Method for designing power-assisted current characteristic curve of hybrid electric control steering system in consideration of energy consumption

• Main Authors: YIN CHENHUI, LI WAGANG, ZHU CHEN, JIANG HAOBIN, YIN YUE, ZHANG DI, LIN ZIYAN, HUANG YINGQIU, TANG BIN
• Format: Patent
• Language: Chinese; English
• Published: 20.08.2019
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention discloses a method for designing a power-assisted current characteristic curve of a hybrid electric control steering system in consideration of energy consumption. A power assisting value Te + Ty required by a steering system and the overall power loss P = Pe + Peh of a hybrid electric control steering system under the input of each vehicle speed and each rotation angle are calculated; the power loss P = Pe + Peh and Te + Ty is taken as an objective function and constraint conditions of a particle swarm optimization algorithm respectively; a particle swarm optimization algorithmis utilized to obtain a real-time optimal current value iebest of the direct current motor of the electric subsystem and a real-time optimal current value iybest of the driving motor of the electric pump under the condition that the overall power loss of the steering system is minimum; a relation curve between the iebest and the driver good hand moment Th under different working conditions is generated; a relation curve b