31results about How to "To achieve the purpose of dynamic adjustment" patented technology

The present invention provides a method and device for adjusting a buffer of multimedia decoding information. The method includes: when it is detected that the decoding of multimedia information is completed, based on the multimedia parameters obtained according to the decoded data, it is judged whether it is necessary to re-allocate the buffer to buffer all The decoded data; when it is judged that the buffer needs to be reallocated, the reallocated buffer is determined based on the multimedia parameters; and the decoded data is cached in the reallocated buffer. By applying the technical solution of the present invention, the purpose of dynamically adjusting the preset buffer area based on the multimedia parameters of the multimedia information to be played can be realized, and the multimedia information to be played can be played smoothly, and the occurrence of stuck or stuck when playing the multimedia information to be played can be avoided. At the same time, it can reduce the occupation of redundant system memory, so as to avoid affecting the system operating performance of the playback device and the operation of other applications, and improve the user experience.

The present invention provides a method and device for constructing dynamic Poisson impedance attributes. The method includes obtaining the original logging curve of the whole well section in the research work area and the logging interpretation conclusion curve; According to the logging curves of the three sections and the logging interpretation conclusion data, the static Poisson impedance property curves, hydrocarbon-bearing pore curves and fluid parameter curves with undetermined coefficients of the corresponding depth section are calculated respectively; Perform correlation analysis between the static Poisson impedance property curve with undetermined coefficient and the hydrocarbon-bearing pore curve of the corresponding depth section to obtain the undetermined coefficient corresponding to the maximum correlation coefficient; obtain the average value of the fluid parameters corresponding to the deep, middle, and shallow sections; Perform linear fitting on the undetermined parameter values ​​of the static Poisson impedance property curves of the deep, middle, and shallow layers and the average value of the fluid parameters in the corresponding depth section to obtain a linear relationship; obtain the dynamic Poisson impedance property curve.

The invention belongs to the technical field of 3D printing, and provides a feedback type 3D printer, aiming at solving the technical problems that various raw materials cannot be used, high-pressurefast jet printing cannot be performed by the existing 3D printer. The feedback type 3D printer includes a print head and a printer body for driving the print head to move in a three-dimensional space.The print head comprises a shell and a mixing shaft, wherein a hot melting part made of plastic is arranged in the shell; the hot melting part is provided with a circular truncated cone-shaped hot melting cavity with a large upper part and a small lower part; the hot melting part is covered with an electromagnetic heater; a sealing cover is arranged on the hot melting cavity; a pressure relief valve is arranged on the sealing cover; a material injection opening is formed in the bottom of the hot melting part; the mixing shaft is provided with spiral mixing blades; both the mixing shaft and the mixing blades are made of metal; the diameters of the mixing blades on the mixing shaft are gradually reduced; the mixing blades can also be in contact with the inner side face of the hot melting cavity simultaneously; a driving shaft is fixed to the top of the mixing shaft; the seal cover is provided with a through hole through which the driving shaft can pass; and driving teeth are arranged onthe driving shaft.

The invention belongs to the fitting device of a loom and particularly relates to a device for controlling tension dynamic balance of warp threads of the loom. The device comprises a resistance disc (5), a resistance rope (6), a spring (9) and a fixed bracket (7); the resistance rope (6) is connected with the resistance disc (5); the fixed bracket (7) is shaped like T or 7; two ends of a transverse rod of the fixed bracket (7) are connected with a stander (1) and a guide roller (8) respectively; the lower end of a vertical rod of the fixed bracket (7) is connected with a tension balance bracket (2); the vertical rod body is connected with a displacement adjusting device (4); one end of the resistance rope (6) is connected with the displacement adjusting device (4) and the other end thereofis connected with the external end of the tension balance bracket (2); the tail end of the external end of the tension balance bracket (2) is connected with a tension balance roller (12); and the tension balance bracket (2) is connected with the fixed bracket (7) by a spring displacement adjusting device (10) and the spring (9). The device achieves the object of dynamically adjusting balance, generates an error of less than 0.25 percent during the operation process, and has small swing amplitude and stable tension control.

The invention belongs to a heating-type dynamically adjustable steam-water directly mixing heat exchange device comprising a front three-way valve (1), a front core (2), a middle three-way valve (3), a middle core (4), a rear two-way valve (5), a temperature sensor, an electric operator and a controller, wherein the front core (2) is coaxially arranged in the middle three-way valve (3); and the middle core (4) is embedded between the middle three-way valve (3) and the rear two-way valve (5). The heat exchange device is characterized in that an adjusting device (7) is arranged between the front core and the middle core, can move forwards and backwards horizontally in the axial direction under the drive of the electric operator, and comprises a water direction adjusting surface (14) and a steam direction adjusting surface (15); the steam flow can be controlled by adjusting the variable sectional area formed by the steam direction adjusting surface and the inner wall surface of a front core spray nozzle; and the water inflow can be controlled by adjusting the area formed by the water direction adjusting surface and the outer wall surface of the front core spray nozzle. When the steam parameter of a user changes, the purpose of continuous dynamic adjustment can be achieved under the condition that the operation of the system is not stopped.

The invention discloses a clock sampling self-adaption adjusting method comprises the following steps: input data are subjected to time delay operation and sampling operation respectively by main and standby monitoring devices according to preset initial time-delay amounts; in a time window, the initial time-delay amounts are adjusted; every time when the initial time-delay amounts are adjusted, main and standby sampling result sequences formed by sampling output values which are obtained after the input data are sampled by the main and standby monitoring devices are output to a time-delay amount adjusting device; the time-delay amount adjusting device controls switch of the main and standby monitoring devices according to the main and standby sampling result sequences, and time-delay amounts are respectively configured for the switched main and standby monitoring devices. The invention also provides a corresponding system. The method and the system provided by the invention are characterized in that data are monitored by the main and standby monitoring devices, switch between the main and standby monitoring devices can be utilized when time delay changes quickly, a time sequence can be recovered to a normal interval in a correct and fast manner, a transmission passageway does not need to be occupied, and transmission efficiency cannot be affected.

The invention discloses a compound control method for a first-order inertial pure hysteresis process, and relates to a model predictive control-active disturbance rejection control compound control method for the first-order inertial pure hysteresis process. In this method, the ADRC controller is firstly designed based on the first-order inertial pure lag process, so that its closed-loop characteristics are close to the expected dynamic equation, and then the model predictive controller is designed according to the expected dynamic equation. The output of the model predictive controller is the output of the ADRC controller. Set value (input value). On the one hand, the present invention can optimize the setting value of the ADRC, and on the other hand, because the ADRC can better overcome the influence of uncertainty brought by internal and external disturbances, the closed-loop response of the controlled process is always close to the expected dynamic equation, Therefore, it is ensured that the performance of the MPC based on the expected dynamic equation as the prediction model will not be severely deteriorated, and its robustness is improved.

The invention discloses a large-caliber variable sonic speed pressurizing heat exchange device. The device consists of a front reducing pipe (1), a steam jet pipe (2), a tee pipe (3), a short two-way pipe (4), a long two-way pipe (6), a back reducing pipe (7), a front mixing chamber (9) and a back mixing chamber (5), wherein the steam jet pipe is inserted into the tee pipe coaxially; the tee pipeis connected between the front reducing pipe and the short two-way pipe; the long two-way pipe is connected between the short two-way pipe and the back reducing pipe to adjust water inlet flow and steam-water mixing proportion inside the mixing chambers; and the back mixing chamber is arranged inside the short two-way pipe and improves the stream and field state of steam-water mixture through changing circulation section area. Through improving the structures of the mixing chambers, the large-caliber variable sonic speed pressurizing heat exchange device can effectively improve the stream andfield state of the steam-water mixture so as to ensure that steam-water mixing mass ratio and pressure ratio inside a heat exchanger are always in the best state. Moreover, the large-caliber variablesonic speed pressurizing heat exchange device effectively reduces equipment operation noise and operation cost and improves heat exchange efficiency and operation safety. When a steam-water parameterof a system is changed, dynamic adjustment can be realized through adjusting the positions of nozzles and the mixing chambers.

The invention discloses a voice broadcasting method and a voice broadcasting device. The method comprises the following steps: in a process that a target user drives, acquiring a first broadcasting duration of a to-be-broadcasted target voice and the current driving speed of the target user, wherein the target voice is a voice needed to prompt before the target user arrives at the target position in a navigation process; calculating the driving distance of the target user in the first broadcasting duration according to the first broadcasting duration and the current driving speed; judging whether the distance from the current position of the target user to a preset position is smaller than or equal to the driving distance or not, wherein the distance between the preset position and the target position is a preset distance; and if the distance from the current position of the target user to a preset position is smaller than or equal to the driving distance, starting to broadcasting the target voice from the current position. The method and device disclosed by the invention solve the technical problem of inaccurate position of the voice broadcasting in the related art.

The invention discloses a PLC-based traffic light control system. The data acquisition module includes a road acquisition unit and a school acquisition unit; the data positioning module is used to obtain and analyze the running coordinates of driving on the road to obtain coordinate analysis information; the data analysis The module is used to receive driving information and school commute information, analyze the driving information to obtain driving analysis information, analyze commute to school information to obtain commute to school analysis information, and combine the driving analysis information and commute to school analysis information to obtain data analysis information; use The data processing module receives and processes the data analysis information to obtain the data processing information; the adjustment control module is used to process the information according to the data and dynamically regulate the operation of the signal lights; The problem of dynamic adjustment of lights, and the problem that the brightness of traffic lights cannot be reasonably arranged.

The invention belongs to a hot-water type dynamic-regulating type steam-water direct-mixing type heat-exchanging device, which comprises a front three-way pipe (1), a front core (2), a middle three-way pipe (3), a middle core (4), a long two-way pipe (5), a temperature sensor, an electric executing mechanism and a controller, wherein the front core (2) is coaxially arranged in the middle three-way pipe (3), the middle core (4) is nested between the middle three-way pipe (3) and the long two-way pipe (5), a regulating device (7) is arranged between the front core and the middle core, the regulating device can make axial forward and backward horizontal movement under the driving of the electric executing mechanism, the regulating device is formed from a water-direction regulating surface (14) and a steam-direction regulating surface (15), the magnitude of the steam quantity is controlled by adjusting a variable sectional area formed from the steam-direction regulating surface and the inner wall surface of a front-core nozzle, and the magnitude of the inlet-water quantity is controlled by adjusting the variable sectional area formed from the water-direction regulating surface and theouter wall surface of the front-core nozzle. When the steam parameter of a user is changed, the purpose of continuous and dynamic regulation is achieved under the condition that the operation of a system is not stopped.

The invention provides a vertical and horizontal hybrid steel pipe welding device, which is characterized in that it includes a base, a welding gun and a plurality of adjustable steel pipe clamping mechanisms, the base is provided with a steel pipe installation port; the welding gun is set on the On the base; a plurality of adjustable steel pipe clamping mechanisms are arranged on the base through columns, and the adjustable steel pipe clamping mechanisms can connect two sections of steel pipes arranged vertically and two sections of steel pipes arranged horizontally. The present invention The device is equipped with an adjustable steel pipe clamping mechanism. By switching the adjustable steel pipe clamping mechanism, the vertical welding and horizontal welding of the steel pipe can be realized at the same time during the welding process, and the welding method can be realized according to the actual size of the steel pipe to be welded during the working process. The rapid replacement effectively improves the welding efficiency.