69results about How to "Improve dynamic tuning performance" patented technology

The invention discloses a DC converting power supply device. The device comprises a transformer, a transformer primary side circuit, a transformer secondary side circuit; the transformer secondary side circuit comprises a rectifying circuit with the function of reshaping and transformation which is used to transform the square wave voltage output by the transformer to the DC output voltage; and the device also comprises a control unit which controls the transformer secondary side circuit according to the DC output voltage, adjusts the DC output voltage and facilitates the DC output voltage tobe the stable target value. The invention also discloses a method for improving the DC converting power supply device. The method comprises that: the secondary winding is coupled with a rectifying circuit with the function of reshaping and transformation, the square voltage output by the transformer is transformed into the DC output voltage; the DC output voltage is detected, according to the DC output voltage, the DC output voltage is adjusted to become the stable target value. By the invention, the dynamic performances of the DC converting power supply can be improved.

Proportional pressure control valve with a magnetic part and a valve part, the valve part has an inflow opening for the inflow stream, a first outflow opening for the filling stream, and a second outflow opening for the tank volume stream, and has a ball seat, a flat seat with an opening, a closing part for controlling the throughput quantity through the opening of the flat seat, and a stream diverter. The inflow opening faces away from the magnetic part and coaxially to its longitudinal axis, and the outflow openings are constructed on the side wall of the valve part radially to its longitudinal axis, so that fluid flowing from through the valve is exposed to a diversion of a maximum of 90°. The fluid, after flowing through the ball seat and to and through the stream diverter, experiences a diversion of less than 30°.

The invention discloses a power grid voltage regulation method of an angle form cascade synchronous compensator. Unbalanced three-phase power grid voltage is independently subjected to positive and negative sequence voltage detection to obtain positive sequence voltage dq shaft components Vd[P] and Vq[P] and negative sequence voltage dq shaft components Vd[N] and Vq[N]; a difference value between the positive sequence voltage dq shaft components and a voltage control instruction as well as a difference between the negative sequence voltage dq shaft components and the voltage control instruction can be independently obtained, and a deviation is subjected to slip form PI control to obtain a STATCOM (Satellite Communications) line current positive and negative sequence dq shaft control instruction; after the STATCOM line current positive and negative sequence dq shaft control instruction is subjected to synchronous frame transform, zero sequence circulating current is combined to obtain a STATCOM phase current instruction; the STATCOM phase current instruction is subjected to current dead-beat control to obtain each-phase chain link modulating wave signal; carrier phase-shifting modulation is used for controlling each module switch to act, finally, positive sequence reactive current and negative sequence current are injected into a power grid, the positive sequence voltage of the power grid is supported, and the voltage fluctuation of a point of common coupling is reduced; and the negative sequence voltage of the point of common coupling is inhibited, and the unbalance of power grid voltage is improved. A slip form PI control method adopted by the invention can quickly support the positive sequence voltage of the power grid, control the positive sequence voltage of the power grid, inhibit short-time voltage leap and maintain the stability of the power grid voltage.

The invention discloses an in-tunnel vehicle automatic light changing system based on physiological comfortability. The system includes an illuminance detection unit, an index detection unit, an illuminance compensation device, an index adaptability device and a headlamp controlling device, the illuminance detection unit is connected with a photoelectric illuminance meter, and the input of the illuminance detection unit is connected with the illuminance compensation device; the input of the index detection unit is connected with a speed sensor, a heart-rate sensor, a myoelectricity sensor and an eye-movement device, the output of the index detection unit is connected with the input of the index adaptability device, the output of the index adaptability device is connected with the input of the illuminance compensation device, the illuminance compensation device and a timer are in both-way connection, and the output of the illuminance compensation device is connected with the headlamp controlling device. According to the system, a traditional tunnel lighting mode is changed, wherein in the traditional tunnel lighting mode, fixed lighting facilities are used as illumination compensation sources, and in the in-tunnel vehicle automatic light changing system, dynamic headlamps of mobile vehicles are used as the illumination compensation sources.

A magnetic friction clutch has two clutch parts, supported so that they can rotate relative to each other around an axis of rotation. A first clutch part has at least two clamping jaws which are movable somewhat toward and away from each other. A second clutch part, situated between the clamping jaws, is of disk-shaped design. The clamping jaws are pressable against the second clutch part by the magnetic force of a variable magnetic flux which is carried in the clutch parts in a soft magnetic material, in order to form a frictionally engaged connection between the clutch parts. The second clutch part has a plurality of soft magnetic ring zones permeated by the magnetic flux, which extend in the circumferential direction and are separated from each other in the radial direction by slots running in the circumferential direction. Ring zones adjacent to each other in the radial direction are connected with each other by bridging links. The slots are filled with a solidified casting material that connects the ring zones with each other. Inner and / or outer circumferential surfaces of the ring zones that face each other follow a line that deviates from a circular line running concentric to the axis of rotation. The second clutch part can have a plurality of layers made of different soft magnetic materials.

The invention provides a method for automatically adjusting voice transmission parameters. The method comprises the following steps: setting adjusted automated voice transmission parameters; obtaining a differentiated services code point (DSCP) value of a mobile communication system, and carrying out carrying and transporting network quality detection on the obtained DSCP value according to the adjusted automated voice transmission parameters; and determining to automatically promote voice transmission priority according to the carrying and transporting network quality detection results. The invention further provides a device and a system for automatically adjusting the voice transmission parameters. By adopting the method, the device and the system for automatically adjusting the voice transmission parameters, the problem of adjustment of the voice transmission priority caused by change of the carrying and transporting network quality can be solved, the transmission quality of the current carrying and transporting network can be detected conveniently, and the voice service transmission priority can be automatically adjusted, thus ensuring the voice quality of a mobile communication network and promoting the maintenance and operation level of the mobile communication network.

A storage device 500 includes an input 405 for receiving a digital video stream complying with a predetermined video encoding standard via a digital video communication system. The stream includes a sequence of digital video frames, a sequence of program clock reference stamps (PCR) and a sequence of video presentation time stamps (PTS). A time-base modifier 510 replaces the PTS's by respective modified video presentation time stamps (M-PTS) based on a constant predetermined frame time between successive presentation time stamps and replaces the PCR's by respective modified program clock reference stamps (M-PCR) by scaling the PCR's using a scaling factor that depends on a ratio of an expected time between a video presentation time stamp j and a preceding video presentation time stamp j−n and an actual time between the video presentation time stamp j and the preceding video presentation time stamp j−n, where j≧n>0. The expected time is n times the predetermined frame time.

The invention discloses a cleaning robot, an intelligent control method and device thereof and a storage medium. The control method comprises the following steps: detecting a target position in a current working area through the cleaning robot to obtain a first ground feature detection parameter; after detection, controlling the cleaning robot to clean the target position for one or more times, and detecting the target position in the current working area again through the cleaning robot to obtain a second ground feature detection parameter; and comparing the second ground feature detection parameter with the first ground feature detection parameter, generating a real-time control instruction according to a parameter comparison result, and controlling the cleaning robot based on the real-time control instruction. Ground environment changes caused by cleaning can be detected based on different ground features before and after cleaning treatment, the working mode of the cleaning robot is adaptively controlled according to the environment changes, and the method has the advantages of being good in dynamic adjustment effect, good in real-time performance, high in intelligent degree and the like.

The invention provides a bean sheet jelly primary pulp transporting and cooling system, and relates to the technical field of production manufacturing equipment of edible bean sheet jelly. The bean sheet jelly primary pulp transporting and cooling system comprises a cooling chamber, a conveyer belt bracket, multilayer conveyer belts which are mounted in the cooling chamber in a cooperating manner,a power device, a cooling device and a control device, wherein the conveyer belt comprises a feeding conveyer belt, multilayer first indoor conveyer belts and multilayer second indoor conveyer belts;the cooling chamber adopts a lateral cuboid structure with an opening in one horizontal end; the feeding transmission belt is arranged at the upper part of the top of the cooling chamber; the first indoor conveyer belts and the second indoor conveyer belts are longitudinally arranged in the cooling chamber at intervals, and are opposite in transporting directions; and the conveyer belt comprisesthe feeding conveyer belt, the first indoor conveyer belts and the second indoor conveyer belts, which are arranged at the end part in the horizontal direction in a left and right crisscross manner. The bean sheet jelly primary pulp transporting and cooling system disclosed by the invention has the advantages of being good in quality of obtained bean sheet jelly, high in efficiency, high in automation degree, low in labor intensity of workers and low in floor space.