Jacquard Control System Intermediate Controller Wiring
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Solution Overview
Problem
The existing control systems for Jacquard mechanisms in weaving machines face errors in signal transmission due to the large number of connections required to control electromagnets, which can lead to flaws in the fabric and are prone to data transmission failures or component failures.
Innovation Solution
A control system with a primary controller, secondary controllers, and intermediate controllers, where the intermediate controllers are directly connected to both secondary controllers and electromagnet control units, reducing the number of connecting wires and allowing permanent connections via electronic components or tracks on a board, with fault detection capabilities to localize issues accurately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a large number of connections are used to control electromagnets in the Jacquard mechanism, then the control coverage is improved, but the risk of signal transmission errors increases
Solution Approach 1:
The control system is divided into multiple independent control units, each managing a specific group of electromagnets. This segmentation reduces the complexity of individual connection paths while maintaining comprehensive control coverage across all electromagnets in the Jacquard mechanism.
Solution Approach 2:
An intermediary control unit is introduced between the main controller and the electromagnet control units. This intermediary receives control signals and distributes them to the appropriate control units, reducing the number of direct connections required while ensuring reliable signal transmission through a centralized coordination point.
2Ease of repair
If removable connections are used to allow maintenance operations, then the ease of repair is improved, but the risk of connection errors increases
Solution Approach 1:
The problematic removable connections are extracted from the system by implementing permanent connections between control units. Maintenance is facilitated not by removing connections, but by designing modular control units that can be independently replaced, thus maintaining connection reliability while preserving ease of repair.
3Reliability
If permanent connections are implemented via electronic components or tracks, then the signal transmission reliability is improved, but the device complexity increases
Solution Approach 1:
Multiple control functions are merged into integrated electronic control units that combine signal processing, distribution, and electromagnet control in single modules. This merging reduces the overall number of separate components and connections, thereby reducing complexity while maintaining permanent reliable connections through electronic circuits.
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
This configuration reduces the risk of signal transmission errors, allows precise fault localization, and avoids unnecessary disassembly by attributing faults to transmission or connection problems rather than module failures, enhancing the reliability of the control system.
Implementation Method 1
electromagnet control units each associated with at least one electromechanical selection device, each control unit being electrically connected to a secondary controller and comprising a shift register for receiving activation states of the electromagnets that it controls
Data Source
AI summary
This control system (100) for at least one Jacquard mechanism (4) for forming shed has electromechanical selection devices (20) including magnets, a primary controller (70) intended to communicate with a weaving machine (2) and including at least one memory (76) to store weave pattern data and at least one computer (74). This system also includes at least two secondary controllers (40A, 40B), each electrically connected to the primary controller (70) and each able to control a group of electromechanical selection devices (20), each secondary controller having at least one memory (46A, 46B) for storing weave pattern data, at least one computer (44A, 44B), and control units (30) for the electromagnets belonging to the electromechanical selection devices (20). This system further includes at least one intermediate controller (50) in direct electrical connection, with one of the secondary controllers (40A, 40B) and with at least two electromagnet control units (30).