4 results about "Fault handling" patented technology

The invention relates to a traction converter and control, fault processing and carrier phase shifting methods thereof. The traction converter comprises a first pre-charging loop and a second pre-charging loop that are connected with a secondary-side winding of the traction transformer respectively, a first four-quadrant rectifier module connected in series with the first pre-charging loop, a second four-quadrant rectifier module connected in series with the second pre-charging loop, an intermediate direct-current voltage loop with the input terminal connected with the output terminal of the first four-quadrant rectifier module and the output terminal of the second four-quadrant rectifier module, a first traction inverter module with the input terminal connected with the output terminal ofthe intermediate direct-current voltage loop, a second traction inverter module with the input terminal connected with the output terminal of the intermediate direct-current voltage loop, and an auxiliary inversion system with the input terminal connected with the output terminal of the intermediate direct-current voltage loop. According to the traction converter, the single four-quadrant rectifier module can work and the single traction inverter module can work; and the robustness is high, the fault rate is low, the size is reduced, and the cost is lowered.

The invention provides a fault processing method, a fault processing device and a storage medium. The method comprises the following steps: judging whether first terminal equipment has a fault or notin the process of executing a first part of services of a distributed service; under the condition that a fault occurs, storing the calling information of the first terminal device in a distributed file system, and storing the distributed service log set of the first terminal device in a distributed file system, wherein the distributed service log set of the first terminal device comprises a plurality of logs generated by the first terminal device in a predetermined time period associated with the time when the fault occurs. According to the method and the device, the call chain can be recorded by using the call chain identifier, a main line is provided for tracking and positioning of the service fault, and the positioning capacity of the equipment after the fault occurs is improved. The collection of related logs is triggered through distributed faults, a heartbeat mechanism does not need to be arranged to detect the abnormal state of equipment, and the influence on normal services isreduced.

The invention discloses a direct-current charger model suitable for a hardware-in-the-loop simulation system. The model comprises a CAN message receiving layer, an application layer and a CAN messagesending layer; the CAN message receiving layer is connected with the application layer and the CAN message sending layer; and the application layer is connected with the CAN message sending layer. With the direct-current charger model suitable for the hardware-in-the-loop simulation system of the invention adopted, the normal communication of the direct-current charging CAN of a BMS (battery management system) can be tested, the fault of a whole communication process can be simulated, and whether the BMS can judge a fault and performs appropriate fault processing in the event of a fault can betested.

The invention relates to the technical field of precast concrete slab production, and provides a maintenance house maintenance state control system of a precast concrete slab production line. the system comprises a main controller PLC, a man-machine interaction display unit and pallet truck; the main controller PLC comprises a fault processing module, a pallet truck control module and a maintenance house state control module; and the pallet truck control module is connected with the pallet truck, and the main controller PLC is connected with the man-machine interaction display unit. A method using the control system is further provided. The system and method are advantageous in that multi-mode control is adopted, a maintenance house maintenance state is clear and controllable, the product quality is ensured, the system and method have guidance and normativity for workers' operation, and the qualified rate of products and production efficiency of a concrete production line are improved.