Today’s humanoid robots are performing tasks that until recently were considered impossible thanks to advanced functions that go hand-in-hand with high-performance motion components. Although the latest-and-greatest components may seem appealing, they may not meet all your design objectives. That’s why it’s important to carefully consider several factors inherent to humanoid systems. This blog post will present some objectives designers commonly face when specifying motion components to improve their humanoid’s performance and functionality, along with ways component manufacturers can help them navigate the trade-offs.

Performance Improvements Involve Motion Trade-Offs
When increasing system performance in humanoids, engineers are only limited by their ability to conceive how to achieve their motion goals. Humanoid designs come with trade-offs that typically mean asking difficult questions and having a trusted motion component supplier assess their needs, educate them on their options and help provide answers. It pays to work closely with your component manufacturer when your humanoid design objectives include:

• Motion control. Any joint that needs to pivot, turn, rotate or oscillate will require motion components. But to mimic human movements, various joints and actuators will need to perform in concert. That makes motion control an important element to the design. As an example, here are some of the issues involved in achieving high precision and smooth rotation in a traditional robotic joint:

  Although two thin section bearings can do the job, they will consume a large amount of space and come with a high cost. IKO crossed roller bearings (CRBs) can eliminate the two bearing system because they integrate two bearings into one platform via rollers arranged in an X pattern. This allows them to handle large axial, radial and moment loads simultaneously to perform complex tasks while saving space. IKO can also do customizations such as adding flanges or different bolt patterns to simplify installation.

• Fit the existing work environment. To get a humanoid to perform in a distinct work environment, advanced motion control strategies are often necessary. For example, a robot must handle an object at a shelf height or depth that a person may not be able to reach. The right motion component manufacturer can add linear extending mechanisms to arms or legs, or modify a torso to create a physical structure that can overcome a humanoid’s physical limitations and adapt to an existing work environment.
• Minimize maintenance requirements. Reducing and predicting maintenance needs are important aspects when designing motion systems that will be expected to consistently perform tens of thousands of times without degradation. While some components with integrated sensors can, for example, alert operators to mechanical damage, IKO strives to manufacture products that are maintenance-free over the life of the application.

IKO Can Show You What’s Possible
When it comes to improving motion systems in humanoids, engineers should look beyond previous successes and keep abreast of the latest components along with their features, capabilities, benefits and customization possibilities. That also means seeking solutions early in the design process, considering options and tailoring the best one to the robot’s requirements. At IKO, we offer a wide lineup of linear roller guides, crossed roller bearings, spherical bushings and cam followers that are well-suited for delivering smooth, accurate motion in robotic applications. We’ll propose achievable yet practical solutions and modifications, as well as test and validate them to prove their efficacy in the field. When you partner with IKO, you’ll enhance your humanoid’s performance to match its functional requirements and workspace.

For more information, please visit our industry page.