlled chassis of unmanned electric vehicle

Abstract

The invention provides a wire-controlled chassis of a unmanned electric vehicle. The wire-controlled chassis is characterized by comprising a power supply, a vehicle control unit(VCU), a steering servo driver, a push rod motor, a traction motor driver, an encoder and sensors distributed on the chassis of the vehicle; the steering structure of the original step chassis is replaced by the steering servo motor, the precise position control characteristic of the steering servo motor is used for achieving the purpose of accurate wire-controlled steering, and the steering control of a traditional electric vehicle is replaced; the push rod motor is adopted as the driving force of a hydraulic disc brake, and the push rod motor is controlled directly by the VCU to replace the traditional braking mode. The VCU modulates and outputs precisely adjustable analog quantity through a built-in DAC converter to replace the handlebar-turning-type speed control of the traditional electric vehicle. A customized built-in encoder feeds back the rotating speed of the vehicle in real time to adjust the speed and learn the processing speed information. According to the wire-controlled chassis, artificial control can be completely gotten rid of through the wire-controlled system of the VCU, and the chassis can be operated independently.

Description

technical field [0001] The invention relates to the technical field of a control-by-wire chassis, in particular to a control-by-wire chassis of an unmanned electric vehicle. Background technique [0002] The traditional chassis is like this: it is composed of transmission system, steering system, braking system and driving system. The driver's control command is transmitted to the actuator through a series of mechanical devices. The actuator starts to execute the functional device. [0003] The disadvantages of the traditional chassis are: the traditional mechanical device for transmitting commands is often bulky and complicated; the control of the whole vehicle is not precise enough, and the error is large, and the execution deviation caused by the transmission is prone to occur; [0004] In order to overcome the defects of the traditional chassis, the control-by-wire chassis came into being. The existing structure of the control-by-wire chassis is: [0005] Transmission...

AI Technical Summary

Problems solved by technology

[0003] The disadvantages of the traditional chassis are: the traditional mechanical device for transmitting commands is often bulky and complicated; the control of the whole vehicle is not precise enough, and the error is large, and the execution deviation caused by the transmission is prone to occur;

[0006] However, the defects of the existing control-by-wire chassis are: although the control-by-wire technology is realized, human-computer interaction is still required in the end, and human-computer interaction structural devices such as seats and steering wheels need to be reserved for human operation, and cannot operate autonomously.

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