Long-Stator Linear Motor Start-Up With Pre-Run Thermal Checks
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Solution Overview
Problem
The start-up of long-stator linear motors is complicated due to the lack of determinism in movement profiles, leading to potential thermal, mechanical, and electrical design issues that can only be identified after operation begins, causing inefficiencies and potential failures.
Innovation Solution
A method to check and adjust the thermal, mechanical, and electrical configurations of the transport device before start-up by simulating the movements of transport units and determining the required electrical control variables, allowing for identification and rectification of potential issues before operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the transport device operates with multiple transport units simultaneously, then productivity increases, but thermal and electrical design issues arise that are difficult to detect before operation
Solution Approach 1:
The patent applies preliminary action by performing a pre-startup check that simulates the entire operational process before actual operation begins. The method calculates movement profiles for all transport units, determines electrical control variables for drive coils, and checks thermal and electrical designs in advance to identify potential issues before they occur during actual operation, thereby ensuring reliable productivity.
Solution Approach 2:
The patent implements feedback by using an iterative process where the pre-startup check results feed back into adjusting the transport device configuration. If thermal or electrical design issues are detected during the simulation, the configuration is modified and the check is repeated until no issues are found, ensuring that the final configuration is reliable before actual operation begins.
2Ease of operation
If the start-up process is simplified, then ease of operation improves, but potential design issues remain undetected
Solution Approach 1:
The patent applies self-service by enabling the transport device to perform its own design validation through automated simulation and checking processes. The system automatically calculates movement profiles, determines electrical control variables, checks thermal and electrical designs, and generates reports without requiring manual intervention, making the complex detection process as simple as executing the pre-startup check.
3Device complexity
If movement profiles are determined without simulation, then device complexity is reduced, but operational reliability decreases
Solution Approach 1:
The patent replaces manual or simplified mechanical determination methods with a computer-based simulation system. The simulation unit automatically calculates movement profiles and electrical control variables using software, substituting complex manual calculations and physical testing with computational models that provide more accurate and reliable results while being easier to execute.
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 approach ensures a reliable and efficient start-up by identifying and addressing potential problems beforehand, reducing the likelihood of operational issues and improving the overall performance of the transport device.
Implementation Method 1
By energizing the drive coils by applying a coil voltage, heat is also generated in the stator modules, as a result of which the temperature of a stator module can rise.
Implementation Method 2
If the drive coils are energized in the region of a rotor, an electromagnetic drive magnetic field is generated which interacts with the excitation field of the drive magnets to generate a driving force on the rotor.
Implementation Method 3
The coolant thus absorbs heat from the stator and dissipates it.
Data Source
AI summary
In order to simplify the starting-up of a transport device in the form of a long-stator linear motor, a thermal design and/or an electrical design and/or a mechanical design of the transport device is checked using a time course of the electrical control variable of the drive coils for producing a product flow, and, before starting-up, a transport device configuration having a thermal and/or electrical and/or mechanical configuration is changed if the product flow cannot be implemented due to the thermal design and/or electrical design and/or mechanical design.