46results about How to "Guaranteed coupling" patented technology

The invention provides an exoskeleton mixed control system and method for a lower limb walking assisting machine. The system comprises a track generation module and the like. A master controller module comprises a high impedance controller module and a self-adaptation control module. The track generation module generates lower limb exoskeleton joint track information and guides the lower limb exoskeleton joint track information into the master controller module. A position and speed feedback module collects position and speed information of joints of exoskeletons and feeds back the position and speed information to the master controller module. An FSR circuit module detects the contact force information of soles and the ground through FSR pressure sensors installed at the soles of the exoskeletons and sends the information to a controller decision module in the form of voltage. The controller decision module judges whether the leg swinging period exists or the standing period exists according to the voltage information and sends the judgment result to a 51 single chip microcomputer module. The exoskeleton mixed control system and method are feasible, and the control effect and user experience of the machine exoskeleton system can be improved through mixed bottom layer controllers.

The invention provides an ultrasonic vibration device for coaxial ultrasonic-assisted laser shot peening. The ultrasonic vibration device mainly comprises a vibration rod, an amplitude-change pole, piezoelectric ceramic, first optical glass and second optical glass, wherein through holes are formed in the centers of the vibration rod and the amplitude-change pole in the axial direction; the lowerend of the vibration rod is fixedly connected with the upper end of the amplitude-change pole; the first optical glass is positioned at the top of the vibration rod; the second optical glass is positioned at the bottom of the amplitude-change pole; the upper end of the vibration rod extends out of the upper surface of an upper shell and is fixedly connected with the upper surface of the upper shell; the piezoelectric ceramic is arranged on the vibration rod. According to the ultrasonic vibration device, after the piezoelectric ceramic is electrified, electric energy is converted into mechanical energy to generate ultrasonic waves, and amplification of mechanical vibration amplitude is achieved through the amplitude-change pole. The through holes formed in the centers of the vibration rod and the amplitude-change pole in the axial direction provide a propagation channel for laser, and coaxial propagation of ultrasonic vibration waves and laser shock waves is achieved. Coupling of the ultrasonic vibration waves and the laser shock waves in the propagation process is ensured, the dynamic recrystallization behavior of a material is promoted, and a metal part with an ultrafine grain surface is prepared.

The invention relates to an optical dispersive compensator which is based on a double-ring shaped resonant cavity structure sleeved with each other, and the invention is characterized in that the dispersive compensator is composed of an input waveguide (1), a coupling waveguide (2), an output waveguide (3), a fixed annular waveguide (4) and an adjustable annular waveguide (5). The adjustable annular waveguide is characterized in that two annular waveguides which are sleeved with each other are arranged in the same plane, and are arranged adjacently. The distance between the two waveguides is no more than one wavelength. The waveguide is made of material with refractive index can be adjusted. Each part of waveguide in a filter structure is single-mode waveguide, and the refractive index of the adjustable annular waveguide can be adjusted through changing the exterior condition of the adjustable annular waveguide, thereby the dispersive compensating range is adjusted. When the resonant frequency of the adjustable annular waveguide is similar with that of the fixed annular waveguide, so the resonance of the two waveguides is realized, and the dispersive compensating range of the dispersive compensator is greatly improved. The invention has the advantages of simple realization, convenient operation, easy integration and large range of dispersive compensating range. The invention can be applied to optical communicating system.

The device (27) can be housed coaxially inside a sleeve (25) in which the supplies are situated, and comprises:

• • a hollow cylindrical body (30) that fits inside the sleeve and accepts the mechanism (22) in the housing of the hollow body, with passages (33, 34, 36) for respectively connecting the supplies to said mechanism (22); and
  • a cover (31) which is integrated or fixed, removably, on the front side of the cylindrical body and connects the hidden supplies to the respective passages of the body.

The invention belongs to the technical field of printed board design, and provides a dual-orientation electrical bridge. The dual-orientation electrical bridge is characterized in that the dual-orientation electrical bridge comprises a printed board, a coaxial cable, a magnetic core, a plurality of resistors, a capacitor C1 and a capacitor C2, wherein the coaxial cable is placed on the printed board, the magnetic core is sleeved on the magnetic core, the resistors are evenly distributed at the two ends of the coaxial cable, the capacitor C1 is arranged at a first end of the coaxial cable, and the capacitor C2 is arranged at a second end of the coaxial cable. Due to the fact that electric bridge balance is constructed, the dual-orientation electrical bridge has high directivity within a 40 kHz-3 GHz frequency band, is achieved through the dual-orientation electrical bridge, and has the advantages of being simple in structure and high in producibility.

The invention provides a flexible microwave directional coupler with a controllable coupling degree. The problems that an existing coupler cannot realize flexibility, and the coupling degree is not easy and inconvenient to adjust and control are mainly solved. The flexible microwave directional coupler comprises a flexible dielectric plate (6) and a conductor layer (5) etched on the dielectric plate; the conductor layer comprises a feed structure (51), a mode conversion structure (52), a connecting structure (53) and a coupling structure (54); the dielectric plate adopts a flexible dielectricmaterial as a substrate of the coupler, so that the flexible characteristic is achieved; the mode conversion structure is used for completing conversion of transmission modes, and better impedance matching is achieved; the connecting structure is constituted by a pair of curved artificial surface plasmon transmission lines, and thus dependence of transmission of electromagnetic energy on a metal floor is avoided; and the coupling structure is constituted by a pair of mutually-parallel artificial surface plasmon transmission lines and used for realizing parallel coupling. According to the flexible microwave directional coupler, the coupling degree of the coupler is increased, flexible adjusting and control of the coupling degree are achieved, and the flexible microwave directional coupler can be applied to a radio frequency microwave circuit system.

The invention provides a high-sensitivity uniaxial MEMS (micro-electro-mechanical-system) gyroscope. The high-sensitivity uniaxial MEMS gyroscope comprises driving mass blocks, driving components andCoriolis force mass blocks, and a first direction, a second direction and a third direction which perpendicular to one another are limited; the driving mass blocks are arranged to move in the first direction; the driving components are connected with the driving mass blocks and the Coriolis force mass blocks through elastic structures respectively; the driving mass blocks drive the driving components to move when moving in the first direction, and further, the driving components drive the Coriolis force mass blocks to move in the second direction; and the driving components and the Coriolis force mass blocks are connected, so that the Coriolis force mass blocks are suitable for moving only in the third direction under the action of Coriolis force.

The invention relates to a carriage for a separation element, a separation element and a device. The carriage provided to hold a displaceable separation element comprises a carriage body provided with at least two running wheels, which carriage body is connected to a carrier profile, which serves to carry the separation element. According to the invention the threaded shank of an adjusting screw is rotationally held in the carriage body, which adjusting screw comprises below the screw head a flange ring, which supports a flange element provided in the carrier profile, which flange element comprises an opening, through which the screw head is guided. By rotating the adjusting screw the carrier profile can thus be optionally adjusted in height. In a preferred embodiment a tool channel is provided in the carrier profile, into which tool channel a conventional tool can be introduced. The carriage is mounted on the displaceable separation element on the front end of the cabinet main body. The invention also discloses a device for mounting a slide rail and a guide rail in the requirement of the minimum cost and the minimum space. The invention also discloss a stop buffer mounted in the requirement of the minimum cost and the minimum space.

The invention discloses communication equipment and a coupler thereof. The coupler comprises a PCB, a coupling sheet and a metal cover, the coupling sheet is arranged on a first surface of the PCB, a second surface of the PCB is provided with a first groove, the projection of the coupling sheet on the PCB is partially overlapped with the first groove, and the metal cover is arranged on the first groove. The first groove is formed in the PCB, and the projection of the coupling sheet on the PCB is partially overlapped with the first groove, so that the structure of the coupler is changed, and the directivity of the coupler is improved.

The invention relates to the technical field of ground stress monitoring, in particular to a stress-strain sensor hole wall coupling device. The hole wall coupling device of the stress-strain sensor comprises a base, a shell, a piston, a filler and a sealing film, the base is arranged at one end of the shell; the shell is cylindrical, the piston and the filler are arranged in the shell, and a connector is arranged at the end, away from the filler, of the piston; a first discharge port is formed in the end, close to the base, of the shell, and the sealing film is arranged at the first discharge port and used for blocking the first discharge port. The embodiment of the invention has the beneficial effects that the filler is extruded by the piston to be discharged from the first discharge port of the shell and then distributed between the shell and the hole wall, and a perfect circular drill hole can be obtained after the filler is filled and solidified, so that the coupling of the sensor and the hole wall can be ensured, and the normal contact of the sensor and the hole wall is further ensured; and the accuracy of ground stress monitoring is improved.

The invention provides an elliptical wellbore design method adapting to deep ground stress. The method comprises determining an opening position of an elliptical wellbore and the elliptical wellbore depth h; detecting all ground stress at the ground from the elliptical wellbore to the position with the depth h and determining maximum ground stress delta1 and minimum ground stress delta2; determining the long axis direction of the elliptical wellbore according to the direction of the maximum ground stress delta1; calculating and determining elliptical wellbore parameters according to the maximum ground stress delta1 and the minimum ground stress delta2. According to the method, the ground stress at the elliptical wellbore position can be detected, and the elliptical wellbore parameters aredetermined by selecting the maximum ground stress and the minimum ground stress to ensure that the ground stress and the elliptical wellbore generate a coupling relationship, and the elliptical wellbore can effectively overcome the ground stress during use.