Compact. Efficient. Powerful. The
foundation for a new era of motion
enabling machines across
every field that depends on it.
COLLABORATION SPOTLIGHT:
CSUN DESIGN SMART LAB
Principle Robotics delivers the actuators
robotics has been waiting for—compact, powerful, and scalable across
industries.
Robotics has been held back by actuators that
force trade-offs. Fast and precise means weak. Strong means heavy.
Compact means fragile or overly complex. Scale those limitations down
to the size of a human hand, and the problem becomes almost
unsolvable.
We've changed that!
We’ve built a new class of actuator which are more
compact, lightweight, and powerful. We've eliminated those
compromises. Our prototypes already drive a 23-DoF humanoid hand with
high force, repeatability, and speed across multiple scales.
This
isn’t lab theory. Our designs are validated through real-world use,
engineered from first principles, and built with manufacturability in
mind. The same architecture that powers our fine manipulations will
soon be in UAV payloads, animatronics, and medical devices.
We
are turning one of robotics’ hardest problems into a platform
technology. The opportunity spans markets wherever precision actuation
limits innovation.
THRUST
SPEED
AT-THE-JOINT MASS
REPEATABILITY
OUTER DIAMETER
TOTAL SYSTEM WEIGHT
LONG LINE
NON-PRODUCTIVE TRAVEL
Under 5 grams, designed for high-performance robotics without
bulk.
Supports both backdrivable and non-backdrivable setups.
Delivers a natural, intuitive sense of touch.
Full-powered actuation with a direct human safety control.
Easily reconfigured to fit different systems and designs.
Built-in selective antagonistic compliance for smooth, human-safe motion.
No tedious per-joint recalculations like tendon or linkage systems.
Space and weight are always at a premium. With less than 10 millimeters of non-productive travel, a joint weight under five grams, and a sensorless architecture, our actuators turn wasted space into working space, giving you the freedom to design without compromise.
We remove the need for tendon-based systems. Each joint is independently driven and controlled, isolating motion to its own degree of freedom. The result is fewer kinematic couplings, simpler control, and more precise manipulation.
Our ongoing work focuses on uniting position sensing with force feedback in a single system. Force feedback provides responsive interaction, while positional awareness delivers precise and stable control. Together, these signals produce more intuitive motion and enable advanced applications such as delicate manipulation and collaborative robotics.
Our actuators introduce a capability we call adaptive compliance. With compact precision actuators, sensorless force and position feedback, joint compliance can be precisely controlled. Even the strongest joints built from the toughest materials can become fully compliant and then adaptively stiffened. This advancement is being integrated into the latest version of our humanoid hand.
We are entering the next phase of research and development and expanding our team to meet the challenge. We are seeking a Senior Electrical Engineer and a Senior Programmer with expertise in robotics. These roles are integral to advancing our technology and ensuring seamless system integration. If you are interested in advancing this work with us, please use the form below to submit your information.
We’d love to hear from potential collaborators and partners.
Los Angeles, CA
Built for Tomorrow.
All rights reserved.