31results about How to "Realize linear control" patented technology

The invention discloses an ultrathin vehicle-mounted magnetic suspension flywheel battery for an electric vehicle, and a working method thereof. A motor bracket, an axial magnetic flux motor, a flywheel, an inner stator of a five-degree-of-freedom magnetic bearing, a coil and a permanent magnet are coaxially arranged in a shell from top to bottom, and the flywheel consists of an upper layer, a middle layer and a lower layer which are continuous; an upper annular groove is formed in the middle of the upper annular layer of the upper flywheel, the axial flux motor is placed in the upper annular groove, and an annular inner groove, a middle annular cavity and a lower annular groove are communicated and jointly used for placing the inner stator, the coil and the permanent magnet of the five-degree-of-freedom magnetic bearing; and the five-degree-of-freedom magnetic bearing comprises an axial magnetic bearing, a repulsion magnetic bearing, a torsion magnetic bearing and a radial spherical magnetic bearing from inside to outside. The mode that magnetic bearings with different properties are reused is adopted, advantage complementation is achieved, the bearing capacity and control precision of magnetic bearing supporting can be improved, the stability of a flywheel is remarkably improved, and the problem that the loss of a control coil is large due to complex working conditions can be effectively solved.

The invention relates to a jade cervical pillow with synergistic and health-care effects, and belongs to the field of health-care devices. The jade cervical pillow comprises a jade pillow body, a magnet therapy part, a heating part, an LED (light emitting diode) light emitting part and a traditional Chinese medicine bag, wherein the jade pillow body comprises a plane part and a jade arch-shaped part; a cavity is formed between the plane part and the jade arch-shaped part; the magnet therapy part, the heating part, the LED light emitting part and the traditional Chinese medicine bag are arranged in the cavity, the heating part is arranged on the inside wall of the arch-shaped part, the magnet therapy part is arranged between the heating part and the inside wall of the arch-shaped part, the LED light emitting part is arranged on the upper surface of the plane part, and the traditional Chinese medicine bag is arranged between the LED light emitting part and the heating part; the heating part is made of carbon fiber heating wires. By adopting the structure, the jade cervical pillow has the advantages that the optical therapy, magnet therapy, jade component health-care, and Chinese herbal medicine health-care effects are realized; in the use process, the health-care effect is better, and the number of health-care items is more.

The present invention relates to a method used in the field of hydraulic technology, in particular, it relates to a hydraulic cylinder low-pressure linear output implementation method. Said method is characterized by that it utilizes hydraulic cylinder proportion regulation method, when the hydraulic cylinder is worked, it can simultaneously apply pressure to upper and lower two faces of the piston of hydraulic cylinder, and utilizes the pressure difference of upper and lower two cavities of the hydraulic cylinder to produce working pressure so as to implement low-pressure high-accuracy control of hydraulic cylinder. Besides, said invention also provides the concrete steps for implementing said method.

The invention relates to a film type steam generator. The film type steam generator comprises water supply pipelines, a film type evaporation pipe and steam outlet and water return pipelines, wherein the water supply pipelines comprise a main water supply pipeline and a water supply branch pipeline, and supplied water flows to the tail end of the water supply branch pipe from an inlet end of the main water supply pipe; the steam outlet and water return pipelines comprise a main steam outlet and water return pipe and a steam outlet and water return branch pipe; one end of the film type evaporation pipe is connected with the main water supply pipeline or the water supply branch pipeline, and the other end of the film type evaporation pipe is connected with the main steam outlet and water return pipe or the steam outlet and water return branch pipe; steam in the steam outlet and water return branch pipe moves upwards, is output from a high-position steam outlet end and is merged into the main steam outlet and water return pipe, and returned water moves downwards and is merged into the main steam outlet and water return pipe from a low-position water return end; steam in the main steam outlet and water return pipe further moves upwards and is separated from the returned water and finally output from a steam output port, the returned water further moves down and is separated from the steam and finally output from a returned water outlet and merged into a water supply circulation tank, and circular water supply is realized after supplement. The film type steam generator combines advantages of a drum-type boiler and a once-through boiler, overcomes defects of the drum-type boiler and the once-through boiler and has popularization value.

The invention discloses a dimming glass control device and method and a medium thereof, and aims to solve the problem that a control device commonly used at present cannot well meet the requirements of an EC film for the direct current voltage precision and stability. The device comprises a control unit and a main circuit, the control unit is connected with the main circuit and an upper computer and is used for receiving an electric signal of the EC film returned by the main circuit, sending the electric signal to the upper computer and sending a control signal to the main circuit according to the control information sent by the upper computer so as to control the color change of the EC film; and the main circuit comprises an operational amplifier, a first transistor, a second transistor, a first resistor, a second resistor, a third resistor and a fourth resistor, wherein the first transistor and the second transistor work in an amplification region, so that the whole control process works in a linear region, the linear control is realized, and the precision and the stability of the control voltage are further improved on the basis of original control, and the requirements of EC glass for the high precision and high stability of the direct-current voltage are met.

The invention discloses a multi-blade type gas flow adjusting and detecting device and belongs to the technical field of ventilation flow control. The device is characterized by comprising a variable-air-volume butterfly valve, the variable-air-volume butterfly valve comprises a valve cylinder with the two ends open, the bottom edge portions of three or more triangular valve blocks are annularly arranged on the inner wall of the valve cylinder in a hinged mode, the middles of the valve blocks are hinged to the front end of a connecting rod, the rear end of the connecting rod is annularly hinged to a rectifier in an array mode, and a guide sliding hole is formed in the rectifier. The rectifier is sleeved on a hard wire pipe through the guide slide hole; the rectifier is connected with the actuator; a plurality of static pressure holes are annularly formed in the leeside of the rectifier, and a plurality of air inlet holes are annularly formed in the windward side of the rectifier; a first flow sensor and a second flow sensor are respectively arranged in the air inlet hole and the static pressure hole; the first flow sensor and the second flow sensor are connected with the controller through wires, and the controller is connected with and drives the actuator to act. Linear control of the ventilation quantity can be realized through scientific structural design and a control method, and the control precision is greatly improved.