The invention discloses an automobile electric hydraulic power steering system control method. A controller collects a vehicle speed signal and a steering wheel angle speed signal, and a motor target speed value is determined by an assistance characteristic curve determined by vehicle parameters and EHPS system parameters according to a steering wheel torque preferred by a driver and a variation curve of lateral acceleration and travel speed. By virtue of a double closed loop control system of outer ring rotational speed control and inner ring current control, the revolving speed of an oil pump-driven motor is subjected to self-adaptive fuzzy PID control, the target speed of an oil pump-driving motor is controlled, and the output flow of a hydraulic oil pump is indirectly controlled, so the relaxation and convenience of directional steering and steering hand feeling are satisfied, the purpose of energy consumption reduction is also achieved, and the manipulation and safety of automobile driving are effectively improved.
Automobile electric hydraulic power steering system control method
2016-01-20
Patent
Elektronische Ressource
Englisch
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
Automobile hydraulic power-assisted steering control system and method
Europäisches Patentamt | 2022
|Automobile electric power steering hardware control system
Europäisches Patentamt | 2023
|Tubular column type electric control hydraulic power-assisted steering system of small automobile
Europäisches Patentamt | 2020
|