Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

107results about How to "Achieve smoothness" patented technology

Method and system for gear shifting control of hybrid car in parallel connection mode

ActiveCN104859638AConflict of controlAvoid Control ConflictsHybrid vehiclesHybrid carElectric machine
The invention discloses a method and system for gear shifting control of a hybrid car in a parallel connection mode. The method comprises the following steps: when the detected car speed meets a gear shifting condition, power sources are controlled to be unloaded; a clutch is controlled to be disengaged; the hybrid gear is controlled to be put into an idle gear; after the idle gear is engaged, the rotating speed of a driving motor is controlled to be adjusted to a target rotating speed; the adjusted actual rotating speed of the driving motor is taken as the target rotating speed, and the rotating speeds of an engine and an ISG motor are adjusted; after the adjustment, the hybrid car is put into a target gear; after the target gear is engaged, the clutch is controlled to be engaged, so that a gear shifting process is finished. The method and system have the advantages that the technical problems that in the prior art, the possibility of power source control conflict is high, so that the engine and the ISG motor are not integrated for control, and the conventional control process is complex can be solved; a gearbox controller is utilized for controlling the torque of the clutch and power sources during the gear shifting process, an active rotating speed adjustment process is added, and the engine and the ISG motor are integrated for control, so that the control during the gear shifting process is simple, the gear shifting time is shortened, and smooth gear shifting is realized.
Owner:BEIQI FOTON MOTOR CO LTD

Method for cooperatively controlling air pressure and regenerative brake of hybrid electric bus

InactiveCN101992762ACompensation for braking force requirementsAvoid the phenomenon of re-entering ABS controlElectrodynamic brake systemsBraking systemsNew energyBrake force
The invention relates to a method for cooperatively controlling an air pressure and regenerative brake of a hybrid electric bus, which belongs to the technical field of new-energy vehicles. The method comprises the following steps of: firstly, collecting a current air pressure brake force, a brake pedal travel, a brake pedal travel speed, battery information, motor information and vehicle state information of a hybrid electric bus; secondly, distributing the air pressure brake force and a motor brake force by utilizing a regenerative brake force distribution algorithm; thirdly, cooperatively controlling regenerative brake and an ABS (Antilock Brake System) by utilizing a regenerative brake and ABS cooperative control algorithm; and fourthly, compensating and controlling the air pressure brake force by utilizing an air pressure brake force compensation control algorithm. By utilizing the invention, part resources of the common air pressure brake system and the regenerative brake system of the hybrid electric bus can be fully utilized, the brake energy can be recycled to the maximum extent, the economical efficiency of the entire bus is enhanced, and wheels can be prevented from locking so that the brake safety of the entire bus is improved.
Owner:JILIN UNIV

Manipulator artificial potential field space path planning method combined with spherical tree model

ActiveCN109434836ASolve the problem of excessive redundant spaceSimple calculationProgramme-controlled manipulatorVirtual targetPotential field
The invention discloses a manipulator artificial potential field space path planning method combined with a spherical tree model. The manipulator artificial potential field space path planning methodcombined with spherical tree model comprises the following steps of (1) constructing a sphere octree bounding box of a barrier; (2) trimming a hollow sphere, and after clipping the hollow sphere, obtaining a model with a rough shape of the barrier; (3) trimming a redundant sphere, and after trimming the redundant sphere, obtaining a model capable of accurately reflecting the shape of the model; (4) building an artificial potential field model, and calculating the attractive force of a target point, and the repulsive force and the resultant force of the barrier suffered by a robot; (5) judgingwhether the robot is trapped in a local minimum value or a vibration area or not, and if yes, building a virtual target point, and calculating the attractive force of the virtual target point, and therepulsive force and the resultant force of the barrier suffered by a current point; (6) carrying out iterative computation, computing to obtain an optimal solution, and planning an appropriate obstacle avoidance path; and (7) smoothing a track.
Owner:ZHEJIANG UNIV

Self-adaption damping elevator well damping assembly

The invention discloses a self-adaption damping elevator well damping assembly. The self-adaption damping elevator well damping assembly comprises a buffer plate, a magneto-rheological damping device and a control system. The magneto-rheological damping device at least comprises four sets of rotating magneto-rheological damper assemblies which are arranged in the circumferential direction of an elevator well and distributed on the bottom surface of the buffer plate and independent lift the buffer plate. Each set of rotating magneto-rheological damper assembly comprises a lifting arm, a rotating shaft and at least two rotating magneto-rheological dampers arranged at the two ends of each rotating shaft in a transmission mode correspondingly. The control system comprises a falling parameter detection unit, a power unit and a central processing unit. The damping force of all the lifting arms is adjusted in real time by the central processing unit according to falling parameters detected through the falling parameter detection unit to enable the inclined buffer plate to be horizontal, the effect that larger and effective damping force gets involved in the later period is ensured, the smoothness of descending buffering is achieved, high-speed elevators and low-speed elevators can be commonly used, and the safety performance of the elevators is improved.
Owner:CHONGQING TECH & BUSINESS INST

Device and method for active compliance control for XYZR four-axis drilling robot

The invention belongs to the field of robot control, and particularly relates to a device and a method for active compliance control for an XYZR four-axis drilling robot. The device comprises a main control module, a servo drive control module and a human-computer interaction module, wherein the main control module is mutually connected with the servo drive control module, and is further mutually connected with the human-computer interaction module. The device disclosed by the invention is complete in function, clear in function, simple to realize and low in module coupling degree; the synchronism and smoothness of system motion are realized simultaneously; and an active compliance control decision module is independently designed, complex modelling for a feeding process of a drilling machine, and an unsupervised and regular repeated cohesion experiment are avoided while the related data in the feeding process of the drilling machine is acquired, the need of online use of expensive acceleration section sensor and force sensor for each robot is avoided, the cost is saved, the unstable factors introduced by online adjustment for control parameters, and a system downtime process are avoided, and a switchover mechanism for kinematic position control and active compliance force control is reasonable.
Owner:WILD SC NINGBO INTELLIGENT TECH

Wide light beam scanning exposure method

ActiveCN104570620AOvercoming seam problemsEliminates effects on scanningPhotomechanical exposure apparatusMicrolithography exposure apparatusUltrasound attenuationGrating
The invention relates to a wide light beam scanning exposure method which comprises the following steps: setting a double-beam exposure system, taking the direction along the grating vector in the double-beam exposure system as the x direction, taking the direction along the grating line as the y direction, and taking the direction along the substrate normal as the z direction; exposing a process edge with the area of A*d on the right edge of the substrate by utilizing an interference field formed on the surface of the substrate, pushing the process edge into a first attenuation wedge and a second attenuation wedge, and forming latent image stripes with the area of A*d on the process edge; performing t-time static exposure on an area with the area of A*3d on the left side of the process edge, and performing linear exposure on an area with the area of A*d positioned on the left side of the area with the area of A*3d; forming latent image stripes with the area of A*3d by virtue of the first and second latent image stripes; and sequentially performing scanning exposure on total areas on the left side of the latent image stripes with the area of A*3d by utilizing light beams with the width of d until the left edge of the substrate leaves the right edge of the exposure beams, and ending the scanning exposure process.
Owner:TSINGHUA UNIV

Thin film with low friction coefficient and high water contact angle and preparation method thereof

The invention provides a thin film with a low friction coefficient and a high water contact angle and a preparation method thereof. The thin film comprises a transparent base film, a bottom coating layer and an AF layer which are sequentially attached from bottom to top. The preparation method comprises the following steps: step S001, taking materials: selecting a transparent base film made of a proper material; step S002, preparing a bottom coating solution: diluting an unsaturated functional group-containing polymer and a photoinitiator with a solvent to form a base coating solution; step S003, attaching a bottom coating layer: coating the transparent base film with the base coating solution, and carrying out heating curing, UV curing or dual curing through a drying oven to form the basecoating layer; S004, attaching an AF layer: coating the semi-finished product formed in the step S003 with an AF solution, and forming the AF layer through cross-linking curing after being heated bythe drying oven. According to the thin film with the low friction coefficient and the high water contact angle and the preparation method thereof, the defects that an existing thin film is smooth, poor in anti-fingerprint effect, complex in preparation process and not suitable for mass production are overcome.
Owner:NINGBO HUGHSTAR ADVANCED MATERIAL TECH

Elevator buffering system with variable damping force

The invention discloses an elevator buffering system with variable damping force. The elevator buffering system comprises a buffering assembly which is fixedly arranged at the bottom of an elevator shaft and used for preventing an elevator car from making rigid contact with the bottom. The buffering assembly comprises a buffering spring arranged on a foundation and a buffering plate supported by the top of the buffering spring, wherein the buffering plate directly faces the bottom of the elevator car, and the buffering spring is a variable-pitch spring. The damping force of the elevator buffering system is gradually increased in the process of buffering the contact between the car and the bottom, increasing of the damping force is faster and gentler compared with a common spring, and therefore descent buffering smoothness and sufficient damping force are achieved. Thus, compared with the prior art, the buffering stroke and the gradual variation elastic coefficient can be increased, and a technical scheme for automatically adjusting the key performance parameter of spring force can be obtained. The elevator buffering system can be applied to a high-speed elevator, can be dynamically applied at any time, effectively improves the comfort and reliability before the car makes contact with the bottom or at the movement when the car makes contact with the buffering assembly, and improves the safety performance of the elevator.
Owner:张家港市欧微自动化研发有限公司

Buffer device for composite damping force of elevator

The invention discloses a buffer device for a composite damping force of an elevator. The buffer device comprises a buffer component and a magneto-rheological damping component which can be connected with the buffer component in a forward direction and a reverse direction and forms damping. By combining variable forward damping intervention at the later buffer stage of abnormal falling of an elevator car with elastic buffer at the earlier stage, the buffer device disclosed by the invention is suitable for high-speed elevators, and has an effect of being dynamically applied at any time, so that the comfortability and the reliability before the elevator car touches the bottom and at the moment when the elevator car touches the buffer component are effectively improved; meanwhile, before the buffer when the car touches the bottom is finished, the connection of the damping component is restored to play a role in limiting the speed of resilience, and steady resilience is ensured; parameters of magneto-rheological fluid are adjusted according to falling parameters of the elevator car, and if the falling speed is high, a bigger resilience force can be caused, and the power-on current of the magneto-rheological fluid is intensified so as to increase the restored damping force; meanwhile, during damping restoration, the viscosity of the magneto-rheological fluid can also be adjusted so as to ensure the resilience to be steady and slow.
Owner:张家港市欧微自动化研发有限公司

Double-layer alkali-resisting separation membrane support material and preparing method thereof

ActiveCN106582313ASolve the problem that it cannot be used in an alkaline environment for a long timeEffective tangleSemi-permeable membranesFibre typesHardnessSupport materials
The invention discloses a double-layer alkali-resisting separation membrane support material and a preparing method thereof. The double-layer alkali-resisting separation membrane support material comprises a coating layer and a support layer, and is prepared by spunlace and hot rolling calendaring. A thin diameter polypropylene fiber and a meldable fiber are adopted as raw materials by the coating layer, a thick diameter polypropylene fiber and a certain amount of meldable fiber are adopted as the raw materials by the support layer, through the steps of beating, pulp forming and the like, the raw materials are conveyed by different pulp supply systems to double-layer forming wet method equipment to prepare the pulp into a net respectively, and the double-layer alkali-resisting separation membrane support material is formed after spunlace and hot rolling calendarin. The double-layer alkali-resisting separation membrane support material adopts the technology, solves the problem that the double-layer separation membrane support body is poor in alkali resistance, prone to separated layers, low in strength, poor in flexibility and the like, and the double-layer separation membrane support material with an excellent alkaline resistant property, good interlayer binding force, a stable shape and state and moderate hardness and softness is prepared at low hot rolling pressure and temperature.
Owner:FOSHAN S L P SPECIAL MATERIALS +1

Constraint curved surface multi-resolution control preprocessing method

ActiveCN110335357ACompact control functionSimplified detection method3D modellingLeading edgePretreatment method
The invention provides a constraint curved surface multi-resolution control preprocessing method, which comprises the steps of grid size calculation, boundary line reconstruction, boundary surface reconstruction and boundary surface grid optimization. The method comprises the following steps: researching the approximation degree of a reconstructed boundary to the surface of a reservoir, controlling a reconstruction process by adopting an energy functional, and proposing a concise control function; calculating the grid size of each level of element according to the level progressive sequence ofthe angular points, the boundary lines and the constraint surfaces; and realizing reconstruction of a boundary line and a constraint surface according to grid size control. In-plane point distribution and triangulation are realized by adopting a model structure improved leading edge propulsion method. A Voronoi diagram protection area is adopted to realize processing of complex limiting conditions, and a surface triangular mesh optimization method is researched, and a Laplacian algorithm is improved, so that fairing of a spatial curved surface is realized. According to the method, the qualityof the constraint surface is improved, and the quality of the grid is further improved.
Owner:中国自然资源航空物探遥感中心 +1

Elevator damping device with adaptability

The invention discloses an elevator damping device with adaptability. The elevator damping device comprises a magnetorheological damping body and a control system. Parameters of magnetorheological fluid are regulated according to parameters in an abnormal falling process, if the falling speed is higher, the electrification current is increased, and the magnetorheological fluid is thickened for increasing the damping force, in addition, the damping force is gradually increased in the bottom touching process of an elevator life car body, meanwhile, the electrification current can be reduced after the speed of the elevator life car body is decelerated in the damping process, a gradually decreased damping force is formed, the damping is fast and gentle combined with the general hydraulic damping and the damping of an ordinary spring, and the damping force is adjustable, so the elevator damping device can be applicable to high-speed and low-speed elevators, the descending buffer smoothness and the sufficient variable damping force are realized, and in addition, the any-time dynamic application effects are achieved, so that the comfort and the reliability before the elevator life car body touches the bottom and at the moment of making contact with a buffer assembly can be effectively improved, and the safety performance of the elevators is improved.
Owner:CHONGQING HEHANG TECH

Design method of energy-regenerative suspension power generator power based on shock absorber speed features

The invention relates to a design method of energy-regenerative suspension power generator power based on shock absorber speed features, and belongs to the technical field of an energy-regenerative suspension. The design method is characterized in that for vehicles with good running smoothness, the automobile energy-regenerative suspension power generator power is designed through the analysis and the processing on test data according to the installing angle of an original vehicle-mounted shock absorber, a suspension lever ratio and a damping force array and a displacement array measured by damping feature tests of the original vehicle-mounted shock absorber at the shock speed. When the method provided by the invention is used, the energy-regenerative suspension power generator power can be accurately and reliably designed; the optimum power design value of an energy-regenerative suspension power generator can be obtained, so that the energy-regenerative suspension achieves the best damping matching; the vehicle running smoothness is improved; the design and test cost of the energy-regenerative suspension power generator can be reduced; the product development speed is accelerated; and a reliable design method is provided for the vehicle energy-regenerative suspension power generator power design.
Owner:SHANDONG UNIV OF TECH

Underwater hexapod robot gait generation and conversion method based on CPG-Hopf network coupling algorithm

The invention designs an underwater hexapod robot gait generation and conversion method based on a CPG-Hopf network coupling algorithm, and aims at solving the problem that a hexapod robot coordinates the actions of legs in the movement process and improves the smoothness of the actions during gait conversion. Most of existing gait generation methods are based on a model method and a behavior control method, the controllability of actions is not high, and the actions are not high-intelligence behaviors. The CPG-Hopf network coupled oscillator simulates the mechanism of rhythm motion generated by animals and is applied to control of the robot, and the CPG-Hopf network coupled oscillator has the advantages of being high in controllability, more stable and higher in motion efficiency. Meanwhile, a CPG-Hopf network coupling algorithm is optimized on the basis of a CPG-Hopf network coupling oscillator, interpolation calculation is conducted on key parameters in the CPG-Hopf network coupling algorithm through linear interpolation, the underwater hexapod robot is more stable and smoother during gait switching, and therefore the situation that the joint angle of a middle arc-shaped leg changes suddenly is avoided, and the stability and smoothness of the robot are improved. And the mechanical and control system of the robot is impacted, so that the structural safety of the underwater hexapod robot is ensured.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Noninvasive blood vessel blocking clamp capable of being bent freely

InactiveCN105615944AImprove buffering effectGuaranteed linear continuitySurgical forcepsEngineeringBlood vessel
The invention discloses a noninvasive blood vessel blocking clamp capable of being bent freely. The noninvasive blood vessel blocking clamp comprises a handle and a jaw controlled by the handle to act; the noninvasive blood vessel blocking clamp is structurally characterized in that the handle comprises a fixed handle body and a movable handle body, the jaw comprises a movable clamp body and a fixed clamp body, metal tubes are connected between the fixed handle body and the fixed clamp body, and flexible transmission parts are connected between the movable handle body and the movable clamp body. A guide casing pipe is fixedly connected with the fixed handle body, and one end of the flexible transmission part extends into the guide casing pipe and fixedly connected with a union joint which is coupled to the end of the movable handle body; the other end of the flexible transmission part is fixedly connected with a guiding union joint located in the fixed clamp body, the guiding union joint is further connected with the movable clamp body through a transmission connecting piece, and the two ends of the transmission connecting piece are connected with the guiding union joint and a movable clamp body shaft respectively. The noninvasive blood vessel blocking clamp can be changed into various shapes adapted to the surgery environments according to actual requirements and can further achieve smoothness of control moment transmission, linear continuity of clamping motion of the jaw is guaranteed, and difficulty of surgery conducted by a surgeon is lowered.
Owner:美茵(北京)医疗器械研发有限公司

Two-shaft type two-gear electric car speed changer and electric car

The invention discloses a two-shaft type two-gear electric car speed changer. The two-shaft type two-gear electric car speed changer comprises a motor, an input shaft assembly, an output shaft assembly and a differential assembly which are in transmission connection sequentially. The input shaft assembly comprises an input shaft, a first-gear driving gear, a second-gear synchronizer and a second-gear driving gear; the first-gear driving gear is fixed to the input shaft, and the second-gear synchronizer and the second-gear driving gear are made into a whole and then arranged on the input shaftin a sleeving mode; the output shaft assembly comprises an output shaft, a first-gear driven gear, a first-gear synchronizer and a second-gear driven gear; the output shaft is sleeved with the first-gear driven gear; and the first-gear synchronizer and the second-gear driven gear are both fixed to the output shaft. The invention further discloses an electric car comprising the two-shaft type two-gear electric car speed changer. The problems that an existing electric car is not provided with a speed changer or only provided with a single-gear speed changer, and has certain limitations on powerperformance, economical performance, climbing gradient and acceleration performance are solved.
Owner:NINGBO SHANGZHONGXIA AUTOMATIC TRANSMISSION +1

Preparation process of anti-deformation smooth wig

The invention discloses a preparation process of an anti-deformation smooth wig and belongs to the field of wig preparation. According to the preparation process, by means of the coordinating action of amino modified polydimethylsiloxane and diethylene glycol monobutyl ether on imidazoline-ammonium-salt and diffusing action of polyaminoamide of unsaturated polybasic carboxylic acid and fatty alcohol polyvinyl chloride on imidazoline-ammonium-salt, imidazoline-ammonium-salt is adsorbed on the surfaces of wig hairlines in a film shape, the positive ion activity of imidazoline-ammonium-salt is improved, imidazoline-ammonium-salt is enduringly adsorbed on the surfaces of the wig hairlines, and the static electricity of the wig hairlines is restrained, so that the wig hairlines are smooth. By means of the interaction of elastin, avocado oil, jojoba oil, oat and squalane and interworking of love-in-idleness and jojoba oil, the scale layers of the wig hairlines can be restored, the firmness of the wig hairlines is improved, the wig style is not likely to deform, the uvioresistant capacity of the hairlines is improved, the softness and smoothness degree of the hairlines are improved, hairend splitting is avoided, and the wig style is kept enduringly.
Owner:安徽美源发制品有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products