Magnetic Circuit Conveyance Layout for Inductance Stability

Solution Overview

Problem

Conventional specimen analysis systems face issues with unstable conveyance due to variations in thrust and position estimation accuracy caused by differences in inductance characteristics at the connections between sub-planes with varying densities of electromagnetic actuators, leading to potential conveyance disruptions and damage.

Innovation Solution

A conveying device with magnetic circuit sections connected such that areas with higher and lower densities of electromagnetic actuators alternate, stabilizing thrust and position estimation by minimizing inductance variations, using a grid pattern of teeth and winding wires with magnetic materials.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If sub-planes with varying densities of electromagnetic actuators are connected, then mass simultaneous conveyance and multiple-direction conveyance are enabled, but inductance characteristics vary at connected regions causing unstable conveyance and poor position estimation

Engineering Contradiction:

Improvemass simultaneous conveyanceVSAvoidconveyance stability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The conveyance plane is divided into multiple sub-planes, each with a uniform grid pattern of electromagnetic actuators. This segmentation allows each sub-plane to maintain consistent inductance characteristics while the overall system achieves mass simultaneous conveyance capability across multiple sub-planes.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Each sub-plane is designed with uniform actuator density and grid pattern, ensuring that local inductance characteristics are consistent within each sub-plane. This local uniformity prevents the inductance variations that would occur if sub-planes with different densities were connected.

Inventive Principle:

Principle #3Local quality

2Productivity

If sub-planes with varying densities of electromagnetic actuators are connected, then conveyance capacity is increased, but position estimation accuracy degrades due to inductance variation

Engineering Contradiction:

Improveconveyance capacityVSAvoidposition estimation accuracy

Core Design Contradiction:

ProductivityVSMeasurement precision

Solution Approach 1:

The conveyance plane is divided into multiple sub-planes, each with a uniform grid pattern of electromagnetic actuators. This segmentation allows each sub-plane to maintain consistent inductance characteristics while the overall system achieves mass simultaneous conveyance capability across multiple sub-planes.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Each sub-plane is designed with uniform actuator density and grid pattern, ensuring that local inductance characteristics are consistent within each sub-plane. This local uniformity prevents the inductance variations that would occur if sub-planes with different densities were connected.

Inventive Principle:

Principle #33Homogeneity

3Device complexity

If electromagnetic actuators are arranged in a grid pattern on a single plane, then conveyance control is simplified, but the conveyance plane area is limited

Engineering Contradiction:

Improvecontrol simplicityVSAvoidconveyance plane area

Core Design Contradiction:

Device complexityVSArea of stationary object

Solution Approach 1:

The conveyance plane is divided into multiple sub-planes, each with a uniform grid pattern of electromagnetic actuators. This segmentation allows each sub-plane to maintain consistent inductance characteristics while the overall system achieves mass simultaneous conveyance capability across multiple sub-planes.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Multiple sub-planes with uniform grid patterns are connected together to form a larger conveyance system. By merging these standardized sub-planes, the system achieves both large area coverage and simplified control through consistent grid patterns across all sub-planes.

Inventive Principle:

Principle #5Merging (Combining)

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

Stable conveyance is achieved with reduced sway and damage, ensuring accurate positioning and efficient transfer of specimens by alternating electromagnetic actuator densities, enhancing system performance.

Implementation Method 1

a technique to convey a conveyed object by using magnetic force

Methodology Applied

Scientific EffectMagnetic force: Magnetism

Implementation Method 2

A plurality of electromagnetic actuators is disposed below the conveyance plane, and by the electromagnetic actuators being driven by a control device, the container carriers are conveyed

Methodology Applied

Scientific EffectElectromagnetic actuation: Electromagnet

Data Source

PatentUS20250224415A1Conveying Device, Specimen Analysis System Provided With Conveying Device, and Specimen Pretreatment Device Provided With Conveying Device

Publication Date: 2025.07.10 HITACHI HIGH TECH CORP

AI summary

Inductance characteristics of a connected region between magnetic circuit sections is improved. A conveying device 1includes a plurality of electromagnetic actuators disposed along a side X1, a plurality of electromagnetic actuators disposed along a side X2 opposed to the side X1, a plurality of electromagnetic actuators disposed along a side Y1, and a plurality of electromagnetic actuators disposed along a side Y2opposed to the side Y1. The number of the electromagnetic actuators disposed along the side X1 is larger than the number of the electromagnetic actuators disposed along the side X2.The number of the electromagnetic actuators disposed along the side Y1 is larger than the number of the electromagnetic actuators disposed along the side Y2. A plurality of magnetic circuit sections 2 are connected one another such that the side X1 or Y1 having the larger number of the electromagnetic actuators is adjacent to the side X2 or Y2 having the smaller number of the electromagnetic actuators.