SOC-based automobile electric power steering system assisting characteristic curve design method

• Main Authors: XU GUANGFEI, WANG FENGBO, WU HAIRONG, WU JIAN
• Format: Patent
• Language: Chinese; English
• Published: 22.06.2018
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention discloses an SOC-based automobile electric power steering system assisting characteristic curve design method. Considering the battery SOC condition, the SOC is divided into three kinds,namely, SOC is smaller than 40%, SOC is larger than 40% and smaller than 70%, and SOC is larger than 70%; for the condition that SOC is smaller than 40%, segment treatment is performed correspondingto a curve assisting characteristic curve; for the condition that SOC is larger than 40% and smaller than 70%, secondary exponential smoothing is performed; for the condition that SOC is larger than 70%, primary exponential smoothing is performed. On the basis of considering electric power automobile battery energy management, the assisting characteristic curve is reasonably designed, the power-assisted steering performance can be remarkably improved, the phenomena that power supply of an assisted motor is not continuous due to the fact that torque of the hand changes rapidly or the hand torque operation is large, and