67results about How to "Improve regulation stability" patented technology

A phase locked loop is disclosed having a phase detector and a controllable oscillator coupled to the detector. A frequency divider is also included in a feedback path of the phase locked loop. The phase locked loop further comprises an evaluation means that facilitates an evaluation of a jitter of the phase locked loop. This allows an on-chip evaluation of the jitter of a phase locked loop to be performed.

The invention relates to the technical field of electromagnetic valves, in particular to an electromagnetic valve with a fluid flow regulation function. The electromagnetic valve comprises a shell and a core. An inner cavity is formed inside the shell. The shell is provided with a first port, a second port and a valve opening. The first port is communicated with the inner cavity. The second port is communicated with the inner cavity through the valve opening. The core is arranged in the inner cavity in the mode that the core can move up and down. The core is composed of a supporting column and a valve arranged at the lower end of the supporting column. The valve is arranged corresponding to the valve opening. A magnetizer is arranged on the supporting column. An electromagnet is arranged on the shell and is arranged corresponding to the magnetizer. A current control device used for regulating the magnitude of current or voltage is arranged on a circuit loop of the electromagnet. An elastic force balancing device is arranged in the inner cavity. The electromagnetic valve has the advantages of being capable of automatically regulating fluid flow in real time according to requirements, reasonable in structural arrangement, high in stability and the like.

The invention belongs to the technical field of optical path adjusting in the optical system, and particularly relates to a rotating direct-driven electric diaphragm. The electric diaphragm comprises a motor and a diaphragm body having an internal cavity. The diaphragm body is provided with a light through hole. The electric diaphragm is characterized in that the internal cavity of the diaphragm body is provided with an adjusting baffle plate and a rotor which is connected with the motor. The rotor is provided with a slide block arranged at the eccentric position. The adjusting baffle plate is provided with a slide groove adaptive to the slide block. The motor is adopted to drive the rotor, and the eccentric slide block on the rotor is arranged in the slide groove of the adjusting baffle plate so that the slide block slides in the slide groove when the rotor rotates, the adjusting baffle plate is driven to move in the internal cavity of the diaphragm body and opening / closing control of the light through hole can be completed. The opening / closing process of the diaphragm is directly driven by the motor so that the complex transmission structure can be eliminated, the production and processing cost of the electric diaphragm can be reduced and the adjusting stability of the diaphragm can be enhanced.

The invention discloses a SCR and SNCR denitrification system collaborative control method for a pulverized coal power station boiler. The method includes the combustion optimization control and denitrification ammonia injection control optimization. The combustion optimization control includes data measurement and acquisition, data cleaning, establishment of a steady state database and establishment of a rule base. The denitrification ammonia injection control optimization includes control structure optimization and algorithm for realizing denitrification ammonia injection control optimization. The method solves the problem that the thermal NOx emissions in the combustion process of a thermal power plant are of high value and high volatility; solves the problem of high ammonia slip causedby ammonia regulation in the SCR device; and solves the jamming problem caused by the ammonia slip of an air preheater; improves the SCR zone and the regulation stability of the NOx at the outlet ofthe denitrification device; and has strong promotion and application capabilities.

The invention relates to the technical field of optical prisms, in particular to an adjustable optical prism. The adjustable optical prism comprises three groups of lenses which are arranged in a triangular shape; a first fixing sleeve, a second fixing sleeve and a third fixing sleeve respectively sleeve the outer surfaces of the three groups of lenses; a first connecting pile is fixed at one end,deviating from the third fixing sleeve, of the lens; a second connecting pile is fixed to the end, deviating from the third fixing sleeve, of the first fixing sleeve; the first connecting pile is rotationally connected with the second connecting pile through a hinge shaft; and an adjusting assembly is fixed to the end, away from the third fixing sleeve, of the first fixing sleeve and comprises afixing frame, the inner wall of the fixing frame is rotationally connected with the first connecting pile and the second connecting pile through rotating shafts, and a first connecting rod is rotationally connected to the end, away from the adjusting assembly, of the first fixing sleeve through a hinge shaft. The angle formed by the three lenses can be conveniently adjusted, and the adjusting stability is improved.

The invention discloses a welding strip correcting device for a photovoltaic module laminating machine. The welding strip correcting device comprises a connecting frame and a mounting frame, wherein arectangular groove is formed in the top end of the mounting frame, a connecting block is slidably connected in the rectangular groove, a plurality of upper roller bodies are fixed to the outer wall of one side of the connecting block through bearings, a plurality of lower roller bodies are fixed to the outer wall of one side of the mounting frame through bearings, and the upper roller bodies andthe lower roller bodies are distributed in a staggered mode; a lifting assembly is arranged at the top end of the connecting block; and adjusting frames are arranged on the two sides of the outer wallof one side of the connecting frame, sliding grooves are formed in the top ends of the adjusting frames, and sliding blocks are welded to the two sides of the outer wall of the bottom end of the mounting frame. According to the welding strip correcting device for the photovoltaic module laminating machine, the lifting assembly is arranged to be used for lifting the connecting block, so that the distance between the upper roller bodies and the lower roller bodies is adjusted according to the thickness of a welding strip, the height of the connecting block can be adjusted according to the screwing-out length of threaded rods, the threaded rods can be simultaneously adjusted under the action of rotating hand wheel rods, it is guaranteed that the lifting height on the two sides of the connecting block is consistent, and the adjusting stability is improved.

The invention provides an illumination lamp with an adjustable illumination range, which comprises a base, a support column is connected with the base, a connecting column is arranged on the support column, a illumination lamp is connected to the connecting column, a photo fixing component is arranged between the support column and the connecting column, the connecting column is fixedly sleeved with a connecting seat, the connecting seat is connected with an illumination range adjusting component through a plurality of arc-shaped connecting rods. The illumination range adjusting component canenlarge or shrink the covering diameter of a lamp shade, so as to enlarge or shrink the illumination range of the lamp, also has the effect of providing an accommodating space, the adjustment stability is high and the fixing strength is good, The photo fixing component enables the photos to be displayed in a plurality of forms, the photos can rotate, and meanwhile, the photo frame can display transverse or longitudinal photos and the display effect of the photos is improved.

The invention relates to a regulating valve, in particular to a high-pressure and micro-flow tandem type regulating valve, and belongs to the technical field of control valves. The high-pressure and micro-flow tandem type regulating valve comprises a valve body, wherein a valve seat is arranged in the valve body, a second gasket is arranged between the valve body and the valve seat, a guide pressing sleeve is arranged at the upper end of the valve seat, the upper end of the valve body is connected with an upper cover through a bolt, the upper cover tightly presses the guide pressing sleeve and the valve seat in the valve body, and a first gasket is arranged between the valve body and the upper cover. The upper end of the upper cover is connected with a packing pressing board through a bolt. A valve element assembly is installed in the valve seat in a matched mode, the upper end of the valve element assembly penetrates through the guide pressing sleeve, the upper cover extends out of the packing pressing board, packing is arranged between the valve element assembly and the upper cover, a packing pressing cover is arranged between the packing and the packing pressing board, and the packing pressing board tightly presses the packing pressing cover and the packing. According to the high-pressure and micro-flow tandem type regulating valve, the tandem type structure is adopted, the multi-stage depressurization function is achieved, the flow velocity of media is reduced, the inner parts of the valve are protected effectively, and the noise of the valve is lowered; meanwhile, the phenomenon that as the throttling area is small when micro-flow regulation is performed, the valve is blocked can be avoided; the valve element assembly is of a double-guide structure and is prevented from bending and deforming, the regulation stability of the valve is improved, and the service life of the valve is prolonged.

The present invention provides one kind of mold regulator of powder molding machine, and belongs to the field of mechanical technology. The mold regulator set near the mold includes one mold seat, one material storing unit connected to the mold seat and with material hole, and one material discharging unit comprising one circular core rod and one cylindrical sleeve, and one regulating unit aroundthe middle part of the core rod. The mold regulator has the advantages of simple operation, easy regulation and high stability.