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3 results about "Active value" patented technology

Movable yro life predicting method based on gray mode

The invention relates to a dynamic adjust gyroscope life forecasting method based on gray model. By data collection of vibration effective value, random drift and environmental temperature parameter which are preprocessed using radial neural networks, influence of environmental temperature on vibration effective value and random drift is eliminated and random drift and effective value just related to time are obtained by subtracting drift constant value term, then trend term of vibration effective value and random drift are extracted by using wavelet transformation and gray model are built separately for their trend term. The smaller data in two values of life predicted of dynamic adjust gyroscope unless two predicted values exceeding performance parameter limitation when dynamic adjust gyroscope is considered losing effect. The invention uses performance parameter of life probative period of product to predict its life, showing discipline of performance parameter and life of dynamic adjust gyroscope. It is easy and convenient economical and reliable.
Owner:SHANGHAI JIAO TONG UNIV

ACCESS PERMISSIONS FOR STORAGE AREAS

A control unit (300) comprising the following: a control unit memory (120) with a configuration register (124) for defining an operating mode of the control unit (300) and a lock register (122) for storing a lock indicator, wherein, immediately after authorization information has been set during a system initialization event, the lock indicator in the lock register (122) is set to a value indicating whether at least part of the authorization information can be changed or not, and set up a controller (302) to: to receive a request for access to a first memory area of ​​a memory (308) from a request device (306) separate from the control unit (300); in response to the request to access authorization information, which contains a multitude of entries corresponding to different memory areas (110-1 to 110-n) of the memory (308), each entry of the multitude of entries comprising a multitude of indicators, the indicators comprising: a first indicator that can assume an active value, representing an execution access mode in which instructions are retrieved from the respective memory area for execution, a second indicator that can assume an active value representing a privileged access mode in which access to the respective memory area is permitted if the requester has a privileged level; and a third indicator representing a read or write mode on a memory area; and Based on the occurrence of the system initialization event and according to the metadata of the request and the authorization information, to determine whether access to the content in the first storage area is allowed.
Owner:HEWLETT PACKARD ENTERPRISE DEV LP

Multi-band electric power recording preprocessing method and system containing effective value sampling

The invention relates to the technical field of power grid fault diagnosis, and provides a multi-band electric power recording preprocessing method and system containing effective value sampling, and the method comprises the steps: obtaining recording data; judging whether each sampling frequency in the recording data meets a preset condition or not, if so, marking the recorded wave as an effective value signal segment, and otherwise, marking the recorded wave as an alternating current signal segment; for each channel in the recording data, traversing an effective value signal segment in the channel, and then executing parameter calculation and signal reconstruction: calculating a phase parameter of a sampling point in the effective value signal segment; calculating a phase difference; calculating effective value signal duration; calculating the amplitude of the reconstructed signal; calculating the reference frequency of the reconstructed signal; calculating a phase correction coefficient k; calculating the phase of the reconstructed signal, and obtaining the expression of the reconstructed signal; and calculating the sampling frequency of the reconstructed signal. Effective values with different frequencies can be sampled and restored into standard alternating current waveforms with continuous phases, and a more accurate data basis is provided for intelligent wave recording analysis.
Owner:NANJING GUODIAN NANZI POWER GRID AUTOMATION CO LTD