6 results about "Critical phase" patented technology

According to the elevator diagnosis method and system based on functional safety, functional safety diagnosis is paused in the running stage of an elevator needing to be quickly responded, a control system can centralize resources to process related tasks, such as accurate control over elevator car leveling and timely response to door machine instructions, response delay caused by diagnosis program interference is avoided, and the service life of the elevator is prolonged. The probability of accidents caused by untimely response is reduced, and quick and accurate response in a key stage is guaranteed; secondly, by setting the threshold duration of pause function safety diagnosis and overtime forced recovery diagnosis, long-time non-monitoring in the quick response stage is avoided, and in the normal operation stage of the elevator, diagnosis is recovered and periodically executed, the elevator function is continuously detected, potential safety problems are found and early warned in time, so that maintenance and repair measures are taken, and the safety of the elevator is guaranteed. The response speed and safety monitoring are balanced, the safety monitoring effectiveness of the overall function of the elevator is guaranteed, and the operation safety is improved.

This invention discloses a method and system for managing the lifespan of a driver chip based on digital twins. The invention relates to the technical field of driver chips. By tracing the various deviations output by the driver chip twin, corresponding multi-source anomaly data is determined. This multi-source anomaly data is then mapped in multiple directions to the actual working content of the driver chip at the physical layer, thereby dynamically constructing a corresponding lifespan topology map. Furthermore, by combining a long short-term memory mechanism, corresponding temporal degradation features are extracted, improving the accuracy of the driver chip's temporal degradation features. Multi-level iterations are performed on each critical phase transition point to predict the driver chip's lifespan characteristic combination under current operating conditions, determining the remaining lifespan of the driver chip. This remaining lifespan is then integrated with the current usage history of the driver chip, improving the accuracy of the driver chip's lifespan management system.

The proposed rolling bearing life prediction method based on planar vibration characteristics and degradation history includes: constructing a bearing lifecycle vibration signal dataset and extracting planar vibration characteristics, including principal direction angle and ellipticity; constructing degradation history features by zero-padding the feature sequence of the entire bearing degradation process to a fixed length; training a CNN-LSTM-based hybrid model that inputs the degradation history features and outputs a predicted remaining life value; and optimizing the model using a weighted mean square error loss function to improve prediction accuracy in the critical stage before failure. By integrating multi-directional vibration information with a complete degradation history, the proposed method achieves an RMSE of 0.154 on the PHM2012 dataset, a 47.3% improvement over traditional methods. This method is suitable for bearing health monitoring and maintenance decision-making under variable speed and load conditions.

The invention discloses a pneumatic conveying optimization control method and system based on conveying state recognition, pneumatic conveying states comprise a dilute phase, a critical phase and a dense phase, and the method comprises the steps that calculation indexes are defined, and a pressure grading standard and a flow grading standard are set in the system design stage; a control unit of the system activates a sensor module after receiving a starting instruction, initializes key parameters, establishes an initial judgment reference and enters a conveying waiting state; the system enters a conveying state, and the control unit determines a current conveying mode according to an initial judgment benchmark and stores pressure and flow data collected in real time into a memory; after conveying is finished each time, according to the collected pressure and flow data, the pressure and the flow of the conveying peak section are taken out and converted into corresponding average values to be stored in a storage; and the control unit executes the control strategy according to the current conveying mode. The system has the characteristics that the stability of the system is improved, and the pipe is not easy to block.

A method for reducing latency and increasing throughput in a reconfigurable computing system includes receiving a user program for execution on a reconfigurable dataflow computing system, comprising a grid of compute units and grid of memory units interconnected with a switching array. The user program includes multiple tensor-based algebraic expressions that are converted to an intermediate representation comprising multiple stages. Each stage includes one or more logical operations executable via dataflow through compute units, and each stage is preceded by and followed by a buffer, each buffer corresponding to one or more memory units. The method includes detecting a memory mapping operation within a critical stage and moving the memory mapping operation to an adjacent stage, wherein the memory mapping operation is executable by memory units within the adjacent stage and dataflow through the buffer is controlled by one or more memory units within the grid of memory units.

A method of generating second harmonic radiation from fundamental frequency radiation comprises the following operating steps: providing one or more nonlinear crystals (C) satisfying conditions of second harmonic generation (SHG) by non-critical phase matching; providing an optical phase actuator (A), upstream or downstream of said nonlinear crystal (C) with respect to the principal optical axis (O) of the nonlinear crystal, a step of varying one or more of said parameters of said optical actuator (A) over time by controlling the temperature of the optical actuator (A) itself, or by applying an electric or magnetic field to said optical actuator (A), the parameters of the optical actuator (A) are determined for which the measured power is maximum relative to the power measured during the execution of the plurality of measurements.