Robotic Arm Brake Release for Safe Manual Repositioning
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Solution Overview
Problem
Existing robotic systems lack adequate safety features to protect humans and objects in close proximity, particularly during power loss or malfunction, and existing safety measures can cause harm or trap individuals.
Innovation Solution
Implementing a robotic system with removable or disabled brakes, solenoids, and override mechanisms to allow manual movement or repositioning of the robot arm, enabling safe shutdown and preventing harm during power loss or malfunction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If brakes are enabled to restrict robotic arm movement for safety, then operator safety is improved, but the ability to manually reposition the arm during power loss deteriorates
Solution Approach 1:
The brake system transitions from a static locked state during normal operation to a dynamic controllable state during power loss. The controller dynamically adjusts brake engagement based on power availability, enabling manual repositioning when needed while maintaining safety during operation. This resolves the contradiction by making the safety mechanism adaptive rather than fixed.
Solution Approach 2:
The system uses its own power loss condition to automatically enable manual operation mode. When power is lost, the controller detects this state and automatically disengages the brakes, allowing the operator to manually reposition the arm without requiring additional safety switches or manual override mechanisms. The system serves its own safety needs through autonomous state detection and response.
2Speed
If solenoids are used to control base plate movement for automated safety shutdown, then shutdown speed is improved, but the ability to manually intervene deteriorates
Solution Approach 1:
The solenoid engagement is dynamically controlled based on system state. During normal operation, solenoids are engaged for automated safety shutdown. During power loss, the controller dynamically disengages solenoid control, allowing manual intervention. This creates a flexible system that adapts its control mode based on operational conditions rather than being fixed in one mode.
Solution Approach 2:
The system prepares for manual intervention by maintaining the capability to disengage solenoids before power loss occurs. The controller is pre-programmed to detect power loss conditions and automatically transition to manual mode, ensuring that manual intervention capability is ready when needed rather than requiring physical manipulation of locked mechanisms during emergency situations.
3Reliability
If robotic arm is locked in place during power loss to prevent uncontrolled movement, then safety is improved, but the ability to manually reposition the arm deteriorates
Solution Approach 1:
Instead of locking the robotic arm during power loss as conventional systems do, this system inverts the approach by enabling manual operation mode. The controller detects power loss and automatically disengages brakes and solenoids, allowing the operator to manually reposition the arm. This inverted logic prioritizes manual control during emergencies rather than automated locking, resolving the contradiction between safety and operability.
Solution Approach 2:
The system autonomously detects power loss conditions and self-adjusts its control mode to enable manual operation. No external intervention or manual switching is required - the system automatically transitions from automated control with locked brakes to manual operation mode when power is lost, ensuring both safety and repositioning capability are maintained through autonomous adaptation.
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
Ensures safe operation by allowing manual movement of the robot arm away from individuals or objects, preventing trapping and damage, and providing controlled shutdown mechanisms.
Implementation Method 1
The robotic base assembly includes a solenoid
Data Source
AI summary
A robotic system includes a robotic arm that interacts with an object during operation. It further includes a locking component that, during operation, locks a multi-position component in an operating position. Responsive to a triggering event, locking of the multi-position component in the operating position is released and the multi-position component moves away from its operating position, facilitating separation between the robotic arm and the object.