Work Implement Delay Compensation with Adaptive Lookahead Control
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Solution Overview
Problem
Conventional systems for work machines rely on manual input to compensate for mechanical or electrical delays in implementing working intermissions, leading to potential damage to non-work areas due to inaccurate lookahead times.
Innovation Solution
An automated system for detecting and correcting lookahead delays by determining working conditions, generating commands for actuators, and adjusting delays based on actual execution errors, using sensors and controllers to manage work implement operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual input is used to set lookahead time or distance, then the system can compensate for mechanical or electrical delays, but the measurement is difficult and varies with machine setup or work conditions, resulting in inaccurate control
Solution Approach 1:
The system automatically detects actual delays by monitoring the time between command issuance and implement response, then self-corrects the lookahead parameters without operator intervention. The controller measures real-time delay values and updates its internal models accordingly, eliminating the need for manual calibration while improving accuracy across varying work conditions.
Solution Approach 2:
The system continuously monitors actual implement response times and feeds this information back to the controller, which then adjusts lookahead time or distance parameters accordingly. This closed-loop feedback mechanism enables the system to adapt to changing mechanical and electrical delay conditions automatically, maintaining accurate control despite varying machine setup or work conditions.
2Manufacturing precision
If conventional systems use fixed lookahead time or distance, then the control system is simple, but it cannot adapt to varying mechanical or electrical delays, causing products to be applied at wrong locations
Solution Approach 1:
The system transitions from fixed lookahead parameters to dynamic, real-time adjusted parameters. The controller continuously measures actual delay values and updates lookahead time or distance accordingly, allowing the control system to adapt to varying mechanical and electrical conditions while maintaining product application accuracy at the correct locations.
Solution Approach 2:
The system replaces manual mechanical adjustment methods with automated electronic measurement and computation. The controller electronically measures actual delay times and calculates appropriate lookahead corrections, substituting the need for manual operator intervention and physical calibration with automated digital processing, thereby improving precision without significant complexity increase.
3Object-affected harmful factors
If the work machine operates continuously without accurate delay compensation, then productivity is maintained, but damage occurs to non-work areas such as waterways due to overrun or underrun errors
Solution Approach 1:
The system performs preliminary measurement of actual delays and pre-adjusts lookahead parameters before reaching critical boundary areas. By continuously monitoring and updating delay compensation in advance, the system ensures that when approaching non-work areas like waterways, the implement is already positioned correctly to avoid damage while maintaining efficient work area coverage.
Data Source
AI summary
Systems and methods are provided for automated self-correction of lookahead delay for working intermissions of at least one work implement associated with a work machine. During traverse by the work machine of a work area, one or more working conditions are determined and command generated to at least one actuator corresponding to a working intermission for an associated work implement or component thereof, wherein the generated command accounts for an estimated delay between initiation of the command and execution of at least part of the working intermission. An error value is ascertained based on a determined actual delay with respect to the estimated delay, and a modified delay is stored based on the ascertained error value as the estimated delay for subsequent working intermissions at least with respect to the determined one or more working conditions.