NMR Probe Head Remote Tuning With a Shared Actuator Mechanism
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Solution Overview
Problem
Current NMR probe heads require multiple actuators for each component adjustment, leading to a bulky and complex design that occupies valuable space and complicates control electronics, especially in Standard Bore probes with limited space.
Innovation Solution
A mechanism using a single main actuator and three actuating elements on a carrier stage to move the actuator platform in XYZ or cylindrical coordinates, allowing for efficient translational and rotational movements, reducing the number of actuators to four and eliminating the need for complicated coupling links.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple actuators are used for each component adjustment, then each component can be adjusted independently, but the device becomes bulky and complex
Solution Approach 1:
A single actuator is designed to perform multiple functions by sequentially adjusting different components (trimmer capacitors, resistors, inductors) through a programmable control system, eliminating the need for separate actuators for each component
Solution Approach 2:
The actuator position is dynamically changed during operation to access different components at different locations within the probe head, allowing one actuator to control multiple adjustment rods through spatial repositioning
2Ease of operation
If multiple actuators are used for each component adjustment, then adjustment control is simplified, but the control electronics become more complex
Solution Approach 1:
A single programmable actuator replaces multiple dedicated actuators, with the control system being reprogrammed to control different components based on user requirements, reducing hardware complexity while maintaining operational flexibility
Solution Approach 2:
The control system changes parameters (actuator position, actuation direction, engagement mechanism) to adapt to different components, allowing one control unit to manage multiple adjustment functions through software rather than hardware
3Ease of operation
If multiple actuators are used in Standard Bore probes, then each component can be adjusted, but valuable space is occupied
Solution Approach 1:
Multiple actuator functions are merged into a single actuator unit, reducing the total volume required in the probe head while maintaining the capability to adjust all necessary components through coordinated movement and engagement mechanisms
Data Source
AI summary
An NMR probe head contains a mechanical apparatus configured to remotely control components of the probe head during operation of an NMR spectrometer. A plurality of adjustment rods are arranged in a Z-direction and mechanically coupled to an actuator via an engagement system, and a control system controls the movement of the actuator. An actuator platform is movably connected to a carrier stage equipped with three actuating elements that enable the carrier stage to move the actuator platform into any desired spatial position relative to the adjustment rods. The engagement system comprises receiving elements on the lower ends of the adjustment rods and an inserting element on the top end of the actuator that is configured to fit in any of the receiving elements to couple the corresponding adjustment rod to the actuator to provide a transmission of rotational and/or translational movement from the actuator to the adjustment rod.