127results about How to "Small swing" patented technology

The invention discloses a ship stabilization crane. The ship stabilization crane comprises a crane body, a lifting hook with a stabilization disc, folding stabilization arms and a lifting cable. The crane body is installed on a ship body, the lifting hook is connected with a main motor of the crane body through the lifting cable; the crane body self carries a stabilization device; the stabilization disc is fixedly connected to the lifting hook; the folding stabilization arms are symmetrically fixedly connected on the two sides of a crane jib in a hinged mode and controlled through hydraulic cylinders to expand and draw back; and the folding stabilization arms are connected with three lifting lugs in the circumferential direction of the outer wall of the stabilization disc of the lifting hook in the way that three additionally installed stabilization hydraulic motors and rollers are matched with corresponding steel wire cables and guiding pulleys, swinging is reduced in the way that movement of the corresponding motors is controlled to pre-tighten a stabilization rope, and traction stabilization of a stereoscopic triangle can be directly achieved through installation of equal division of circumference of the three lifting lugs. The ship stabilization crane is novel in structure, convenient to machine and use and safe and reliable and prevent a lifting tool and goods from swinging.

The invention discloses a wet-type electrostatic dust collector cathode and anode configuration structure. The wet-type electrostatic dust collector cathode and anode configuration structure comprises a cathode and an anode, wherein the cathode is installed on a cathode framework, the anode is installed on an anode framework, and the anode is in a regular-hexagonal tubular shape; the cathode is a cathode with discharging pins, the discharging pins are distributed on the cathode in a layering manner, each layer is provided with three discharging pins, adjacent layers are staggered to form an angle of 60 degrees, and the inter-layer distance is 25mm to 100mm; the discharging pins are vertically connected to the cathode, and each discharging pin points to the regular-hexagonal tubular corner of the anode. By adopting the wet-type electrostatic dust collector cathode and anode configuration structure, the anode can uniformly and effectively trap electrons and charged pollutants; voltage corona inception and corona stability of the cathode can be reduced, the discharging position of the cathode can be set according to the anode form, the length of each cathode discharging pin can be set according to the medium condition, the discharge intensity can be adjusted according to the angle, and simplicity and easiness can be realized; moreover, a needlepoint-shaped discharge point does not have the problem that the discharging is suppressed by the coating of dust and gypsum in the wet smoke; the cathode-anode configuration structure can be adaptive to a wet-type dust collector, and the application is wide.

The disclosed electronic percussion instrument includes a plate-like pad that has a front surface to be struck, a sheet-like pressure sensor that is provided on a back surface of an outer circumferential end portion of the pad and that detects a pressure change, and a weight portion that contacts a front surface of the pressure sensor, wherein, due to striking on the front surface of the pad, an inertial force from the front surface of the pressure sensor toward a back surface of the pad acts on the weight portion, and the weight portion presses the pressure sensor.

The invention discloses a high-speed optical fiber ring network communication network control topology of a large-capacity power electronic system. The control topology comprises a main node, multiple slave nodes, an on-off machine network, a fault protective network, a synchronization network and a high-speed data communication network. The control topology is high in communication speed, simple in structure, good in synchronization effect, high in distributed modularization and high in reliability.

The invention relates to a storage structure and a single-end low-swing bit line writing circuit. The circuit comprises at least one storage unit and a driving circuit, wherein the driving circuit comprises a first phase inverter (I1), and the input end of the first phase inverter (I1) is used for writing data (D). The circuit is characterized in that the driving circuit also comprises a first P-channel metal oxide semiconductor (PMOS) transistor (P1), a second PMOS transistor (P2), a first N-channel metal oxide semiconductor (NMOS) transistor (N1) and a second NMOS transistor (N2), the writing circuit also comprises a feedback control circuit, the storage unit comprises a third PMOS transistor (P3), a fourth PMOS transistor (P4), a third NMOS transistor (N3), a fourth NMOS transistor (N4), a fifth NMOS transistor (N5) and a sixth NOMS transistor (N6). The assistance of additional reference voltage or power supply voltage is not needed for realizing the low-swing technology, and in addition, the single-end single-swing writing is supported through the improved storage unit.

The invention discloses a power generation system based on pressure constancy. The power generation system based on the pressure constancy comprises a high-pressure gas system, a gas-liquid mixing system, a hydraulic generator set, a channel switching system, a control system and a water flow compensation pressure circulation system, wherein the high-pressure gas system, the gas-liquid mixing system, the hydraulic generator set and the water flow compensation pressure circulation system are connected through the channel switching system, and are controlled through the control system. A water pump pumps water and compresses air in a variable-pipeline-characteristic down-conversion operation mode so that the water pump can operate near an efficient area all the time, the high efficiency is maintained, and electric energy consumed by water pumping of the water pump is reduced; a water turbine is stabilized near a rated water head in the power generation process so that the water turbine can operate near the highest efficiency area, and more electric energy is generated; and therefore, by consuming less electric energy, more electric energy is increased, so that the overall efficiencyfor converting power into power of the system is higher. The system has the functions of conventional compressed air energy storage and pumped storage power station large-scale electric energy storage, and has the characteristics of no dependence on terrain fall, high efficiency, long operation time and the like.

The invention provides an envelope tracking power supply with broadband output. The envelope tracking power supply comprises two paths of Buck converters, an AB-class linear amplifier and a control circuit, wherein the AB-class linear amplifier and the two paths of Buck converters are mutually connected in parallel; an output end of the AB-class linear amplifier is connected with a load in parallel; an output filter inductor of the first Buck converter is directly connected with an input end of the load; the output filter inductor of the second Buck converter is connected with a positive end of the output of the AB-class linear amplifier; the two paths of Buck converters and a negative end of the output of the AB-class linear amplifier are connected to the ground respectively; the control circuit comprises a logic gate circuit, two paths of current controllers and a third hysteresis comparator; each of the two paths of current controllers comprises a sampling circuit, an amplifying circuit and a hysteresis comparator; and the logic gate circuit comprises an AND gate and an NOT gate. The two paths of Buck converters are connected in parallel to provide a current to the load; the amplitude of oscillation of an output current of the linear amplifier is reduced; and the system efficiency is improved.

The invention discloses a fixed-wing unmanned aerial vehicle PID parameter control method based on an ant colony algorithm. The method comprises steps of setting ant colony search nodes, defining the value range of the PID controller parameters: the scale factor Kp, the integration time Ti and the derivative time Td by the empirical method, and setting the search nodes to an N* 3 search point matrix set of one parameter per line, where N is the number of random values within the range of values greater than 1; adding the pheromone evaporation mechanism to the ant colony optimization mechanism, and evaporating the pheromone on the optimal path of the ant colony search after each turn of iteration; and traversing the ant colony search nodes by using the ant colony optimization mechanism of pheromone evaporation to find the node satisfying the evaluation control performance index, wherein the evaluation control performance index is that the integral of the absolute error is the smallest. The method realizes the optimal PID parameter searching and setting of the fixed-wing unmanned aerial vehicle by using the improved ant colony algorithm, accelerates the searching process of the optimal solution, and is suitable for the multi-condition constrained type combinational optimization.

The invention discloses an anti-swing control method of an industrial crane. An encoder, a frequency converter and a swing preventing system are adopted to control the coordination work of all driving motors; a corner parameter, returned by the encoder, of a rotating shaft on an electric block is analyzed; the swing amplitude of a lifting object is analyzed; and the acceleration and the deceleration of large and small cars are synchronously controlled, so that the swing of the industrial crane in the lifting and transporting process is prevented. The method is simple in control, convenient to operate, small in crane swing amplitude and small in object lifting swing amplitude.

The invention provides a signal enhancing board as well as a signal enhancing system and method. The signal enhancing board comprises a PCIE signal interface unit, a signal pre-processing unit, a signal enhancing processing unit, a conversion and transmission unit and an SAS signal interface unit, wherein the PCIE signal interface unit is used for receiving a PCIE signal from an external mainboard; the signal pre-processing unit is used for removing a shake in the PCIE signal received by the PCIE signal interface unit, resetting output parameters through a dial switch and transmitting the processed PCIE signal to the signal enhancing processing unit; the signal enhancing processing unit is used for enhancing the amplitudes of a rising edge and a falling edge of the PCIE signal, reducing the oscillation amplitude of the PCIE signal and transmitting the processed PCIE signal to the conversion and transmission unit; the conversion and transmission unit are used for converting the received PCIE signal into an SAS signal and transmitting the SAS signal to the SAS signal interface unit; and the SAS signal interface unit is used for sending the received SAS signal to an external hard disk backboard. According to the signal enhancing board as well as the signal enhancing system and method, the PCIE signal between the mainboard and the hard disk backboard can be enhanced.

The invention provides a container loading, unloading and stockpiling system. A stereoscopic warehouse type container warehouse is provided in the system, a traditional open storage yard is replaced, and the number of storage yards of containers and the unit area utilization rate of a site are increased. A four-layer stepped transfer platform is further arranged on the two sides of the outer portion of the stereoscopic container warehouse, a trailer wagon capable of moving rapidly, roadway shuttle cars and satellite cars are arranged on the transfer platform, traditional unmanned container trucks or AGVs are replaced, the distance between quay cranes and storage yards is greatly shortened, and the loading and unloading efficiency is greatly improved. The multiple roadway shuttle cars and satellite cars are arranged in the stereoscopic container warehouse. Meanwhile, the invention further provides a control method. Under control of a central control room computer system, all mechanisms only conduct single-function operation and can be seamlessly connected and cooperatively work, any container can independently enter a stereoscopic goods shelf quickly without moving any other container, and operation of container overturning and dumping of a traditional storage yard is avoided.

The invention discloses an acoustic vibrating toothbrush which comprises a main body shell (10), wherein a front panel (13) and a rear panel (9) are respectively arranged on the front side and the rear side of the main body shell (10); a cap component (71) a base component (72) are respectively arranged at the top end and the bottom end of the main body shell (10); a movement component (5) is arranged in the inner cavity of the main body shell (10); a brush head (1) is connected to the movement component (5); and the brush head (1) runs through the cap component (71) from the inner cavity of the main body shell (10) and extends to the upper part of the main body shell (10). The acoustic vibrating toothbrush disclosed by the invention, by virtue of the movement component having a bending radian and the main body shell, can be used for weakening vibrating intensity transferred from a motor to a hand-held part, improving vibrating intensity and frequency from the motor to the brush head, avoiding a vibrating sense transferred to the held part and enhancing the comfort in the hand and teeth of a user; the acoustic vibrating toothbrush conforms to the kinesiology principle perfectly, and the toothbrush is efficient in cleaning and caring teeth, compact in structure, energy-saving and environment-friendly.

The invention relates to a power line vibration absorber which mainly comprises a vibration absorbing rod, sensing barrels and a connecting rod. The connecting rod rotatably sleeves a fixed rotating shaft which is mounted on a pole tower, one end of the connecting rod sleeves a cable in an annular fastening manner while the other end of the same is fixedly connected with the vibration absorbing rod which is made by a permanent magnetic material, a magnetic field of the permanent magnetic material is parallel to axis of the vibration absorbing rod, the vibration absorbing rod is perpendicular to a plane where the connecting rod and the cable are positioned, the sensing barrels are arranged at two ends of the vibration absorbing rod in a sleeved manner, the two ends of the vibration absorbing rod are not exposed out of the sensing barrels respectively, the vibration absorbing rod does not contact with each sensing barrel, and each sensing barrel is a cluster of coaxial closed coils and is fixedly mounted on the pole tower. The power line vibration absorber can effectively reduce vibration transmitted to the pole tower by the cable, so that loosening of screws of the pole tower is prevented effectively; wear between the cable and the pole tower is reduced, and service life of each of the cable and the pole tower is prolonged.

The present invention addresses the problem of providing a stent that can be designed to have a small mesh size without sacrificing diameter reducing properties and conformability to a curved shape, and is capable of preventing, when placed in a tubular organ, restenosis caused by intrusion of a tumor tissue into the lumen. The stent according to the present invention is configured from: a first weave structure (10) in which circumferential units (11-13) each comprising a plurality of circumferentially arranged mesh openings are disposed in the axial direction; and a second weave structure (20) in which circumferential units (21-23) each comprising a plurality of circumferentially arranged mesh openings are disposed in the axial direction to correspond to the circumferential units (11-13) of the first weave structure (10). The circumferential units of the second weave structure (20) are offset by 1/4 of the pitch in the circumferential direction relative to the corresponding circumferential units of the first weave structure, and interwoven with the corresponding circumferential units of the first weave structure. The second weave structure (20) is configured so that the bending part of one of each pair of adjacent circumferential units thereof is not interlocked with the bending part or wire intersection of the other circumferential unit.

The invention aims to provide an open type pitot tube pump which aims to solve a liquid leakage problem, caused by mechanical seal leakage, of the pump. The invention provides the pump, wherein a mechanical seal of the pump is arranged in an impeller rotor cavity, and the mechanical seal is permitted to have certain leakage amount (a leaked liquid being in the rotor cavity) while normal use of the pump is not affected. The open type pitot tube pump is characterized in that a pump shaft is arranged in a pump case through a bearing frame, wherein an impeller is fixedly arranged on the pump shaft by connecting; the impeller is provided with a hollow rotor cavity; a static pitot tube which is provided with a suction inlet, and communicates with an outlet of the pump is arranged in the impeller rotor cavity. One end of the pump case is provided with a pump suction inlet which communicates with the suction inlet in the impeller rotor cavity through a channel. The open type pitot tube pump is characterized in that a runner of the impeller rotor cavity is radial in the radial direction, wherein a runner of the pump suction inlet is concentric with the shaft; and the mechanical seal is arranged between the suction inlet in the impeller rotor cavity and the runner of the pump suction inlet.