Vehicle Control System for Dynamic Braking Based on Payload Weight
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Solution Overview
Problem
Vehicles with work implements face maneuverability concerns due to the inability to effectively determine and respond to payload characteristics, such as weight and orientation, which affects braking capacity and stopping distance.
Innovation Solution
A vehicle control system that includes a payload measurement system, sensors for speed and orientation, and a controller to calculate kinetic energy, braking capacity, and stopping distance, and adjust braking and speed limits accordingly, while also projecting light to indicate stopping distance and detecting objects in proximity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the vehicle carries a variable payload, then the work capability is improved, but the braking capacity and stopping distance become unpredictable
Solution Approach 1:
The control system continuously receives payload input from the payload measurement system and uses this feedback to dynamically calculate and adjust braking capacity and stopping distance. This closed-loop feedback mechanism ensures that the braking system adapts to varying payload conditions, maintaining reliable and predictable braking performance regardless of payload changes.
Solution Approach 2:
The system dynamically adjusts braking parameters based on real-time payload measurements. The braking capacity and stopping distance are not fixed values but are continuously updated according to the actual payload conditions, making the braking system adaptive and responsive to changing work requirements.
2Productivity
If the vehicle speed is increased, then the productivity is improved, but the stopping distance increases
Solution Approach 1:
The control system dynamically adjusts the braking capacity based on the vehicle's speed and payload conditions. When the vehicle travels at higher speeds, the system calculates and applies appropriate braking force to achieve the desired stopping distance, making the braking system adaptive to speed variations rather than relying on fixed braking parameters.
Solution Approach 2:
The system changes the braking parameters (braking capacity and stopping distance) based on varying operational conditions including speed and payload. By continuously adjusting these parameters according to real-time measurements, the system maintains optimal braking performance across different speed ranges without requiring manual intervention.
3Measurement precision
If a payload measurement system is added, then the braking accuracy is improved, but the device complexity increases
Solution Approach 1:
The control system serves multiple functions: it manages vehicle operation, processes payload measurements, calculates braking capacity, determines stopping distance, and controls projection systems. By consolidating these diverse functions into a single control system, the patent avoids the need for separate dedicated systems for each function, thereby reducing overall system complexity while maintaining high measurement and control accuracy.
Solution Approach 2:
The patent combines the payload measurement system, braking control system, speed sensing, and projection systems into an integrated control architecture. This merging of previously separate systems into a unified control platform reduces the number of independent components and simplifies system management while enabling precise braking control based on accurate payload measurements.
Data Source
AI summary
Vehicles and methods of operating vehicles are disclosed herein. A vehicle includes a main frame, a work implement, and a control system. The work implement is supported by the main frame and configured to carry a payload in use of the vehicle. The control system is supported by the main frame and configured to control operation of the vehicle. The control system includes a payload measurement system configured to provide payload input indicative of a variable payload carried by the work implement in use of the vehicle and a controller coupled to the payload measurement system.