5results about How to "High accuracy requirements" patented technology

This invention discloses a distributed adaptive fault-tolerant control method and system for nonlinear inline systems, relating to the field of distributed control technology for nonlinear inline systems. The method includes: for each subsystem in the nonlinear inline system, constructing the actual output of each actuator in the subsystem based on the fault type of the actuator; the nonlinear inline system includes several subsystems; for each subsystem, constructing a local objective function, an error optimizer, an auxiliary system, high-gain parameters, and a control law, and generating an optimal error trajectory based on the local objective function and the error optimizer. At the upper level, this invention designs an error optimizer to generate the optimal error trajectory based on a local objective function that converges to zero; at the lower level, it designs a trajectory tracking fault-tolerant controller with the help of an auxiliary system, employing a dynamic high-gain approach to adaptively handle the effects of uncertain parameters, actuator faults, and unknown strong inline coupling.

The present invention relates to a grinding device and method for grinding the thread groove of a screw with a profiling magnet, comprising a horizontal lathe body and a mobile grinding device, wherein the mobile grinding device comprises a profiling magnet, a motor, a deep groove ball bearing, a belt, a sleeve, and a mobile support frame, wherein the mobile support frame is driven by a slide box to move longitudinally on the horizontal lathe body; the mobile support frame is connected to a sleeve through a deep groove ball bearing, the sleeve is fixedly connected to the profiling magnet, the motor is fixed to the mobile support frame, the motor drives the belt, and the belt drives the sleeve to rotate; the horizontal lathe body clamps and fixes the screw to be processed, and drives the screw to be processed to rotate. The advantages are: large grinding area, high efficiency, compact structure, not easy to heat up, cost saving, low stress, the spiral surface and two side surfaces of the screw to be processed can be ground multiple times, the grinding effect is good, and it is especially suitable for precision instruments requiring ultra-precision processing, and occasions with extremely high requirements for transmission smoothness and accuracy.

The invention relates to the technical field of power grid data management, in particular to a power distribution network user side active first-aid repair management platform and management method, comprising an acquisition end, an equipment end and a cloud terminal; the acquisition end comprises a fault diagnosis module, a positioning module and a signal transmission module; the fault diagnosis module is used for monitoring power grid line faults in real time, performing hierarchical setting based on station, line, transformer and household archives and topological relations, and recording in the form of a single coordinate point; the cloud terminal comprises a signal receiving module, a signal regulation module, a signal management module, a signal processing module and a network data transmission module; the signal processing module comprises a fault management unit, a work order page unit, a work order distribution unit, a work order real-time processing unit, a work order query unit and a data storage unit. According to the invention, the efficiency of cloud network fault monitoring is improved, the workload and operation difficulty of field personnel are reduced, the working efficiency is improved, the working quality and safety are ensured, the effect is remarkable in the trial operation period, and the method has very high popularization value.

The utility model discloses an anti-mistaken-dismounting noodle press which comprises a noodle press main machine, an output connecting end face is arranged on one side of the noodle press main machine, and an output connecting hole and a safety hole are formed in the output connecting end face. The accessory mechanism comprises a feeding connecting end and an accessory connecting end, and the accessory connecting end is rotationally connected with the output connecting hole; the safety cover comprises a discharging connecting end, and the discharging connecting end is connected with the feeding connecting end; the locking mechanism comprises a lock rod and a lock rod reset piece, the lock rod is arranged in the accessory mechanism in a sliding mode, one end of the lock rod faces the safety hole, the other end of the lock rod faces the safety cover, and the lock rod reset piece is used for providing elastic force for the lock rod to slide towards the safety cover; the discharging connecting end is further provided with an outwards-protruding triggering piece, and when the safety cover is connected with the accessory mechanism, the triggering piece drives the lock rod to slide into the safety hole, so that locking between the main machine of the noodle press and the accessory mechanism is achieved.

The invention discloses a special pH measuring device for a generator internal cooling water system and a working method thereof, comprising a flow meter, a conductivity flow cell, a hydrogen conductivity flow cell, a degassed hydrogen conductivity flow cell, a flow regulating valve, a multi-channel conductivity meter, a PLC control panel, a color-changing cation exchange column, a carbon dioxide remover and an electric regeneration cation exchanger, wherein the flow regulating valve and the flow meter are installed on a sampling pipeline led out of a water outlet pipeline of a generator internal cooling water cooler, and the flow regulating valve and the flow meter, the conductivity flow cell, the electric regeneration cation exchanger, the color-changing cation exchange column, the hydrogen conductivity flow cell, the carbon dioxide remover and the degassed hydrogen conductivity flow cell are sequentially connected according to the water flow direction; the conductivity flow cell, the hydrogen conductivity flow cell and the degassed hydrogen conductivity flow cell are respectively connected to the multi-channel conductivity meter, and the multi-channel conductivity meter is connected to the PLC control panel. The invention has a wide range of applications and can be used for a fixed cooling water system and also for a double water internal cooling system.