Dynamic Conveyor Speed Control for Picking Throughput
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Solution Overview
Problem
Current order-picking systems face limitations in performance due to fixed conveying speeds, which result in suboptimal throughput and increased dead times, especially when handling a variety of goods with different weights and sizes, leading to inefficiencies in sorting and processing.
Innovation Solution
Implementing a dynamic control system for the matrix conveyor's speed based on parameters such as weight and size of the transported goods, allowing for adaptive conveying speeds within batches to optimize picking performance and reduce equipment requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If fixed conveying speed is used in the picking system, then the system operation is simple, but the picking performance and throughput are reduced
Solution Approach 1:
The conveying speed of the matrix conveyor is made dynamically adjustable based on the weight of transport units. The control system receives weight information from weighing devices and automatically adapts the conveying speed, allowing the system to optimize productivity without requiring complex manual intervention for each transport unit
Solution Approach 2:
A feedback loop is established where weighing devices measure the weight of transport units, transmit this information to the control system, which then adjusts the conveying speed accordingly. This closed-loop control enables the system to respond to actual conditions and optimize performance while maintaining manageable control complexity through automated decision-making
2Productivity
If fixed conveying speed is used, then the equipment requirements are reduced, but dead times increase and throughput decreases
Solution Approach 1:
The conveying speed parameter is changed dynamically based on the weight parameter of transport units. By adjusting the speed parameter in response to weight variations, the system eliminates dead times caused by inappropriate fixed speeds while maintaining equipment requirements at acceptable levels
Solution Approach 2:
The system transitions from static fixed speed operation to dynamic speed adjustment, where the conveying speed automatically adapts to the weight of each transport unit. This dynamic behavior reduces dead times and increases throughput without requiring additional equipment
3Productivity
If dynamic speed adjustment is implemented, then picking performance is improved, but the control system complexity increases
Solution Approach 1:
The control system uses feedback from weighing devices to automatically adjust conveying speed, eliminating the need for complex manual control while improving picking performance. The automated feedback loop handles the complexity internally, keeping the user interface simple
Solution Approach 2:
The system performs self-adjustment of conveying speed based on weight information, without requiring complex external control intervention. The control system autonomously optimizes performance based on sensor data, reducing the burden on operators and simplifying the overall control architecture
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 picking performance by adjusting conveying speeds according to the specific characteristics of goods, reducing dead times and optimizing throughput, while minimizing equipment needs and control efforts.
Implementation Method 1
The weighing device (81) comprises a holding device (811) which weighs the transport unit (9.2) containing the goods (10.2)
Data Source
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AI summary
A picking system (100) is described, which includes a weighing device (81) and transport units (9.1, 9.2, 9.3), wherein the picking system (100) has a rail (101) on which the transport units (9.1, 9.2, 9.3) can be suspended and the weighing device (81) includes a rail section (1011) which is designed separately from the rail (101) and is connected to a holding device (811) which weighs the rail section (1011) together with the transport unit (9.2).