Linear Electromagnetic Propulsion System with Variable Magnetic Control

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Solution Overview

Problem

Existing linear propulsion systems require rotational motors for conversion to linear motion, impact-based mechanisms for motion transfer, or fixed magnetic force, limiting variability and efficiency in force and speed control.

Innovation Solution

A propulsion system utilizing a series of electromagnets or superconducting magnets arranged in a linear configuration, where the magnetic field intensity of each pair can be controlled independently to provide variable force and speed through remote-controlled pulse signals, allowing simultaneous or sequential energization for optimized motion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If rotational motors are used for propulsion, then motion can be generated, but the system complexity increases due to requiring transmission components for conversion to linear motion

Engineering Contradiction:
Improvelinear motion generationVSAvoidtransmission components
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent replaces rotational mechanical motors with a linear electromagnetic propulsion system that directly generates linear motion through alternating magnetic fields. The electromagnets arranged in linear sequence create alternating attraction and repulsion forces that propel the vehicle forward without requiring rotational-to-linear conversion mechanisms, thereby eliminating complex transmission components.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Force

If impact-based mechanisms are used for motion transfer, then motion can be imparted to the vehicle, but the motion becomes non-linear and control precision decreases

Engineering Contradiction:
Improvemotion transferVSAvoidmotion linearity
Core Design Contradiction:
ForceVSManufacturing precision

Solution Approach 1:

The patent employs periodic activation of electromagnets in an alternating sequence, where each electromagnet is energized and de-energized in a rhythmic pattern. This periodic action creates smooth, continuous linear motion through controlled attraction and repulsion cycles, eliminating the impact-based non-linear motion and achieving precise linear propulsion.

Inventive Principle:
Principle #19Periodic action

3Device complexity

If fixed magnetic force is used in propulsion, then the system structure is simple, but the ability to vary force and speed is limited

Engineering Contradiction:
Improvesystem structureVSAvoidforce and speed control
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent implements dynamic control of magnetic force by independently varying the current supplied to each electromagnet through electronic control circuits. The system can adjust the strength and duration of magnetic fields in real-time, enabling continuous variation of propulsion force and speed while maintaining a relatively simple physical structure of electromagnets and control electronics.

Inventive Principle:
Principle #15Dynamics

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 efficient, variable, and remote-controlled linear motion without rotational motors or impact, allowing for smoother acceleration and deceleration by adjusting magnetic field strength and frequency, enhancing power-to-weight ratio and propulsion force distribution.

Implementation Method 1

a plurality of strong and weak electromagnets that repel each other to move the craft or load

Methodology Applied
Scientific EffectElectromagnetic repulsion: Electromagnet

Implementation Method 2

The electromagnets are arranged in a linear orientation where the electromagnets can work in harmony to provide a more linear motion in a single motor package

Methodology Applied
Scientific EffectMagnetic field interaction: Magnetic Field

Data Source

PatentUS7936097B2Electromagnetic propulsion system
Publication Date: 2011.05.03 ESSEX JAMES O
  • US7936097B2 patent drawing
  • US7936097B2 patent drawing
  • US7936097B2 patent drawing

AI summary

An electromechanical propulsion system is disclosed. The propulsion system uses magnetic propulsion and magnetic bearings to move a vehicle. The propulsion system is well suited for use on land, air, space, above water and underwater vehicles. The propulsion system includes a plurality of electromagnets that repel each other with strong and weak magnets to move the propulsion motor in linear motion. Multiple side propulsion motors can be incorporated to alter the direction of travel of the electromechanical propulsion system. The propulsion system is manufacturable in a self contained configuration where it is controllable from a remote location.