Extendable Mast Control for Torque and Speed Limiting

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Solution Overview

Problem

Existing mobile surveillance systems face issues with potential damage due to excessive torque or speed during mast operation, necessitating a solution that allows simultaneous control of torque and speed to enhance safety and precision.

Innovation Solution

A mobile surveillance system with an extendable mast that adjusts motor speed and torque based on the mast's position and direction of movement, using a logic device to control the extendable mast and motor, ensuring safe deployment and stowing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If the motor operates in speed mode to maintain certain motor speed, then the speed control is improved, but excessive torque may be generated causing damage to the system

Engineering Contradiction:
Improvemotor speedVSAvoidexcessive torque damage
Core Design Contradiction:
SpeedVSObject-affected harmful factors

Solution Approach 1:

The system dynamically changes motor parameters (torque and speed) based on the mast's position and direction of movement. The logic device adjusts motor operating parameters in real-time, transitioning between speed mode and torque mode to prevent harmful effects while maintaining operational efficiency.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The logic device receives feedback about the mast's position and movement direction, then adjusts motor parameters accordingly. This closed-loop control ensures that torque and speed are optimized for each phase of mast operation, preventing damage while maintaining performance.

Inventive Principle:
Principle #23Feedback

2Force

If the motor operates in torque mode to maintain certain torque, then the torque control is improved, but excessive speed may be generated causing damage to the system

Engineering Contradiction:
Improvemotor torqueVSAvoidexcessive speed damage
Core Design Contradiction:
ForceVSObject-affected harmful factors

Solution Approach 1:

The system dynamically changes motor parameters (torque and speed) based on the mast's position and direction of movement. The logic device adjusts motor operating parameters in real-time, transitioning between speed mode and torque mode to prevent harmful effects while maintaining operational efficiency.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The logic device receives feedback about the mast's position and movement direction, then adjusts motor parameters accordingly. This closed-loop control ensures that torque and speed are optimized for each phase of mast operation, preventing damage while maintaining performance.

Inventive Principle:
Principle #23Feedback

3Adaptability or versatility

If the mast is deployed to provide elevated platform for sensors, then the surveillance capability is improved, but the operational complexity and safety risks increase

Engineering Contradiction:
Improvesurveillance capabilityVSAvoidcontrol system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system transitions from static to dynamic control by continuously adjusting motor parameters based on real-time mast position and movement direction. This dynamic approach simplifies the control logic while enhancing safety and performance across different operational phases.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The logic device changes motor operating parameters (speed and torque) based on mast position and movement direction, enabling safe and efficient operation throughout the full range of motion while maintaining simplified control architecture.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS12444832B2Mobile surveillance systems extendable mast control systems and methods
Publication Date: 2025.10.14 TELEDYNE FLIR DEFENSE INC
  • US12444832B2 patent drawing
  • US12444832B2 patent drawing
  • US12444832B2 patent drawing

AI summary

Mobile surveillance systems (MSSs) and related techniques are provided to improve the safety and operational flexibility of unmanned aircraft systems (UASs) and unmanned aerial vehicles (UAVs). An MMS may include an extendable mast, a motor configured to control movement of the extendable mast between a stowed position and a deployed position, and a logic device configured to communicate with and control the extendable mast and the motor. The logic device may be configured to adjust a speed of the motor based on a position of the extendable mast between the stowed position and the deployed position and based on deployment or stowing of the extendable mast. The logic device may be configured to adjust a torque of the motor based on the position of the extendable mast and based on deployment or stowing of the extendable mast.