Reduced complexity, improved driveability, and increased energy efficiency are among the advantages which can be obtained through (on-board) computer control of powertrains in both conventional and electric vehicles. This paper describes the design and implementation of a control system for an advanced electric vehicle powertrain, incorporating an integrated induction motor and two speed automatic transaxle. The control system employs a distributed computer architecture utilizing a fiber optic communication system for computer coordination. Direct computer control of the clutches in the transmission results in smooth gear shifts without requiring a torque converter. Final testing and evaluation of the vehicle has verified the effectiveness of this control system in providing excellent driveability while maintaining good energy efficiency.
Samenvatting