46results about How to "Synchronous control" patented technology

The invention relates to an optical time-diversion multiplexing device based on an aperture limited time lens and belongs to the technical field of high-speed optical communication. The optical time-diversion multiplexing device comprises a polarization controller, a phase modulator, a dispersive medium unit, an intensity modulator, a dispersion compensation unit, a frame clock source, a power divider, two phase shifters and two power amplifiers, wherein the polarization controller, the phase modulator, the dispersive medium unit, the intensity modulator and the dispersion compensation unit are sequentially and optically connected, the frame clock source, the first phase shifter, the power divider and the second phase shifter are sequentially connected, the input end of the first power amplifier and the input end of the second power amplifier are connected with the output end of the power divider and the output end of the second phase shifter respectively, and the output end of the first power amplifier and the output end of the second power amplifier are connected with the phase modulator and the intensity modulator respectively. The optical time-diversion multiplexing device based on the aperture limited time lens has the advantages of being simple in structure, stable in performance and low in power penalty.

The invention discloses a method and a system of data synchronism in a business service. The method includes: step one, a main data module is called by a main business module to carry out data operation; step two, after the main data module carries out the data operation, if the data operation is finished successfully, step three is performed, otherwise, the data operation is in rollback, and data operation failure is replied to the main business module; step three, the main data module transmits data operation requirements to a backup data module, the backup data module carries out the data operation according to the requirements, if the data operation is finished successfully, step four is performed, and otherwise, step five is performed; step four, the backup data module replies data operation success to the main data module, and the main data module replies the data operation success to the main business module; and step five, the data operation is rolled back by the backup data module, the data operation failure is replied to the main data module, the data operation is rolled back by the main data module, and the operation failure is replied to the main business module. According to the method and the system of the data synchronism in the business service, the problem that the data synchronism is not controlled by the business service is solved.

The machine has a stitching head for stitching signatures at a downtime. A finger strip device (50) has a finger strip (510) for gradual transport of collected signatures from a transfer point of a collecting section to a delivery station through a stitching station. A stitching head comprises a drive for forming and driving a wire clamp. The strip device comprises another drive that impresses an oscillating movement on the finger strip. The strip device comprises a third drive that causes opening and closing of fingers (512) of the finger strip. An independent claim is also included for a method for controlling a gathering and stitching machine.

A synchronization device particularly for at least two windshield wipers, comprising at least two wipers (11, 111), each of which is composed of a blade (12, 112) that is kinematically connected to an electric motor or gearmotor (13, 113) in order to oscillate between two preset positions (A, B); means (14) for activating / deactivating the gearmotor (13, 113); means (15, 115) for signaling the transit of each one of the blades (12, 112) through a preset reference position (C); means (16) for controlling the signals and driving the activation / deactivation means (14); the device further comprising: means (17) for determining the wiping time for each one of the wipers (11, 111); means (18) for calculating, in relation to the transit of the at least two wipers (11, 111) at the respective means (15) for signaling transit, the lead time error of the at least one wiper that is faster (11a, 111a) with respect to the slower wiper (11b, 111b) of the at least two wipers (11, 111); means (19) for calculating a correction time in order to reduce the lead error of each one of the at least one faster wiper (11a, 111a); means (19a) for identifying, at each wipe, the slower wiper (11b, 111b) and means (20, 120) for applying each one of the correction times to the corresponding motor / gearmotor (13, 113) of the at least one faster wiper (11a, 111a).

The invention discloses a master-slave control method of a high-voltage frequency converter, which is suitable for a control system of a high-voltage frequency converter, comprising: step S1, providing a host frequency converter and a slave frequency converter; speed command and perform preliminary processing; at the same time, synchronously send the speed command after preliminary processing to the slave inverter to control the speed of the slave inverter synchronously; step S3, the slave inverter obtains the speed detection of the slave through the slave speed regulator and feedback the detected value of the slave speed to the host inverter; step S4, the host inverter receives the detected value of the speed of the slave, and performs the detected value of the speed of the slave according to the detected value of the speed of the host and the torque compensation command. Calculate to output the compensation result; in step S5, the host inverter sends the calculation result to the slave inverter to compensate the torque command of the slave inverter. Beneficial effects: High-precision synchronous control is realized through the speed sensorless vector control.

The invention discloses a building exterior sunshading control system and method. The building exterior sunshading control system comprises a PLC and a plurality of temperature and luminance sensors. The temperature and luminance sensors are arranged on a plurality of sunshading units of a building correspondingly. Each sunshading unit comprises a drive device which drives a foldable aluminium alloy frame to be opened, a limiting device used for locking the foldable aluminium alloy frame, a self-locking device and an electric motor used for driving a rotary shutter device to rotate. The PLC, the temperature and luminance sensors, the limiting devices, the self-locking devices and the electric motors are in wired or wireless connection. The building exterior sunshading control system can meet different requirements for energy-saving and indoor lighting of buildings simultaneously, has various 'expression' changes, and enriches the vertical area effect of the buildings.

A liquid fuel special cooking stove belongs to the technology field of the manufacture of stoves, and mainly comprises an outer sleeve (13) of a combustion chamber which is provided with a base (11) of the combustion chamber at the interior, an outer cover (19) of an air buffer chamber which is provided with an air inlet pipe (12), an air nozzle hole (18) which is provided on the base (11) of thecombustion chamber, an igniter (16), the outer sleeve (2) of a fire-distributing carburetor which is provided with a fuel stream nozzle hole (9), a lower screw rod (21) which is provided with a liquidfuel pipe (5) and a pre-heating fuel pipe (20) at the interior, the fire-distributing carburetor (4) which is arranged in the outer sleeve (2) of the fire-distributing carburetor, a liquid fuel outlet hole (3) which is opened at the upper part of the liquid fuel pipe (5), a pre-heating fuel outlet (15) which is arranged on the pre-heating fuel pipe (20), a lock nut (1) of the fire-distributing carburetor which is arranged between the outer sleeve (2) of the fire-distributing carburetor and the top part of the liquid fuel pipe (5) and so on. The overall structural design is reasonable, which can effectively improve the combustion efficiency and reduce the environmental pollution.

The present invention provides a digital twin-based control method and system for rapid derailment of depots, using depot line equipment, including track units, turnouts, train stalls, etc. as physical objects, to establish corresponding digital objects of line equipment; Build digital objects of trains for physical objects. By building a data transmission channel, physical objects and digital objects establish real-time data transmission to ensure data synchronization between physical objects and digital objects. Build a digital twin of the depot to synchronize, monitor, analyze, and control the real-time status of equipment such as lines and trains in the depot. The invention takes the positional relationship between trains, the positional relationship between trains and turnouts, and the positional relationship between trains and other obstacle points as conditions to establish the train protection distance, and calculates the train protection distance in combination with the train protection distance, train traction braking performance and line conditions. The target speed distance curve, and run control. Ensuring the safety of dispatching vehicles while improving the dispatching efficiency of depots.