30results about How to "Implement fault tolerance" patented technology

The invention relates to an aero-engine gas circuit part fault detection method, and solves problems that the calculation burden is heavy and the fault tolerance is poor when a standard extended Kalman filtering algorithm employs a centralized-type structure for gas circuit health diagnosis. Moreover, the designed sensor fault detection and isolation method based on state consistency can achieve the fault tolerance function of the sensor. The method takes a filtering structure of a fusion structure as the basis, and a fault detection unit is additionally disposed between each local filter and a main filter. The sensor fault detection is carried out under the condition that when the sensor is normal, all local filters are consistent in state estimation. If a fault happens to a subsystem, the subsystem is isolated. When fusion is carried out in the main filter, the information of a fault subsystem is eliminated, and the method just carries out information fusion and feedback on a normal subsystem, thereby achieving the fault diagnosis of a gas circuit with a function of sensor fault tolerance.

The invention is applicable to the technical field of communication and provides a watchdog fault-tolerant processing method and a mobile terminal. The method comprises the following steps of: setting a blacklist of a process, wherein the blacklist comprises one or more appointed abnormal processes; and when detecting that a counter of a watchdog is timed out, closing the abnormal processes, which cause timeout, according to the blacklist, and resetting the counter. According to the watchdog fault-tolerant processing method and the mobile terminal, provided by the invention, fault-tolerant processing of the single abnormal process is realized, and whole machine resetting and restart with relatively high cost are avoided; and a fault-tolerant recovering process of the abnormal processes by the watchdog is effectively simplified and fault-tolerant recovering time is shortened.

The invention discloses a distribution grid self-healing control system which is characterized by comprising an entity Agent, a function Agent, an interface Agent and a translation Agent; the entity Agent comprises two types including an element type and an integration type; the element-type entity Agent is embedded in a controlled apparatus; the interface Agent is embedded in a control terminal; the integration-type entity Agent, the function Agent and the translation Agent are embedded in a server; the entity Agent is connected with other systems by the translation Agent, connected with a scheduler by the interface Agent and used for ensuring the normal running of the controlled apparatus via the processing task of the function Agent. The problems in the development of the distribution grid self-healing control system are solved by adopting the multifunctional intelligent system provided by the invention.

The invention discloses a data processing method and device and belongs to the technical field of multimedia. The method comprises the following steps: when a blanking row is determined to be detectedbased on the value of SAV and the value of EAV in a received data row, counting the continuous valid quantity; if the continuous valid quantity reaches the first preset quantity, analyzing valid datacontained in the detected valid row whenever the blanking row is determined to be detected based on the value of the SAV and the value of the EAV in the received data row after the EAV of a next blanking row is detected; in the analyzing process, when the blanking row is detected again based on the value of the SAV and the value of the EAV in the received data row, ending the analyzing operation,and recombining the valid data, obtained by analyzing according to a preset data row format on the basis of a preset resolution and a receiving timing sequence, into frames, thereby solving the problem of row lost or frame drop caused by discarding the data rows once a fault is detected by using the CRC, and improving the fault tolerance processing of the data.

The invention provides a filling type hollow hydraulic support device and belongs to the technical field of hydraulic supports. The filling type hollow hydraulic support device is characterized in that the filling type hollow hydraulic support device comprises a blind hole base, a connecting disk, an outer cylinder body, an inner cylinder body, a piston, a compressing spring, a piston cover, a top cover, a top cover connecting disk, an oblique wedge and a ring sleeve; a top cover connecting disk of the top cover is connected with a piston of a hollow hydraulic cylinder formed through combination of the outer cylinder body, the inner cylinder body, the piston, the compressing spring and the piston cover; the bottom end of the hollow hydraulic cylinder is connected with the upper end of the blind hole base through the connecting disk; the T-shaped top cover penetrates through hollow cavities of all the parts; filling balls are poured into a center cavity of the blind hole base through a funnel inserted into an oblique hole in the blind hole base, so that the functions of hydraulic constant-resistance support in a working state and fault-tolerance support for safe supporting of the filling balls and the T-shaped top cover in a fault state are achieved; and when a support is dismounted, the filling balls are taken out after the oblique wedge of the blind hole base is pulled out, and thus hydraulic unloading is achieved. The filling type hollow hydraulic support device has the advantages that the structure is simple, installation and maintenance are convenient, and safety is facilitated through dual support.

The invention discloses a fault-tolerant control method of a dual-motor synchronous control system. The feedback speed and rotor position are input to a synchronous control unit, and the three-phase currents of the dual motors are respectively transformed by Park and Clark to obtain respective feedback AC-D axis currents. The corresponding torque is input to the synchronous control unit for comparison, and the corresponding angle and speed compensation strategy is determined; the quadrature axis reference current and the direct axis reference current are compared with the feedback AC and direct axis currents of the dual motors, and the respective arc and direct axis reference voltages are calculated ; The AC-D axis reference voltage of the dual motors is inversely transformed by Park to obtain two voltage components in the stationary coordinate system, and three duty ratio signals are obtained respectively; by detecting the three-phase current of the dual motors to judge the faulty bridge arm of the inverter, The fault signal is sent to the fault-tolerant inverter and the PWM signal logic synthesis unit to complete the reconstruction of the fault-tolerant topology and the realization of the fault-tolerant algorithm, and finally realize the fault-tolerant control of the double permanent magnet synchronous motor. System reliability is high.

The invention discloses a set-top box fusion gateway and its starting method, device and computer storage medium, belonging to the technical field of fusion gateways. The method includes: after the gateway side is powered on, starting the boot system, wherein the boot system is stored in the memory on the gateway side; reading the gateway system from the memory on the set-top box side through the boot system and starting it. In the embodiment of the present invention, only the boot system is stored in the memory on the gateway side, and the gateway system is not stored, and the gateway system is read and started from the set-top box side during startup, so that there is no need to configure a larger memory for the gateway side to save costs.

The invention discloses an elevator control device which comprises an energy storage device (20), a bus voltage detection device (4), an energy storage device state detector (21), a charge / discharge circuit (19) and an energy storage device controller (22), wherein the charge / discharge circuit comprises n (n>=2) parallel branches; and the energy storage device controller (22) can determine and distribute and control the regenerated energy or power needing to be transferred between the DC (direct current) bus and the energy storage device (20) among the branches of the charge / discharge circuit (19) so as to realize energy or power transfer between the energy storage device (20) and the DC bus. According to the invention, the functions of 'regeneration energy storage and electric energy releasing' of the conventional energy storing elevator energy saving device as well as the functions of system fault tolerance, effective reduction of electric parameter and power consumption of power module, the prolonging of service life and the like can be realized, and the equipment capacity of the elevator power system can be effectively reduced.

The invention provides a free fault-tolerant gait planning method, device and storage medium of a hexapod robot. The method includes the following steps: acquiring state information of the hexapod robot and ground foothold information; determining the swing of the hexapod robot according to the state information The combination of legs and the moving step of the center of gravity of the body; combined with the moving step of the center of gravity of the body and the state information, respectively determine the trajectory of the body center of gravity of the hexapod robot and the landing area of ​​each swinging leg; The target foothold point in the foot area; for the swing leg that has no target foothold point or cannot land, control the swing leg to hover at the predetermined position; for the swing leg that can land on the corresponding target foothold point, according to the state information and the target foothold point to determine the trajectory of the foot end of the swinging leg. The technical scheme of the present invention can plan the gait of the hexapod robot when the swing leg has no foothold or cannot foothold, and improves the ability of the hexapod robot to pass through the terrain with sparse footholds.