Linear Motor Assembly With Magnetic Position Feedback
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Solution Overview
Problem
Existing linear motor systems in industrial applications, such as packaging assemblies, face challenges with precise position control of movable members due to mechanical play and wear, leading to potential handling errors and premature degradation, which can result in defective products and sterility issues.
Innovation Solution
A linear motor system with integrated movement detectors, including inertial sensors and magnetometers, monitors the real-time movements of movable members and their parts, allowing for precise position control and early detection of faults or errors, using processing units to calculate and adjust operations based on movement signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If movement detectors and sensors are added to monitor position and vibration, then measurement precision and reliability are improved, but device complexity increases
Solution Approach 1:
The system divides monitoring functions into separate detectors: movement detectors for position tracking and vibration detectors for mechanical health monitoring. This segmentation allows each sensor type to specialize in specific measurements, improving overall measurement precision while enabling modular system design that manages complexity through functional separation.
Solution Approach 2:
The patent implements continuous feedback loops where movement detectors provide real-time position data and vibration detectors provide mechanical health data, both fed to control units that adjust operations accordingly. This feedback mechanism maintains high measurement precision for position control and enables early fault detection, justifying the added system complexity through improved reliability and preventive maintenance capabilities.
2Reliability
If continuous monitoring of movable members is implemented, then reliability is improved, but use of energy increases
Solution Approach 1:
The system implements continuous monitoring through always-active movement detectors and vibration detectors that track position and mechanical health without interruption. This continuous data collection significantly improves reliability by enabling real-time position control and immediate fault detection. The energy consumption increase is justified by the critical need for uninterrupted monitoring in precision packaging applications where errors can compromise product sterility.
Solution Approach 2:
The vibration detectors perform preliminary detection of mechanical issues before they cause failures. By continuously monitoring vibration patterns and comparing them against baseline data, the system identifies early signs of wear, misalignment, or loosening components. This preliminary action prevents catastrophic failures and maintains high reliability, making the continuous energy consumption necessary for preventive maintenance.
3Manufacturing precision
If precise position control is implemented, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical position control mechanisms with sensor-based detection and electronic control. Movement detectors using optical or magnetic fields substitute for mechanical encoders, providing precise position feedback without complex mechanical linkages. This substitution maintains high manufacturing precision for forming and sealing operations while reducing mechanical complexity through non-contact sensing and electronic control systems.
Solution Approach 2:
The system achieves precise position control by continuously measuring and adjusting positional parameters based on movement detector feedback. The control units modify operational parameters in real-time to maintain precise positioning of movable members during forming and sealing cycles. This dynamic parameter adjustment enables high manufacturing precision while using software-based control rather than complex mechanical positioning mechanisms.
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 precise monitoring and control of movable member movements, reducing defective products, detecting mechanical issues early, and ensuring accurate handling and sealing operations, thereby enhancing system reliability and sterility.
Implementation Method 1
the movement detector (22) comprises a magnet (226) positioned at one of the first or second element (20, 21), and a magnetometer (224) positioned at the other of the first or second element (20, 21)
Data Source
AI summary
A linear motor system includes a track and at least one movable member coupled to the track and configured to move along the track. The at least one movable member includes a first element, a second element relatively movable with respect to the first element, and at least one movement detector configured to transmit a movement signal, wherein the movement detector comprises at least one magnet positioned at one of the first or second element, and at least one magnetometer positioned at the other of the first or the second element. The linear motor system also includes a processing unit configured to calculate a movement of the second element with respect to the first element as a function of the movement signal received from the movement detector.