37results about How to "Improve exercise quality" patented technology

A hybrid plane lower-mobility virtual axis machine tool belongs to the technical field of mechanical manufacturing. The main structure of the hybrid plane lower-mobility virtual axis machine tool generally includes a fixed platform, an AC axis, a movable platform, four connection branched chains, two sliding seats and two upright posts. A parallel connection part of the machine tool has two translational freedom degrees on a plane, while a series connection part (that is, the AC axis) has two rotation freedom degrees in a space. In order to apply the machine tool in the processing industry successfully, a relatively weak link, that is, the static stiffness of the non-plane direction, of the structure needs to be improved. In the invention, four connecting bars are used for strengthening the connection branched chains, the integrity is improved, and the whole static stiffness, especially the static stiffness of the non-plane direction, of the machine tool is enhanced. The invention canraise the static stiffness of the non-plane direction of the machine tool and is characterized by small motion mass, low manufacturing cost, easy maintenance, and so on.

The invention discloses a final assembly mechanism of an eight-station cold heading machine. The final assembly mechanism comprises a base and a rack, wherein a main motor and a reduction gearbox device are arranged on the base, the main motor is connected with the reduction gearbox device, a main transmission device is connected to the reduction gearbox device, a rear ejection device is connected to one end of the main transmission device, a cutting device and a feeding device are connected to the other end of the main transmission device, the feeding device is connected with the rear ejection device, a clamping device is connected to the cutting device, and a sliding block device is connected to the middle of the main transmission device. According to the final assembly mechanism, the punching operation is completed mainly in the steps that a flywheel is driven to rotate by the main motor by virtue of the reduction gearbox device, so as to drive a crankshaft to rotate, the rear ejection device, the feeding device, the cutting device and the sliding block device are respectively driven to do a reciprocating motion by the crankshaft, all motions are driven by the crankshaft, the workpiece feeding, cutting and clamping are implemented under the action of the crankshaft, and the punching steps can be continuously repeated in sequence.

Disclosed are a brake disk and a method for manufacturing the same. In particular, the brake disk may include a friction surface formed of cast iron, and the friction surface of the brake disk is divided into a plurality of sections in a circumferential direction. Preferably, an average of the numbers per unit area of eutectic cells formed on surfaces of the sections may not be greater than 300 ea / cm2.

The invention relates to a method for designing double-curvature automobile door glass on the basis of drum-shaped line theories. The method includes steps of (1), determining geometric input models according to characteristics of double-curvature glass and modeling A surfaces; (2), determining parameterized drum shaft positions according to the geometric input models; (3), determining contour lines of front and rear boundaries of glass surfaces according to characteristics of drum-shaped lines; (4), generating double-curvature glass surfaces by means of sweeping according to parameterized waist lines and the contour lines. The method has the advantages that the coincidence degrees of the double-curvature glass surfaces and the modeling A surfaces can be upgraded, interference between the double-curvature glass and automobile door accessories in lifting procedures can be reduced, and the movement stability and reliability can be improved; the traditional ring surface design models are improved, the drum shaft positions are optimized, the drum-shaped double-curvature glass is designed, accordingly, standard guidance effects can be realized, the method is favorable for improving the fitting precision and the movement quality of the double-curvature glass and reducing the failure rate and has high engineering practical value, and major requirements on improving the automobile body development capacity of the automobile industry can be met.

The invention discloses a movement monitoring device and method. The device comprises a first bracelet, a second bracelet, an infrared emitting and receiving module, an infrared reflection module and a control module, wherein the first bracelet and the second bracelet are worn on the two hands of a user respectively; the infrared emitting and receiving module is arranged on the first bracelet and is used for emitting an infrared signal and receiving a returned infrared signal; the infrared reflection module is arranged on the second bracket and is used for reflecting the infrared signal emitted by the infrared emitting and receiving module; the control module calculates the distance between the first bracelet and the second bracelet according to the returned infrared signal, and performs movement monitoring according to the distance between the first bracelet and the second bracelet. Through the adoption of the movement monitoring device and method provided by the embodiment of the invention, effectiveness of real-time monitoring of user movement is realized when the user is in movement, and the user experience and movement quality are improved.

The present invention provides a physical fitness monitoring method based on riding sports, a physical fitness monitoring terminal, and a computer-readable storage medium; the method includes: collecting riding data of a monitoring object; calculating the riding data to generate corresponding real-time information; The real-time information includes a real-time physical fitness value; comparing the real-time physical fitness value with the initial physical fitness value of the monitoring object to determine whether the real-time physical fitness value reaches a limit threshold; wherein, the initial physical fitness value is based on preset rules Obtained; if the real-time physical fitness value reaches a limit threshold, an instruction is issued to remind the monitored object. The invention helps the user to improve the exercise quality and riding performance, and helps the user to avoid the situation of physical injury caused by excessive riding by setting the limit threshold, thereby ensuring the riding safety and health of the user.

A motion control system for an independent cart system provides for a minimum spacing between movers that is less than the width of a coil used to control motion of the movers. Blocks are statically or dynamically defined along the length of each track segment, where the width of a block is less than the width of a coil along the same track segment. Dividing the width of each coil into smaller block widths provides for an improved resolution of control for each mover. The blocks may also establish collision prevention between movers without requiring knowledge of the position of adjacent movers. Each block is assigned to a single mover at a time, but multiple blocks may be assigned to a single mover. A mover is permitted to only move within those blocks assigned to it and cannot have blocks assigned to it that are already assigned to another mover.

The invention relates to the technical field of underwater equipment, in particular to a deep-sea tow body and a method for adjusting the attitude of the deep-sea tow body. It includes a tow body frame, an attitude adjustment system, a depth control system, a tow body control system and two side wings, wherein the attitude adjustment system, the depth control system and the tow body control system are respectively fixed on the tow body frame through a subsystem support frame, The two wings are symmetrically arranged in the tow body frame, the attitude adjustment system and the depth control system are located below the wings, the bottom surfaces of the two wings are respectively connected with the attitude adjustment system, and the two attitude adjustment systems are arranged symmetrically. The motion stability of the deep-sea towing body during the towing process can be ensured by adjusting the pitch and roll attitudes of the flanks.

The invention discloses a novel sliding mode prediction fault tolerant control method for actuator failure of a variable time delay control system. A sliding mode prediction fault tolerant control method based on whale optimization algorithm is designed for the problem of fault tolerant control of four-rotor systems with discrete time delay uncertainties. The whole-process sliding mode surface isused as a prediction model to ensure the global robustness, and a power function reference trajectory with failure compensation is designed to suppress the uncertainty and failure while reducing the influence of buffeting. In the process of rolling optimization, considering the requirement of high-precision and fast response of the optimization process, the whale optimization algorithm is adoptedto have strong optimization performance, less parameter setting, fast convergence and high precision. The novel fault tolerant control method provided by the invention is applied to robust fault tolerant control of a class of uncertain discrete systems with time-varying delays.

The invention discloses a processing method and device for motion trajectory video. Wherein, the method includes: during the movement of the target athlete, acquiring characteristic information of other athletes, wherein the characteristic information includes: attribute information of other athletes, movement information of other athletes, and other athletes relative to the target athlete. The relative position of the target athlete; generate the predetermined audio corresponding to the movement state of the target athlete and the feature information; add the predetermined audio to the target athlete's motion track video to obtain the target motion track video. The invention solves the technical problem in the related art that the motion track video content generated according to the motion state of the athlete is relatively single.

The invention provides a flexible coupling, comprising a cylinder body and flanges which are arranged at two ends of the cylinder body. The invention is characterized in that the cylinder body is an FRP cylinder body; the flanges are fixedly connected with or integrated into a whole with a taper sleeve or a cylinder sleeve; the two ends of the FRP cylinder body are sheathed with, fixedly bonded to or fixedly connected with the taper sleeve or the cylinder sleeve respectively. The invention is especially suitable for the connection of a speed increasing box in wind power generation equipment and a wind power generation set, plays a good damping and impact and vibration absorption role, has the capability of providing the displacement compensation, effectively improves the motion quality and stability of transmission machines, reduces the noise and improves the safety performance of the equipment.