Self-assembling shape-morphing robotic platform

Patent metadata

Field	Value
Publication number	US-2024208044-A1
Application number	US-202318392132-A
Country	US
Kind code	A1
Filing date	Dec 21, 2023
Priority date	Dec 21, 2022
Publication date	Jun 27, 2024
Grant date	—

Abstract

A robotic system includes a first robotic unit, where the first robotic unit includes a wheel and an actuator that is mounted to the wheel. The actuator is configured to rotate an active rotor that is mounted within the wheel. The first robotic unit also includes an actuated magnet that is mounted to the active rotor such that the actuator controls rotation of the actuated magnet within the wheel. The first robotic unit also includes a free magnet mounted to a passive rotor that rotates within the wheel. Movement of the actuated magnet by the actuator causes rotation of the wheel, and wherein the free magnet is configured to attach to a second actuated magnet of a second robotic unit to facilitate movement of the first robotic unit, and allow for continuous, material-like, deformation in a multi-units aggregate.

First claim

What is claimed is:

1 . A robotic system comprising:
a first robotic unit, wherein the first robotic unit includes:
a wheel;
an actuator that is mounted to the wheel, wherein the actuator is configured to rotate an active rotor that is mounted within the wheel;
an actuated magnet that is mounted to the active rotor such that the actuator controls rotation of the actuated magnet within the wheel; and
a free magnet mounted to a passive rotor that rotates within the wheel;
wherein movement of the actuated magnet by the actuator causes rotation of the wheel, and wherein the free magnet is configured to attach to a second actuated magnet of a second robotic unit to facilitate movement of the first robotic unit.

2 . The system of claim 1 , wherein the first robotic unit also includes a sensor, and wherein the sensor measures an amount of rotation of the actuator.

3 . The system of claim 1 , wherein the first robotic unit also includes a computing system that includes a transceiver, wherein the transceiver receives information regarding the second robotic unit and a third robotic unit.

4 . The system of claim 3 , wherein the information received by the transceiver comprises an indication that the third robotic unit is attached to the actuated magnet of the first robotic unit.

5 . The system of claim 4 , wherein the transceiver transmits a motor angle value to the third robotic unit for propagation to a fourth robotic unit such that all robotic units in an assembly receive the motor angle value.

6 . The system of claim 1 , wherein the first robotic unit also includes a computing system that includes a transceiver, wherein the transceiver receives a motor angle value of the second robotic unit.

7 . The system of claim 6 , wherein the computing system includes a processor, and wherein the processor is configured to determine an amount of rotation of the motor to achieve a desired movement, wherein the amount of rotation of the motor is determined based on the motor angle value received from the second robotic unit.

8 . The system of claim 1 , wherein the first robotic unit also includes a computing system that includes a processor, wherein the first robotic unit is temporarily a leader unit, and wherein the processor uses a timer to control a duration during which the motor of the leader unit rotates.

9 . The system of claim 8 , wherein, upon expiration of the timer, the processor sends a message to the second robotic unit that indicates the second robotic unit is temporarily the leader unit for a subsequent movement.

10 . The system of claim 1 , wherein the actuator comprises a motor, and wherein a polarity of voltage applied to the motor controls a direction of rotation of the motor.

11 . The system of claim 10 , wherein adjacent robotic units are assigned opposite voltage polarities such that the adjacent robotic units rotate in opposite directions.

12 . The system of claim 1 , wherein the first robotic unit is part of a sequence of robotic units that also includes the second robotic unit, and wherein each robotic unit in the sequence is provided with its relative position in the sequence.

13 . The system of claim 1 , wherein the first robotic unit is assigned a compliance state, wherein the compliance state indicates whether an assembly that includes the first robotic unit is rigid or soft, wherein the first robotic unit is one of a plurality of robotic units that perform continuous deformation in a multi-units aggregate in accordance with the assigned compliance state.

14 . A method of forming a robotic unit, the method comprising:
forming a wheel; mounting an actuator to the wheel; mounting an active rotor to the actuator, wherein the actuator is configured to rotate the active rotor; mounting an actuated magnet to the active rotor such that the actuator controls rotation of the actuated magnet within the wheel to cause rotation of the wheel; and mounting a free magnet to a passive rotor that rotates within the wheel, wherein the free magnet is configured to attach to a second actuated magnet of a second robotic unit to facilitate movement of the first robotic unit.

15 . The method of claim 14 , further comprising mounting a sensor to the actuator, wherein the sensor measures an amount of rotation of the motor.

16 . The method of claim 14 , further comprising mounting a printed circuit board that houses a computing system within the wheel, wherein the computing system includes a processor configured to control a polarity of a voltage applied to the actuator, wherein the polarity of the voltage controls a direction of rotation of the actuator.

17 . The method of claim 16 , wherein the computing system also includes a transceiver configured to receive an instruction regarding which polarity of the voltage to apply to the motor, and wherein adjacent robotic units use voltages of opposite polarity such that the adjacent robotic units rotate in opposite directions.

18 . The method of claim 16 , further comprising mounting a printed circuit board that houses a computing system within the wheel, wherein the computing system includes a processor configured to receive an indication that the robotic unit is a leader unit.

19 . The method of claim 18 , wherein the processor uses a timer to control a duration during which the motor of the leader unit rotates.

20 . The system of claim 19 , wherein, upon expiration of the timer, the processor sends a message to the second robotic unit that indicates the second robotic unit is the leader unit for a subsequent movement.

Assignees

• Univ Chicago
• Illinois Institute Of Tech

Inventors

• Saintyves Baudouin
• Jaeger Heinrich M
• Spenko Matthew J

Classifications

• A63H33/046

  comprising magnetic interaction means, e.g. holding together by magnetic attraction · CPC title

• B25J9/065 Primary

  Snake robots · CPC title

• B25J9/08 Primary

  characterised by modular constructions · CPC title

• B25J9/126 Primary

  Rotary actuators · CPC title