Conveyor Roller Counterforce Control for Precise Object Stopping
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Solution Overview
Problem
Conveyor assemblies face inefficiencies due to unaccounted inertial forces causing objects to undesirably progress along the transportation path, leading to operational inefficiencies, inaccurate tracking, and potential mishandling failures.
Innovation Solution
A conveyor assembly with a first drive roller and a second counter-rotating roller, controlled by a controller, generates a counterforce to stop the conveyor surface and objects at a defined position, using sensors to detect inertial forces and activate the second roller to oppose movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional drive roller is used to transport objects, then the conveyor surface moves in the conveyance direction, but the inertial forces from objects cause inaccurate tracking and objects may move into downstream zones
Solution Approach 1:
The conveyor system is divided into multiple independently controllable conveyor zones, each with its own drive roller. This segmentation allows individual zones to be controlled to counteract inertial forces of objects, improving positioning accuracy without requiring complete system redesign.
Solution Approach 2:
The controller applies preliminary counter-forces to the conveyor surface before objects reach the end of a zone. By detecting object characteristics and predicting inertial forces, the system pre-adjusts the conveyor surface motion to prevent objects from moving into downstream zones, thereby improving reliability.
2Reliability
If the conveyor surface is stopped abruptly to prevent objects from moving into downstream zones, then object positioning is improved, but additional stopping distance is required and operational efficiency decreases
Solution Approach 1:
The system applies counter-forces preliminarily to decelerate objects gradually before they reach the desired stop position. This preliminary action reduces the need for abrupt stopping, minimizing additional stopping distance and maintaining higher operational efficiency while achieving precise object positioning.
Solution Approach 2:
The conveyor system dynamically adjusts the speed and direction of individual conveyor zones based on real-time object detection and inertial force calculations. This dynamic control allows smooth deceleration and positioning without abrupt stops, improving both stopping precision and operational efficiency.
3Measurement precision
If sensor data is collected and processed to determine inertial forces, then object tracking accuracy is improved, but system complexity and computational requirements increase
Solution Approach 1:
The controller continuously receives sensor data from multiple conveyor zones, processes it to determine object inertial forces, and adjusts conveyor surface motion in real-time. This feedback loop improves measurement precision and object tracking accuracy while distributing computational requirements across the control system.
Solution Approach 2:
The system uses sensors already integrated into the conveyor structure to detect object characteristics and calculate inertial forces. By utilizing existing infrastructure and automated calculations, the system improves measurement precision without proportionally increasing device 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
Effectively halts objects at desired positions, preventing downstream issues and enhancing operational efficiency by accounting for inertial forces.
Implementation Method 1
A conveyor assembly with a plurality of rollers, including a first drive roller and a second roller that can rotate in an opposite direction to generate a counterforce, controlled by a controller that uses sensor data to determine and counteract inertial forces
Data Source
AI summary
Various embodiments are directed to a conveyor assembly and method of using the same. In various embodiments, a conveyor assembly comprises a plurality of rollers configured to facilitate transportation of an object on a conveyor surface, the plurality of rollers comprising a first drive roller operable to rotate in a first rotational direction to cause a movement of the conveyance surface in a conveyance direction; and a second roller configured for rotation in a second rotational direction opposite the first rotational direction to generate a counterforce that opposes the movement of the conveyor surface in the conveyance direction; and a controller configured to control the first drive roller and a secondary motor operable to drive rotation of the second roller in the second rotational direction to stop the movement of the conveyor surface such that the object disposed thereon is stopped at a stop position defined within the conveyor zone.