15results about How to "Reduce angle error" patented technology

The invention relates to the technical field of precision reducer testing, and discloses an angle measurement error suppression system and method in a precision reducer dynamic test, and the system comprises a servo motor closed-loop regulation and control module, a measurement shafting motion state monitoring module, a piezoelectric ceramic driver regulation and control module, and a combined control module. The method comprises the steps that first-step regulation and control are conducted through the servo motor closed-loop regulation and control module, second-step regulation and control are conducted through the piezoelectric ceramic driver regulation and control module, and according to the running states, monitored in real time, of the high-speed-end motor and the low-speed-end motor and the motion state, monitored in real time, of the measuring shaft system, and in combination with a preset standard, the high-speed-end motor and the low-speed- The control proportion of the closed-loop regulation and control module of the servo motor and the piezoelectric ceramic driver regulation and control module is dynamically adjusted, so that the dynamic angle measurement error is kept within the preset range, and the angle measurement error caused by the dynamic change of the system structure in the speed reducer testing process can be effectively reduced.

The embodiment of the invention provides auxiliary mounting equipment and a debugging method, the auxiliary mounting equipment is used for mounting and debugging an off-axis parabolic mirror, and the auxiliary mounting equipment comprises a constraint diaphragm which is used for blocking edge light beams in incident light and only allowing a central light beam of the incident light to pass through; the angle measuring devices are arranged on one side of the constraint diaphragm at intervals along the incident direction of the light; the focus positioning devices are arranged on one side of the angle measuring device at intervals in the reflection direction of the light, and the focus positioning devices are used for positioning the focus of the off-axis parabolic mirror; the cable comprises a first section and a second section, the first section is connected with the constraint diaphragm and the angle measuring device, and the second section is connected with the angle measuring device and the focus positioning device; wherein the angle measuring device is used for measuring an included angle alpha between the first section and the second section. According to the auxiliary mounting equipment provided by the embodiment of the invention, the mounting and debugging operation of the off-axis parabolic mirror is greatly simplified, and the working efficiency and the overall performance of the system are remarkably improved.

The utility model discloses a driving assembly of an electronic rear shifting device and the electronic rear shifting device. The electronic rear shifting device comprises a base, a movable assembly, an outer connecting rod and a driving assembly, wherein the base is constructed into a parallelogram connecting rod mechanism; the base is fixedly installed on a frame, one end of the outer connecting rod and one end of the driving assembly are both pivoted to the base, and the other end of the outer connecting rod and the other end of the driving assembly are both pivoted to one side of the movable assembly. The movable assembly is configured as an output end; a motor and a gear set are arranged in the driving assembly; the gear set comprises a first-stage gear, a second-stage gear, a third-stage gear and an output gear which are sequentially connected, and the tooth diameters of the gears are sequentially increased. An output shaft of the motor is in transmission connection with the primary gear, and an output gear is pivoted to the base; a sensor used for detecting the rotation angle of the second-stage gear is correspondingly arranged in the axial direction of the second-stage gear. According to the utility model, the rotation angle of the secondary gear is detected through the sensor, the rotatable angle of the secondary gear is large, and the device has the advantages of small reading error and high fine adjustment precision.

The utility model relates to steel plate reinforcing structure technical field especially is a kind of anchoring steel plate reinforcing structure, including multilayer foundation, steel plate assembly, first reinforcing steel, second reinforcing steel and positioning assembly, the right side of multilayer foundation is equipped with steel plate assembly, the steel plate assembly includes and the inside lining steel plate of the right side of multilayer foundation, the left side of the inside lining steel plate is fixedly connected with multiple groups of anchoring steel plate group, in the utility model, by the support frame, positioning frame, first positioning casing and second positioning casing being set, the device can be through support frame and positioning frame and make first positioning casing and second positioning casing present specific inclination angle, by first positioning casing and second positioning casing to the location of first reinforcing steel and second reinforcing steel, it can be quickly positioned that first reinforcing steel and second reinforcing steel, not only more time-saving and labor-saving, but also can reduce the angle error of first reinforcing steel and second reinforcing steel placement.

The present application relates to the field of robot mapping, and proposes a robot and its mapping method, device and storage medium. The method comprises: detecting the straight line trajectory of the robot during the mapping process; inserting the corresponding positioning keyframe according to the straight line trajectory, the positioning keyframe comprising the first posture of the robot in the positioning coordinate system when the robot is located on the straight line trajectory, and the second posture of the robot in the map coordinate system; optimizing the second posture of the positioning keyframe with loop constraints according to the first posture determined by the displacement between the positioning keyframes of two adjacent straight line trajectories, and generating a map according to the optimized positioning keyframe. The trouble of first mapping and then aligning is avoided, and the positioning keyframe determined by the straight line trajectory is optimized according to the first posture of the two positioning keyframes with loop constraints, which can effectively reduce the positioning error, thereby improving the accuracy of the robot navigation map.

The utility model discloses improved double-sided treatment singeing equipment, which relates to the technical field of textile equipment and comprises a box body, two rotating rods are rotatably connected to the inner wall of the box body, discs are fixedly sleeved on the rod walls of the two rotating rods, singeing nozzles are fixedly connected to the side walls of the two discs, a sleeve is arranged on the rear side of the box body, and transmission components are arranged at two ends of the sleeve. The rotating rod is in transmission connection with the sleeve through a transmission assembly, a servo motor is installed on the rear side of the box body, a driving bevel gear is arranged on an output shaft of the servo motor, and a driven bevel gear in meshed connection with the driving bevel gear is arranged on the outer wall of the sleeve; the servo motor is in meshed connection with the sleeve, the servo motor rotates and then drives the singeing nozzle to adjust the angle, manual operation is replaced, the angle adjusting error is small, the stability is high, the working efficiency is improved, and time and labor are saved; the locking hole is formed to separate the first bevel gear from the second bevel gear, so that the angle of the corresponding singeing nozzle is independently adjusted, manual operation is liberated, and the efficiency is high.

The utility model discloses an outer sleeve assembling machine, which comprises a table top, an outer sleeve and a blood bag placing platform, the first clamp and the second clamp are arranged side by side, the clamping centers of the first clamp and the second clamp are aligned, and the first clamp and the second clamp extend upwards from the table surface and are respectively used for clamping butt joint accessories on the outer sleeve and the blood bag; the sliding table is installed below the table top and used for driving the first clamp to slide back and forth in the axial direction of the outer sleeve. Automatic alignment and insertion are achieved through the design that the centers of the two clamps are aligned, stable axial propelling is guaranteed by combining with sliding table driving, arc-shaped jaws of the two clamps are effectively fixed, deformation is prevented, the automatic assembly device has the advantages of being accurate in positioning, stable in operation and high in yield, and the requirement for automatic assembly of the outer sleeve of the blood linked bag is met.

This invention proposes a polarization 3D reconstruction method and system based on a prior-guided fusion network. The invention is implemented using a dual-branch architecture and includes a feature correction module that mutually corrects defects in the channel and spatial dimensions. Furthermore, a feature fusion module based on an effective cross-attention mechanism is proposed to fuse polarization and shadow prior features, achieving high-precision surface normal vector estimation and thus reconstructing high-quality 3D targets. Experimental results show that the fusion of polarization and shadow priors significantly improves the reconstruction quality of surface normals, especially for objects or scenes illuminated by complex light sources. In addition, by introducing specular confidence, the angular error of specular reflection regions can be reduced. Finally, because the network can effectively extract and fuse information from different priors, our proposed method outperforms existing deep learning-based polarization 3D reconstruction methods.

The invention discloses a honeycomb workpiece flat bottom plunge milling machining method. The method comprises the steps that S1, a tool is combined and positioned, wherein lines are scribed on the tool or baffles are arranged in the X direction and the Y direction of a machine tool to position the tool; s2, measuring the angle of the cutter: mounting the cutter on a spindle head, and measuring an included angle a between the cutter and the spindle when the orientation of the cutter is 0 degree; s3, modifying the included angle between the cutter and the main shaft in the numerical control program when the orientation is 0 degree to be an included angle a; s4, after the angle of the cutter is qualified, the numerical control program is operated to control the cutter to machine the honeycomb workpiece; and S5, after the machined honeycomb workpiece is qualified, the numerical control program process is ended. The honeycomb flat bottom plunge milling machining process solves the problem that machining cannot be conducted when an inner cavity or a long seam has a right angle or other angles. Compared with a traditional honeycomb machining process, the plunge milling process is used, large step pitch and feeding are used, and multi-layer milling during machining of a common milling cutter is avoided, so that the machining time is shortened.

The utility model provides an electric connection device and a battery swap station, and the electric connection device comprises a first support which is provided with a first installation hole; the power plug is used for being electrically connected with the battery and is connected with the first bracket, and the plugging end of the power plug is exposed through the first mounting hole; the second support is provided with at least one second mounting hole, the first support is provided with a guide rod corresponding to the second mounting hole, the guide rod is inserted into the corresponding second mounting hole, and the diameter of the second mounting hole is larger than that of the guide rod; the guide rod is further provided with a floating assembly, and the first support and the second support are connected in a matched mode through the floating assembly. In the embodiment of the utility model, when the power plug is in a plugging state, the floating assembly is compressed, and the guide rod can relatively move in the second mounting hole to drive the power plug to move relative to the second bracket, so that the error between the power plug and the battery is effectively reduced, and the charging effect and efficiency are improved.

The invention discloses a swivel bridge spherical hinge installation precision control construction method and system. The method mainly comprises the steps that a polyethylene slip sheet is installed and finely adjusted, wherein the polyethylene slip sheet is installed on the surface, meeting the precision requirement, of a lower spherical hinge in advance before the spherical hinge is installed; mounting and fine adjustment of a lower spherical hinge: precisely positioning the lower spherical hinge by using a high-precision control net and a high-precision measuring instrument, and mounting the lower spherical hinge to the central position of the lower bearing platform; and upper spherical hinge mounting and fine adjustment: mounting an upper spherical hinge meeting the precision requirement above the top surface of the lower spherical hinge, and performing fine adjustment on the central position of the upper spherical hinge, so that the circle center is centered after the upper spherical hinge is mounted. The method is suitable for installation of swivel bridge spherical hinges constructed through various types of horizontal swivel methods, and the installation precision of the spherical hinges can be improved and swivel errors can be reduced by means of the method for construction of railway swivel bridges or construction of swivel bridges such as highways, rivers and canyons.

The invention relates to a space distance measuring method and device based on mixed reality, and belongs to the technical field of mixed reality and image processing, and the method comprises the steps: initializing a depth sensor, a camera module and a hand ray of mixed reality equipment; a global event monitor is used for monitoring gesture operation of a user in real time; scanning the surrounding environment in real time by using a depth sensor to obtain point cloud data in the environment; calculating a normal angle difference value of adjacent triangles in the point cloud, and screening out edge points with significant angle changes; a measurement starting point and a measurement ending point are selected through hand rays, coordinates of the measurement points are corrected, and the final positions of the measurement starting point and the measurement ending point are solved; and the mixed reality head-mounted display completes virtual information positioning rendering in a numerical form according to the final position of the coordinate of the measurement point. According to the invention, accurate positioning of measurement points and efficient processing of spatial data are realized, and the measurement precision and response speed are significantly improved.

The invention discloses a polarization maintaining optical fiber array and a preparation method thereof. The preparation method comprises the following steps: arranging bare optical fiber parts of a plurality of polarization maintaining optical fibers into a cat eye adjusting auxiliary groove plate and a V-shaped groove plate, and pressing a first cover plate on the V-shaped groove plate; adjusting the non-bare optical fiber parts one by one, and performing dispensing fixation on the bare optical fiber parts and the cat eye adjusting auxiliary groove plate to form a first fixed part; the bare optical fiber parts, the V-shaped groove plate and the first cover plate are subjected to dispensing fixation to form a second fixing part; the first fixing part is removed, the second fixing part is turned over and then placed on the grinding auxiliary groove plate, and the second cover plate is pressed on the grinding auxiliary groove plate; the bare optical fiber parts, the grinding auxiliary groove plate and the second cover plate are fixed in a dispensing mode, and a third fixing part is formed; removing each non-bare optical fiber part, the second fixing part and the third fixing part to form a grinding part; and the two ends of the grinding part are ground, the third fixing part is cleaned, and the grinding auxiliary groove plate and the second cover plate are removed. It can be guaranteed that the slow axis angle of the polarization maintaining optical fiber is + / -3 degrees.