Construction Machine Velocity Control for Finish Grade Uniformity
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Solution Overview
Problem
Modern construction machines face challenges in achieving optimal velocity control, leading to unevenness in finish grade surfaces due to inadequate real-time monitoring and adjustment of machine speed in response to varying surface types and designs.
Innovation Solution
A computer-implemented method that captures sensor data to estimate the actual surface of a construction site, calculates deviations from a target surface, and adjusts the construction machine's velocity to minimize performance errors, using a velocity control loop that interacts with the primary vertical grade control loop to optimize stability and surface finish.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the construction machine operates at high velocity to improve productivity, then the construction project completion time is reduced, but the finish grade surface becomes uneven due to inadequate real-time velocity control
Solution Approach 1:
The system implements a velocity control loop that continuously monitors actual velocity through sensors and compares it with target velocity, then adjusts the machine velocity in real-time to maintain optimal grading performance while maximizing productivity
Solution Approach 2:
The system dynamically adjusts the machine velocity based on real-time conditions rather than operating at a fixed speed, allowing the velocity to vary optimally for different surface types and grading requirements while maintaining overall high productivity
2Manufacturing precision
If the machine velocity is reduced to improve surface finish quality, then the finish grade uniformity is improved, but the construction project completion time increases
Solution Approach 1:
The velocity control loop provides continuous feedback on grading performance and adjusts velocity dynamically, allowing the system to operate at higher speeds when conditions permit while automatically slowing down when surface quality requires it, thus minimizing time loss while maintaining precision
3Manufacturing precision
If real-time velocity monitoring and adjustment systems are added to the construction machine, then the finish grade surface quality is improved, but the system complexity increases
Solution Approach 1:
The velocity control system is integrated with the existing vertical grade control loop and sensor infrastructure, allowing these components to serve multiple functions (both grade control and velocity optimization) rather than requiring entirely separate dedicated systems
Solution Approach 2:
The system merges the velocity control loop with the primary vertical grade control loop, combining sensor data processing and control functions into a unified system that reduces overall complexity while achieving both grade precision and velocity optimization
Data Source
AI summary
Described herein are systems, methods, and other techniques for controlling a velocity of a construction machine operating within a construction site. Sensor data is captured using one or more sensors of the construction machine while the construction machine is moving at the velocity in a forward or a backward direction. An actual surface of the construction site is estimated based on the sensor data. A deviation between a target surface and the actual surface is calculated. An actual performance metric is calculated based on the deviation. The actual performance metric is compared to a target performance metric to determine a velocity adjustment. The velocity of the construction machine is adjusted by the velocity adjustment.