30results about How to "Precise rotation control" patented technology

An orthodontic bracket is described and which includes a bracket body having an arch wire slot formed therein; and a movable gate which slideably cooperates with the bracket body, and is moveable between a first, open position, to a second, closed position, and wherein the gate is designed so as to minimize the frictional engagement of the arch wire by the gate as the gate is moved from the first open position to the second closed position.

The inventions described in this patent application include i) a torqueable introducer sheath which is useable in conjunction with a transvascular passageway forming catheter to effect precise rotational control of the catheter; ii) an anchorable guide catheter which is useable in conjunction with an intravascular imaging catheter and a transvascular passageway-forming catheter to effect precise positioning and aiming of the passageway-forming catheter; iii) a passageway forming catheter having a torqueable proximal portion to facilitate precise rotational positioning of the distal portion of the catheter; iv) a deflectable-tipped passageway forming catheter, v) various markers and other apparatus useable in conjunction with any of the passageway-forming catheters to facilitate precise positioning and aiming of the catheter, and vi) an apparatus which may be formed within a catheter to prevent a member, apparatus of flow of material from being inadvertently advanced through a lumen of the catheter.

According to an aspect of the present invention, there is provided a power tool including: a motor; a driving circuit that supplies an electric power from a power supply to the motor; a control part that sets a target rotation number for the motor in accordance with a mode selected from a plurality of modes, each mode having a corresponding target rotation number; and a voltage detecting circuit that detects a voltage of the power supply, wherein the target rotation number is varied based on the detected voltage.

The invention relates to the technical field of an electric switching driving device for a sample valve for chromatography, and belongs to an electric switching device for the sample valve for chromatography. The electric switching device for the sample valve for the chromatography comprises an installing seat body, the sample valve the chromatography, a step motor, a photoelectric switch, a rotating shaft, a light shielding sheet, a step motor driver and a controller, wherein the sample valve for chromatography is fixedly arranged at the upper end of the installing seat body, the step motor is fixedly arranged at the lower end of the installing seat body, a power output shaft arranged at the upper end of the step motor is in transmission connection with a valve rod arranged at the lower end of the sample valve for chromatography through the rotating shaft, and the rotating shaft is sheathed in the installing seat body. The electric switching device for the sample valve for chromatography has the advantages that the structure is reasonable and compact, the use is convenient, the step motor is controlled to rotate by the controller, in addition, the valve rod of the sample valve for chromatography is driven to rotate through the rotating shaft, and the air path switching is realized; the goals of automatic control and fast switching are achieved; meanwhile, the driving rotating angle of the step motor can be regulated through changing the parameters of the controller and the position of the photoelectric switch, the precise rotating control is realized on the sample valve for chromatography with different rotating angles, and the applicability is high.

The invention belongs to the field of microwave technology, in particular to a rapidly controllable polarizer for a high-power electron cyclotron resonance heating system. The invention includes a microwave reversing waveguide, a mounting substrate, a polarizing mirror, a polarizing mirror rotating mechanism and a rotating driving mechanism; the microwave reversing elbow is used to transmit high-power microwaves to realize 90-degree reversing of the microwave transmission direction; the mounting substrate is used for Position the polarizing mirror and its rotation and driving mechanism on the microwave reversing elbow; the polarizing mirror is used to reflect the microwave and realize the change of the microwave polarization form when it rotates; the polarizing mirror rotating mechanism is used to realize the vacuum environment The rotation of the lower polarization mirror; the rotation drive mechanism is used to realize the precise positioning control and protection of the rotation of the polarization mirror; the invention has high positioning accuracy, remote fast controllability, stable and efficient transmission of MW level long pulse millimeter waves, and can meet The electronic gyrosystem requires arbitrary control of the microwave polarization form.

The embodiment of the present application discloses a screen display state control method and related products, wherein the screen display state control method includes: obtaining the screen rotation request initiated by the target application program; determining the process state of the target application program; State handles screen rotation requests. The embodiment of the present application processes the screen rotation request initiated by the target application by determining the process status of the target application, reducing the memory consumption when responding to the screen rotation request, and reducing the memory consumption caused by responding to the screen rotation request of the non-foreground target application. The impact of the foreground application.

The present invention discloses a robot control method, a system and a warehouse handling robot, involving the field of robot control. The method includes: the chassis controller receives the information synchronization instructions sent by the main controller; The chassis controller and the rotary controller synchronize information through the information synchronization instruction; The chassis controller sends synchronous rotation instructions to the rotation controller, and controls the chassis motor to drive the robot chassis to rotate at a predetermined angular velocity to the ground; The rotary controller controls the rotary motor according to the synchronous rotation command to drive the robot rotation mechanism to rotate synchronously relative to the angular speed of the robot chassis rotation. The present invention implements a precise control of the rotation of the warehouse handling robot, which in turn enables the robot chassis to rotate, reducing the rotational shaking of the shelves.

The embodiment of the present application discloses a method and device for rotating a moving object, a control device, and a storage medium. The method for rotating an object includes: projecting a first object onto a target plane to obtain a first projection; obtaining a first vector based on the first projection and target orientation; projecting the orientation vector of the first object onto the A target plane to obtain a second vector; based on the first vector and the second vector, control the rotation of the first object along a target axis perpendicular to the target plane.

The invention discloses a novel smart code-scanning mechanism, and belongs to the technical field of logistics. The mechanism comprises a code-scanning execution module, a package clamping module, and a package detection module, wherein the code-scanning execution module comprises a base, a sliding chute, a bearing, a lead screw, a code scanner, a round disc, a motor, a shaft coupler and a computer; the sliding chute is formed on the base, the lead screw is fixedly connected with the base through the bearing, the round disc is in threaded connection with the lead screw, a sliding rod is fixedly connected with the round disc, the sliding rod is matched with the sliding chute, the code scanner is connected with the round disc, the motor is connected with the lead screw of the shaft coupler, the motor is connected with the computer, and the computer is connected with the package detection module; the package detection module is matched with the package clamping module so as to precisely control the fluctuation distance of the code scanner, the packages with different sizes and the packages with unfixed bar code positions can be precisely scanned, so that the device is highly automatic and intelligent.

The invention relates to the technical field of an electric switching driving device for a sample valve for chromatography, and belongs to an electric switching device for the sample valve for chromatography. The electric switching device for the sample valve for the chromatography comprises an installing seat body, the sample valve the chromatography, a step motor, a photoelectric switch, a rotating shaft, a light shielding sheet, a step motor driver and a controller, wherein the sample valve for chromatography is fixedly arranged at the upper end of the installing seat body, the step motor is fixedly arranged at the lower end of the installing seat body, a power output shaft arranged at the upper end of the step motor is in transmission connection with a valve rod arranged at the lower end of the sample valve for chromatography through the rotating shaft, and the rotating shaft is sheathed in the installing seat body. The electric switching device for the sample valve for chromatography has the advantages that the structure is reasonable and compact, the use is convenient, the step motor is controlled to rotate by the controller, in addition, the valve rod of the sample valve for chromatography is driven to rotate through the rotating shaft, and the air path switching is realized; the goals of automatic control and fast switching are achieved; meanwhile, the driving rotating angle of the step motor can be regulated through changing the parameters of the controller and the position of the photoelectric switch, the precise rotating control is realized on the sample valve for chromatography with different rotating angles, and the applicability is high.

The invention discloses a flexible combined welding assembly line which can be used for welding all directions of a workpiece and randomly increasing or deleting a welding station according to production requirements, and has a simple structure and low manufacturing cost. The flexible combined welding assembly line comprises a conveying mechanism and a plurality of follow fixtures which are operated in the conveying mechanism and are used for clamping the workpiece; the conveying mechanism comprises a front end module, a plurality of middle modules and a tail end module which are detachably connected together, two forward direction conveying chains which penetrate through all the modules and are arranged in parallel, and two returning conveying chains which are located under the two forward direction conveying chains and are arranged in parallel; the conveying mechanism is provided with one or more of a deflection-free welding device, an overturning welding device and a rotary welding device according to welding production requirements; one or more welding devices with each type can be arranged according to the production requirements.

The invention discloses a magnetic suspension universal momentum sphere device and a realizing method thereof. The magnetic suspension universal momentum sphere device comprises a momentum sphere, a position control electromagnetic system, a rotation control electromagnetic system, a sphere body state detection system and a central control system, wherein the momentum sphere is used for rotation, the position control electromagnetic system is used for generating a magnetic force in any direction for the momentum sphere, the rotation control electromagnetic system is used for generating a rotating torque capable of rotating towards any direction for the momentum sphere, the sphere body state detection system is used for detecting the operation state of the momentum sphere and the central control system is used for controlling the electromagnetic system and the sphere body state detection system and receiving operation state data of the momentum sphere, detected by the sphere body state detection system. The momentum sphere is adopted for replacing a momentum wheel, therefore the magnetic suspension universal momentum sphere device is capable of realizing rotation in any direction; the rotating torque enabling the sphere body to rotate is generated through a rotating magnetic field, therefore, the magnetic suspension universal momentum sphere device realizes non-contact, non-resistance and accurate rotation control; and the sphere body is magnetically suspended through the magnetic force, therefore the friction force is thoroughly eliminated.

The invention discloses a multi-degree-of-freedom quadruped soft robot, comprising: 4 pneumatic legs distributed at four corners, wherein the 4 pneumatic legs are arranged in parallel to form 2 rows of pneumatic legs, each row of pneumatic legs The legs are vertically connected by the rotating shaft to form a "concave" shape. The two rotating shafts are arranged in parallel and connected by the moving control part. The moving control part includes the steering gear base and the steering gear; the two rotating shafts pass through the sides of the steering gear base respectively. The steering gear is installed in the cavity in the middle of the steering gear seat, and a rotatable steering wheel is arranged in the middle of the steering gear; the two rotating shafts also pass through the first flange, and the two first flanges and The steering wheel is on the same plane. In the present invention, through the combined drive of the steering gear pull rope and pneumatic, each leg of the robot can be bent in all directions, and the robot body can also be unfolded and closed.

A prism rotation adjustment mechanism, a photolithographic exposure system and a photolithography tool are disclosed. The prism rotation adjustment mechanism includes a frame (200), a flexible mechanism (100) and an actuation mechanism. The flexible mechanism (100) includes a fixing component (110), an actuating component (120), a connecting component (130) and a swinging component (140) that are flexibly articulated in a sequence. The fixing component (110) is fixed to the frame (200). The actuation mechanism is fixed to the frame (200) and coupled to the actuating component (120). On the swinging component (140) are secured a prism wherein an axis of articulation between the swinging component (140) and the fixing component (110) is in correspondence with a rotational center of the prism. The flexible mechanism of the prism rotation adjustment mechanism is a quadrilateral flexibly-articulated assembly, in which, when driven by the actuation mechanism, the actuating component can convert translational movement into rotational movement, allowing the control of the rotational movement to be more accurate and hence improving the rotational control accuracy of the prisms. Moreover, the axis of articulation between the swinging component and the fixing component provides a stable axis for the prisms to rotate thereabout, avoiding crosstalk during the rotation and hence additionally improving the prism rotation control accuracy.

A prism rotation adjustment mechanism, a photolithographic exposure system and a photolithography tool are disclosed. The prism rotation adjustment mechanism includes a frame (200), a flexible mechanism (100) and an actuation mechanism. The flexible mechanism (100) includes a fixing component (110), an actuating component (120), a connecting component (130) and a swinging component (140) that are flexibly articulated in a sequence. The fixing component (110) is fixed to the frame (200). The actuation mechanism is fixed to the frame (200) and coupled to the actuating component (120). On the swinging component (140) are secured a prism wherein an axis of articulation between the swinging component (140) and the fixing component (110) is in correspondence with a rotational center of the prism. The flexible mechanism of the prism rotation adjustment mechanism is a quadrilateral flexibly-articulated assembly, in which, when driven by the actuation mechanism, the actuating component can convert translational movement into rotational movement, allowing the control of the rotational movement to be more accurate and hence improving the rotational control accuracy of the prisms. Moreover, the axis of articulation between the swinging component and the fixing component provides a stable axis for the prisms to rotate thereabout, avoiding crosstalk during the rotation and hence additionally improving the prism rotation control accuracy.