CN-121995721-A - Chip optical clock temperature self-adaptive dynamic compensation method

CN121995721ACN 121995721 ACN121995721 ACN 121995721ACN-121995721-A

Abstract

The invention provides a chip optical clock temperature self-adaptive dynamic compensation method which comprises the steps of establishing a temperature working point data frame through a brief data corresponding relation between a chip optical clock temperature working point and frequency stability, establishing a distributed temperature sensor network, sensing environment multidimensional temperature, establishing a dynamic compensation model based on the temperature working point data frame and the environment multidimensional temperature sensing, designing a corresponding compensation algorithm based on a correction strategy in the dynamic compensation model construction, realizing self-adaptive solving of an optimal temperature working point of a chip optical clock, dynamically compensating temperature fluctuation, improving working performance directly related to temperature, and being easy to realize, reasonable in method and easy to operate.

Inventors

LI YUEBAO
WANG XIUMEI
WANG DANYANG
WANG YIFEI
LIU GUODONG
WANG LIANG

Assignees

北京无线电计量测试研究所

Dates

Publication Date: 20260508
Application Date: 20251203

Claims (10)

1. The self-adaptive dynamic compensation method for the temperature of the chip optical clock is characterized by comprising the following steps of: Establishing a temperature working point data frame through a brief data corresponding relation between a chip optical clock temperature working point and frequency stability; establishing a distributed temperature sensor network, and sensing the environmental multidimensional temperature; constructing a dynamic compensation model based on a temperature working point data frame and environmental multidimensional temperature sensing; based on a correction strategy in the dynamic compensation model construction, a corresponding compensation algorithm is designed.
2. The method of claim 1, wherein the brief data correspondence between the chip clock temperature operating point and the frequency stability is shown by a graph with a temperature resolution of 10 ℃ for a temperature interval.
3. The method of claim 1, wherein the simplified data correspondence between the chip optical clock temperature operating point and the frequency stability is used as historical data to provide a standardized data management database for the regulation of the complex temperature operating point and to create a dynamic and traceable decision historical database for adaptively searching the optimal temperature operating point.
4. The method of claim 1, wherein the temperature operating point data framework includes an emergency strategy for establishing an overrun condition for a temperature operating point under a particular extreme condition.
5. The method according to any one of claims 1 to 4, wherein the step of establishing a distributed temperature sensor network to sense the environmental multidimensional temperature comprises: Establishing a distributed temperature sensor network, deploying a plurality of high-precision sensors to capture the temperature gradient of a space, including testing the temperature distribution conditions of the outside of a chip optical clock in different directions or different positions, and establishing a temperature field in a three-dimensional space; Establishing temperature time sequence data analysis, and monitoring the temperature change rate and fluctuation frequency characteristics; And (5) filtering the environmental interference, and removing relevant noise through Kalman filtering or wavelet transformation.
6. The method of claim 5, wherein constructing the dynamic compensation model based on the temperature operating point data frame and the environmental multidimensional temperature sensing specifically comprises: For confirming the optimal initial temperature working point, constructing a linear model of ' temperature working point circular scanning, frequency stability output verification, searching for a temperature working point corresponding to the highest frequency stability ', confirming the optimal initial temperature working point ' based on a temperature working point data frame, and correcting actual initial temperature working point parameters to be the optimal initial temperature working point; Based on environment multidimensional temperature sensing, a temperature-error mapping relation is established by adopting a neural network or support vector regression, and nonlinear modeling is realized, wherein based on an online learning mechanism, temperature control parameters are corrected by adopting a staged compensation strategy through a recursive least square method or reinforcement learning dynamic updating model parameters.
7. The method of claim 6, wherein in the dynamic compensation model construction, the strategy for correcting the actual initial temperature operating point parameter and the temperature control parameter is implemented by an adaptive process, and the passive setting or response is upgraded to active adaptation.
8. The method according to claim 7, wherein designing the corresponding compensation algorithm based on the correction strategy in the dynamic compensation model construction specifically comprises: The method comprises the steps of predicting interference in advance and injecting reverse control quantity for feedforward compensation, adjusting the control quantity according to real-time deviation for feedback compensation, using a PID controller for quick response for instantaneous temperature mutation for short-term compensation, and adjusting a temperature control working point by combining historical data for predicting trend for long-term compensation.
9. The method of claim 8, wherein for the corresponding step size algorithm, if in a complex extreme temperature environment, a predictive control algorithm is added to optimize a multi-step compensation strategy based on future state predictions.
10. The method of claim 9, wherein all compensation algorithms are implemented quickly using a high-speed hardware system to achieve response times on the order of microseconds.

Description

Chip optical clock temperature self-adaptive dynamic compensation method Technical Field The invention relates to the technical field of optical frequency marks, in particular to a chip optical clock temperature self-adaptive dynamic compensation method. Background The chip optical clock mainly utilizes a novel optical clock based on optical frequency transition in a heat atom, and with the development of photon integration technology, laser technology and micro-electromechanical technology in recent years, the optical clock can realize smaller volume and higher precision, has the advantages of high precision, low power consumption, portability and the like, and is expected to be widely applied to various national defense equipment sensitive to volume, quality, power consumption and precision. As a portable watch clock, the watch clock is necessarily required to have high-precision characteristics, is low in sensitivity to environmental temperature fluctuation, and has good key performances such as long-term frequency stability and startup reproducibility. The collisions between atomic energy levels, affected by temperature, cause perturbations in the ground and excited state wave functions, which can lead to broadening and frequency shifting of the spectral lines. And the temperature working point is too high, the existence of a spectrum line broadening mechanism can lead to the reduction of spectrum line quality factors and deteriorate the frequency stability, and the temperature working point is too low, so that the overall signal-to-noise ratio can be reduced in a mode of reducing the atomic density, and the short-term frequency stability is deteriorated. It is therefore desirable to optimize the temperature operating point at the optimum. At the same time, the collision frequency shift mechanism of atoms will deteriorate the frequency accuracy of the chip optical clock due to the excessive temperature fluctuation. Therefore, the temperature operating point is required to operate at an optimal position, and the fluctuation range is reduced as much as possible. The limited fixed temperature working point of the traditional method is difficult to realize the optimal frequency stability, and the fixed compensation coefficient or the static model of temperature control is difficult to cope with nonlinear and time-varying temperature scenes. Therefore, a new method is needed to adaptively solve the optimal temperature operating point of the chip optical clock, and dynamically compensate the temperature fluctuation, namely, the adaptive irregular dynamic compensation is needed to be performed on the temperature operating point and the fluctuation range of the chip optical clock. The dynamic compensation is one of important directions for realizing the future intelligent control system of the chip optical clock. Disclosure of Invention The invention provides a self-adaptive dynamic compensation method based on the temperature of a chip optical clock, which is used for carrying out self-adaptive solution on an optimal temperature working point of the chip optical clock, carrying out dynamic compensation on temperature fluctuation and improving the working performance directly related to the temperature. In a first aspect, a method for adaptive dynamic compensation based on a chip optical clock temperature is provided, including: Establishing a temperature working point data frame through a brief data corresponding relation between a chip optical clock temperature working point and frequency stability; establishing a distributed temperature sensor network, and sensing the environmental multidimensional temperature; constructing a dynamic compensation model based on a temperature working point data frame and environmental multidimensional temperature sensing; based on a correction strategy in the dynamic compensation model construction, a corresponding compensation algorithm is designed. In one embodiment, the brief data correspondence between the chip clock temperature operating point and the frequency stability is shown by a graph with a temperature resolution of 10 ℃ as the temperature interval. In one embodiment, the simple data corresponding relation between the temperature working point and the frequency stability of the chip optical clock can be used as historical data to provide a standardized data management database for regulating and controlling the complex temperature working point and to establish a dynamic and traceable decision historical database for adaptively searching the optimal temperature working point. In one embodiment, the temperature operating point data framework includes an emergency strategy for the case of an established temperature overrun for a temperature operating point under specific extreme conditions. In one embodiment, a distributed temperature sensor network is established, and the sensing of the environmental multidimensional temperature specifically comprises: Establishing