Variable Voltage Power Supply Tracing Accuracy
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Solution Overview
Problem
Existing variable voltage power supplies face significant errors in outputting a voltage closest to the reference signal due to limited accuracy and high tracing errors, which is attributed to the use of constant voltage sources and inefficient control mechanisms.
Innovation Solution
A variable voltage power supply system comprising a controller, a variable voltage source group, and a switch group, where the controller determines the required output voltage and adjusts the switch group to ensure the variable voltage sources output a voltage closest to the reference signal, utilizing pulse width modulation to refine the output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If constant voltage sources are used in the variable voltage power supply, then the device complexity is reduced and costs are decreased, but the manufacturing precision and tracing accuracy of the output voltage deteriorate
Solution Approach 1:
The patent applies dynamics by transitioning from static constant voltage sources to dynamic variable voltage sources that can adjust their output continuously. The variable voltage sources respond to reference signals in real-time, enabling the power supply to trace the reference voltage accurately while maintaining ease of manufacture through integrated control circuits.
Solution Approach 2:
The patent implements parameter changes by allowing the voltage sources to vary their output parameters dynamically rather than being fixed. The variable voltage sources change their output voltage level according to the reference signal strength, achieving high tracing accuracy without requiring multiple discrete constant voltage sources.
2Reliability
If the cycle length is extended to accommodate setup time of constant voltage sources, then the reliability of voltage output is improved, but the speed of voltage response deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-configuring the variable voltage sources and their control circuits to be ready for immediate response. The sources are continuously monitored and can switch states rapidly without requiring extended setup time, thus maintaining reliability while improving response speed.
Solution Approach 2:
The patent replaces the mechanical switching approach of constant voltage sources with electronic control of variable voltage sources. This substitution eliminates the need for physical switching and extended setup times, achieving both high reliability and fast response through electronic modulation.
3Adaptability or versatility
If multiple constant voltage sources are used to cover a broadband reference signal, then the adaptability of the power supply is improved, but the device complexity and volume increase
Solution Approach 1:
The patent implements universality by using variable voltage sources that can perform multiple voltage levels with a single component. Each variable voltage source can adapt its output to match different reference signal levels, eliminating the need for multiple specialized constant voltage sources and reducing overall device complexity.
Solution Approach 2:
The patent applies dynamics by enabling voltage sources to change their characteristics continuously rather than being fixed. This dynamic capability allows a smaller number of variable voltage sources to cover a broader voltage range, reducing device complexity while maintaining or improving adaptability.
4Productivity
If the variable voltage power supply is designed to output voltage dynamically, then the productivity and versatility are improved, but the measurement precision and tracing accuracy deteriorate due to limited accuracy of constant power supplies
Solution Approach 1:
The patent implements feedback by continuously monitoring the output voltage and comparing it with the reference signal. The control circuit adjusts the variable voltage sources based on this feedback to minimize tracing error, achieving high accuracy while maintaining dynamic performance and productivity.
Solution Approach 2:
The patent applies dynamics by using variable voltage sources that can adjust their output in real-time to match the reference signal. This dynamic capability enables both high productivity through rapid voltage changes and high tracing accuracy through continuous adaptation to the reference signal.
Data Source
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AI summary
The present invention relates to a variable voltage power supply and a method for controlling an output voltage. The variable voltage power supply includes: a controller, a variable voltage source group, and a switch group, where the variable voltage source group includes at least two variable voltage sources and is configured to supply a voltage; the switch group includes at least two switches, where each switch connects to one variable voltage source; and the controller connects to each of the variable voltage sources and the switch group, and is configured to determine an output voltage required for the variable voltage group, set a variable voltage source which outputs the required output voltage in the variable voltage group, and control the switch group, so as to control the variable voltage source which is set to output the required output voltage to output a voltage.