Power Supply Feedback Ratio Calculation for Rapid Stabilization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional power supply apparatuses struggle to maintain stability and responsiveness when there are fluctuations in the system characteristics, including load changes, due to fixed performance limitations of analog controllers and imprecise equivalent circuit approximations, leading to degraded circuit properties and delayed stabilization.
Innovation Solution
A power supply apparatus utilizing an A/D converter, digital calculation unit, D/A converter, and feedback ratio calculation unit to adjust control values and response speed based on feedback ratios, enabling rapid stabilization and fluctuation suppression of power supply signals, with the digital calculation unit capable of switching between different control modes and coefficient adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an analog controller is used with fixed performance, then the circuit structure is simple, but the power supply apparatus cannot adapt to fluctuations in system characteristics and parasitic parameters
Solution Approach 1:
The patent applies dynamics by making the controller's performance adjustable rather than fixed. The digital calculation unit dynamically changes control parameters (gain, bandwidth) based on detected system characteristics and parasitic parameters, allowing the controller to adapt to different operating conditions while maintaining a relatively simple overall structure.
Solution Approach 2:
The patent changes controller parameters dynamically based on system conditions. The digital calculation unit modifies control parameter values according to detected parasitic parameters and system characteristics, enabling the same hardware structure to perform differently under varying conditions without requiring multiple fixed controllers.
2Stability of the object's composition
If the feedback bandwidth is narrowed to stabilize circuit operation, then stability is improved, but the response speed and circuit properties are degraded
Solution Approach 1:
The patent makes the feedback bandwidth dynamic rather than static. The digital calculation unit adjusts the feedback bandwidth based on system conditions - widening it when fast response is needed and narrowing it when stability is prioritized - thus resolving the trade-off between stability and response speed.
Solution Approach 2:
The controller periodically detects system characteristics and parasitic parameters, then adjusts control parameters accordingly. This periodic adaptation allows the system to maintain optimal performance across changing conditions without requiring continuous complex control.
3Ease of manufacture
If equivalent circuit approximations are used for control target and parasitic parameters, then the design process is simplified, but measurement precision and control accuracy are reduced
Solution Approach 1:
The patent replaces approximate analytical methods with direct digital detection. Instead of relying on equivalent circuit approximations, the system uses detection circuits to directly measure control target values and parasitic parameters, then processes these measurements digitally for precise control.
Solution Approach 2:
The patent introduces detection circuits as intermediaries between the physical system and the controller. These circuits directly sense control target values and parasitic parameters, providing accurate measurement data to the digital calculation unit without requiring simplified mathematical models.
Data Source
AI summary
A power supply apparatus supplies a power supply signal to a device's power supply terminal via a power supply line. An A/D converter receives, via a feedback line, an analog measurement value corresponding to the power supply signal supplied to the device's power supply line, and converts the analog measurement value into a digital measurement value. A digital calculation unit generates a control value by digital calculation such that the digital measurement value from the A/D converter matches a predetermined reference value. A D/A converter digital/analog converts the control value so as to supply the analog power supply signal to the device's power supply terminal via the power supply line. A feedback ratio calculation unit calculates the ratio between the control value and the digital measurement value. The digital calculation unit is configured to change its calculation content based on the ratio calculated by the feedback ratio calculation unit.