122results about How to "Avoid frequent changes" patented technology

A robot controller includes a force control unit that outputs a correction value of a target track of a robot based on a detected sensor value acquired from a force sensor, a target value output unit that obtains a target value by performing correction processing on the target track based on the correction value and outputs the obtained target value, and a robot control unit that performs feedback control of the robot based on the target value. Further, the force control unit performs first force control when an external force direction indicated by the detected sensor value is a first direction, and performs second force control different from the first force control when the external force direction is a second direction opposite to the first direction.

The invention relates to the field of laser application, in particular to a laser flight cutting method and system. A CAM system generates a flight cutting moving trajectory with multiple cutting paths, wherein characteristics of the machining contour of the same cutting path are the same. A laser cutting head is controlled to quickly move to the end point of each cutting path from the start point of the cutting path along the flight cutting moving trajectory, when the laser cutting head moves to the start point of the machining contour of each cutting path, lasers are started, when the laser cutting head moves the end point of the machining contour of each cutting path, the lasers are stopped, the direction of the laser cutting head is prevented from being frequently changed between different machining contours or the laser cutting head is prevented from pausing, machining efficiency and cutting quality are improved, the phenomena that right angles of cut squares are not straight, and cut circles are not circular are not even caused, and cost can be saved.

The invention discloses a control method for an inverter cooling fan. The method comprises the following steps: detecting the real-time temperature of all power devices of an inverter in the running process; selecting the maximum real-time temperature of all the power devices; if the maximum real-time temperature exceeds the set over-temperature value of each section and the time that the maximum real-time temperature continuously remains exceeding the set over-temperature value reaches the corresponding set delay value, increasing one step for PWM (Pulse-Width Modulation) duty ratio, and increasing the rotating speed of the fan; if the maximum real-time temperature is less than the set low-temperature value of each section and the time that the maximum real-time temperature remains being less than the set low-temperature value reaches the corresponding set delay value, decreasing one step for the PWM duty ratio, and decreasing the rotating speed of the fan; if both the aforementioned determining conditions are not met, maintaining the current rotating speed of the fan. The method is applied to the cooling of the power devices of the inverter and can solve the problems in the prior art, such as that the rotating speed of the fan frequently varies, the temperature reference value is not easy to reasonably set, the fan easily runs at over-temperature if the temperature varies a lot, and a plurality of preset temperature/ rotating speed curves are provided and difficult to realize. The invention further discloses a control device for the inverter cooling fan.

The general purpose of the present invention is to provide a new ostomy drainage system, which generally improves on many of the disadvantages of the ostomy devices mentioned above. To attain this, the present invention generally comprises an ostomy bag (or pouch) connected by tubes to a container. The container is then connected via tubes to a vacuum device whereby the contents of the ostomy bag can be suctioned into the container. This prevents the frequent changing of the ostomy bag thereby improving upon the sanitation and convenience of the ostomy patients.

The present invention provides a road crossing signal dynamic regulation method based on online traffic simulation. The method comprises: calculating the current traffic operation parameters in the current signal timing scheme according to the current traffic flow data; performing signal optimization timing calculation according to the current signal timing scheme and the traffic data, and obtaining an optimized signal timing scheme; performing traffic simulation aiming at the optimal signal timing scheme, and obtaining simulated and outputted traffic operation parameters; and finally, comparing the simulated traffic operation parameters with the current traffic operation parameters, if the simulated traffic operation parameters exceed a presetting threshold, outputting the optimal signal timing scheme, and performing road crossing signal timing through adoption of the optimal signal timing scheme. The road crossing signal dynamic regulation method, device and system are able to provide different signal timing schemes for signal lights at the crossing aiming at road traffic flow at different time periods so as to improve the passing efficiency of a crossing and ensure that the crossing is able to operate in the optimal mode all the time in the condition that the road crossing operates at the optimal timing scheme.

Coil strapped nails and a nailing device using coil strapped nails are provided. The coil may be provided with steel nails (1) having a length of 14 to 25 mm and a shaft diameter of 2 to 3 mm. The nails are held by wires (2,3) 6.5 to 7.5 mm apart, wherein the wires are preferably quenched and tempered. In the center of the coil a wrapping sleeve may be provided having due clearance for the nail heads.

This invention discloses a realization method for carrying service transmission and MBMS service, in which, said service transmission load realization method includes: presetting a pre-designed time section for determining the loading ways of service transmission calculating the user number for receiving multimedia broadcast/multicast service in the local area in said pre-designed time section or at the end, judging if the user number is in conformity with the pre-designed rule according to the calculation result, if so, a first transmission load way is applied to carry said multimedia broadcast/multi-cast service, otherwise a second way is applied. Said MBMS realization method is to use said service transmission load method to set up the service load.

The invention makes an output sharing of an engine and an electric motor proper so as to suitably drive a load. When a throttle opening degree variation amount ΔV is within a ΔV1, an engine E can drive a power generator G at a rated revolution speed. A switching circuit 28 is switched in such a manner as to charge a battery 27 by a generated power. When the opening degree variation amount ΔV becomes larger than the ΔV1, a power assist of operating the power generator G as the electric motor is set to be standby. When the opening degree variation amount ΔV is more than ΔV2 (>ΔV1), the power assist is started. In the power assist, an angle advance amount is increased. When acceleration is insufficient, it is possible to further increase a conduction angle in stages.

A pivoting joint for pivotally joining a brake head to a brake beam of a railway car allows the brake head to modify its radial and lateral direction with a controlled degree of rotation with respect to a bogie wheel, allowing the brake shoe to adapt to the wheel contour, and achieving an adequate force distribution along the brake shoe, and thus optimizing the utilization of the brake shoe material.

The invention relates to the technical field of industrial automation, in particular to a scanning cutting method for continuous machining of multiple circles. The scanning cutting method for continuous machining of the multiple circles comprises following specific steps that a pattern needing to be machined is selected; the first sub-process is executed, and determining the machining direction of each circle is the purpose; the second sub-process is executed, and generating a scanning line is the purpose; and the processes are finished. Compared with the prior art, the special demands and characteristic that the multiple circles are continuously machined on a panel in the laser cutting industry, the scanning cutting method used for continuous machining of the multiple circles is provided, and the problems existing in the prior art are solved.

The embodiment of the invention provides a DHCP address allocation method and device. The method comprises the following steps that: a media access control (MAC) address first message carrying a client and sent by the client is received, the first message is used for requesting an internet protocol IP address from each server, the server determines whether the IP address corresponding to the MAC address is allocated to the client before according to the MAC address carried in the first message, and if so, the server continues to allocate the IP address allocated before to the client; and if not, the server allocates the idle IP address which is not used locally to the client. According to the embodiment of the invention, the server queries the local IP address allocation record before allocating the address, and can continuously allocate the IP address used by the client to the client, thereby ensuring that the client in networking can keep the uniqueness of the address, and providingconvenience for a series of services and management functions.

The invention provides an electroplating current optimization method applicable to a continuous electrotinning unit. The method comprises the following steps: (1) making a steel coil production plan according to plating thickness and carrying out continuous production of steel coils; (2) starting all the electroplating passes of the unit when producing a tin plate with plating thickness of no less than 5.6 g/m<2>, and starting half of the electroplating passes of the unit when producing a tin plate with plating thickness of no more than 2.8 g/m<2>; (3) when changes of plating specifications cause reduction of total current, maintaining the number of started electroplating passes to be unchanged while changing current distribution of each pass to reduce total current for front and rear steel coils with plating thickness in a same divided interval, and halving the number of plating baths while changing current distribution of each pass to reduce total current for front and rear steel coils with plating thickness in different divided intervals; and (4) when speed reduction of the unit causes reduction of total current, maintaining the number of started electroplating passes to be unchanged while changing current distribution of each pass to reduce total current. The method provided by the invention takes high current density distribution principles into consideration, employs a small number of plating baths for thin strip steel and enables distribution current density to be high, thereby guaranteeing electroplating quality.

The invention discloses an online liquid level monitoring and automatic alarming method, system and device. The method comprises the following steps: S1, reading a plurality of preset collection periods, communication periods, liquid level parameters and alarm return difference parameters; S2, acquiring acquisition liquid levels D, comparing the acquisition liquid levels D with the liquid level parameters, and automatically adjusting an acquisition period and a communication period by utilizing comparison results based on a preset period adjustment strategy; and S3, acquiring a liquid level movement trend and a fluctuation range of the collected liquid levels D according to the plurality of obtained continuous collected liquid levels D, comparing the fluctuation range of the collected liquid levels D with each alarm return difference parameter to obtain the liquid level state of the fluctuation range of the current collected liquid level D, and sending alarm information based on a preset liquid level alarm strategy according to the liquid level state and the adjusted communication period. Alarm information can be sent in time, manual guard is reduced, the electric quantity of a battery can be effectively saved, and the service life of monitoring equipment is prolonged.

The invention provides a remarking method and device and a mobile terminal. The method comprises the steps of obtaining a head portrait updating frequency of a target session object within a preset duration when it is detected that information of the target session object is added to a communication application program and a remark setting operation for the target session object is not received; when the head portrait updating frequency is greater than a preset frequency threshold and the target session object is a preset session object, displaying remark prompt information; acquiring a targetimage selected by the user under the condition of receiving a remark setting operation executed on the target session object by the user according to the remark prompt information; and setting the target image as a target remark head portrait of the target session object. According to the method and the device, a user can quickly identify the remarked session object, and the user experience is improved.

The invention relates to the power system operation technology, and particularly relates to a dynamic reconstruction loss reduction method for a power distribution network based on a second-order conerelaxation method. The method gives consideration to the load characteristics of different functional areas in the power distribution network. A power distribution network dynamic reconstruction model is established with the aim of reducing the network loss, a power flow equation is converted into a convex optimization form through second-order cone relaxation, and a global optimal solution is quickly obtained, so that the network loss of the power distribution network can be considerably reduced and the voltage quality of the power distribution network can be improved through a small numberof switch changes. The method also solves the problems of unbalanced power flow distribution, node voltage collapse, over-high network loss and the like possibly caused by space-time distribution difference of loads in the operation process of the power distribution network.

The invention provides a method and a device used for synchronization after the restart of an FC (fiber channel) exchanger. According to the invention, after the FC exchanger is restarted, when a neighbor FC exchanger establishing an adjacency relationship with a host computer before the host computer is restarted is discovered, the adjacency relationship with the neighbor FC exchanger is maintained immediately; the neighbor FC exchanger is requested to carry out the initialization synchronization of an LSR (link state record) on the host computer in a condition that the adjacency relationship is kept; therefore, a route from other FC exchanger to the host computer can be prevented from being canceled, so as to guarantee that the route from the other FC exchanger to the host computer is not changed; moreover, the FC exchanger subjected to the restart can learn the same LSR before the restart of the host computer through the initialization synchronization of the LSR; therefore, a recalculated route from the host computer to the other FC exchanger is also the same before the host computer is restarted; further, the FC exchanger subjected to the restart triggers route calculation after the initialization synchronization is completed; and therefore, the calculated route can be prevented from being frequently changed along with the process of the initialization synchronization.

The invention relates to a vending machine lift. The lift comprises a bottom plate, side plates and belts; the two side plates are arranged at the two side ends of the bottom plate respectively, the two belts are arranged on the side walls of the two sides of a vending machine box body and provided with follower plates, the inner side of each follower plate limits and clamps the side plate at thesame side, and the follower plates can limit the side plates in the vertical direction and the front-rear direction. The installation structure, weighing structure, guiding sliding structure and balance structure of the vending machine lift are improved, and various problems in the prior art are solved; a pickup door of a vending machine can be arranged at any portion of a door body and is in linkage with an anti-theft plate, convenience is provided for manufacturers to carry out assembly and maintenance, and the lift is convenient for people to use.