6results about How to "Improved vibration suppression effect" patented technology

The application provides an optimization design method of an internal permanent magnet synchronous electric spindle for a high-precision numerical control machine tool, and aims at the problem that a conventional electric spindle structure cannot perform real-time adjustment on axial pre-load and radial external load, and performs optimization design on the electric spindle structure from three aspects of high-speed ceramic ball hybrid bearing material, axial pre-load real-time compensation and radial external load real-time compensation. The application can improve dynamic characteristics of a rotor system and can actively inhibit shafting vibration.

This application discloses a robot motion control method, control system, medium, and product, relating to the field of robot motion control. Implementing this application, the control system constructs a digital twin model of the robot, determines the theoretical motion response data of the robot executing motor drive commands, and simultaneously collects the actual motion state data of the robot executing motor drive commands through equipment. The control system separates the actual motion state data into low-frequency motion components and high-frequency vibration components: the low-frequency motion component is used for trajectory correction, generating position compensation commands based on pose deviation; the high-frequency vibration component is used for vibration suppression, determining the stiffness coefficient through energy analysis and generating impedance adjustment commands. This dual feedback control mechanism ensures both the accuracy of the motion trajectory and the suppression of high-frequency vibrations, improving the positioning accuracy and stability of the robot during high-speed movement.

A drive unit includes an electric unit comprising: a first electric motor for driving; a reduction mechanism that transmits the rotational torque of the first electric motor to a drive wheel; a second electric motor that generates electricity by being driven by an internal combustion engine; and a speed-increasing mechanism that transmits the rotational torque of the internal combustion engine to the second electric motor. The first electric motor, the reduction mechanism, the second electric motor, and the speed-increasing mechanism are housed in a housing. Within the housing, the first electric motor and the second electric motor are arranged parallel to each other in the longitudinal direction of the vehicle body. The reduction mechanism and the speed-increasing mechanism are also arranged in the longitudinal direction of the vehicle body. The electric unit is connected to the internal combustion engine in a left-right direction of the vehicle body. The first rotating shaft, serving as the rotating shaft of the first electric motor, and the second rotating shaft, serving as the rotating shaft of the second electric motor, are located at the front and rear sides of the vehicle body in the longitudinal direction, separated by a crankshaft rotating shaft, which serves as the rotating shaft of the internal combustion engine.

The embodiment of the invention provides a vibration suppression method and device for a high-altitude operation machine and the high-altitude operation machine, and relates to the technical field of mechanical control. The method comprises the following steps: acquiring a low-dimensional motion signal of a working platform, wherein the low-dimensional motion signal is obtained by compressing an original dynamic signal based on a self-adaptive observation matrix; obtaining a sparse activation vector and determining a reconstruction signal according to the low-dimensional motion signal, the adaptive observation matrix and a pre-trained somatosensory event physical dictionary; determining a target swing frequency in a frequency spectrum corresponding to the reconstruction signal according to a preset swing frequency library so as to generate an enhancement vector reflecting the target swing frequency, generating a suppression signal according to a working platform motion parameter determined by the reconstruction signal, and generating an exploration vector according to a somatosensory event physical dictionary and a sparse activation vector; and updating the adaptive observation matrix according to the enhancement vector and the exploration vector, and sending a suppression signal to a motion control unit of the working platform. According to the method, real-time and self-adaptive vibration suppression can be realized to optimize the somatosensory.

The application discloses a kind of dry-type hollow reactor vibration suppression structures based on particle damping vibration absorption, dry-type hollow reactor includes multiple layers of winding, vibration suppression structure uses insulating material, the vibration suppression structure includes the damping particle cavity between the two layers of the winding of being arranged in adjacent, the damping particle cavity is filled with damping particle.The application also discloses a kind of dry-type hollow reactor vibration suppression structures based on particle damping vibration absorption installation method, including steps S1, damping particle is filled into the damping particle cavity, then the damping particle cavity is pumped vacuum;S2, dry-type hollow reactor assembly when damping particle cavity is pasted between the two layers of winding of adjacent;S3, after dry-type hollow reactor assembly is completed, to the damping particle cavity inflation so that damping particle cavity expands and is fixed between the two layers of winding of adjacent.The application can effectively absorb the body vibration of dry-type hollow reactor, improve the safety and stability of dry-type hollow reactor.

This invention discloses an array-type acoustic black hole ring vibrator and a broadband vibration absorption device for pipelines including the array-type acoustic black hole ring vibrator, belonging to the technical field of vibration reduction devices. The array-type acoustic black hole ring vibrator of this invention is fixed to the outside of an annular pipeline and includes several acoustic black hole structural units arranged in an array along the circumference of the annular pipeline. The distances between the outer and inner surfaces of each acoustic black hole structural unit and the radial central axis of the annular pipeline exhibit a smooth gradient change with a periodic variation, being larger at both ends and smaller at the center, forming an outer arc-shaped profile surface and an inner arc-shaped profile surface. A ring segment of constant thickness is also provided between every two acoustic black hole structural units. This invention can achieve lower frequency and wider frequency pipeline vibration suppression without changing the internal flow channel structure of the pipeline or causing any damage to the pipeline.