Grouped Actuator Control for Agricultural Machine Bus Bandwidth
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Solution Overview
Problem
Existing agricultural working machine control and regulating systems face inefficiencies due to high throughput of switching commands, limited bandwidth, and potential data loss, particularly during dynamic adjustments in environmental conditions, leading to impaired spreading and processing accuracy.
Innovation Solution
The system combines switching commands into group switching commands, using a bus system like CAN FD or Ethernet, and employs identifiers and setting parameters to control multiple actuating elements simultaneously, reducing the number of commands and enhancing transmission speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If switching commands are transmitted individually for each actuating element, then each actuating element can be controlled precisely, but the throughput of switching commands becomes excessively high, leading to data loss and control delays
Solution Approach 1:
The patent combines multiple individual switching commands for different actuating elements into a single group switching command. This group command contains setting parameters that can be applied to multiple actuating elements simultaneously, thereby reducing the total number of commands transmitted while maintaining individual control capability through parameter differentiation.
Solution Approach 2:
The group switching command is designed to serve multiple actuating elements with a single command structure. By incorporating identifiers and setting parameters that can be differentiated, the universal command structure achieves both bulk control efficiency and individual element precision, resolving the contradiction between control precision and transmission efficiency.
2Productivity
If the number of actuating elements is increased to cover larger working widths, then the working efficiency of the agricultural machine is improved, but the number of switching commands required increases, exceeding the bandwidth capacity of the control system
Solution Approach 1:
By merging control commands for multiple actuating elements into group switching commands, the system reduces the total command count proportionally to the number of elements controlled per group. This allows the control system to manage larger numbers of actuating elements without exceeding bandwidth capacity, thereby supporting larger working widths while maintaining manageable control complexity.
Solution Approach 2:
The system uses parameter differentiation within group switching commands to control individual actuating elements. By changing parameters such as identifiers and setting values within the unified command structure, the system can precisely control each element while transmitting far fewer commands than individual control would require, enabling scaling to larger working widths.
3Manufacturing precision
If dynamic adjustment of application rate is implemented during cornering and curve traversal, then the spreading accuracy is improved, but the adjustment frequency increases, leading to particularly high command throughput and potential data loss
Solution Approach 1:
The patent applies group switching commands to control multiple actuating elements during dynamic operations such as cornering and curve traversal. By adjusting parameters within group commands rather than sending individual adjustment commands for each element, the system maintains high spreading accuracy through dynamic adjustment while reducing command throughput to prevent data loss in the control system.
Data Source
AI summary
A control or regulating system for an agricultural working machine is provided, the system comprising a plurality of actuating elements that can be controlled individually or in groups, at least one control unit for receiving and/or sending switching commands to control the actuating elements, wherein the switching commands have at least one setting parameter setting and/or configuring the actuating elements, and at least one signal line to connect at least two actuating elements to the control unit for signal transmission. The switching commands are combined into at least one common group switching command that is transmitted via the at least one signal line, and the actuating elements are set and/or configured by the at least one group switching command. In turn, the efficiency and dependability of previous control or regulating systems is improved in a simple manner.