40results about How to "Improve displacement control accuracy" patented technology

The invention relates to a laser displacement transducer mounting support provided with an adjusting and self-calibrating structure. The laser displacement transducer mounting support comprises an upper adjusting frame, a pre-tightening spring, a lower adjusting frame, an adjusting bolt and a transducer base frame provided with a transducer. The transducer base frame is fixed on the upper adjusting frame. The lower end face of the upper adjusting frame and the upper end face of the lower adjusting frame are connected by virtue of a dovetail groove structure with inclination, the right end face of the upper adjusting frame is provided with an adjusting screwed hole, a right boss of the lower adjusting frame is internally connected with the adjusting bolt, the upper adjusting frame and the lower adjusting frame are connected in an adjustable way by virtue of the adjusting bolt and the screwed hole, the pre-tightening spring is sheathed outside the adjusting bolt, and the two ends of the pre-tightening spring are respectively connected with the right end face of the upper adjusting frame and the inner end face of the right boss of the lower adjusting frame in a compressed manner. When the laser displacement transducer mounting support provided by the invention is used for carrying out adjustment and preliminary calibration in a laser displacement transducer application field, auxiliary materials, devices or tools are not required to complete the adjustment and preliminary calibration, the laser displacement transducer mounting support provided by the invention is convenient to use and is provided with a corresponding standard, and displacement control accuracy is high.

The invention discloses a method for in-situ dynamic three-dimensional reconstruction of a sample by using a multi-degree-of-freedom sample rod. The method comprises steps of manufacturing the samplerod, and loading a sample into a head end of the sample rod; inserting the sample rod into a transmission electron microscope to adjust a feature point on a to-be-observed area of the sample to be aligned with the axis of the sample rod; enabling the rotating shaft to accumulatively rotate by 180 degrees, and taking a picture every other 1 degree; and S3, importing the pictures obtained in the step S3 into a computer, and carrying out three-dimensional reconstruction.

The invention discloses a multi-degree-of-freedom sample rod with a sample clamping nozzle, and the rod comprises a sleeve, a pre-tightening screw and a detachable sample clamping nozzle; the sample clamping nozzle comprises a clamping part for loading a sample and a connecting part. Samples of various sizes can be observed, the sample clamping nozzle is arranged to be used for installing the samples, the samples and the sample clamping nozzle can serve as sample assemblies to be installed at the front end of the sample rod, thereby facilitating installation and disassembly.

The invention discloses a conical cylinder vibration high-speed queuing seed discharging device and method. The conical cylinder vibration high-speed queuing seed discharging device comprises a conical cylinder, a seed discharging head, a vibration motor set, a vibration isolation component and an arch forming detection system, wherein the vibration motor set is installed on the conical cylinder, the vibration isolation component is fixed at the upper end of the conical cylinder through a clamping nut, the seed discharging head is mounted at the lower end of the conical cylinder, and the arch forming detection system is mounted below the seed discharging head. The method specifically comprises the following steps of calibrating parameters, and specifically, calibrating related parameters according to the size and fluidity of seeds; performing queuing and seed discharging, and specifically, controlling the conical cylinder to vibrate according to determined control parameters to realize high-speed queuing and seed discharging; and performing vibration arch breaking, wherein the arch forming condition is detected, and when arch forming is detected, arch breaking vibration related control parameters are started for arch breaking. According to the device and the method, arch forming during seed discharging can be avoided, seeds can be discharged in a high-speed queuing mode, the characteristics of being high in discharge capacity control precision, simple in structure, good in seed discharging uniformity, low in seed damage rate and the like are achieved, high-speed queuing seed discharging can be achieved, and real-time and efficient operation is guaranteed.

The invention discloses an arm type suspension based on a fuzzy PID (proportion integrals differential) controller and an active displacement control method thereof. The arm type suspension based on the fuzzy PID controller comprises an arm type suspension, a frame, a driving circuit, two displacement sensors and the fuzzy PID controller, wherein the arm type suspension is arranged on the frame; the fuzzy PID controller is connected to a motor through the driving circuit; a pulse encoder is arranged on the motor; the arm type suspension comprises the motor, two longitudinal arms, two cantilever transmission regulating mechanisms and two electromagnetic clutches; the two cantilever transmission regulating mechanisms are distributed at the two sides of the motor; two output ends of the motorare connected to one ends of the two cantilever transmission regulating mechanisms through the electromagnetic clutches; the other ends of the two cantilever transmission regulating mechanisms are connected to the two longitudinal arms; the two displacement sensors are respectively arranged on the two longitudinal arms; and the displacement sensors and the pulse encoder are connected to the fuzzyPID controller. The effect of active displacement control of the arm type suspension can be improved; and the arm type suspension based on the fuzzy PID controller improves the driving smoothness ofvehicles, and ensures smooth and steady control, high displacement control accuracy, and no external interference.

The invention discloses a spot welding system. The spot welding system comprises a man-machine interaction module, a control module, a welding head control module and a machine table motion module. The man-machine interaction module is used for acquiring motion parameters and sending the motion parameters to the control module; the control module is used for controlling the machine table motion module to move to a corresponding spot welding position according to the motion parameters and sending feedback information to the control module; the control module is also used for sending execution information to the welding head control module according to the feedback information; and the welding head control module is used for controlling a welding head to conduct spot welding according to theexecution information, motion parameters are set in the man-computer interaction module, the control module controls the machine table motion module to move at the position of a welding point, and then the welding head control module controls the welding head to conduct welding. The machine table motion module is adopted to transport batteries and nickel sheets which need to be welded to the position where the welding head control module can conduct welding, manual operation is reduced, the safety of workers is improved, and the welding efficiency is greatly improved.

The invention discloses a multi-degree-of-freedom sample rod with an optical fiber, which comprises a framework. An optical fiber groove is formed in the framework. The side surface of the framework is provided with the optical fiber groove for the optical fiber to pass through, thereby avoiding abrasion and winding of the optical fiber and being beautiful in wiring; moreover, the optical fiber groove is connected with a front-end circuit board, the front-end circuit board has the function of guiding the optical fiber, the head of the optical fiber passes through the front-end circuit board, the head of the optical fiber has small bending amplitude, and light waves cannot be attenuated.

The invention discloses a multi-degree-of-freedom sample rod with a rotating shaft driving assembly. The sample rod comprises a shell and a rotating shaft, wherein at least one group of rotating shaftdriving assembly is arranged between the shell and the rotating shaft, each group of rotating shaft driving assembly comprises two driving units which are symmetrically arranged, and each driving unit comprises a substrate, an electrode and a piezoelectric ceramic piece. The sample rod is advantaged in that by arranging a plurality of groups of rotating shaft driving assemblies, the rotating shaft can rotate and axially move, and multi-degree-of-freedom driving of the sample rod is realized.

The invention discloses an adjusting method for aligning a sample to the axis of a rotating shaft. The adjusting method comprises steps of manufacturing a sample clamping nozzle, inserting a sample rod with the sample into a transmission electron microscope and the like. When the rotating shaft rotates, a to-be-observed area of the sample is always in the observation visual field of the transmission electron microscope by adjusting the sample to align with the axis of the rotating shaft.

The invention discloses a multi-degree-of-freedom sample rod, and the sample rod comprises a shell and a rotating shaft; a skeleton is arranged between the shell and the rotating shaft, and the skeleton is coaxial with the shell and the rotating shaft. During assembly, the rotating shaft and the skeleton are coaxial, then the rotating shaft-skeleton is installed in the shell, and the rotating shaft, the skeleton and the shell are coaxial, so the installation precision is improved; in addition, the skeleton further provides an installation position for the rotating shaft driving assembly, and the skeleton further plays a role in separating the rotating shaft from the wire and preventing the wire from interfering with rotating shaft movement.