75results about How to "Keep still" patented technology

The invention belongs to the field of machines, and relates to a two-freedom-degree micro type flexible hinge vibration attenuation platform and vibration attenuation method. According to the platform, a central body (vibration attenuation platform body) is arranged in a square frame shell, the peripheral faces, arranged at the upper end or the lower end of the square frame shell, of the central body are respectively provided with a flexible thin plate, the flexible thin plates are connected and extend towards one side along the face, the other ends of the flexible thin plates are connected with one face of the square frame shell, one face of the square frame shell is connected with the perpendicular connecting faces of the flexible thin plates of the central body, a perpendicular motor and a horizontal motor are fixedly connected with a horizontal frame and a perpendicular frame respectively, when external disturbance enables the central body to move, reverse-direction pushing force of the motors is controlled through a control algorithm, the pushing force enables springs and a perpendicular pushing head to move in the reverse direction, meanwhile, the perpendicular pushing head ejects the central body to push in the reverse direction, and the central body is kept static.

The invention relates to a injection device, comprising a housing being adapted to receive in its proximal housing portion a container with an injection fluid and to receive in its distal housing portion a dose setting and injection mechanism, wherein the mechanism includes a piston rod (28) being axially displaceable with respect to the housing for dispensing injection fluid from the container, wherein the piston rod (28) has an outer thread (34) and is arranged torque proof with respect to the housing, dose setting means comprising a threaded element, which threaded element has an inner thread being in engagement with the outer thread (34) of the piston rod (28), is designed so that its axial position relative to the housing is changeable and is rotatable relative to the piston rod (28) and relative to the housing during setting of an injection dose, wherein the dose setting means are designed such that the threaded element is held in torque proof manner relative to the piston rod (28) and to the housing during the injection of the beforehand set injection dose in such a manner that the threaded element and the piston rod (28) are axially displaceable together with respect to the housing, wherein the mechanism (26) further comprises holding means (60; 160) being in contact with the piston rod (28) and being designed such that the axial displacement of the piston rod (28) can be substantially immobilized during use of the device except for the dispensing of the injection dose. It is proposed according to the invention that the holding means (60; 160) are axially fixed with respect to the housing.

The invention discloses a real-time video image stabilization method based on timing grid flow superimposing. The real-time video image stabilization method comprises the steps that 1, each obtained video frame is down-sampled to the fixed size; 2, the first frame is taken as an initial reference frame, and a reference frame feature point is acquired; 3, video frame feature points are extracted and matched with the reference frame feature point, the optimal matched feature point of the video frame feature points is obtained, and a global homography matrix is constructed; 4, a part of the videoframe feature points are removed by means of the global homography matrix; 5, grids are distributed to the video frames, and motion vectors of grid vertexes are obtained according to the video framefeature points; 6, the reference frame changes in cycles, and motion vectors of the grid vertexes in each cycle are obtained by adopting a time domain superimposing method according to the reference frame of the cycle; and 7, motion vectors of pixels are calculated according to the motion vectors of the grid vertexes, and the pixels are adjusted according to the motion vectors of the pixels. According to the method, a lens is kept to be completely static in the overall video sequence.

The invention discloses a fixed-length welding method of a connection port of a blower shell. The fixed-length welding method comprises the following steps: a, mounting a flat pushing device; b, mounting a sliding device; c, mounting a fixed-length adjustment device; d, adjusting a distance between two clamp plates; e, mounting first material plates; f, welding a second material plate between thefirst material plates; and g, coating protective paint. According to the fixed-length welding method disclosed by the invention, a distance between the inner side surfaces of the two clamp plates canbe adjusted, so that the distance between the inner side surfaces of the two clamp plates is external width of the connecting port of the blower shell, and the size of the connecting port of the blower shell is strictly controlled, and thus, deviation between the size of the connecting port of the blower shell and an opening of the blower shell is reduced; moreover, the arranged positions of the two clamp plates are not changed in a welding process, and the connecting port of each blower shell is not needed to be positioned again; and through mutual cooperation of a positioning device, the clamp plates and a limiting fixation device, positioning of the connecting port of the blower shell is carried out, and therefore, the fixed-length welding method disclosed by the invention has the advantages of high manufacturing efficiency and low manufacturing cost, and is suitable for batch production.

The invention discloses a laser gyro based double-dynamic-target tracking guiding method. The method comprises the following steps that 1) a target GPS coordinate TG in a dynamic platform, a real-timeGPS coordinate AG of a tracking system, the real time attitude (alpha, beta, gamma) of the platform, and the initial attitude (alpha0, beta0, gamma0) are obtained in real time; 2) an earth-fixed coordinate of a target is transformed into a coordinate of a movement platform of the target; 3) a calibration horizon system and an axial system of the tracking system are converted to determine a transformation relation between axial system of the tracking system and the horizon system of the tracking system is obtained, and further a conversion angle from the horizontal system to the axial system of the tracking system is obtained; and 4) each inertial laser gyro is fixedly mounted in a random position of the platform, the tracking system is mounted on the platform, and the zero point of an encoder is not adjusted any more after installation. Only once calibration is needed, and the tracking system can be used directly in dynamic platform application later if the relative installation position is not changed any more, and a double-dynamic-target tracking guiding algorithm is reached to meet the requirements of dynamic target tracking guiding in the dynamic platform.

The invention discloses a high-pressure big-thrust two-position three-way ball valve structure, which comprises a valve bush, wherein a left steel ball seat, a pushing pin seat, a right steel ball seat and an armature are arranged in the valve bush; the outer side of the armature is provided with a solenoid coil used for controlling the action of the armature; the armature is connected with a mandril; the end part of the mandril is connected with the right end of a right steel ball; the right steel ball is positioned in a through hole of the right steel ball seat; the left end of the right steel ball is connected with the right end of a pushing pin; the pushing pin is installed on the pushing pin seat; the left end of the pushing pin is connected with a left steel ball; the left steel ball is positioned in the left steel ball seat; the inner cavity of the valve bush is provided with a left boss and a right boss; the left steel ball seat is positioned in the left boss, and the left steel ball and the left boss are in mutual large interference fit; the right steel ball is positioned in the right boss, and the right steel ball and the right boss are in mutual large interference fit. The invention provides the high-oil-pressure big-thrust two-position three-way ball valve structure which can effectively keep a ball valve set stationary and also has high frequency response and large flow under the conditions of high oil pressure and big thrust.

The invention discloses a detachable monitoring dome camera, which relates to the technical field of monitoring devices and solves a problem of inconvenience in mounting and detaching of the existingdome cameras. The detachable monitoring dome camera comprises a protective cover and a camera head in the protective cover, an upper part of the protective cover is sleeved with an outer cover of which a top end is provided with a mounting hole, a mounting tube with an internal thread is arranged on the mounting hole, an external wall of the protective cover is sleeved with a ring-shaped guide groove, a bottom end of the outer cover is provided with a plurality of through holes, a support rod is arranged in the through hole, one end of the support rod is provided with an idler wheel cooperating with the ring-shaped guide groove, the other end of the support rod stretches out the outer cover via the through holes, a limit fixing mechanism cooperating with the tail end of the support rod isarranged on the external wall of the outer cover, mounting and detaching can be convenient through cooperation of the internal thread and an upright tube with an external thread, meanwhile, stretchingout and drawing back of the support rod are realized by cooperation of the support rod and the limit fixing mechanism, the protective cover and the outer cover can be separated and detached, and overhauling for the camera is facilitated further.

The invention provides an analog source testing system of a rotation base-line interferometer positioning system and an application method of the analog source testing system. The analog source testing system comprises a radiation source generating module, a signal sampling data generating module, a high-capacity storage module and a radio frequency module B, wherein the radiation source generating module generates space-fed pulse description word data according to set data duration and signal features and outputs the space-fed pulse description word data to the signal sampling data generating module, and the signal sampling data generating module generates a space-fed signal and transmits the space-fed signal to the high-capacity storage module; the radio frequency module B reads the space-fed signal to generate a radio frequency signal and transmits the radio frequency signal into the detecting antenna of the positioning system through an antenna in a space-fed manner. By the analog source testing system, the wireless space-fed positioning testing signal can be simulated.

The invention relates to a highway bridge construction supervision reinforcing steel bar spacing detection device, and relates to the technical field of construction supervision auxiliary tools. The highway bridge construction supervision reinforcing steel bar spacing detection device comprises two lantern rings, a measuring mechanism is arranged between the two lantern rings, the lantern rings are used for being detachably connected to reinforcing steel bars, the lantern rings are used for rotating on the reinforcing steel bars, and the measuring mechanism is used for measuring the spacing between the two lantern rings. The measuring mechanism comprises a frame body, a rod body and a sliding block. The sliding block is connected to the frame body in a sliding mode, the sliding direction of the sliding block is the length direction of the frame body, the rod body is connected to the sliding block, the frame body is parallel to the length direction of the rod body, one end of the frame body is connected with a lantern ring, and a limiting mechanism is arranged on the measuring mechanism and used for enabling the sliding block to slide in one direction. The device has the effect of improving the accuracy of measuring the distance between the steel bars.

The invention relates to a permanent magnet motor technology, and aims to provide an electric vehicle integrated charger based on double three-phase motors and a control method thereof. A dual three-phase open winding permanent magnet motor is adopted, two ends of a stator winding are opened and led out of a stator shell, and the stator winding is respectively connected with an alternating current input power supply and a motor converter through a mode switch; the mode switch reconstructs a winding of the dual three-phase open-winding permanent magnet motor to serve as an electric vehicle charging circuit inductor, so that a motor rotor is kept static during charging; the motor winding is multiplexed as an alternating current side filter inductor during the charging period, and forms a rectifying circuit together with the motor converter. According to the invention, flexible switching between the charging state and the driving state can be realized, and the hardware cost of the electric vehicle is saved; the reconstruction mode is based on original hardware conditions, the scheme is simple, and the universality is high. Compared with the traditional voltage outer loop-current inner loop current feedforward decoupling control, the current dynamic response is fast; and circuit parameters are not used in control operation, so that the system robustness is good.

The invention relates to a minimally invasive surgical robot comprising a main operating table and a slave operating device. The main operating table is configured to send a control command to the slave operating device according to an operation of a doctor to control the slave operating device, and the slave operating device is configured to respond to the control command sent by the main operating table to perform corresponding operations. The slave operating device includes a mechanical arm, a power mechanism disposed on the mechanical arm and an operating arm disposed on the power mechanism. The mechanical arm is used for adjusting the position of the operating arm, the power mechanism is used for driving the operating arm to execute corresponding operations, and the operating arm is used for extending into the body and performing a surgical operation. The operating arm includes an end instrument, a connecting component and a first driving unit. The end instrument is provided witha spiral groove and rotatably connected with the far end of the connecting component, the connecting component is used for adjusting the posture and position of the end instrument, the far end of thefirst driving unit is accommodated in the spiral groove, so as to drive the end instrument to rotate substantially in the axial direction of the first driving unit.

The invention relates to a surgical robot. The surgical robot comprises a main operation platform and secondary operation equipment, the main operation platform is used for sending a control command to the secondary operation equipment according to the operation of a doctor so as to control the secondary operation equipment, and the secondary operation equipment is used for responding the controlcommand sent from the main operation platform and conducting a corresponding operation and comprises a mechanical arm, a power mechanism arranged on the mechanical arm and an operation arm arranged onthe power mechanism; the mechanical arm is used for adjusting the position of the operation arm, the power mechanism is used for driving the operation arm to execute a corresponding operation, and the operation arm is used for extending into the body for executing surgical operations; the operation arm comprises a tail end apparatus, a connecting assembly and a first driving unit, the tail end apparatus is rotatably connected with the far end of the connecting assembly, the connecting assembly is used for adjusting the posture and position of the tail end apparatus, and the far end of the first driving unit is connected with the tail end apparatus and drives the tail end apparatus to rotate in the axial direction of the first driving unit basically relative to the connecting assembly.

The invention provides a waterproof lock used for an electric equipment cabinet and belongs to the field of locks for electric equipment cabinets. The waterproof lock comprises a key, a lock cylindershaft, a flat gasket sealing ring, a lock sleeve, a nut, a plastic flange and a fixed screw. The parts are connected and coordinate to form multiple sealing layers, moisture can be blocked from entering the interior of an electric equipment cabinet from a gap of a lock, and accumulation of condensed water is not formed, so that the aim of protecting electrical elements inside the equipment cabinetis achieved. The waterproof lock provided by the invention has the advantages of good waterproof performance, reasonable structure and low manufacturing cost.

The invention relates to a device for detecting initial rotor position of a PMSM (permanent-magnet synchronous motor). The device comprises an initial position detection digital computation module, adriving circuit, a three-phase inverter module, the PMSM and a current sensor and sampling circuit, wherein the driving circuit receives signals of the initial position detection digital computation module 1 and generates IGBT driving signals; the three-phase inverter module controls IGBTs of upper and lower bridge arms of each phase to be switched on and switched off according to the driving signals generated by the driving circuit; a three-phase stator of the PMSM is connected with the three-phase inverter module; the current sensor and sampling circuit acquires currents ia, ib and ic of thea, b and c three-phase stator of the PMSM. Influence of salient rate and saturation characteristic of a motor, precision of a current sensor and zero drift of a current sampling device on positioningaccuracy is reduced greatly, and the precision for detecting the initial rotor position is improved effectively.

The invention relates to a surgical robot. The surgical robot is characterized by comprising a master operating station and slave operating equipment, wherein the master operating station is configured to send a control command to the slave operating equipment according to the operation of a doctor to control the slave operating equipment; the slave operating equipment responds to the control commands sent by the master operating station and performs corresponding operations; the slave operating equipment comprises: a mechanical arm, a power mechanism arranged on the mechanical arm, and an operating arm arranged on the power mechanism; the mechanical arm is used to adjust the position of the operating arm, the power mechanism is used to drive the operating arm to perform corresponding operations, and the operating arm is used to extend into a body and perform the surgical operations; the operating arm comprises an end instrument, a connecting assembly and a rotary driving wire; the end instrument is rotationally connected with the far end of the connecting assembly; the connecting assembly is used to adjust the posture and position of the end instrument; and the rotary driving wire is wound on the end instrument and used to connect a driving mechanism to drive the end instrument to rotate relative to the connecting assembly.

The invention provides a method for detecting the initial position of a magnetic pole of a rotor of a built-in permanent magnetic synchronous motor, belongs to the field of motor control, and solves the problems of over-complicated processing, easy occurrence of polarity misjudging, poor practicality and the like existing in the conventional method based on high-frequency signal injection for detecting the initial position of the rotor. The method comprises the following steps: constantly maintaining the stationary state of the rotor; injecting a rotating high-frequency voltage signal into a stator winding; detecting three-phase stator current and converting the three-phase stator current into two-phase static coordinates; acquiring an error signal capable of reflecting position information of the magnetic pole of the rotor through signal processing; adjusting the error signal by using a PI tracker so as to acquire an initial judging value of the position of the magnetic pole of the rotor; and injecting two impulse voltage vectors in opposite directions into the stator winding, comparing values of direct axis current components by detecting the three phase current and converting the rotating coordinates so as to determine the polarity of the magnetic pole, and finally acquiring the initial position angle of the magnetic pole of the rotor of the built-in permanent magnetic synchronous motor.

The invention relates to the related technical field of cosmetics, and discloses labeling equipment for transmitting cosmetic bottles by utilizing the gravity principle. The labeling equipment comprises a lower bin, and a supporting plate is fixedly connected to the upper portion of the lower bin. Conical wheels rotate to enable labels to be laid step by step, a labeling device extrudes the laid labels, the labels are prevented from being bonded together, the labels can be tightly attached to the cosmetic bottles, a second moving rod moves upwards to push the cosmetic bottles out of a device table, manual transfer is avoided, and the working efficiency is improved. The containing table moves downwards to cause rightward movement of a first moving rod to hinder rotation of a stop rod and pause rotation of a third connecting rod, so that the situation that a push block pushes the cosmetic bottles out of the containing table in the labeling process of the labeling device is avoided, smooth labeling work is guaranteed, the motion state of the first connecting rod is not affected by a second connecting rod all the time, the second connecting rod can rotate along with the first connecting rod and can also keep static, the relevance between the structures is increased, the two hands are liberated, and the operation is more convenient.

The invention discloses a storage and classification integrated device for urological medical equipment. The device comprises a base, a first cabinet body, a second cabinet body, a third cabinet bodyand a fourth cabinet body; four lifting platforms are installed on the periphery of the top of the base, and the first first cabinet body, the second cabinet body, the third cabinet body and the fourth cabinet body are arranged on the tops of the lifting platforms in sequence; the first cabinet body is used for storing urological medical electrical equipment and accessories, the second cabinet body is used for storing urological medical surgical equipment, the third cabinet body is used for storing drainage bag or a urine bag or other bag urological medical necessities, the fourth cabinet bodyis used for storing disposable injection products. The urological medical equipment is separately storage in the cabinet bodies according to different types, the cabinet bodies form the integrated device, and distinguishing and arranging of the types are guaranteed; meanwhile, when receiving and using are conducted, the equipment can be obtained through the integrated device, and classified storing is conducted in the same space.

A device (10) for the in situ non-destructive testing of parts of a turbomachine engine, comprising a stem (12) supporting, at its far end, a pivoting finger (14) which has, at one of its ends, a blade (16) for supporting a test probe (18) and, at its opposite end, a shoe (20) for bearing on and / or attachment to a component of the engine, this shoe being able to move in a direction (30) parallel to the longitudinal axis of the finger.

The invention discloses a waiting mechanism for upper and lower stations. The waiting mechanism comprises a driving mechanism, a transmission mechanism, an axial deformation mechanism and a station connecting mechanism which are connected in sequence, wherein the axial deformation mechanism or the station connecting mechanism is provided with upper and lower limiting mechanisms. According to the waiting mechanism, a motor is not required to stop rotating during the upper and lower stations, so that energy is saved, and the working efficiency is improved.

The invention discloses a multilateral bending center die with self-locking and automatic disassembly and assembly functions. The multilateral bending center die comprises an upper die body, a self-locking mechanism and a pressing mechanism; the upper die body is detachably installed at the bottom of a cross beam in the bending center, the height of the cross beam can be increased and decreased, and an inverted-U-shaped groove is formed in the bottom of the cross beam and provided with a first side leg and a second side leg; a tenon is arranged at the top of the upper die body, extends into the inverted-U-shaped groove, and is in close fit with the inner wall surface of the first side leg; the self-locking mechanism comprises a fixed inclined block and a locking block; the fixed inclined block is located in the portion, between the tenon and the second side leg, of the inverted-U-shaped groove; the fixed inclined block is provided with a self-locking inclined face; the inclination angle of the self-locking inclined face is alpha, and alpha is smaller than arctan (mu), specifically, mu is the friction coefficient of the self-locking inclined face; and the locking block can be driven by the pressing mechanism to stretch into the inverted-U-shaped groove, so that the tenon is locked in the inverted-U-shaped groove. The self-locking mechanism and the pressing mechanism are adopted, so that double self-locking is achieved, and safety and reliability are achieved.

The invention discloses a destructive detection device for the strength of a building sample block. The left side of the upper part of an equipment rack is fixedly connected with a retainer, a screw rod is arranged below the retainer, and the lower part of the screw rod is connected with the upper part of an output shaft through a synchronous belt; the screw rod is in threaded connection with a threaded sleeve which is fixedly connected with one side of the upper part of a movable rod, the other side of the upper part of the movable rod is fixedly connected with a limiting ring which is sleeved with a guide rod, and the lower end of the movable rod is fixedly connected with a steel chisel; and the lower part of the output shaft is fixedly connected with a gear, the gear is meshed with a rack plate, and the rack plate is fixed on the side wall of a working table. The device simultaneously drives the screw rod and the gear to rotate in the same direction through the output shaft, whereinthe rotating screw rod drives the threaded sleeve and the movable rod to move downwards under the action of the limiting ring so as to drive the steel chisel to move downwards for destruction, the rotating gear drives the working table to move leftward to push a sample block, and the sample block is kept still when the steel chisel is damaged and taken out under the action of a telescopic rod, aspring and a stop lever, thus ensuring the accuracy of an experiment.

The invention relates to a circuit arrangement. A circuit arrangement is configured to supply an electromagnetic holding brake (B) of an electric motor (M) with an operating voltage (UB) for releasing the holding brake (B), and a voltage that is reduced relative to the operating voltage for holding the holding brake (B) in the released position. In comparison with the prior art the circuit arrangement is characterized in that the operating voltage (UB) is supplied from a control device (S) disposed separately from the electric motor (M) and the holding brake (B). The circuit arrangement is disposed in or on the electric motor (M) or in or on the holding brake (B) and includes a voltage regulator adapted to regulate, independently of the operating voltage (UB), the reduced voltage to a fixed value after the holding brake (B) is released.

The invention discloses an excess material cutting mechanism for a curtain piece knitting machine, which comprises a cutter used for cutting excess straws and a cutter bracket. The mechanism also comprises a fixed supporting plate, a fixed supporting rod, a bracket connecting rod, a bracket, a roller and other parts, wherein one fixed supporting plate and the roller are attached to the front surface and the rear surface of a straw mat respectively; and the straw mat is arranged between the fixed supporting plate and the roller. When the straw mat drives downwards, the fixed supporting plate behind the straw mat and the roller in front of the straw mat act on the surfaces of the straw mat simultaneously to keep the stability of the straw mat in motion and keep the cutter on the bracket stationary and move upwards relative to the excess straws at the edges of the straw mat, so that the excess straws are cut. As the structures of the roller and the fixed supporting plates are adopted, the cutting mechanism is more compact and the cutting motion of the straw mat is more stable.

The invention discloses a new energy automobile electric energy automatic supply device based on the Internet of Vehicles technology, and belongs to the technical field of new energy automobile electric energy automatic supply. The new energy automobile electric energy automatic supply device comprises a bottom plate, a battery bearing plate, a disassembly and assembly driving assembly and a transfer driving assembly. The problem that in the process of replacing the batteries in an existing battery replacing station, the batteries without electricity are unloaded firstly, then the batteries without electricity are dragged out of an operation area, then the batteries without electricity are unloaded, the batteries with electricity are further loaded to an operation platform and then dragged into the operation area to be loaded, and consequently the battery replacing efficiency is low is effectively solved.

The invention discloses clothes processing equipment comprising a base arranged at the bottom of the equipment. The base comprises a moving mechanism for moving the equipment and allows the equipmentto move under action of an external force. Users can move the clothes processing equipment stably according to service conditions.