68results about How to "Improve accurate control" patented technology

The disclosed intelligent power-saving protective device for motor comprises: a primary power circuit with output end connected with the input of following two circuits, a switch power circuit with output end connected with input end of all following members, a power drive circuit with input end connected with the PWM generating circuit and microprocessor and the switch power, a microprocessor with input end connected all of the power drive circuit, protective circuit, the power detection, the parameter controller and the switch power circuit; a PWM generating circuit, a protective circuit, a power detection circuit, a function extension interface, a parameter setting controller, and a display. This invention is convenient and reliable.

The invention relates to a multifunctional automatic fish-searching raft fishing pole-supporting device and a raft fishing pole-supporting device front bracket structure. The device and the structure are used for helping a person raft fishing to reduce the manually holding time of a fishing pole and for reducing the dependence of fishing line casting and retracting on human effort. The device comprises a front bracket, a back bracket, a support, and a control display device. The control display device has a housing. The front bracket is connected with the housing through a front bracket tube, and the back bracket is connected with the housing through a back bracket tube. A fishing line gap is formed in the pole supporting face of the front bracket. A stepper motor, a gear, a gear shaft, a main pressure rubber line wheel and an auxiliary pressure rubber line wheel are arranged in the inner cavity of the front bracket. The main pressure rubber line wheel is fixed on one end of the gear shaft, and the gear is fixed on the other end of the gear shaft. The stepper motor is engaged with the gear through an output shaft gear. The auxiliary pressure rubber line wheel is arranged on a frame performing linear orbit movements. The frame is pressed by a spring with one end pressed against the front bracket body, in the direction along a linear orbit. With the device and the structure provided by the invention, a line outlet speed is stable, the weight of raft fishing sinkers is reduced, and the capacity of accurate control over line outlet length is improved.

The invention provides a secondary water supply equipment control method and system based on a model. The secondary water supply equipment control system comprises a water supply pipe network water outlet pressure detection meter, a controller, a variable-frequency governor and a pressurization water pump, wherein the water supply pipe network water outlet pressure detection meter, the controller, the variable-frequency governor and the pressurization water pump are electrically connected in sequence. The secondary water supply equipment control system further comprises a user water consumption port flow meter. The output end of the user water consumption port flow meter is electrically connected with the input end of the controller. The user water consumption port flow meter accurately calculates the water consumption quantity of a user water outlet and inputs flow data into the controller. The controller builds a water supply model according to the flow data and corresponding time, controls frequency changes of the variable-frequency governor according to the flow value at each time point in the model, and then controls the rotation speed of the pressurization water pump. The secondary water supply equipment control system realizes high-accuracy control and a higher response speed in the secondary water supply equipment control process by modeling the water supply data, saves water and electricity, better avoids overpressure of a water supply pipe network, guarantees the safety of the water supply pipe network and provides better water consumption experience for a user on the water consumption side.

The invention relates to a production apparatus and an extrusion technology of a novel clad pipe. The production apparatus comprises an extrusion production line apparatus for production of an inner layer and an external layer of an enhanced clad pipe, winders for winding and preheating a long fiber strip, a center locating frame for controlling a fibrous strip winding to cause tilt of an inner pipe, and a heating box for heating the inner pipe wound with the fibrous strip. According to the invention, two winders are configured between an inner pipe extrusion line and an external layer extrusion cladding die head and used alternately; when a fibrous strip on one winder is using up, the other winder is initiated rapidly to ensure continuous and stabilized production of the enhanced clad pipe. In the invention, a winding packaging technology is upgraded and reconstructed to combine with a cladding double-layer extrusion technology. A foreign complex technology requiring a special windercan be substituted to raise operation convenience, promote generalization of the technology and fill domestic technical blank of continuous fiber winding enhanced clad pipe. Therefore, the technologyof the invention is suitable for industrialized popularization.