Estimating a payload using signals from an electric power steering

摘要

Technical solutions are described for a payload detection module that detects a payload using one or more steering system control signals and generates an axle load factor. An exemplary payload detection module includes a rack torque module to determine a rack torque, a reference model module to determine a reference rack torque for the steering system based on a load scale factor, and a load factor calculation module to calculate the axle load factor based on a difference between the rack torque and the reference rack torque , Further, a blending factor module determines a blending factor in accordance with the axis load factor. Further, a signal combiner combines a mixed nominal base support and a mixed high load base support in accordance with the mixing factor, wherein the combination modifies a motor torque command, wherein the motor torque command is sent to a motor to generate an assist torque.