Dynamic Suction Cup Control for Robotic Grippers
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Solution Overview
Problem
Robotic systems with suction grippers face challenges in efficiently gripping and moving objects of varying sizes and shapes, as existing technologies lack effective methods to dynamically adjust suction force distribution across multiple suction cups based on real-time pressure data.
Innovation Solution
A suction gripper system equipped with multiple suction cups and sensors that measure vacuum pressure, allowing a control system to activate and deactivate suction cups dynamically to optimize the gripping force by identifying and deactivating cups with lower pressures, thereby maximizing the overall suction force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple suction cups are activated to grip objects of varying sizes and shapes, then the gripping coverage and adaptability are improved, but the suction force distribution becomes uneven and efficiency decreases
Solution Approach 1:
The system dynamically adjusts the activation state of each suction cup based on real-time pressure sensor feedback. The control system continuously monitors vacuum pressure levels and reactively deactivates suction cups that are not effectively gripping the object, optimizing suction force distribution adaptively during the gripping process.
Solution Approach 2:
Pressure sensors provide real-time feedback on the vacuum pressure at each suction cup location. This feedback loop enables the control system to identify underperforming suction cups and deactivate them, ensuring that suction force is concentrated on cups that are effectively contacting the object, thereby improving overall suction efficiency.
2Force
If all suction cups remain active during gripping, then the system maintains maximum suction force, but energy is wasted on cups that are not effectively gripping the object
Solution Approach 1:
The pressure sensors continuously monitor vacuum pressure levels at each suction cup, providing feedback that enables the control system to distinguish between cups that are effectively gripping the object and those that are not. This feedback mechanism allows for selective deactivation of non-performing cups, eliminating energy waste while maintaining effective suction force.
Solution Approach 2:
The system changes the operational parameter (activation state) of individual suction cups based on real-time pressure measurements. By transitioning suction cups from an active to inactive state when they are not effectively gripping, the system optimizes energy consumption while preserving necessary suction force for stable object handling.
3Ease of operation
If suction force is distributed evenly across all suction cups, then the system simplifies control, but it cannot adapt to objects of different sizes and shapes
Solution Approach 1:
The system transitions from a static, uniform suction force distribution to a dynamic, adaptive distribution pattern. The control system automatically adjusts which suction cups are active based on real-time pressure feedback, enabling adaptation to various object geometries without requiring complex manual reconfiguration or pre-programming for each object type.
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 enhances the robotic system's ability to grip and move objects of different types and sizes by optimizing suction force distribution, improving stability and efficiency in handling heterogeneous objects.
Implementation Method 1
A vacuum pump may be controlled to apply suction to an object through one or more active suction cups of the suction gripper
Implementation Method 2
Digital or analog sensors corresponding to the suction cups may then be used to measure the vacuum pressures of one or more of the active suction cups
Data Source
AI summary
Example embodiments may provide for control of a suction gripper with multiple suction cups. One example system includes a suction gripper and a control system. The suction gripper may include a vacuum pump, a plurality of suction cups coupled to the vacuum pump, and a plurality of sensors corresponding to the suction cups, where a sensor is positioned between the vacuum pump and a suction cup and measures a vacuum pressure of the suction cup. The control system may be configured to activate the vacuum pump to cause the suction gripper to apply suction to an object through one or more active suction cups, receive sensor data indicative of the vacuum pressure of the one or more active suction cups from the corresponding sensors, identify at least one suction cup to deactivate from the one or more active suction cups, and deactivate the at least one identified suction cup.