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21 results about "Motion control" patented technology

Motion control is a sub-field of automation, encompassing the systems or sub-systems involved in moving parts of machines in a controlled manner. The main components involved typically include a motion controller, an energy amplifier, and one or more prime movers or actuators. Motion control may be open loop or closed loop. In open loop systems, the controller sends a command through the amplifier to the prime mover or actuator, and does not know if the desired motion was actually achieved. Typical systems include stepper motor or fan control. For tighter control with more precision, a measuring device may be added to the system (usually near the end motion). When the measurement is converted to a signal that is sent back to the controller, and the controller compensates for any error, it becomes a Closed loop System.

Air bridge and automatic abutting method therefor

ActiveCN103419944AAvoid interferenceSimple maintenance monitoringGround installationsAir bridgeControl system
The invention relates to an air bridge and an automatic abutting method therefor. The air bridge comprises an airplane connector, a lifting mechanism, a travelling mechanism and an automatic abutting device. The automatic abutting device comprises an image data acquisition unit, a preprocessing unit, a database, a visual identification and positioning unit, a motion control unit and a bridge control system. When an airplane parks at a parking position and the air bridge automatically abuts at an initial position, the automatic abutting device is started; image data of a hatch door of the airplane, included in the image data acquisition unit, is preprocessed; an image meeting the features of the hatch door of the airplane is recognized from the processed image data; information about the position of the airplane connector relative to the hatch door is calculated; travel control information is generated according to the information about the relative position; the relative position information and the travel control information are encoded and transmitted to the bridge control system; finally, the received information is decoded, the travel control information is executed, and the air bridge is driven to move until automatically abutting to the hatch door.
Owner:SHENZHEN CIMC TIANDA AIRPORT SUPPORT

Actuator inside of motion control

ActiveUS20120120297A1Television system detailsProjector focusing arrangementClassical mechanicsEngineering
A device can comprise an outer frame, a platform, and a motion control mechanism. The motion control mechanism can be adapted to permit movement of the platform in a desired direction with respect to the outer frame and inhibit rotation of the platform with respect to the outer frame. An actuator can be contained at least partially within the motion control mechanism.
Owner:DIGITALPTICS MEMS

Measurement method of axial size of abrupt-change cross section of revolving body

InactiveCN101571378ALow positioning accuracy requirementsFast measurementUsing optical meansSize measurementFast measurement
The invention belongs to the technical field of manufacture and measurement of measuring devices, more particularly relates to a high-precision automatic measurement method of axial size of abrupt-change cross section of a revolving body. The measurement method is based on the principles of adopting a high-precision linear array CCD optical imaging technology and a high-precision motion control technology, performing rapid measurement on a contour line at longitudinal section of the revolving body to obtain contour data of the revolving body, calculating curvature change of the contour line of the revolving body, and seeking local extremum points of the curvature change on the contour line to obtain the axial position of the abrupt-change cross section, thus calculating the axial size of the abrupt-change cross section. The measurement method is suitable for rapid measurement of the axial size of grooves, benches, frustums and the like of various complex revolving body parts, and the method is especially suitable for revolving body parts which are provided with small-space grooves and can not be easily measured by a contact method.
Owner:BEIJING INST OF TECH

High-precision 3D printer

PendingCN109228324AAchieve high precision controlReasonable structureManufacturing platforms/substratesManufacturing driving meansControl systemEngineering
A high-precision 3D printer comprises a base, wherein a supporting plate is vertically fixed on the base; a workbench device moving in an X axis is arranged on the base; a printing mechanism is arranged on the supporting plate; the printing mechanism comprises an extrusion feeding device and a printing nozzle device; the extrusion feeding device comprises a fixing block; a connector and an extrusion wheel set are fixed to the upper end and the lower end of the fixing block respectively; the printing nozzle device comprises a throat pipe, a heating tube and a printing nozzle. The high-precision3D printer is reasonable and contact in structure; through the addition of an optical position detecting component into a motion control system and coordination of the workbench device and the printing mechanism, stepping motors in three directions are controlled by the same main control panel, and the main control panel is provided with a touch screen, so that the high-precision 3D printer is convenient and easy to operate and high in printing precision, has the advantage of lower cost than that of the conventional motion control system and can meet a requirement on the 40[mu]m printing precision; the high-precision control of the 3D printer is achieved, and the high-precision 3D printer is good in using effect and suitable for popularization.
Owner:HANGZHOU HIMALAYA INFORMATION TECH

Three-dimensional calibrating measurement device for neutron diffraction stress analysis

PendingCN106770402ASmall space requirementRealize accurate 3D calibrationMaterial analysis using wave/particle radiationStress measurementMeasurement device
The present invention provides a three-dimensional calibrating measurement device for neutron diffraction stress analysis. The three-dimensional calibrating measurement device can move with multi-degree of freedom by utilizing a three-dimensional scanner matched with a sample table firstly; scanning images of samples on the sample table are collected into a computer for building a three-dimensional model of each sample; sub-net treatment is performed on each three-dimensional model, and each net grid is allocated with a unique identification; any target net grid is selected from the three-dimensional model in a manual or automatic mode, the movement of the sample table is controlled by a movement control program set in the computer, so as to enable an entrance slit to be aligned to the corresponding target net grid, at the same time, each diffraction slit, a corresponding collimator and a corresponding neutron detector move to corresponding positions, a neutron source emits a neutron beam, and neutron diffraction stress measurement is started. The three-dimensional calibrating measurement device can be used for achieving precise three-dimensional calibrating on the samples, is low in space requirement, and free of additional installation of datum mark light sources, avoids introduction of additional errors, and can reach the position accuracy up to 100 mu m for detected samples.
Owner:INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF

Flight simulator

InactiveCN109935132AImprove realismTroubleshoot technical issues with poor fidelityCosmonautic condition simulationsSimulatorsFlight simulatorMotion system
Provided is a flight simulator. The flight simulator includes a hardware system, a vision system, a sound effect system and a motion system; the hardware system is used for sending a motion control instruction to the vision system for controlling the motion of an aircraft model in the vision system; the vision system is used for outputting first motion data of operating of the aircraft model basedon the motion executed by the aircraft model according to the motion control instruction; the motion system is used for processing the first motion data to obtain second motion data of a six-degree-of-freedom motion platform in the motion system after receiving the first motion data to control the six-degree-of-freedom motion platform to conduct motions; the sound effect system is configured to control the sound effect of an engine of the flight simulator according to the first motion data after receiving the first motion data. The simulator solves the technical problem of poor fidelity of flight simulation in the prior art.
Owner:HAIKOU INST OF FUTURE TECH HAIKOU

General-purpose motion control device and control method for rehabilitation robot

The invention discloses a general-purpose motion control device and control method for a rehabilitation robot. The control device comprises a master controller of the rehabilitation robot, a motor driving module, a position and speed detection module, a joint force information acquisition module, a contact force information acquisition module and a rehabilitation data analysis module, wherein themotor driving module, the position and speed detection module, the joint force information acquisition module and the contact force information acquisition module are all mounted on the rehabilitationrobot, and the motor driving module is connected with a plurality of joint driving motors for driving joints of the rehabilitation robot. The control device and control method have the beneficial effects that through the design of a modularized total showing structure, convenient expansion of components and functions of the rehabilitation robot is increased; and the control device can be suitablefor different structure forms of a single-freedom-degree structure form, a two-freedom-degree structure form, a three-freedom-degree structure form, a multi-freedom-degree structure form and the like, and has the functions of performing single-joint independent training of different positions of upper limbs, lower limbs, waists and the like, multi-joint synergistic training and the like.
Owner:SHENGJING HOSPITAL OF CHINA MEDICAL UNIV

Agricultural picked object recognition algorithm based on database

PendingCN114429310AReduce lossImprove sales product qualityDatabase management systemsOffice automationFragariaAlgorithm
The invention belongs to the technical field of image recognition, and particularly relates to an agricultural picked object recognition algorithm based on a database, which is characterized in that a computer sets a maturity index according to a plurality of indexes such as colors, sizes and wrinkles of fruits to be picked and characteristics associated with maturity height, and establishes a model for the maturity degree and storage time of the fruits; the computer carries out artificial intelligence recognition on fruit pictures collected by the picking robot and transmits fruit types and coordinate information to a motion control unit of the picking robot, and finally grabbing, sorting and obstacle-avoiding walking are achieved. Compared with the prior art, the method has the beneficial effects that the maturity of strawberries can be divided into multiple grades according to market requirements, the maturity of picked strawberries with long storage time or long transportation distance is slightly lower, so that the distance of mailing and selling areas can be selected according to the maturity, the loss of the strawberries in transportation is reduced, and the economic benefit is increased. Sales areas are expanded, and economic benefits are improved.
Owner:UNIV OF SCI & TECH LIAONING

Hinged rigid body motion control device applied to underwater large-pulse-width explosion experiment

ActiveCN112179615AEliminate Rigid Body DisplacementAddressed issues with true-scale damage featuresHydrodynamic testingShock testingExperimental testingTEX-explosive
The invention belongs to the technical field of model experiment target cabin design experiment testing, and particularly relates to a hinged rigid body motion control device applied to an underwaterlarge-pulse-width explosion experiment. A traditional buoy is replaced with the circular water tank, the floating height is convenient to adjust, the up-down swing amplitude problem of the traditionalbuoy is effectively reduced, the rigid body motion displacement of the whole device is controlled, and the influence of impact waves on the device can be reduced. The circular water tank and the annular water tank are connected through the triangular frame and the one-way hinge, and the distance between the circular water tank and the annular water tank can be conveniently adjusted; the steel wire ropes are made of flexible materials, and the impact influence of instant explosion on the annular water tank is reduced through the flexible characteristics. The position relation between the explosive and the ship body is convenient to adjust, compared with a traditional buoyancy tank, the annular water tank enables shock waves to penetrate through the middle, and the influence of the shock waves on experiments is reduced; the plate frame provides balance weight, and huge shaking caused by explosion impact is reduced.
Owner:HARBIN ENG UNIV

Reticle stage balance block combined centroid anti-drifting movement control method

ActiveCN105676597AEliminate the effects ofDrift does not occurPhotomechanical exposure apparatusMicrolithography exposure apparatusRelative displacementMovement control
The invention relates to a reticle stage balance block combined centroid anti-drifting movement control method. The method comprises the steps that a relative displacement signal of a balance block relative to the y direction of a base station and a relative displacement signal of a coarse moving station relative to the y direction of the balance block are obtained respectively by adopting absolute grating rulers; a balance block and coarse moving station combined centroid displacement signal is obtained by calculating the displacement signals and serves as a feedback signal, nonlinear variable gain anti-drifting control is conducted on the balance block, and therefore the combined centroid position remains unchanged. According to the reticle stage balance block combined centroid anti-drifting movement control method, the influence of reactive force of a coarse moving station linear motor on the base station can be effectively eliminated, the combined centroid anti-drifting movement control method not only can ensure the balance block not to produce drifting exceeding the limit range in the coarse moving station linear motor moving process, but also can prevent larger reactive force from being transferred to the base station.
Owner:TSINGHUA UNIV +1
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