34results about How to "High speed positioning" patented technology

The invention relates to the technical field of precision machining, and provides an ultraprecise positioning table and a three-section combined type positioning method which combines coarse positioning, precise positioning and ultraprecise positioning, wherein a computer vision positioning method is adopted for coarse positioning; the positioning table largely drives a coarse positioning mechanism to move in a larger working stroke scope to quickly complete coarse positioning; a coarse grating positioning method is adopted for precise positioning; then a computer judges position deviation according to the size and polarity of mole signals generated by coarse grating and drives the coarse positioning mechanism to move at a quicker speed to complete precise positioning; a fine grating positioning method is adopted for ultraprecise positioning; a piezoceramics micrometric displacement driver is adopted so as to guarantee higher positioning precision. As the three-section combined type positioning method is adopted and positioning combined with large-step quick drive and precise drive is used, the ultraprecise positioning table can realize high-precision positioning in a larger working stroke; meanwhile, the positioning time can be greatly shortened; therefore, high speed positioning is realized.

A motor control system suppresses vibration of a machine base and achieves high-speed positioning without using a special sensor but using a model control system. A first feedback section outputs a first feedback command generated based on model machine base position information and containing at least position information on the machine base. A second feedback section outputs a second feedback command containing a filtered model torque command. A differential between the sum of the first feedback command and the second feedback command obtained by a second addition section and the model torque command is calculated to give the differential to an input portion of a model torque command low-pass filter and an input portion of a torque command low-pass filter. The model control system gives a model position command to a position controller as a position command, and model machine base position information generated based on the model position command is added to a speed command input from the position controller to a speed controller.

A magnetic recording and reading device having a transfer rate of not less than 50 MB/s includes a magnetic recording medium having an absolute value of normalized noise coefficient per recording density of not more than 2.5×10⁻⁸ (μVrms)(inch) (μm)^0.5/(μVpp), and magnetic head which is mounted on an integrated circuit suspension so that a total inductance is reduced to be not more than 65nH and having a magnetic core which is not more than 35 μm of length, wherein a part of the magnetic core being formed by a magnetic film having a resistivity exceeding at least 50 μΩcm or by a multilayer film consisting of a magnetic film and an insulating film. The device also includes a fast R/W-IC having a line width of not more than 0.35 μm which is installed in a position within 2 cm from a rear end of the magnetic head.

Provided are a special-shaped glass remote control cutting, breaking and grinding integrated processing production line and an operation method thereof. The processes of cutting, edge breaking, edge grinding and the like are integrated to efficiently process all kinds of special-shaped glass in a fully automatic mode at a time, precision, stability and quickness are achieved, waste is treated by itself, and the performance of the whole machine is excellent. Operation is easy, use is safe and convenient, the rate of finished products reaches up to 99.96%, and production quality and efficiency are greatly improved. Energy saving and environment friendliness are achieved, production cost is reduced by 50%, and the requirements of the production processes and the need of a special-shaped glass deep processing production line for fast development and changes are met. The special-shaped glass remote control cutting, breaking and grinding integrated processing production line is composed of a glass GPS positioning and navigation system, a special-shaped glass remote control cutter, a special-shaped glass remote control edge breaking machine, a special-shaped glass remote control edge grinding machine, a glass remote control cleaning machine, a glass control conveying device, a sensing conveying device, a first servo motor, a first ball screw, a cutting linkage mechanical arm, an edge breaking linkage mechanical arm, an edge grinding linkage mechanical arm and the like.

A scanning mechanism that scans a scanning object with a light beam has light-collecting means for collecting the light beam that is emitted by a light source; driving means for driving the light-collecting means in a direction orthogonal to an optical axis of the light-collecting means; first reflecting means provided near a first aide of the scanning object, for reflecting the light beam collected by the light-collecting means to allow the light beam to be incident on the scanning object; and second reflecting means provided near a second side of the scanning object that is opposite to the first side of the scanning object, for reflecting the light beam collected by the light-collecting means to allow the light beats to be incident on the scanning object.

The invention provides a hydrogen circulating pump, and relates to the technical field of pumps. The hydrogen circulating pump comprises a shell assembly and a shafting assembly arranged in the shell assembly, the shafting assembly comprises an impeller and a rotor shaft, the impeller is provided with an assembly hole along the center line, multiple rotation stopping rotary grooves are formed in the circumferential direction of the assembly hole, rotation stopping rotary teeth corresponding to the rotation stopping rotary grooves are arranged on the outer circumferential face of the rotor shaft, and when the rotor shaft cooperates with the assembly hole, the rotation stopping rotary teeth cooperate with the corresponding rotation stopping rotary grooves, so that the rotor shaft and the impeller rotate synchronously. According to the hydrogen circulating pump, the rotation stopping rotary teeth cooperate with the corresponding rotation stopping rotary grooves, so that the assembly precision of the rotor shaft and the impeller is improved, meanwhile, the hydrogen circulating pump has better torque transmission capability, so that when the rotor shaft drives the impeller to rotate at a high speed, accurate positioning of high-speed rotation is realized, meanwhile, the operation stability is ensured, and then the working performance of the hydrogen circulating pump is improved.

The invention discloses a method and device thereof for shallow type drilling machine self-adaptive balance. The method for shallow type drilling machine self-adaptive balance comprises the steps thata laser rangefinder and an angular displacement sensor are utilized to acquire position information of a tunnel rock wall drilling working face in real time; based on the position information, through calculation of the deflection angle and elongation distance of a drilling arm, deflection of the center of gravity of a drilling machine is determined; and adjustable balance supporting devices on the left side and the right side of the drilling machine are pertinently controlled to rotate correspondingly, the supporting range is increased, and self-adaptive balance of the drilling machine in the working process is achieved. The device comprises the laser rangefinder, the angular displacement sensor, a supporting oil cylinder, a deflection oil cylinder, a supporting transverse beam, a central controller and an oil way control circulating system. The deflection oil cylinder does extending and contracting and rotary motions, and the supporting oil cylinder is driven to rotate correspondingly. According to the method and device thereof for shallow type drilling machine self-adaptive balance, working face signals detected are utilized to control changes of the supporting manner of the drilling machine so that the supporting manner can be adjusted self-adaptively by the supporting devices along with changes of the working face; real-time balanced location of the shallow type drillingmachine in a narrow and long tunnel is achieved; and the working range of the shallow type drilling machine is expanded.

The invention relates to a high-speed precise laser drilling platform and a control method thereof. The high-speed precise laser drilling platform comprises a macro XY motion platform, a micro XY motion platform and a working sucker, wherein the micro XY motion platform is arranged on the macro XY motion platform, the micro XY motion platform comprises a supporting base, a connecting frame, a micro-bearing platform, an X-axis flexible hinge piece and a Y-axis flexible hinge piece, the two ends of the X-axis flexible hinge piece are correspondingly fixed on the connecting frame and the supporting base, the two ends of the Y-axis flexible hinge piece are correspondingly fixed on the connecting frame and the micro-bearing platform, the micro-bearing platform is further provided with a micro X-axis encoder and a micro Y-axis encoder which are used for measuring the motion information of the micro-bearing platform in the X/Y direction respectively, and the working sucker is installed on the micro-bearing platform of the micro XY motion platform. According to the high-speed precise laser drilling platform and the control method thereof, high-speed interpolation is realized by means of elastic deformation of flexible hinges, and high-speed precise positioning among holes is realized.

A method for correcting the angle of a marine directional antenna in real time based on a single-chip microcomputer is characterized by comprising the steps: 1, conducting starting, and a single-chip microcomputer reading parameters in an ROM; 2, calculating a direction angle A1 of a current coordinate and a target coordinate, acquiring the current coordinate of the directional antenna by the single-chip microcomputer, and calculating the direction angle A1 according to the current coordinate of the directional antenna and the target coordinate; 3, calculating a current attitude angle A2, and calculating the current attitude angle A2 of the directional antenna by the single-chip microcomputer; 4, correcting the angle of the directional antenna, wherein the single-chip microcomputer corrects the angle of the antenna according to the direction angle A1 and the attitude angle A2; and 5, circulating, and entering the step 2. According to the method, the angle of a marine directional antenna is corrected in real time under the control of a single-chip microcomputer, so that the directional antenna is automatically aligned with a shore station base station antenna in real time.

The invention discloses an index method for data in data transmission service in campus grid, which provides an index mechanism in campus GridFTP under network environment and is convenient for the discovery of resources and the inquiry of the data. A system structure under the mechanism comprises a data transmission log, a monitor and an index server. The key point comprises that the relation among a resource server, the index server and a GridFTP server is established. A data resource list acquired after MDS and ganglia are integrated is shown in figure 5, a GridFTP site is established in the index server, and information of the data resource list is mapped into the GridFTP site to be convenient for the GridFTP server to inquire data resources.

The invention relates to the technical field of high-precision motion, in particular to a large-stroke flexible hinge platform. The large-stroke flexible hinge platform comprises a supporting base, aconnecting frame, a micro bearing platform, an X-axis flexible hinge sheet and a Y-axis flexible hinge sheet, wherein the two ends of the X-axis flexible hinge sheet are separately fixed onto the connecting frame and the supporting base; the two ends of the Y-axis flexible hinge sheet are separately fixed onto the connecting frame and the micro bearing platform; and rigidity of the flexible hingesheet can be regulated by regulating a clamping position, so that matching of variable working conditions is realized. The large-stroke flexible hinge platform utilizes a rigidity-adjustable flexiblehinge to realize multi-axis dynamic characteristic coordination, and utilizes nonlinear elastic deformation of the flexible hinge to realize large-stroke high-speed interpolation, so that efficient processing is realized.

The invention provides a control method and a control device for a linear motor stage based on the NCTF control method, which are easy in process and controller adjustment without special knowledge about control theory, and can be positioned with high precision and high speed. When positioning on a linear motor stage with a movable worktable on the plate, the NCTF control using the nominal characteristic trajectory allows the worktable to follow the vibration from the plate and suppresses high-frequency vibration generated in a process of allowing the worktable to follow the vibration of the plate. The nominal characteristic trajectory is obtained from an open-loop experiment using the input signal to the linear motor stage. Feedforward control is added to NCTF control. The target is control that suppresses the influence of the stage on relative movement of the plate with respect to the worktable due to the vibration of the plate.