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37results about How to "Improve slippage" patented technology

Distributed driving electric automobile torque vector control method based on double-layer control

The invention discloses a distributed driving electric automobile torque vector control method based on double-layer control. The control method comprises the following steps: establishing a vehicle dynamic model, and calculating a tire slip rate by utilizing a Dugoff tire model; establishing a torque distribution controller based on the vehicle dynamic model and the Dugoff tire model, wherein thetorque distribution controller comprises an upper controller and a lower controller; calculating the current drive torque of each driving wheel of the vehicle by the upper controller according to body yawing angular velocity; calculating a compensating torque needed for remaining an ideal slip rate of each driving wheel by the lower controller according to the ideal slip rate of each driving wheel serving as a control objective, and further performing compensation distribution on the driving torque, so that an actual torque is output to the driving wheel, and torque vector control is completed. According to the control method disclosed by the invention, the automobile torque can be effectively subjected to vector distribution, the vehicle driving stability and smoothness are improved, theoperating burden of the driver is obviously decreased, and the driving safety is improved.
Owner:ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Special ultralow temperature cured laser etching conductive silver paste for mobile phone touch screen

The invention relates to a special ultralow temperature cured laser etching conductive silver paste for a mobile phone touch screen. The conductive silver paste mainly comprises the following components: 40%-75% of a conductive function phase, 6-15% of macromolecule resin, 15-35% of a solvent and 3-15% of an additive. The preparation of the silver paste comprises the steps of macromolecule regioncarrier preparation, conductive silver paste preparation and conductive silver paste post-processing. The conductive silver paste can be completely cured under the condition of an ultralow temperatureof 80-110 DEG C, the temperature is reduced by 20-50 DEG C compared with a curing condition of 130 DEG C of the existing conductive silver paste, and shrinkage, folding and deformation of a substratemembrane material during high-temperature curing are reduced. The paste has excellent laser etching performance, and a clear pattern with the line width / line spacing being 30 microns / 30 microns can be etched; the paste has good adhesion on PET, an ITO film, a silver nanowire conductive film, TIO glass and ordinary glass, the pencil hardness is above 2H, and the square resistance can reach up to 20m[Omega] / square@1mil. In addition, the conductive silver paste is sintered and molded at an ultralow temperature, low in production cost, energy-saving and free of halogen, thereby being an environment-friendly product.
Owner:NANO TOP ELECTRONICS TECH

Capitulum radius replacement prosthesis

ActiveCN105193522AIn line with the characteristics of daily behavior sportsImprove stabilityAnkle jointsJoint implantsArticular surfacesHuman anatomy
The invention provides a capitulum radius replacement prosthesis. The capitulum radius replacement prosthesis comprises a capitulum radius and a radius broach, wherein the capitulum radius is in the shape of a circular truncated cone, the end face of the large-diameter end of the capitulum radius serves as the articular surface and is sunk inwards to form a spherical articular cavity, and the sphere center of the spherical articular cavity is located on the axis of the radius broach; a round connecting plane is arranged at the end of the radius broach, the diameter of the connecting plane is identical with that of the small-diameter end of the capitulum radius, and the small-diameter end of the capitulum radius is connected with the connecting plane of the radius broach through a connecting part in a matched mode. The capitulum radius replacement prosthesis accords with human anatomy and daily performance kinetic characteristics and has high stability and safety. Through the improvement of bone cement constituents, biocompatibility between the capitulum radius replacement prosthesis and bone substances is improved, complications such as deviation, looseness, infection and instability do not occur easily, service life is long, and different connecting parts can be adopted according to the conditions of patients to guarantee the optimal using effect of the capitulum radius replacement prosthesis.
Owner:北京威高亚华人工关节开发有限公司

Stereo garage achieving traction drive

The invention discloses a stereo garage achieving traction drive, and belongs to the technical field of stereo garages. The stereo garage comprises a steel structure framework. A lifter framework is mounted in the steel structure framework. A car and a counter-weight are vertically mounted in the lifter framework in a sliding manner. A traction wheel is mounted at the top of the lifter framework.Four lifting steel wire ropes are wound on the traction wheel. Each lifting steel wire rope is correspondingly connected with the counter-weight and the car. Four balance steel wire ropes are arrangedbetween the car and the lifter framework. Two balance pulleys are arranged at each of the four corners of the bottom plane of the car. One end of each lifting steel wire rope is fixed to the top of the lifter framework, and the other end of each lifting steel wire rope is sequentially wound through the balance pulleys at one corner and the other balance pulley located on the same side at anothercorner and then is fixed to the bottom of the lifter framework. The technical problems that the gravity center of the car is not stable, consequently, the traction wheel cannot be used normally, and traction drive cannot be used in the lifting transverse movement stereo garage are solved. The stereo garage is widely applied to stereo garages.
Owner:DAYANG PARKING CO LTD

Road grader front wheel auxiliary driving electro-hydraulic control system and road grader

The invention discloses a road grader front wheel auxiliary driving electro-hydraulic control system and a road grader, and belongs to the technical field of road graders. The road grader front wheelauxiliary driving electro-hydraulic control system and the road grader are used for solving the technical problem that in the prior art, due to the fact that the wheel slip phenomenon is prone to happen under the condition that the foothold of a road grader is quite bad, the construction efficiency is affected. The system comprises plunger pump control valves, plunger pumps, oil supplement pumps,filters, motors, motor control valves, speed reducers, a front driving control valve, a hydraulic oil tank and the like. By means of the connection of components, a front wheel auxiliary driving hydraulic circuit is finally formed, and the driving force is provided for wheel front wheels; and the driving wheel state and driving-wheel-free state are flexibly switched according to the actual usage environment, the road grader can have a two-wheel driving mode, a four-wheel driving mode and a six-wheel driving mode, the road grader wheel slip phenomenon is effectively improved under the conditionthat the foothold is quite bad, and the construction efficiency of the road grader is greatly improved.
Owner:XUZHOU XUGONG ROAD CONSTR MACHINERY

Automatic bucket holding device based on automatic positioning

PendingCN107052008ALock firmlySatisfy the cleaning operationHollow article cleaningEngineeringHooking
The invention discloses an automatic bucket holding device based on automatic positioning in the technical field of garbage bucket washing. The automatic bucket holding device comprises a rotation driving mechanism, an overturning main shaft, an overturning support and a holding unit, and further comprises a negative pressure adsorption unit, a vacuum generator and an automatic positioning mechanism; the holding unit comprises a clamping base and a pair of movable clamping parts oppositely arranged on the clamping base, and the negative pressure adsorption unit is controlled by the vacuum generator to generate negative pressure so that an garbage bucket outer wall can be attracted; the automatic positioning mechanism comprises a deflection air cylinder, a displacement guide rail and a movable limiting base, the movable limiting base is installed on the displacement guide rail in a sliding manner, a cylinder barrel of the deflection air cylinder is hinged to the overturning support, and a piston rod of the deflection air cylinder is hinged to the movable limiting base; and a bucket hooking plate used for hooking the bucket edge of the garbage bucket is arranged on the movable limiting base. Slippage of the garbage bucket in the clamping and overturning process can be thoroughly prevented, any damage to the garbage bucket is avoided, and the clamping effect is stable and reliable.
Owner:YANGZHOU JINWEI ENVIRONMENTAL PROTECTION TECH CO LTD

Data acquisition and transmission equipment for industrial Internet of Things

The invention relates to the technical field of data acquisition and transmission, in particular to data acquisition and transmission equipment for industrial Internet of Things, which comprises a fingerprint machine, a fixing mechanism is mounted on the fingerprint machine, a fastening mechanism is mounted on the fixing mechanism, a locking mechanism is connected to the fixing mechanism, a protection mechanism is mounted on the fingerprint machine, and the locking mechanism is connected to the protection mechanism. A cleaning mechanism is mounted on the protection mechanism, and a scraping mechanism is connected to the cleaning mechanism; under the action of the fixing mechanism and the fastening mechanism, the fingerprint machine and an external fixing frame can be conveniently and stably installed and conveniently disassembled, meanwhile, under the action of the locking mechanism, the fingerprint machine and the fixing mechanism are stably connected and do not slip, and under the action of the protection mechanism, the interior of the fingerprint machine can be conveniently protected; and through the action of the cleaning mechanism and the scraping mechanism, the dust and the sundries in the fingerprint machine can be conveniently scraped and cleaned, and the recognition efficiency is improved.
Owner:优网云计算有限公司

Torque vector control method for distributed drive electric vehicles based on double-layer control

The invention discloses a distributed driving electric automobile torque vector control method based on double-layer control. The control method comprises the following steps: establishing a vehicle dynamic model, and calculating a tire slip rate by utilizing a Dugoff tire model; establishing a torque distribution controller based on the vehicle dynamic model and the Dugoff tire model, wherein thetorque distribution controller comprises an upper controller and a lower controller; calculating the current drive torque of each driving wheel of the vehicle by the upper controller according to body yawing angular velocity; calculating a compensating torque needed for remaining an ideal slip rate of each driving wheel by the lower controller according to the ideal slip rate of each driving wheel serving as a control objective, and further performing compensation distribution on the driving torque, so that an actual torque is output to the driving wheel, and torque vector control is completed. According to the control method disclosed by the invention, the automobile torque can be effectively subjected to vector distribution, the vehicle driving stability and smoothness are improved, theoperating burden of the driver is obviously decreased, and the driving safety is improved.
Owner:ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Fluorescent clothes drying pole

The invention provides a fluorescent clothes drying pole. The pole comprises a pole body and groove openings distributed on the pole body, and the groove openings are coated with fluorescent paint. Hanging object positions are limited by utilizing the groove openings on the pole body, the groove openings are coated with the fluorescent paint, the problems that hanging objects on an original clothes drying pole can easily slip and fall, when faced with breeze, the hanging objects can gather together, so that the hanging objects are dried inconveniently, and the dried objects are inconvenientlyhung are solved. The drying pole has the advantages that the structure is simple, drying is convenient, the hanging objects cannot easily slip and fall, the visual effect is good, and to-be-dried objects can be hung accurately.
Owner:熊家双
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