Temperature-Controlled Switch Actuator Using Shape Memory Alloy
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Solution Overview
Problem
Existing actuation systems for electrical switches in AC power systems are complex, costly, and require multiple components, making them difficult to maintain and inefficient compared to legacy systems.
Innovation Solution
A temperature-controlled actuation system using a shape memory alloy with a temperature-controllable spatial extent, coupled with a driving assembly that changes the state of the switch by adjusting the actuation material's temperature, eliminating the need for additional components like crank-rocker mechanisms and gear motors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a temperature-controlled actuation material is used, then the device complexity is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The patent replaces complex mechanical actuation systems (crank-rocker mechanisms, gear motors) with a temperature-controlled actuation material that directly changes spatial extent in response to temperature changes. This substitution of mechanical systems with a thermally-responsive material reduces overall device complexity while introducing requirements for precise temperature control to achieve the desired actuation效果
Solution Approach 2:
The actuation material changes its spatial extent by changing its temperature parameter. The control system adjusts the temperature of the actuation material to control its spatial extent, thereby actuating the switch. This parameter change approach simplifies the actuation system structure but requires precise temperature control to ensure reliable switching operation
2Volume of moving object
If the actuation material spatial extent is controlled by temperature adjustment, then the device size is reduced, but the energy consumption increases
Solution Approach 1:
The actuation material exhibits phase transition behavior where it changes its spatial extent in response to temperature changes. By controlling the temperature through phase transitions, the system achieves compact actuation with reduced volume while the energy consumption is managed through controlled heating/cooling cycles that exploit the material's phase transition properties
Solution Approach 2:
The actuation material changes its spatial extent through thermal expansion or contraction when its temperature is adjusted. This thermal response mechanism enables a compact actuator design with reduced volume, while the energy consumption is optimized by utilizing the material's inherent thermal expansion properties rather than requiring continuous mechanical power input
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
The system is smaller, less complex, easier to maintain, and more cost-effective, with fewer components, while providing efficient switching operations by leveraging the thermal expansion properties of the actuation material to transition the switch between ON and OFF states.
Implementation Method 1
The actuation material may be a shape memory alloy
Implementation Method 2
an actuation material that has a temperature-controllable spatial extent
Data Source
AI summary
A switching system includes: a switch including an ON state and an OFF state; and an actuator. The actuator includes: an actuation system including an actuation material that has a temperature-controllable spatial extent; a control system configured to adjust the temperature of the actuation material to control the spatial extent of the actuation material; and a driving assembly coupled to the actuation system. The driving assembly moves in response to a change in the spatial extent of the actuation material to thereby change the state of the switch.