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78 results about "Control reconfiguration" patented technology

Control reconfiguration is an active approach in control theory to achieve fault-tolerant control for dynamic systems. It is used when severe faults, such as actuator or sensor outages, cause a break-up of the control loop, which must be restructured to prevent failure at the system level. In addition to loop restructuring, the controller parameters must be adjusted to accommodate changed plant dynamics. Control reconfiguration is a building block toward increasing the dependability of systems under feedback control.

A Robust Speech Feature Extraction Method Based on Sparse Decomposition and Reconstruction

The invention discloses a robust speech characteristic extraction method based on sparse decomposition and reconfiguration, relating to a robust speech characteristic extraction method with sparse decomposition and reconfiguration. The robust speech characteristic extraction method solves the problems that 1, the selection of an atomic dictionary has higher the time complexity and is difficult tomeet the sparsity after signal projection; 2, the sparse decomposition of signals has less consideration for time relativity of speech signals and noise signals; and 3, the signal reconfiguration ignores the prior probability of atoms and mutual transformation of all the atoms. The robust speech characteristic extraction method comprises the following detailed steps of: step 1, preprocessing; step 2, conducting discrete Fourier transform and solving a power spectrum; step 3, training and storing the atom dictionary; step 4, conducting sparse decomposition; step 5, reconfiguring the speech spectrum; step 6, adding a Mel triangular filter and taking the logarithm; and step 7, obtaining sparse splicing of Mel cepstrum coefficients and a Mel cepstrum to form the robust characteristic. The robust speech characteristic extraction method is used for the fields of multimedia information processing.
Owner:哈尔滨工业大学高新技术开发总公司

FPGA (Field Programmable Gate Array)-based on-orbit reconfiguration system and method for satellite on-board computer

The invention discloses an FPGA (Field Programmable Gate Array)-based on-orbit reconfiguration system for a satellite on-board computer. The FPGA-based on-orbit reconfiguration system comprises an on-board FPGA chip, a control FPGA chip and an SPI (Serial Peripheral Interface) flash memory unit, wherein the on-board FPGA chip is internally integrated with CPU cores; the control FPGA chip is used for receiving configuration files, which are uploaded by a communication module of a satellite, for on-orbit reconfiguration, unloading the configuration files in the SPI flash memory unit, and controlling the on-orbit reconfiguration of the on-board FPGA chip; the SPI flash memory unit is used for storing the configuration files required for on-orbit reconfiguration; in the process of realizing on-orbit reconfiguration by means of running a JTAG (Joint Test Action Group) configuration mode, the control FPGA chip reads the configuration files required for the JTAG configuration mode from the SPI flash memory unit, and sends the configuration data to the on-board FPGA chip; in the process of realizing on-orbit reconfiguration by means of running an SPI configuration mode, the control FPGA chip informs the on-board FPGA chip of starting the SPI configuration mode, and the on-board FPGA chip reads the configuration files required for the SPI configuration mode from the SPI flash memory unit.
Owner:SHANGHAI ENG CENT FOR MICROSATELLITES

Method and device for calculating beam forming factors used in changing-over process

The invention aims to provide a method and a device for calculating beam forming factors used in a changing-over process. A source cell receives measurement reports sent by a user device, calculates to obtain the beam forming factors of the user device in a target cell by using the measurement reports, writes the beam forming factors in a changing-over request and sends the beam forming factors to the target cell, and sends a wireless resource control reconfiguration request to the user device according to a changing-over response feeding back by the target cell. The user device accesses the target cell according to the reconfiguration request. The target cell sets up a communication connection with the user device according to the beam forming factors by adopting a beam forming mode. Compared with the prior art, the source cell calculates the beam forming factors of the user device in the target cell ahead of time, writes the beam forming factors in the changing-over request and sends the beam forming factors to the target cell, the target cell adopts the beam forming mode according to the mentioned situations, and sets up a communication connection with the user device, therefore the changing-over process is simplified, and the success rate of changing-over is improved.
Owner:ALCATEL LUCENT SHANGHAI BELL CO LTD

System structure and controlling method for terminal reconfiguration in end-to-end reconfiguration environment

The invention relates to a system structure of terminal reconfiguration in the terminal-to-terminal reconfiguration environment and a control method, wherein, the system structure of a reconfigurable terminal consists of three parts, an embedded microprocessor ARM, a digital signal processor (DSP) and a field programmable gate array; the method includes four processes, the detection process of a reconfiguration trigger event, the process of reconfiguration decision and the access technology selection, the reconfiguration software download process and the installation and execution process of the reconfiguration software, which are completed by the cooperation of the reconfiguration terminal, an access point/a base station (AP/BS), and a reconfiguration network management server; the detection process of reconfiguration trigger event, the process of reconfiguration decision and the access technology selection and the reconfiguration software download process are respectively completed by a reconfiguration trigger event detecting module, a module of reconfiguration decision and access technology selection and a reconfiguration software download module in a terminal reconfiguration controller in the embedded microprocessor ARM.
Owner:NANJING UNIV OF POSTS & TELECOMM

Reconfigurable PXI serial communication card and method for achieving remote reconfiguration through reconfigurable PXI serial communication card

The invention discloses a reconfigurable PXI serial communication card and a method for achieving remote reconfiguration through the reconfigurable PXI serial communication card, and relates to the PXI reconfigurable serial communication technology. The reconfigurable PXI serial communication card aims at solving the problem that a PXI3U board card is poor in universality and inconvenient to maintain. A reconfigurable instrument platform of the reconfigurable PXI serial communication card is connected with a function board of the reconfigurable PXI serial communication card in a stack connection mode, the function board is detachably arranged on the back face of the reconfigurable instrument platform, and connecting signals are I/O signals of an FRGA. After a complete network server is formed, the FPGA receives a configuration file sent by a remote configuration computer. The reconfigurable PXI serial communication card can solve the problems that the number of different communication protocol cards is large, the system integration difficulty is high, and cost is high through the reconfiguration function, the serial communication function of the different protocols is achieved, and the reconfigurable PXI serial communication card has the advantages of being high in flexibility and universality, easy to update, suitable for test systems or other systems and the like.
Owner:HARBIN INST OF TECH
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