46results about How to "Synchronous control" patented technology

The invention relates to a device and a method for melt-spinning, drawing off, processing, and winding up several synthetic threads. For this purpose, several filament bundles are extruded from several spinning nozzles that are located next to each other, are cooled, and are combined into one thread, respectively. The threads are wound to bobbins in parallel next to each other after being drawn off and processed. In order to allow the threads to be combined into a thread bundle at the smallest possible deflection angles from a plurality of spinning nozzles, several drawing-off elements are provided which are assigned to a group of spinning nozzles and thus draw off a group of threads. Said drawing-off elements cooperate with at least one processing element that is mounted downstream thereof in such a way that the threads can be directed through the processing element as a thread bundle.

The invention provides a gathering and stitching unit (1) for collating for signatures (16, 18, 20), which comprises a gathering segment (34), a stitching station (24) and a collecting station (29), wherein the stitching station (24) has a finger strip device (50) with a finger strip (510) and at least one stitching head (26) for stitching signatures (30) at a downtime, the finger strip is used for gradual transport of collected signatures (30). The at least one stitching head (26) has a single drive device (1001). According to the invention, the finger strip device (50) has a first drive device (515) impresses an oscillating movement on the finger strip (510) and a second drive device (501) that causes opening and closing of fingers (512) of the finger strip.

The invention relates to a high-precision temperature control method and a temperature control device based on particle accelerator material irradiation. The temperature control device comprises an infrared temperature measuring unit, a resistance heating unit, a water cooling and air cooling unit, a signal control/transmission unit, a sample stage and an irradiation sample thereon, and the like. The sample stage integrates and combines the resistance heating unit and the water cooling and air cooling unit to control irradiation sample heating and cooling simultaneously. The implementation principle of the temperature control method using the temperature control device is as follows: the irradiation temperature of a material is measured in real time using the device, the power of a resistance heating wire and the flow of cooling water and cooling air are controlled via instruction signal transmission lines connected to the computer program control system, and the resistance heating unit and the water cooling and air cooling unit are adjusted automatically and simultaneously to carry out temperature control. Through the temperature control device and the temperature control method of the invention, real-time, automatic and accurate control on the irradiation temperature of a particle accelerator material can be realized, and the temperature control accuracy of particle accelerator material irradiation can be improved greatly.

The invention provides a digital twinning-based vehicle depot rapid departure control method and system, and the method comprises the steps: taking vehicle depot line equipment, including a track unit, a turnout, a vehicle stop and the like, as physical objects, and building corresponding line equipment digital objects; and establishing a digital object of the train by taking the train as a physical object. By constructing a data transmission channel, real-time data transmission is established between the physical object and the digital object, and data synchronization between the physical object and the digital object is ensured. And constructing a digital twinborn body of the vehicle depot, and synchronizing, monitoring, analyzing and controlling the real-time states of equipment such as lines and trains of the vehicle depot. According to the method, the train protection distance is established under the conditions of the position relation between trains, the position relation between the trains and turnouts and the position relation between the trains and other obstacle points, the train target speed distance curve is calculated in combination with the train protection distance, the train traction braking performance and the line condition, and operation control is conducted. And the driving efficiency of the vehicle depot is improved while the driving safety is ensured.

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 invention discloses a method for synchronously controlling different models of video monitoring devices and relates the technical field of video synchronous control. The method comprises following steps: S1. acquiring history frame rates of all sub-video sources in unit time; S2. acquiring the current real-time frame rates of all the sub-video sources; S3: after acquiring the real-time frame rate of each sub-video source, carrying out interframe processing on each sub-video source according to a basic frame rate which is preset in advance and in order to adapt to dynamic change of the real-time frame rates, adopting a positive-negative approximation compensation method; and S4. through the positive-negative approximation compensation method, obtaining output of each sub-video source at the basic frame rate, carrying out proportion transformation on the output of each sub-video source to allow the output to be in the same size and then splicing the transformed synchronous frames into forms required by businesses. The beneficial effects of the method are that by use of the method, the requirements of users of synchronous control and concentrated display on multiple different specifications of video monitoring devices can be met.

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.

The invention relates to the technical field of vehicle lights, in particular to a vehicle light controller for an urban rail vehicle. The vehicle light controller for the urban rail vehicle comprisesa light controller I and a light controller II; light controller circuits are arranged on the light controller I and the light controller II; the light controller circuits comprise input ends, outputends and communication ends; the input ends are connected with braking signals, double flash signals, activating signals, lower beam modes, high beam modes, width modes, left steering signals, rightsteering signals, flashing light signals, daytime running light switching signals, fog light switching signals and light state detecting signals; the output ends are connected with braking lights, lower beams, high beams, width lights, left steering lights, right steering lights, vehicle width lights, fog lights, daytime running lights and tail lights; and the communication ends are connected withRS85 buses. The vehicle light controller for the urban rail vehicle has the advantages that complex logic simplifying effect on the vehicle light control is realized; the control synchronization of the vehicle lights at two ends is realized; redundancy designs of safety related key signals on software and hardware are all realized; and the reliability is improved.

The invention relates to a whole-course us-level-precision wireless ethernet synchronization apparatus of an intelligent transformer station and method thereof. The apparatus comprises a chip DP83640, an FPGA, and a constant-temperature crystal oscillator. Therefore, clock synchronization of different devices in a wireless Ethernet network without the IEEE1588 capability can be realized; and the apparatus and the method can be applied to development of various distributed electrical capacity quantity simulation and detection devices in a power system widely.

The invention discloses a master-slave control method of a high-voltage frequency converter, and the method is suitable for a control system of the high-voltage frequency converter. The method comprises the following steps: S1, providing a host frequency converter and a slave frequency converter; S2, enabling the host frequency converter to receive a speed instruction sent by a control system andto carry out preliminary processing, and synchronously sending the preliminarily processed speed instruction to the slave frequency converter to synchronously control the speed of the slave frequencyconverter; S3, enabling the slave frequency converter to obtain a slave speed detection value through a slave speed regulator, and feeding back the slave speed detection value to the host frequency converter; S4, enabling the host frequency converter to receive the slave speed detection value and calculate the slave speed detection value according to the host speed detection value and the torque compensation instruction so as to output a compensation result; S5, enabling the host frequency converter to send the calculation result to the slave frequency converter so as to compensate for the torque instruction of the slave frequency converter. The method has the beneficial effect that high-precision synchronous control is realized through speed sensorless vector control.

The invention relates to a combing machine comprising at least one group of adjacently arranged combing heads (K1 to K6). The slivers (B) formed on each combing head are fed to a stretching unit (S) on a subsequent conveyor element (32). Each of the combing heads is provided with a nipper assembly (1) which pivots back and forth and with a rotatably mounted combing cylinder (4), and each combing head has two rotatably mounted detaching roller pairs (24, 25), which are arranged one behind the other when seen in the transport direction (F) of the fiber material (W). The drive shafts (H1, H2) ofthe detaching roller pairs extend over multiple combing heads (K1-K6) and carry out a pilgrim step movement during a combing operation, and at least one end of at least one of the detaching roller pairs (24, 25) is driven by at least one electric motor (M1, M2). The aim of the invention is to simplify the electromotive drives of the detaching rollers and to reduce the mass to be accelerated. Thisis achieved in that at least two groups (U1, U2) of adjacently arranged combing heads (K1-K6) are provided, and each of the groups has separate drive shafts (H1 to H4) for the detaching roller pairs (24, 25), said drive shafts being driven by at least one electric motor (M1, M2) directly or indirectly via a transmission stage (G1, G2).

The invention relates to a virtual instrument embedded in a comprehensive teaching experiment platform. The virtual instrument comprises a high-precision measurement function circuit, a high-speed measurement function circuit and a power supply circuit, wherein the high-precision measurement function circuit, the high-speed measurement function circuit and the power supply circuit are respectivelyconnected with the comprehensive teaching experiment platform. The virtual instrument has the advantages that on the basis of meeting the requirements of teaching experiments on the functions and performance, the procurement cost of schools can be obviously reduced; the space resource waste of experiment stations is reduced; the integration of instruments and teaching equipment is realized; and the teaching effect is improved.

The invention discloses a cavity curtain wall capable of being folded and changing. The cavity curtain wall comprises a sunshade unit arranged on a building wall body, the sunshade unit is arranged onthe outer side of a window of the building wall body, and a sealing cavity is formed between the sunshade unit and the window; the sunshade unit comprises an aluminum frame and a sunshade assembly; the sunshade assembly is mounted on the aluminum frame, the sunshade assembly is provided with photovoltaic sunshade plates, all the photovoltaic sunshade plates are connected with the aluminum frame through connecting rods, and all the photovoltaic sunshade plates are of openable structures; the aluminum frame is of an at-least-four-section structure, the top part and the bottom part are fixing frames, a foldable frame is in the middle, and the foldable frame is opened and closed through a lifting device. According to the sunshade outside the building, the appearance is attractive, the structure is simple, the practicability is high, generalizing and using are convenient, and energy consumption of buildings in different seasons can be effectively reduced.

The invention is applicable to the technical field of computers, and provides an equipment pairing method applied to an equipment group, which comprises the following steps: receiving a pairing instruction; if slave equipment exists in the first equipment, sending the pairing instruction to the slave equipment; and if the slave equipment does not exist in the first device, establishing a pairing relationship with the second equipment according to the target equipment information, and configuring the second equipment as the slave equipment of the first equipment. According to the equipment group obtained through the pairing mode, each slave equipment only has one master device, the control end equipment only communicates with one equipment, control and state acquisition of the whole equipment group can be carried out, and the equipment in the whole equipment group can be synchronously controlled and managed.