Compactor Turning Speed Limiter Based on Surface Temperature
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Solution Overview
Problem
Compactors often cause tearing in newly laid surfaces due to aggressive turning, especially when the surface is hot or the travel speed is slow, as existing technologies lack effective mechanisms to limit turning speed based on real-time conditions.
Innovation Solution
A system on compactors that includes a speed sensor, temperature sensor, and controller to limit turning speed based on measured travel speed and surface temperature, providing alerts and logging incidents of excessive steering speed, thereby preventing surface damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the compactor performs aggressive turning to improve maneuverability and reduce turning radius, then the turning speed increases, but tearing occurs in the newly laid surface
Solution Approach 1:
The system dynamically changes the turning speed parameter based on detected travel speed and surface temperature conditions. When the compactor travels slowly over hot surfaces, the system automatically reduces the maximum allowable turning speed to prevent surface tearing, while allowing faster turning under different conditions.
Solution Approach 2:
The system uses sensors to continuously monitor travel speed and surface temperature, then feeds this information back to the controller which adjusts the steering actuator commands. This closed-loop feedback mechanism ensures turning speed is appropriately limited based on real-time operating conditions that affect surface damage risk.
2Object-affected harmful factors
If the compactor travels slowly over hot surfaces to maintain surface quality, then surface tearing is reduced, but productivity decreases
Solution Approach 1:
The system dynamically adjusts turning speed limits based on real-time conditions rather than imposing a fixed restriction. By evaluating both travel speed and surface temperature, the system allows aggressive turning when conditions permit (maintaining productivity) while automatically restraining turning when surface damage risk is high (protecting surface quality).
Solution Approach 2:
The system changes the turning speed parameter adaptively based on the combination of travel speed and surface temperature. When both conditions indicate low risk (higher travel speed and lower surface temperature), the system permits faster turning to maintain productivity. When conditions indicate high risk (lower travel speed and higher surface temperature), the system reduces turning speed to prevent tearing.
3Object-affected harmful factors
If the system continuously monitors travel speed and surface temperature to prevent surface tearing, then surface quality is improved, but device complexity increases
Solution Approach 1:
The system uses a multi-functional controller that performs both steering control and surface damage prevention functions. The same controller that manages normal steering operations also processes sensor data from speed and temperature sensors to determine when turning speed restrictions should be applied, eliminating the need for a separate dedicated control system.
Solution Approach 2:
The system uses existing compactor components (sensors, controller, steering actuator) to provide the surface protection function without requiring entirely new hardware. The controller leverages data already being collected for operational control and adds the surface protection logic using the same existing infrastructure.
Data Source
AI summary
A system and method for limiting a turning speed of a compactor is disclosed. The compactor includes a steering member configured to receive operator steering input. The system may comprise a speed sensor, and a controller in communication with the speed sensor. The speed sensor may be mounted on the compactor and configured to measure a travel speed of the compactor over a surface. In some embodiments, a temperature sensor, configured to measure a temperature of the surface, may be mounted on the compactor and in communication with the controller. The controller is configured to receive the travel speed and/or temperature, and to limit a turning speed of the compactor when a condition is satisfied.