Adaptive PLL Phase Target Control for Resonance Tracking
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Solution Overview
Problem
Conventional phase lock loops (PLLs) face challenges in efficiently adjusting their center frequency and phase difference targets to maintain resonance and reduce power consumption, especially in varying environmental conditions, as they often require complex and power-intensive methods to track resonant frequencies.
Innovation Solution
The implementation of an adaptive phase lock loop (PLL) with an adaptive voltage controlled oscillator (VCO) that automatically adjusts its center frequency and phase difference target by integrating frequency and phase differences, allowing it to track changes in resonant frequencies and maintain resonance without the need for continuous measurement and adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional PLL methods are used to track resonant frequencies, then frequency tracking capability is achieved, but power consumption increases and system efficiency decreases
Solution Approach 1:
The patent implements an adaptive VCO that dynamically adjusts its center frequency based on detected resonant frequency shifts, replacing static frequency tracking with adaptive dynamics. This allows the system to respond only when frequency changes occur, reducing continuous power consumption while maintaining tracking capability
Solution Approach 2:
The invention changes the operating parameters of the VCO by adjusting its center frequency to match detected resonant frequencies. This parameter adaptation enables the system to maintain optimal operation across varying conditions without continuous high-power consumption
2Measurement precision
If continuous measurement and adjustment is implemented to maintain resonance, then frequency accuracy is improved, but device complexity and power consumption increase
Solution Approach 1:
The adaptive PLL system performs self-adjustment by automatically detecting resonant frequency shifts and correcting its own center frequency through the adaptive VCO. This self-service mechanism eliminates the need for complex external measurement and adjustment systems while maintaining high frequency accuracy
Solution Approach 2:
The patent implements a feedback mechanism where the detected resonant frequency information is fed back to adjust the VCO center frequency. This closed-loop feedback ensures accurate frequency tracking while using a relatively simple implementation compared to continuous measurement systems
3Adaptability or versatility
If adaptive VCO adjusts center frequency to track resonant frequency, then adaptability to environmental changes is improved, but device complexity increases
Solution Approach 1:
The adaptive VCO introduces dynamic adaptability by allowing the center frequency to change in response to environmental variations. This dynamic characteristic enables the system to automatically adapt to temperature changes, load variations, and other environmental factors without adding complex external control systems
Data Source
AI summary
Techniques are described herein that are capable of adjusting a center frequency of an adaptive voltage controlled oscillator (VCO) that is included in an adaptive phase lock loop (PLL) and/or a phase difference target of the adaptive PLL. An adaptive PLL is a PLL that includes an adaptive VCO. An adaptive VCO is a VCO that is capable of adjusting its center frequency and/or a phase difference target of the adaptive PLL that includes the adaptive VCO. The adaptive PLL may be configured to drive (e.g., control) a device. A drive signal that is used to drive the device and a resulting output signal that is proportional to movement of the device may be fed back to respective inputs of the adaptive PLL so that the phases of those signals may be processed to facilitate adjustment of the center frequency and/or the phase difference target.