Power-assisted steering system special for electric automobile

Abstract

The invention relates to a power-assisted steering system special for an electric automobile. The power-assisted steering system comprises a steering wheel, wherein the steering wheel is connected with a steering gear through a steering shaft, the steering gear is connected with front wheels through a connection rod mechanism, and a torque sensor is arranged on the steering shaft and connected with a controller through a data line. A motor is arranged on an automobile chassis and connected with a clutch, the clutch is connected with a speed reducer, an output shaft of the speed reducer is connected with the steering shaft, an angle sensor is arranged on an output shaft of the motor and connected with the controller through a data line, the controller is connected with the motor through the data line, the motor is connected with an electric automobile battery pack through a battery pack wire, and a speed sensor of the automobile is connected with the controller through a data line. The power-assisted steering system is driven by the motor and provided with the controller, and the controller detects speed signals and steering wheel rotating shaft torque signals in the driving process of the electric automobile and controls output torque, rotating angles and rotating directions of the motor through the signals so as to lead the motor to drive the front wheels of the automobile to steer.

Description

Technical field: [0001] The invention belongs to the technical field of electric vehicles, and in particular relates to a special steering assist system for electric vehicles. Background technique: [0002] Environmental pollution, energy depletion, people are exploring, developing, using renewable energy to drive cars. Discovered and developed such as new energy vehicles such as wind-powered vehicles, magnetic-powered vehicles, and solar vehicles, but these new energy vehicles have complex structures, clumsy shapes, low efficiency, and are not suitable for long-distance operation, so these new energy vehicles are not practical. Large, so it has not been able to get a large area of ​​promotion and application. [0003] In order to solve the existing environmental and energy problems, people have developed and promoted electric vehicles. Electric vehicles are gradually accepted by people because of their zero emissions. Moreover, with the development of electric vehicle te...

AI Technical Summary

Problems solved by technology

Discovered and developed such as new energy vehicles such as wind-powered vehicles, magnetic-powered vehicles, and solar vehicles, but these new energy vehicles have complex structures, clumsy shapes, low efficiency, and are not suitable for long-distance operation, so these new energy vehicles are not practical. Large, so it has not been able to get a large area of ​​promotion and application

[0003] In order to solve the existing environmental problems and energy problems, people have developed and promoted electric vehicles, which are gradually accepted by people because of their zero emissions. With the development of electric vehicle technology, its original long-distance use and charging problems have been gradually solved. Therefore, there are more and more users of electric vehicles. However, the steering system used in all current electric vehicles is still a transmission system. The steering system of fuel vehicles, that is, the mechanical hydraulic power steering system. The mechanical hydraulic power steering system has a complex structure, heavy weight, and low sensitivity. Steering requires a lot of power and takes up a lot of space. Therefore, the body weight should be reduced as much as possible, unnecessary energy waste should be reduced, and the limited energy can be used as much as possible for the driving of the car. Therefore, the mechanical hydraulic power steering system of the transmission can no longer meet the needs of electric vehicles. , developing a responsive and energy-efficient steering system for electric vehicles remains a challenge for technicians

Images