Dynamic Valve Flow Restriction for Impulse Force Positioning
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Solution Overview
Problem
Conventional position control systems are vulnerable to impulse forces, leading to significant deviations in component positioning, which can compromise system operation, efficiency, and safety, and are often costly to mitigate effectively.
Innovation Solution
The implementation of dynamic valves within position control apparatuses to restrict fluid flow and oppose impulse forces, providing rigidity and reducing motion-induced displacement through the use of orifice or ball-type dynamic valves that limit flow to a constant rate or completely block it, thereby generating an opposition force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional position control systems are used without flow restriction, then the system is simpler and less expensive, but the system is vulnerable to impulse forces causing significant positioning deviations
Solution Approach 1:
The patent applies pneumatic principles by using a flow-restricted positioner that controls fluid flow to a actuator. The flow restriction creates backpressure that resists impulse forces, maintaining positioning accuracy without requiring complex mechanical reinforcement. The system uses pneumatic pressure and flow dynamics to achieve rigidity against external disturbances.
Solution Approach 2:
The patent changes the flow parameter by introducing a flow restriction element that limits the rate of fluid flow into and out of the actuator. This parameter change creates a damping effect where the restricted flow generates opposition force during impulse events, improving positioning reliability without increasing overall system complexity.
2Reliability
If internal pressure is increased to provide rigidity against impulse forces, then positioning stability improves, but system cost and required actuator size increase
Solution Approach 1:
Instead of increasing internal pressure to achieve rigidity, the patent changes the flow parameter by restricting flow rate. This creates a dynamic opposition force during impulse events without requiring continuously high pressure, reducing the size and cost of actuators and system components while maintaining positioning stability.
Solution Approach 2:
The patent introduces dynamic flow restriction that adapts to loading conditions. During normal operation, flow is restricted to create opposition force, but the system dynamically responds to impulse forces without requiring oversized components. This dynamic approach allows smaller, less expensive actuators compared to static high-pressure systems.
3Force
If flow is restricted through dynamic valves, then opposition force against impulse increases, but fluid flow control complexity increases
Solution Approach 1:
The patent uses simple flow restriction elements within the pneumatic system that automatically generate opposition force through fluid dynamics. The flow restriction creates backpressure that opposes impulse forces without requiring complex valve control mechanisms, maintaining force generation while minimizing control complexity.
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 significantly reduces the impact of impulse forces on positioned components, minimizing displacement and maintaining desired positions while offering cost savings by reducing the need for higher internal pressures and larger actuators, thus enhancing system reliability and efficiency.
Implementation Method 1
establishing a dynamic valve so as to produce an opposition force that opposes impulse force induced motion of the at least one component capable of receiving an impulse force
Implementation Method 2
The dynamic valve limits flow to a substantially constant rate at and beyond a certain flow threshold... This approach significantly reduces the impact of impulse forces on positioned components
Data Source
AI summary
Particular embodiments of the inventive technology disclosed herein relate to the use of a dynamic valve to reduce motion caused by impulse force applied to a positioned component. Typically, the inventive technology finds application in an internally pressurized positioning system. At times, use of the inventive technology may lead to cost savings by, e.g., allowing for the use of smaller diameter positioner actuators and/or a reduced internal pressure.