Dynamic PID Controller Activation for Cooling Systems
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Solution Overview
Problem
Traditional PID control systems in information handling systems consume excessive computing power, memory, and power due to constant operation, increasing costs and resource usage.
Innovation Solution
Implementing a method to dynamically activate and deactivate the PID controller based on system component temperatures and fan speeds, using historical usage data to adjust set points and reduce power consumption by optimizing PID controller activation and deactivation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the PID controller operates continuously to maintain precise temperature control, then temperature stability is improved, but power consumption and computing resource usage increase
Solution Approach 1:
The patent implements dynamic control of the PID controller by adjusting its activation status based on real-time temperature conditions. The controller is activated when temperature deviations exceed thresholds and deactivated when temperatures stabilize, transforming the static continuous operation into a dynamic adaptive system that balances temperature stability with power consumption reduction
Solution Approach 2:
The patent changes the operational parameters of the PID controller by introducing activation thresholds and hysteresis bands. When the temperature difference between actual and target values exceeds a predefined threshold, the PID controller is activated; when the difference falls within the hysteresis band, it is deactivated. This parameter-based control reduces computing resource usage while maintaining adequate temperature stability
2Measurement precision
If the PID controller operates continuously to ensure precise cooling control, then cooling precision is improved, but computing power and memory requirements increase
Solution Approach 1:
The patent applies partial action by activating the PID controller only when necessary - specifically when temperature deviations exceed predefined thresholds. Instead of continuous full-operation control, the system uses intermittent PID control combined with simple threshold-based activation logic, reducing computing power and memory requirements while maintaining adequate cooling control precision during critical temperature deviations
3Use of energy by moving object
If the PID controller is deactivated to reduce power consumption, then power efficiency is improved, but temperature control responsiveness deteriorates
Solution Approach 1:
The patent implements preliminary action by setting proactive temperature thresholds and hysteresis bands that trigger PID controller activation before significant temperature deviations occur. This allows the system to maintain power efficiency through deactivation during stable conditions while ensuring rapid responsiveness when temperature changes approach critical levels, as the thresholds are configured to detect changes early
Data Source
AI summary
Controlling an activation status of a proportional-integral-derivative (PID) controller for an information handling system cooling system, such as the on/off status of the PID controller, can reduce power consumption and processing and memory requirements for such a system. A decrease in resource consumption can be realized by deactivating the PID controller during certain periods and activating the PID controller during others. For example, the PID controller can be deactivated when a temperature of a system component falls below a threshold temperature and activated when the temperature of the system component rises above the threshold temperature.