Load Cell Steering Control for Bi-Directional Mobility Devices

The patent divides the steering control system into multiple independent load cell units positioned at different locations (front left, front right, rear left, rear right). Each load cell measures force in a specific direction, and the controller integrates these segmented measurements to determine steering input. This segmentation allows using multiple simple, low-cost sensors instead of one complex expensive sensor while achieving comparable or superior measurement capability.

The patent introduces a controller as an intermediary that processes signals from multiple load cells and calculates steering parameters. The controller acts as a mediator that transforms simple force measurements from inexpensive load cells into accurate steering control commands, replacing the need for a complex expensive F/T sensor while achieving the same functional outcome.

The patent replaces the electrical/physiological EMG sensor system with a mechanical force sensing system using load cells. Instead of measuring electrical signals from muscles, the system directly measures mechanical forces applied to the handlebars through load cells. This mechanical substitution provides more reliable and consistent measurements while maintaining steering capability.

The load cell system measures forces that the user naturally applies when steering, requiring no additional user effort or special techniques. The system passively captures steering intent through normal handling forces, making it self-service and eliminating the signal acquisition problems associated with EMG sensors that require proper electrode placement and signal processing.