Planar Rotor Coupling Control for Multi-DOF Object Motion
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Solution Overview
Problem
Planar drive systems with existing technologies are limited in providing sufficient degrees of freedom for object movement, as they can only move linearly, tilt, and rotate, but not perform more complex movements required in certain applications.
Innovation Solution
A planar drive system comprising a stator assembly with coil groups generating a magnetic field, a rotor with magnet units, and a coupling device between two rotors, controlled by a controller that outputs signals to coordinate or decouple their movements, allowing for increased freedom of movement by establishing and releasing connections between the rotors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single rotor is used in the planar drive system, then the system structure is simple, but the degrees of freedom for object movement are insufficient
Solution Approach 1:
The patent combines multiple rotors (first rotor and second rotor) into a single planar drive system, allowing them to work together to provide enhanced degrees of freedom for object movement. The rotors can be coupled through a coupling device to enable coordinated movements that increase system versatility while managing structural complexity through modular design.
2Adaptability or versatility
If multiple rotors are used to increase degrees of freedom, then the movement capabilities are enhanced, but the control complexity increases
Solution Approach 1:
The patent introduces a coupling device as an intermediary between multiple rotors, which facilitates coordinated movement while simplifying control. The coupling device enables the rotors to move in a coordinated manner, reducing the control complexity that would otherwise arise from managing multiple independent rotors.
3Force
If rotors are coupled together, then the load-bearing capacity increases, but the system becomes less flexible in individual rotor operation
Solution Approach 1:
The patent implements a dynamic coupling system where the coupling device can establish and release connections between rotors based on operational requirements. This dynamic configuration allows the system to adapt between coupled operation (for increased load-bearing capacity) and independent operation (for flexibility), resolving the contradiction between force capability and operational versatility.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables coordinated movement of objects on the rotors, providing degrees of freedom that would not be possible with individual rotors alone, enhancing the system's capability to handle complex movements and increased load-bearing capacity.
Implementation Method 1
at least one stator assembly (3) having in each case a plurality of coil groups (4) for generating a stator magnetic field
Implementation Method 2
a first rotor (101) and a second rotor (102), wherein the first rotor (101) and the second rotor (102) each comprise a plurality of magnet units (105) for generating a rotor magnetic field
Implementation Method 3
the first rotor (101) and the second rotor (102) may be moved above the stator surface at least in a first direction (21) and a second direction (22) with the aid of an interaction of the stator magnetic field with the rotor magnetic field
Data Source
AI summary
A planar drive system has at least one stator assembly with a plurality of coil groups for generating a stator magnetic field, a stator surface above the stator assembly, and first and second rotors. The rotors each have a plurality of magnet units for generating a rotor magnetic field. The rotors can be moved above the stator surface in first and second directions, with the aid of an interaction of the stator magnetic field with the rotor magnetic field. A connection can be formed between the rotors with the aid of a coupling device. A controller is arranged to output control signals to the stator assembly. The stator assembly is configured to energize the coil groups on the basis of the control signals so that movements of the rotors, coordinated with one another with respect to the coupling device, are carried out with the aid of the stator magnetic field.