Shared Control

Stability through co-adaptation

Genesis is built around a simple premise: human motion is intent made physical.
The job of the system is not to replace that intent — it’s to translate it into stable, controlled movement across real environments.

Most HMI systems lean toward one of two extremes.

Some are user-dominant: the person does the stabilization work and the device follows preset behaviors.
Others are autonomy-dominant: the device tries to predict and execute movement with minimal input.

Both approaches break down in the same place: the real world. Terrain changes. Speed changes. Fatigue changes. The user changes. A control system that is either “all you” or “all device” tends to become brittle under variance.

Genesis is designed around a third approach: shared control.

Not manual. Not autonomous. Continuous partnership.

Shared control is not a mode. It’s not a handoff switch.
It’s a continuous partnership between the user and the control system.

• The user provides intent (direction, pace, movement goals).

• ADA manages low-level execution (stabilization, timing, micro-corrections, propulsion shaping).

• Authority is blended and adjusts dynamically in response to the gait cycle and the environment.

The outcome is straightforward: motion that feels natural while requiring less conscious micromanagement.

A system that learns the user

Shared control only works if the system adapts. Genesis is designed to learn the unique “motion language” of each user — how they load the limb, how they transition between phases, how they respond to perturbations, and how they move when conditions change.

As that personalization increases, ADA shifts how control is distributed.

We describe it as three stages:

Baseline

At the beginning, the user is doing most of the work.

ADA is present, instrumented, and responsive — but the control system is primarily observing. It’s mapping the user’s gait dynamics and building the profile that will later drive higher confidence control.

In baseline:

• The user manages stability and propulsion

• ADA tracks and learns

• The system prioritizes predictability and safety

Co-Adaptation

As ADA learns the gait, control becomes shared.

The user remains the source of intent, but ADA begins assuming the repetitive micro-corrections that normally consume attention and energy — the subtle adjustments that make motion stable step to step.

In co-adaptation:

• Intent stays human

• ADA begins handling low-level corrections

• Stability and smoothness improve under variance

This is where shared control becomes tangible: the user feels the reduction in “mental overhead” required to stay controlled.

Collaboration

In the collaboration stage, ADA becomes increasingly responsible for low-level actuation.

This does not mean the user is removed from the loop. It means ADA is now executing a larger share of the control mechanics with high confidence, allowing the user to focus on movement goals rather than movement mechanics.

In collaboration:

• ADA assumes more stabilization and propulsion shaping

• Transitions become smoother and less deliberate

• Neural workload drops while capability increases

This is the point where the device stops feeling like a tool and starts feeling like a native extension.

Why this matters

Shared control is difficult to build because it demands more than a classifier and more than a torque curve.

It requires:

• continuous sensing

• low-latency control

• stable arbitration between user and system

• personalization that improves rather than destabilizes

• validation across everyday use and edge cases

That is why many systems simplify toward mode switching or fixed behaviors. Genesis is built to operate in the opposite direction: toward continuous adaptation.

One loop connects the user, the data, and the control system

Genesis is instrumented for real-world use. As systems are used in real environments, they generate the motion data that trains and validates the next iterations of our controllers.

This is not an abstract “AI” layer. It is a measured loop:

• the user moves

• the system senses

• the controller adapts

• the experience improves

Shared control is the bridge between biomechanics and intelligence: a method for turning human intent into stable movement without demanding the user consciously manage every detail.

Genesis is not manual. And it is not autonomous.
It is a system designed to co-adapt — and to deepen collaboration as it learns with you.