3 results about "Nonlinear system" patented technology

This invention relates to the field of cervical and lumbar spine rehabilitation technology, and more particularly to a cervical and lumbar spine rehabilitation training system integrating posture monitoring and motion guidance. The system includes the following modules: a data acquisition and preprocessing module, used to collect real-time three-dimensional posture data of the user's cervical, thoracic, and lumbar spine and related joints, and generate motion data after standardization processing; and a micro-deviation analysis module, which generates a personalized micro-deviation accumulation model based on the motion data, predicts micro-deviations in real time, and generates personalized training adjustment strategies based on the user's physiological characteristics, historical training data, and current movements. In this invention, the micro-deviation analysis module extracts joint position, angle, velocity, and acceleration features from the standardized motion data, and combines this with nonlinear system modeling, user physiological characteristics, and historical training data to realize a personalized micro-deviation accumulation model, generating real-time micro-deviation prediction and training adjustment strategies.

The invention discloses a battery anomaly detection method, device and equipment based on a sliding-mode observer, and relates to the technical field of batteries, the method comprises the following steps: obtaining real-time operation data of a to-be-detected battery, determining a real-time discharge rate according to the real-time operation data, and determining the real-time discharge rate of the to-be-detected battery according to the real-time discharge rate; calling a matched open-circuit voltage value-battery charge state mapping curve according to the real-time discharge rate; constructing an equivalent model, and constructing a nonlinear system model according to the equivalent model; constructing a sliding-mode observer according to the nonlinear system model, and predicting a predicted value of each state variable of each cell at each time node; and obtaining a measured value of the state variable of each cell at each time node in the operation cycle, marking abnormal cells according to the predicted value and the measured value of the state variable, and determining an abnormal detection result of the to-be-detected battery according to the number of the abnormal cells. According to the invention, the problem of insufficient capability of identifying hidden and slow anomalies such as soft faults and gradual faults can be solved, so that effective early warning of abnormal batteries can be realized.

The invention provides a Shenfu injection alcohol solution pH overshoot control method, device and equipment and a storage medium, and relates to the technical field of traditional Chinese medicine pharmaceutical engineering. The control method comprises the following steps: acquiring an initial volume of a to-be-adjusted liquid medicine and calculating a predicted total alkali amount; adding first-stage alkali liquor until a preset inflection point proportion is reached; adding of the alkali liquor is stopped, and the real-time pH value is measured; if the real-time pH value is within the inflection point pH range, marking the current accumulated alkali adding amount as the actual inflection point alkali adding amount, and calculating the residual required alkali adding amount; and adding the residual required alkali into the to-be-adjusted liquid medicine. According to the invention, model prediction is combined with segmented control, and intermittent cleaning measurement is utilized to thoroughly solve the problem of detection misalignment caused by precipitation interference on the electrode. Meanwhile, based on a dynamic calibration mechanism of inflection point actual measurement data, control deviation of a nonlinear system is effectively overcome, accurate locking of a pH end point is achieved, effective components are prevented from being decomposed due to overshoot, and production efficiency and medicine quality are remarkably improved.