Attitude feedback for humanoid & intelligent robots

A humanoid is a 40-DOF inverted pendulum that walks. Every joint controller downstream of the whole-body loop is only as good as the attitude reference feeding it — and that reference has to arrive at loop speed, survive footfall impacts, and weigh almost nothing. The GMU761 puts IMU, VRU and AHRS in one 5-gram module that does exactly that.

0.15° roll & pitch (dynamic)

Up to 1 kHz attitude output

12.1 mm · ≤5 g embeddable

Why humanoids need a 1 kHz attitude module, not a hobby AHRS

Walking balance is a continuous argument between gravity and the joint controllers, and the whole-body loop runs at hundreds of hertz. The GMU761 answers at up to 1 kHz — 0.15° roll/pitch (1σ) in dynamic gait, no heading drift accumulating step to step, all inside a 12.1 × 12.1 × 3.2 mm, ≤5 g module that survives 500 g shock.

Typical use case

One module, three jobs in every step

Torso attitude for whole-body balance control — bolted to the torso frame close to the center of mass, roll and pitch stream to the balance controller at up to 1 kHz, and yaw rate supplements the gait planner during turns.
Gait state estimation under footfall impact — ±2000°/s gyro range and a 50 Hz bandwidth capture the angular-rate spikes of heel strike without saturation, feeding the state estimator clean data between steps.
Fall detection and recovery triggering — fast attitude plus angular-rate thresholds give the safety layer an early, low-latency signal to trigger protective motion before the fall completes.