Method and system for electric power steering

An electric power steering system, comprising:

• a steering wheel in operable communication with a mechanical linkage;
• a steering shaft in operable communication with the mechanical linkage, and in operable communication with at least one road wheel;
• a first transmission in operable communication with the steering shaft;
• a unidirectional electric motor in operable communication with the first transmission;
• wherein the electric power steering system is configured such that when the steering wheel is turned in a first direction, the motor's power is transmitted in the first direction to the steering shaft, and when the steering wheel is turned in a second direction, the motor's power is transmitted in the second direction to the steering shaft;
• and
• wherein the first transmission includes a first planetary gear in operable communication with the motor and a first clutch in operable communication with the first planetary gear, wherein the first clutch is configured to transmit rotative energy from the first planetary gear to a steering shaft sleeve.

A steering system comprising:

• a steering shaft;
• a first transmission in operable communication with the steering shaft;
• a second transmission in operable communication with the steering shaft;
• a motor in operable communication with both the first transmission and the second transmission;
• and,
• a gear system operably positioned between the second transmission and the motor, wherein the gear system changes rotation input in a first direction to an output rotation in an opposite direction from the first direction and wherein the first transmission includes a first planetary gear and the second transmission includes a second planetary gear.

A steering system comprising:

• a steering shaft;
• a first transmission in operable communication with the steering shaft;
• a second transmission in operable communication with the steering shaft;
• a motor in operable communication with both the first transmission and the second transmission;
• and,
• a gear system operably positioned between the second transmission and the motor, wherein the gear system changes rotation input in a first direction to an output rotation in an opposite direction from the first direction;
• wherein the first and second planetary gears each include a sun gear, a planet gear, and a ring gear.