A Calculation Method of Power Assist Characteristic Table of Electric Power Steering System
A technology of electric power steering and calculation method, which is applied to the control of automobile electric power steering system and the basic power assist characteristics of electric power steering system, can solve the problems of shortening EPS development cycle, reducing EPS research and development cost, difficult to control driving style, etc. The effect of calibration difficulty and workload, shortening development cycle and improving quality
Active Publication Date: 2021-06-11
JILIN UNIV
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[0004] The purpose of the present invention is to solve the problem that it is difficult to iteratively correct the EPS basic boost characteristic table in real vehicle field tests and to control the driving style, resulting in a bad driving experience, and proposes a calculation method for EPS basic boost characteristics based on the decoupling of EPS boost characteristics , to solve the problems of difficult calibration of EPS basic booster characteristic table and difficulty in controlling the driving style of the car, shorten the EPS development cycle, and reduce the cost of EPS research and development
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[0020] In order to fully express the purpose, technical solutions and advantages of the present invention, the present invention will be described in detail in conjunction with the following drawings. In order to fully understand, the specific implementation examples described here are only used to explain the present invention, and are not limited to the present invention.
[0021] The calibration method of the present invention is composed of a driving style module, a vehicle chassis dynamics inverse characteristic module and a steering system dynamics inverse characteristic module, and the schematic diagram of the scheme is as follows figure 1 shown. The driving style module is the relationship between the driver's steering operation amount-steering wheel torque and the vehicle's steady-state steering movement intensity, which characterizes the driver's expectation for the vehicle's movement trend. The vehicle chassis dynamics inverse characteristic module is the relationsh...
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The invention discloses a method for calculating a boost characteristic table of an electric power steering system, which belongs to the technical field of automobile electric power steering system control. The problem that the driving feeling of the car is not good, the inverse characteristics of the vehicle chassis dynamics and the inverse characteristics of the steering system dynamics are inherent characteristics of the vehicle, the present invention decomposes the EPS basic power-assisted characteristic table into driving style, vehicle chassis dynamics Three modules of system dynamics and inverse characteristics, all of which have clear physical meanings, make the calibration of EPS basic power meter have a theoretical basis, reduce the difficulty and workload of EPS basic power meter calibration, and shorten the EPS development cycle. By designing the driving style module, the invention can directly control the driving style of the car, adjust the driving feeling of the car, take into account the requirements of driving feeling and power assistance, and improve the quality of the EPS.
Description
technical field [0001] The invention belongs to the technical field of automobile electric power steering system control, relates to an electric power steering system, and in particular relates to the basic boosting characteristics of the electric power steering system. Background technique [0002] In recent years, electric power steering system (EPS) has been widely used in automobiles due to its many advantages. A good power steering system should take into account the requirements of portability, stability and driving style, and give people a good driving experience. EPS basically assists The characteristic table determines the EPS steady-state boosting effect, which has a great influence on the steering performance of the car. At present, the adjustment of the EPS booster characteristic table is usually in the later stage of the development of automobile products, and the driving feeling is indirectly adjusted through the iterative optimization of the actual vehicle fie...
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IPC IPC(8): B62D5/04B62D6/00B62D113/00B62D119/00
CPCB62D5/0463B62D5/0466B62D6/00
Inventor 管欣张育宁卢萍萍雍文亮詹军段春光
Owner JILIN UNIV