1820 results about "Linear drive" patented technology

Angular rate sensor for detecting rotation about first, second and third mutually perpendicular input axes having a plurality of generally planar proof masses coupled together for linear drive-mode oscillation along multi-directional drive axes in a plane formed by the first and second input axes. The masses are mounted on a generally planar sense frame for linear movements relative to the sense frame in drive-mode and for rotation together with the sense frame in sense modes. The sense frame is mounted for rotation with the masses in sense modes about the first, second, and third input axes independent of each other, in response to Coriolis forces produced by rotation of the masses about the first, second, and third input axes respectively. And capacitance sensors responsive to the rotational movements of the masses and the sense frame in sense modes are employed for monitoring rate of rotation.

A micro capsule robot comprises a body unit; a body movement control unit, which is installed on an outer circumferential surface of the body unit, including a linear driving device, and wings which are unfolded from the outer circumferential surface of the body unit by operation of the linear driving device for delaying or stopping the movement of the body unit; and a controlling unit installed in the body unit for controlling the body movement delay unit.

The present invention provides for exemplary embodiments of a single-insertion, multiple sampling biopsy device. Exemplary embodiments of a single-insertion, multiple sampling device with integrated marker release.

It is an object of the present invention to provide a power tool having a further improved vibration reducing performance. The representative power tool may comprise a tool bit, an actuating mechanism, a dynamic vibration reducer. The actuating mechanism drives the tool bit linearly by means of pressure fluctuations so as to cause the tool bit to perform a predetermined operation. The dynamic vibration reducer has a weight that reciprocates under a biasing force of an elastic element to reduce vibration of the actuating mechanism. The weight may be driven by means of pressure fluctuations caused in the actuating mechanism. According to the invention, the weight of the dynamic vibration reducer can be actively driven by pressure fluctuations in the actuating mechanism for driving the tool bit. Therefore, regardless of the magnitude of vibration acting on the power tool, the dynamic vibration reducer can be forcedly and steadily operated.

An apparatus for opening and closing a deck lid of a vehicle body includes a jack-screw type drive unit having two elongated relatively rotatable drive elements which are threadably engaged for controlled bi-directional displacement. An electric motor engages the rotatable drive element. A first mounting device pivotally connects the rotatable drive element to a relatively fixed point on the vehicle. A second mounting device pivotally connects the non-rotatable drive element to the deck lid, or vice versa. The motor is energized to affect bi-directional control of the drive unit while enabling low back-drive effort. A concentric spring counters loading due to the weight of the deck lid.

In a reciprocal linear driving actuator used as a drive source of a power toothbrush, two permanent magnets are formed substantially disc shape or substantially tubular shape, and fitted to and fixed on a shaft directly or via a spacer with a predetermined distance in axial direction of the shaft, so that a moving object is constituted by the shaft and the permanent magnets. On the other hand, a tubular shaped stator, which is constituted by a coil wound around a bobbin and stationary yokes and so on, is provided to face side faces of the permanent magnets of the moving object via a predetermined clearance so that a center axis thereof becomes coaxial with the center axis of the shaft. By supplying alternating current to the coil, the moving object is driven reciprocally and linearly in the axial direction of the shaft.

The invention relates to a transporting apparatus for transporting products, which includes a linear drive mechanism, a continuous conveyor system, having two parallel straight conveyor regions and two curved conveyor regions each connecting one end of the straight conveyor regions, and a plurality of conveyor elements. The conveyor elements extend along the continuous conveyor system and convey the products to be conveyed along at least a portion of the conveyor system while being guided along a guide path. The linear drive mechanism includes a first linear segment and a second linear segment, which are disposed parallel to the straight conveyor regions. The curved conveyor regions of the conveyor system are advantageously embodied as driveless.

A stereoscopic imaging system for generating stereoscopic images includes a pair of cameras juxtaposed with each other in a horizontal plane each capturing a stream of video images. A controller is provided for controlling motion of each camera, determining presence of a vertical parallax between the images from each camera and converting such first and second video signal into said stereoscopic image of such object. A drive apparatus is provided for linearly moving one camera and for rotating the other camera in response to at least one control signal received from the controller thereby correcting for determined vertical parallax presence. The novel drive apparatus includes an electrically powered linear drive mechanism for moving the first camera and an electrically powered motor and gear arrangement for rotating the second camera. The images are analyzed in a generally real-time manner and image capture and generation is not blocked during analysis.

The invention relates to an automatic gait appliance for the rehabilitation of lower extremity, which comprises an upper leg component and a lower leg component. Two ends of an U-shaped shelf is hinged on the upper leg component and the upper leg component is hinged on the lower leg component; the U-shaped shelf and two upper leg components are hinged on two ends of electrical linear driver, and an encoder is arranged on the hinge point; the upper leg component and the lower leg component are hinged on two ends of the other electrical linear driver, and the encoder is arranged on the hinged point. In the practice period, the patient wears the lower extremity exoskeleton gait appliance to guide the movement of the leg of the patient. The invention has the advantages that the angle joint and the size of the moment are real-timely measured by the sensor; the practice efficiency of the patient is measured and evaluated easily; the best rehabilitation plan is drew up for improving the efficiency of the rehabilitation.

Several methods are disclosed for the generation of coherent short-wavelength electromagnetic radiation through optical nonlinear frequency mixing means. The invention involves several stages of efficient nonlinear frequency conversion to shift the output of high-power infra-red fiber-lasers into the vacuum ultraviolet (VUV). The described laser source architecture is designed around non-critically phase-matched (NCPM) sum-frequency mixing (SFM) interactions in the nonlinear crystal CLBO. The NCPM interaction is an optimum condition for bulk frequency conversion of cw radiation because it allows tight focusing of the input laser radiation without Poynting vector walk-off, thereby increasing the non-linear drive significantly. The sub-200-nm output wave is generated from SFM of a long-wave IR laser field and a short-wave UV laser field. The long-wave laser beam may be derived directly from a rare-earth-doped fiber laser, whereas the short-wavelength UV beam is provided as the fourth frequency harmonic of a second rare-earth-doped fiber laser system.

The invention provides a mask aligner mask platform adopting the magnetic suspension technology. The mask aligner mask platform mainly comprises a precision slideway, a base, a suspension and the like, wherein the inside of the suspension is provided with an electromagnet which combines with a vortex displacement sensor to realize that the suspension is suspended above the slideway stably; the stator of a linear electric motor is fixed on the base, the rotor of the linear electric motor is fixed on the suspension; and the slideway surface is provided with a linear scale which combines with a linear scale reading-head arranged on the suspension to realize the precise and linear positioning motion of the suspension. The magnetic suspension mask aligner mask platform provided by the invention utilizes electromagnetic attraction and electromagnetic linear drive to ensure that the mask aligner mask platform can perform precise and fast reciprocating linear positioning motion, realize the functions of ultra-clean, high-speed, long-distance and precise positioning motion and the like which can not be realized by using the traditional scheme using a rotary servo motor for drive, a precision ball lead screw for transmission and a slideguide for support, and have higher suspension stiffness and better load-bearing characteristic than the gas phase suspension mask aligner mask platform.

A miniature air gap inspection crawler. The miniature air gap inspection crawler may include a base, a linear drive mechanism and a circumferential drive mechanism such that either the linear drive mechanism or the circumferential drive mechanism may be employed, and an inspection module connected to the base.

Apparatus for aspirating liquid from a container, e.g., a test tube, having a puncturable stopper includes a pair of stepper motors that share a common linear actuator or drive member. One motor operates to axially advance the linear drive member (preferably a lead screw) to a position in which it serves to position a rigidly connected tube-detector/stripper member in engagement with the top of a stopper on a tube. Thereafter, the second motor operates to move along the surface of the same drive member to advance an aspiration probe through the engaged stopper and into a liquid aspirating position within the tube. Preferably, a linear guide rail, slidably-mounted on a frame that supports the liquid-aspirating apparatus, serves to guide both the movement of the aspiration probe and the linear drive member. As a result of the shared components, the apparatus is highly precise and reliable.

The invention discloses a leakage circuit, a leakage current control method and an LED (Light Emitting Diode) control circuit. The scheme provided by the invention can be applied to a linear driving scheme; threshold voltage is a zero-crossing value; when input voltage is zero-crossing, load current is zero; leakage current is generated so that input current is greater than maintaining current of a controllable silicon light modulator, and conduction of the controllable silicon light modulator is maintained; second time is used as delaying time so that power consumption is reduced; and under the condition of guaranteeing a light modulation effect, the leakage current is reduced and the system efficiency and the system reliability are improved.

A multi-foot moving device based on a combination driving mechanism is formed by a machine body (1) and a plurality of combination driving leg structures (2). The combination driving leg structures (2) are mounted on the machine body (1), and each combination driving leg structure (2) comprises a base (5), a main driving motor (6), a motor base (7), a coupling (8), a crank rotating shaft (9), a crank (10), a crank connecting rod rotating shaft (11), a transmission connecting rod (12), a rocker rotating shaft (13), a gear case rotating shaft (14), a linear driving unit (15), a rocker (16), a rocker small leg rotating shaft (17), a small leg unit (18), a connecting rod-screw rod nut sleeve rotating shaft (19) and a connecting rod small leg rotating shaft (20). The multi-foot moving device based on the combination driving mechanism achieves fast and efficient gait swing, and further achieves efficient walking and running of the moving device; meanwhile, flexible control is achieved, and the adaptability of the moving device to hillsides, grass lands, hollows and the like is further achieved.

Drive system for moving a load along a curved path. The drive system includes a base for mounting the drive system, the base having a curved track for guiding the load along the curved path. There is a load engaging mechanism mounted on the base for movement relative to the base, the load engaging mechanism being for moving the load. The load engaging mechanism has a curved track engaging roller for engaging the curved track. A linear drive mechanism including a linearly driven member is mounted on the base. The linearly driven member includes a driving pivot. A drive link is attached to the driving pivot at a drive force receiving end of the drive link, the drive link including a driven pivot at a drive force communicating end of the drive link. The driven pivot is attached to the load engaging mechanism, whereby linear motion of the driving pivot causes motion of the load along the curved path.

An adjustable experimental platform with 3,4,5-SPS type parallel mechanism for robot, machine-tool, or sensing element is disclosed. 3,4 or 5 linear drive branches are distributed between upper platform and base in polygonaly symmetrical mode. One of 4 or 5 linear drive braches is arranged in the center of platform and base. The both ends of each branch have a ball set consisting of the rotation set A formed by connecting one end of said branch with ring frame, the rotation set B formed by connecting ring frame with supporter, and the rotation set C formed by connecting supporter with axle sleeve. The vertical and transverse pins are used to change the freedom of ball set.

The invention provides an electromagnetic clamping mechanism which comprises an electromagnet, a permanent magnet and a deformable body. The permanent magnet is arranged on a magnetic link of the electromagnet, a control magnetic circuit is formed between the permanent magnet and the electromagnet, the permanent magnet moves relative to the electromagnet under the drive of the magnetic field of the control magnetic circuit, the deformable body is driven to deform, and then clamping locking and releasing are achieved. The invention further provides a linear driving device and combination with the electromagnetic clamping mechanism. According to the electromagnetic clamping mechanism and the linear driving device and combination with the electromagnetic clamping mechanism, due to the fact that magnetic poles of the permanent magnet and the electromagnet make contact with each other or are close to each other, the functions of large driving force, large displacement, high-precision driving and power off clamping keeping are formed, existing electric and magnetostrictive drive material application equipment and instruments are improved, and the electromagnetic clamping mechanism and the linear driving device and combination with the electromagnetic clamping mechanism can be widely applied in the field of drivers (actuators), brakes, sensors, motors, vibration and control equipment, robots, precision manufacturing, biomedical engineering and the like.

The invention provides a completely-decoupled three-rotating three-moving six-freedom-degree parallel-serial mechanism. A machine base of the parallel-serial mechanism is connected with a first middle platform through three branches of the same structure, each branch is composed of four movement pairs which are a linear drive movement pair, a rotating pair, a linear movement pair or rotating pair and an universal hinge or rotating pair. The first middle platform and a second middle platform are connected through the rotating pairs. The second middle platform is connected with a movable platform through an RPS branch, a PSPR branch, a PS branch and an SPS branch. Decoupling of three-moving of the mechanism is achieved through the connection part between the machine base and the first middle platform, the rotating pairs between the first middle platform and the second middle platform achieve one-rotating of the mechanism, and decoupling of two-rotating of the mechanism is achieved through the connection part between the second middle platform and the movable platform. The whole mechanism can achieve six-freedom-degree complete decoupling and can serve as a mechanical body of a top-grade numerically-controlled machine tool.

The invention relates to an electromechanical linear drive, in particular for an injection moulding machine, comprising an electric motor with a hollow-shaft rotor, open on one side, with a subsequent screw gear which converts the rotational movement of the hollow-shaft rotor into a linear movement. The hollow-shaft rotor is supported on the motor housing, at the end thereof closed by a end wall, such as to rotate, by means of a central bearing spigot projecting axially from the end wall. According to the invention, an extremely stable-running, exactly central and fail-safe rotor bearing may be achieved with a simple construction and in an economical manner, whereby the bearing spigot is supported on the motor housing such as to rotate by means of at least two axially pre-tensioned, counter-rotating, individual bearings, separated in the longitudinal direction and supporting longitudinal and transverse forces and, in the region of the open rotor end, an emergency running safety device for an eccentric rotor displacement is provided.

The present invention is a wafer engine for transporting wafers. The wafer engine includes a linear drive for moving the wafer along an x axis, a rotational drive for rotating the wafer about a theta axis, a linear drive for moving the wafer along a z axis, and a linear drive for moving the wafer along a radial axis. The linear drive for moving the wafer along a z axis is offset from the rotational drive. When the rotational drive rotates about the theta axis, both the z axis and radial axis drives are also rotated about the theta axis. Preferably, the linear drive for moving the wafer along a radial axis is a dual or rapid swap slide body mechanism having an upper and lower end effector. The slide body mechanism preferably also has means to align the wafer and perform various inspection and marking procedures.

The invention discloses a six-degree-of-freedom parallel posture adjustment and vibration isolation platform containing tower-shaped telescopic branches. The six-degree-of-freedom parallel posture adjustment and vibration isolation platform mainly comprises a base, three mounting seats, six linear driving units with the same structure, three tower-shaped telescopic branches with the same structure, three vibration isolators, a power-assisted spring and a movable platform, wherein the three mounting seats are arranged on the base; each mounting seat is fixedly connected with two linear driving units; each of the tower-shaped telescopic branches consists of two closed-loop connection rods and a planar shear fork mechanism; two tower legs at the lower end of the planar shear fork mechanism of each tower-shaped telescopic branch are respectively connected with sliding blocks of two adjacent linear driving units through ball hinges, and the upper end of the tower-shaped telescopic branch is a rotation pair connected with the two closed-loop connection rods; the rotating shaft of the rotating pair is connected with one end of the vibration isolator through a universal hinge; the other end of the vibration isolator is fixedly connected with the movable platform; the lower end of the power-assisted spring is fixedly connected to the base, and the upper end of the power-assisted spring is a free end. The six-degree-of-freedom parallel posture adjustment and vibration isolation platform occupies a small volume and is high in rigidity and high in bearing capacity and large in working space.

The invention discloses a wearable rehabilitation glove and a method. The problem that an existing rehabilitation glove has a single function is solved. The wearable rehabilitation glove has the advantages that the glove conforms to different actions of various fingers, and control of different force magnitudes over different fingers can be controlled. According to the scheme, the wearable rehabilitation glove comprises a soft glove body, the soft glove body comprises a palm region and at least one fingerstall region, the interiors of the fingerstalls are used for containing the fingers of a person, at least one first fingerstall ring is arranged on one side of each fingerstall region, the palm region is provided with at least one second fingerstall ring similarly, one end of a connecting rope and the top inside the fingerstall regions are fixed, after the connecting rope sequentially penetrates through the first fingerstall rings and the second fingerstall rings at the same fingerstall region, and the other end of the connecting rope is connected with a linear driving mechanism; the other side of each fingerstall region is provided with a pneumatic muscle, and the pneumatic muscles are connected with a pneumatic muscle air pipe.

Systems and methods sense out-of-plane linear accelerations. In an exemplary embodiment, the out-of plane linear accelerometer is accelerated in an out-of-plane direction, wherein the acceleration generates a rotational torque to an unbalanced proof mass. A rebalancing force is applied to at least one plurality of interleaved rotor comb tines and stator comb tines, wherein the rebalancing force opposes the rotational torque, wherein the rotor comb tines are disposed at an end of the unbalanced proof mass, and wherein the stator comb tines are disposed on a stator adjacent to the end of the unbalanced proof mass. An amount of acceleration is then determined based upon the applied rebalancing force.

A wafer handling robot (100) is disclosed for transporting workpieces. The robot includes a base (102) comprising a rigid backbone (112) for providing stability to the robot. The base further includes a mast (116), a linear drive system (122) for translating the mast, and a shoulder drive system (120) for rotating the mast. The shoulder drive system includes a harmonic drive reduction system (138) for providing output rotation of the mast for rotation with the mast, and a distal link (106) rotatably mounted to the proximal link. An end effector (108) for supporting workpieces is rotationally mounted to the distal end of the distal link. An elbow drive (150) is mounted to the proximal link, extending down into the mast section, for driving rotation of the distal link with respect to the proximal link.

The invention discloses a POS machine magnetic head test method and POS machine card swiping test equipment. The POS machine magnetic head test method includes the steps that a magnetic card special for test is swiped in a POS machine magnetic head card slot in a reciprocating mode, a POS machine sends magnetic card information read every time to an upper computer, the upper computer compares the received magnetic card information with presorted standard information, correct information is marked as successful card swiping, and incorrect information is marked as unsuccessful card swiping. According to the POS machine magnetic head test method, the card is swiped in the reciprocating mode in the test process, and therefore the card swiping speed is increased; a test working mode is set is in the POS machine, induction of a magnetic head is continuously detected, and therefore test efficiency is improved; the upper computer special for test is adopted, test results are stored in a list form, and therefore test centralized management of the POS machine is easy to achieve. According to the test equipment, a mechanical chuck is utilized to clamp the test magnetic card, card swiping power is provided by a linear drive mechanism, automatic card swiping test is achieved, the card swiping speed is increased, labor is saved, and cost is reduced.

A drive arrangement is provided for motorized pivotal movement of a vehicle door. The drive has a self-locking motor unit, a gear connected downstream of the motor unit for producing linear drive movement, and a clutch connected therebetween. The clutch can be moved into an engaged state in which the motor unit for nominal operation is engaged to the vehicle door. When the motor unit is turned off, manual movement of the vehicle door is blocked. The clutch can be moved into a released state in which the motor unit is separated from the vehicle door in terms of drive engineering. The clutch can be moved into the intermediate engaged state with reduced transmission moment and force so that the vehicle door is kept in its current position at any time by self-locking of the motor unit, but can be moved by manual actuation with a minimum actuation force.

The invention relates to a performance testing device of a static-pressure air bearing, which at least comprises a base (1), a film pressure sensor (2), a pressure regulating valve (3), an air intake tube (4), an air pressure gauge (5), a static-pressure air bearing (6) to be tested, a press plate (7), a bearing fixing component (8), a bearing connecting component (9), a linear driver connecting component (10), a limit bolt (11), a linear driver (12), a rack (13), a bracket (14), a force sensor (15), a displacement sensor (16), a driven gear (17), a driving gear (18), a driving motor (19) and a rotating encoder (20). The invention can test the bearing capacity and rigidity of the static-pressure air bearing under different air supply pressures and different air film thicknesses and the air pressure change in the bearing, thereby facilitating the performance testing of the static-pressure air bearing and the optimization of structural parameters of the bearing.

A percussive mechanism, which is provided in the form of an, e.g. pneumatic spring percussive mechanism, comprises an electrodynamic linear drive, a drive piston, which can be reciprocally moved inside a percussive mechanism housing by the linear drive, and a percussive piston. An additional hollow space is provided in front of and/or behind the drive piston and can be isolated at least in part from the surrounding area so that a pneumatic spring can be created in the additional hollow space. The pneumatic spring slows the drive piston at its returning points and facilitates a returning motion without loading the electrodynamic linear drive.

The invention discloses a dynamic linear control light emitting diode (LED) driver circuit which comprises a rectifier module, a sampling module, a feedback module, a constant-current control module, a constant-current driver module. The rectifier module is used for converting input mains supply signals to linear driving voltage signals which are output to an LED load. The sampling module is used for acquiring driving current which flows through the LED load. The feedback module is used for acquiring the linear driving voltage signals. The constant-current control module is used for generating constant current adjusting signals according to the driving current and generating constant current control signals according to the linear driving voltage signals. The constant-current driver module is used for controlling current of the load to be constant current according to the constant current adjusting signals and the constant current control signals. According to the dynamic linear control LED driver circuit, a conducting mode and a non-conducting mode of a power switch can be chosen according to the magnitude of linear voltage of the LED load, and therefore the linear LED driving efficiency can be greatly improved. More specially, when input voltage is low and the LED load is in a high-working-efficiency mode, the constant-current control module enables the power switch to be in the conducting mode, and therefore a constant current output state of an LED is guaranteed; and when the input voltage is high and the LED load is in a low-working-efficiency mode, the constant-current control module enables the power switch to be shut down forcibly.