PAYLOAD ESTIMATION USING ELECTRIC POWER STEERING SIGNALS

摘要

A payload estimation system and a method for estimating payload estimation using electric power steering (EPS) signals are provided. In certain embodiments, the aspects of the invention may include: receiving, by a payload detection module, multiple EPS signals to generate an additional axle load factor, determining, by a blend factor table, a load blend factor according to the additional axle load factor, generating, by a first multiplier, a blended nominal base assist signal by combining the load blend factor and a handwheel torque signal processed by a nominal base assist module, generating, by a second multiplier, a blended highload base assist signal by combining the load blend factor and the handwheel torque signal processed by a highload base assist module, and combining, by a merge module, the blended nominal base assist and the blended highload base assist to generate a motor torque command for the EPS system.

主权项

1. A payload estimation system of an electric power steering (EPS) system comprising:
a payload detection module configured to detect payload according to a plurality of EPS signals and generate an axle load factor; a blend factor table configured to determine a load blend factor according to the axle load factor; a nominal base assist module configured to generate a nominal base assist based on a handwheel torque signal; a highload base assist module configured to generate a highload base assist based on the handwheel torque; and a signal combiner configured to combine a blended nominal base assist and a blended highload base assist to generate a motor torque command.