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175results about How to "Avoid damaging effects" patented technology

Remote operating robot fixed time control method based on rapid terminal sliding mode

The invention relates to the technical field of remote operating robot synchronous control, specifically discloses a remote operating robot fixed time control method based on a rapid terminal sliding mode. The method includes: selecting a master robot and a slave robot to form a remote operating system, measuring system parameters of the master robot and the slave robot respectively, measuring position information of the master robot and the slave robot on line, obtaining speed information of the master robot and the slave robot, designing a rapid terminal sliding mode surface, based on the designed rapid terminal sliding mode surface, using the system parameters of the main robot and the slave robot to design a self-adaptive fixed time controller, and using a Lyapunov equation to provide a relational expression between a parameter self-adaptive law, controller parameters, sliding mode surface parameters and system convergence time, thereby determining the controller parameters and the sliding mode surface parameters according to requirements of practical application for system convergence time and a relational expression between the system parameters and the system convergence time. The remote operating robot fixed time control method based on the rapid terminal sliding mode makes up for the defects in control speed and control accuracy of an existing remote operating robot system control method.
Owner:YANSHAN UNIV

System and method for instant messaging

A system and method for user-defined control of the operation and appearance of a computerized instant messaging service and associated user interface is disclosed, providing ease of use, control over presentation and access to instant messaging services, particularly for unsighted and other users requiring assistive technologies. A system and method for user-defined control of operation and appearance of a computerized instant messaging service and associated user interface. A instant messaging (IM) application includes an active sessions list (ASL) comprised of algorithmically ordered identifiers of all communicants in current active chat sessions with the user. The list is presented on the desktop and focused by a predefined first hot-key. In one embodiment, the list is ordered with the identifier appearing at the top of the ASL being associated with the communicant of the most recent incoming unresponded-to IM chat message. By selecting identifiers from the list and activating a predefined second hot-key, chat windows associated with the communicants are opened and focused for receipt of responsive messages from the user. As each new incoming unresponded-to chat message is received, a cue occurs in the ASL which is automatically updated with the identifier for the associated most recent such communicant appearing at the top of the ASL. Chat windows associated with most recently incoming chat messages are selectably precluded from automatically popping up on the desktop. User-selectable algorithmic support varies ordering and content of the identifiers appearing in the ASL, admitting to any desired schema for such ordering and content as effected by the algorithm executing with the IM application. The content of the ASL is generalizable beyond instant messaging windows to include any subset of applications and/or windows appearing in the active windows list of the operating system.
Owner:IBM CORP

Electromagnetically actuated valve for hydraulic motor vehicle brake systems

PCT No. PCT/DE96/02160 Sec. 371 Date Aug. 7, 1998 Sec. 102(e) Date Aug. 7, 1998 PCT Filed Nov. 13, 1996 PCT Pub. No. WO97/28998 PCT Pub. Date Aug. 14, 1997The valve has a seat valve with a hollow-conical valve seat and a closing member in the form of a spherical layer on a longitudinally drilled tappet. An inflow bore communicating with a pressure medium inlet discharges centrally into the valve seat. The largely pressure-equalized tappet is engaged by a magnet armature acting on the seat valve in a closing manner and by a restoring spring acting in the opening direction. The valve embodied in principle as a switching valve is controllable into stable intermediate positions on the basis of the following provisions: the cone angle of the valve seat is at most 90 DEG ; the force at the closing member, originating in the restoring spring, is adapted such that it has a course that decreases monotonously with an increasing valve opening stroke (h); the magnet circuit of the valve is embodied such that the magnetic force (FM) exerted on the magnet armature and transmitted to the closing member is variable in infinitely graduated fashion and has a course that decreases monotonously with increasing valve opening stroke (h), the negative slope of which course is less quantitatively than that of the course of spring force.
Owner:ROBERT BOSCH GMBH

Pneumatic pipeline conveying method and device for business hall

The invention relates to a pneumatic pipeline transmission method of a business hall and a device, belonging to the field of a pneumatic pipeline transmission system which is a modern fast logistics transmission tool. An article is arranged into a transmission carrier when in transmission, such as a special transmission barrel which guarantees that the article is not damaged in the transmission process. The pneumatic pipeline system transmits the article from one working station to another working station in the pipeline, thus not only being capable of effectively guaranteeing the safety of the articles, but also saving the time and improving the working efficiency. But when a transaction with a client is met in an open area, due to the existing inconvenience, the use is influenced, and the reason is that more operation of the client is needed. The content of the invention is as follows: a client-end transmission pipeline of the transmission system is set as an opened port; when the client sends, a transmitter is placed into a client port, a starting switch is triggered, a negative pressure fan arranged on a service-end vertical pipeline is started, the transmitter without changing the before and after placement direction is absorbed to a service working end and falls to a working port with well-placed transmission, the service end takes out the transmitter; when the service end transmits back, the transmitter is placed into a sending port, the starting switch is triggered, and a positive pressure fan arranged at a service-end pipeline port is started; the transmitter is blown to the client port; and a service port is provided with a door which is in closed state all the time when in sending and receiving.
Owner:BEIJING RINRONG TECH

Slurry shield tail brush replacement liquid nitrogen freezing safety protection device and method under high water pressure condition

The invention relates to a slurry shield tail brush replacement liquid nitrogen freezing safety protection device under a high water pressure condition. The device comprises a shield tail shell, a shield tail brush and a duct piece which are arranged from outside to inside; mortar pipes are arranged inside the shield tail shell; the device further comprises at least one set of liquid nitrogen freezing device; each liquid nitrogen freezing device is arranged inside the shield tail shell and located between the adjacent mortar pipes; and each liquid nitrogen freezing device comprises a liquid inlet pipe, a liquid outlet pipe and an annular freezing pipe, wherein the annular freezing pipe is connected between the other ends of the liquid inlet pipe and the liquid outlet pipe. The device has the beneficial effects that the risk of hole drilling in the duct piece and destructive influences on the structure of the duct piece are avoided, the annular liquid nitrogen freezing pipes are arranged at the shield tail and form a liquid nitrogen circulation channel with the liquid inlet pipes and the liquid outlet pipes which are reserved in the middle shield position, circular liquid nitrogen in the channel can rapidly freeze a soil body at the shield tail, impurities like slurry and mortar are prevented from entering a shield machine, the device is easy and convenient to operate, freezing is rapid, and personnel and equipment safety in the shield tail brush replacement process can be effectively ensured.
Owner:CHINA RAILWAY SHISIJU GROUP CORP

Combined and reinforced type corner-protected plastic building formwork

The invention discloses a combined and reinforced type corner-protected plastic building formwork and relates to the technical field of plastic building formworks. The formwork comprises protective corner brackets, press plates are movably connected in the protective corner brackets, the tops of the press plates are fixedly connected with bottoms of multiple support rods which are arranged transversely, upper parts of the support rods are movably connected with reinforcing frames, tops of the support rods are movably connected with bottoms of linkage blocks, outer sides of the linkage blocks are fixedly connected with insides of movable plates, each of two ends of each movable plate is fixedly connected with one side of the corresponding limit block, and bottoms of the limit blocks are fixedly connected with tops of first springs. According to the combined and reinforced type corner-protected plastic building formwork, the structures of the protective corner brackets are made of elastic rubber, vibration of the building formwork during carrying, collision and placement can be reduced, effects of damage of vibration to the building formwork on later splicing is prevented, force produced by collision is buffered by the reinforcing frames, and effects of collision on the building formwork are prevented.
Owner:JIANGSU YUANJIAN PLASTIC DEV
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