Force sensing analog system based on C-EPS structure

Abstract

The invention discloses a force sensing analog system based on a C-EPS structure. The force sensing analog system comprises a force sensing analog mechanical system based on the C-EPS structure and a force sensing analog control system. The force sensing analog mechanical system comprises a steering wheel, a steering column tube, a servo motor, a rotating angle limiting device, a torque sensor and a steering wheel rotating angle sensor; the force sensing analog control system comprises a controller and a control model; steering by different rotating angle scopes can be achieved through the rotating angle limiting device, and the shortcomings that a C-EPS system mechanical structure is large in inertia, large in friction and the like are overcome through a compensation model including friction compensation, moment differential, inertia compensation, damp compensation and rigidity compensation. The force sensing analog system is a hardware structure based on a volume production C-EPS system, the advantages that the hardware structure is simple and compact in structure, high in mechanical system accuracy, low in cost and the like are effectively used, and the force sensing analog system with aligning torque and excellent force sensing is designed.

Description

technical field [0001] The invention belongs to the field of automobiles, and in particular relates to the road feeling simulation of a steering wheel in automobile steering-by-wire technology, and is a resistance loading simulator. Background technique [0002] The traditional automobile steering system has experienced four development stages: traditional mechanical steering system, hydraulic power steering system, electro-hydraulic power steering system, and electric power steering system. The common feature of these four stages is that they are all mechanically connected, but they are applied in different ways. To improve the performance of the mechanical steering system, it is impossible to overcome the vibration of the steering wheel caused by the impact of the uneven road and the noise and vibration caused by the power steering system. At the same time, the mechanical connection of the system is not conducive to improving the safety of the car collision. Due to the dis...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the fact that the current driver simulator relies on linear elements such as springs or coil springs to perform resistance loading or return to normal, resulting in partial distortion of the force sense; the driver simulator built with torque motors, electromagnetic brakes, and damping motors is bulky and complex in structure. Unable to load and other problems

Images