Movement device for mobile platforms

Mobile platform movement device with variable turning radius via multi-joint frame rotation control

This technology is a mobile platform movement device that variably adjusts the turning radius during steering by controlling the relative rotation between frames of multiple moving parts and the multi-axis rotation of vertical and horizontal frames in a structure where multiple moving parts are connected by a connecting shaft.

Conventional Ackermann or skid steering methods are limited by fixed turning angles or suffer from efficiency issues such as steering instability and power loss when controlling individual motors for each wheel.

This technology implements a multi-joint frame structure with a first drive unit centered on the connecting shaft, a second drive unit that induces relative rotation of the rotating frame, and a third drive unit that rotates the horizontal frame, allowing the control unit to calculate and manage the turning radius. It can be applied to logistics robots and indoor/outdoor service robots, enabling flexible and stable steering even in confined spaces.

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Key Features:

• A first moving part capable of moving along the ground and a second moving part positioned to the rear in a first direction
• A connecting shaft that links the first and second moving parts, and a first drive unit that rotates them around said shaft
• A rotating frame coupled to the body frame to allow relative rotation about a second direction axis
• Configuration of vertical and horizontal frames designed to be rotatable about both the first and second directions