34results about How to "Avoid readjustment" patented technology

The present invention is an intelligent control system and method for small and medium-sized hydropower stations. It is provided with a remote control layer, a station control layer, and at least one single unit control layer, wherein the single unit control layer is provided with an LCU layer and a sensor layer. The LCU layer is composed of at least two functional LCU controllers, each of which is connected to a sensor group at the input of the functional LCU controller. network, forming the LCU layer, the first communication end of the station control layer is connected to the EtherCAT real-time Ethernet, and the second communication end is connected to the remote control layer; the control method of the intelligent control system of the small and medium-sized hydropower station It is an intelligent control system for small and medium-sized hydropower stations that adopts a publish / subscribe mechanism to establish a unified information platform for the whole station to realize the sequential logic control and synchronous chain adjustment control functions of the intelligent hydropower station control system.

The invention discloses a workpiece clamp and a knife grinding machine. The workpiece clamp comprises a machine base, a collet, a regulation mechanism and a drive mechanism. The machine base is provided with a guide hole. Multiple installation holes are formed in the hole wall of the guide hole. The multiple installation holes are distributed in the circumferential direction of the guide hole. Thecollet is arranged in the guide hole and can reciprocate along the guide hole. Multiple axial telescopic seams are formed in the clamping end of the collet. The clamping end of the collet is segmented into multiple clamping petals through the multiple axial telescopic seams. A wedge-shaped protrusion is arranged on the outer side of each clamping petal. The regulation mechanism comprises multipleregulation parts which are connected with the installation holes and can be used in cooperation with the collet to regulate the roundness of the collet. The drive mechanism can drive the collet to reciprocate along the guide hole. The knife grinding machine comprises the workpiece clamp. The workpiece clamp is adjustable in precision and good in retainability, good precision is still kept under the repeated knife releasing and pulling actions, it is avoided that regulation is conducted again, the production efficiency is improved, and therefore the negative phenomenon that the precision retainability is poor is improved.

The invention relates to a multi-user television and a management method thereof, wherein the multi-user television management method comprises: displaying a user access interface; receiving user access information; loading the user setting corresponding to the user access information into the television. The method provides a multi-user access mechanism for the television, and user can refer to self user access information and download suitable display setting parameters to avoid readjustment in watch. Additionally, the invention can distribute different application rights for users according to the user access information to support the management on the television.

The invention relates to a production process for PSL-2 grade non-tempered N80 steel grade oil casing pipes, comprising the following processing steps: step (1) of heating pipe blanks in an annular furnace at 1200-1280 degrees centigrade for 3-3.5 h; step (2) of punching the heated pipe blanks with a puncher, and rolling to obtain coarse pipes with required specification, wherein temperature of coarse pipes is not less than 1150 degrees centigrade; step (3) of rolling coarse pipes obtained by punching on a retained mandrel pipe mill until required specification is obtained, wherein final rolling temperature for continuous rolling is not less than 1000 degrees centigrade; and putting rolled coarse pipes on an extracting mill to separate pierced pipes from core rods; step (4) of processing pierced pipes obtained by rolling and detaching with a sizing mill to obtain required outside diameter, wherein inlet temperature of the sizing mill is not less than 880 degrees centigrade, temperature of pierced pipes after sizing is not less than 820 degrees centigrade, and an equivalent dependent variable in a sizing process is not less than 0.4; step (5) of cooling sized pierced pipes in air at 820-800 degrees centigrade for 10-15 s, then atomizing and cooling at 650-800 degrees centigrade, and cooling to room temperature in the air at the last. The process provided by the invention meets demand of API standard PSL-2 grade on impact properties, and prevents pipes bending, deforming and cracking in a re-tempering process.

The invention relates to a drawing method for a power distribution wiring diagram of an energy utilization information collection system. The method comprises the steps of 1, analyzing an XML document to obtain original data of each graphic primitive, recording graphic data of zooming or rotation operation, performing comparative calculation on the original data of the graphic primitives and the graphic data to obtain a zooming coefficient of the graphic primitives, and performing geometric calculation to obtain drawing center point coordinates of the graphic primitives; 2, based on a canvas API, if a graphic primitive rotation angle is 0, calculating absolute coordinates of the graphic primitives; if the graphic primitive rotation angle is not 0, calculating relative coordinates of the graphic primitives; storing new graphic primitive input parameters obtained by calculation in an object array; and 3, traversing the object array, and drawing graphic primitive object elements one by one. According to the method, the defects of high error probability of graph modification, low page loading speed and the like of an existing drawing method are overcome; the page loading speed is increased; and convenience is brought for system maintenance personnel to draw and modify the graph.

A method for real-time planning of a maneuvering target of a spacecraft in a moving coordinate system. First, the initial calculation of conventional attitude maneuvering planning is performed to obtain the initial quaternion and maneuvering planning parameters of the target moving coordinate system relative to the satellite orbit system, and then in each control cycle according to Maneuver planning parameter information, carry out real-time planning pre-calculation of conventional attitude maneuver planning, and obtain pre-calculation results. Finally, in each control cycle during the maneuver process, according to the real-time direction cosine matrix of the target moving coordinate system relative to the orbit system, the target moving coordinate Calculate the angular velocity of the real-time planning relative to the inertial system attitude quaternion and the real-time planning relative to the angular velocity of the inertial system, and complete the real-time planning of the spacecraft for the maneuvering target of the moving coordinate system.

The disclosure provides a method and device for updating connection parameters of a Bluetooth low-power device. The method includes: when it is detected that the local remote control mode is switched, sending a prompt message to the controlled device to switch the remote control mode of the Bluetooth remote control device, so that the controlled device The device generates a connection parameter update request according to the prompt message, and sends it to the Bluetooth remote control device. The connection parameter update request carries the effective time point of the connection parameter, which is earlier than the default effective time point; Each connection interval monitors whether the connection parameter update request sent by the controlled device is received locally; when the connection parameter update request is detected, a response for agreeing to update the connection parameters is sent to the controlled device; when the effective time of the connection parameter When arriving, update the connection parameters between the local and the controlled device. To sum up, the technical solution of the present disclosure can improve the update speed of the connection parameters by improving the response speed of the Bluetooth remote control device.