35results about How to "Increase or decrease speed" patented technology

The invention provides a method for accurately controlling the rotating speed of a fan and relates to the field of system heat dissipation. The method comprises the steps that difference values of actual temperatures read by a plurality of sensors and a preset temperature are simultaneously calculated and compared, the fan PWM capable of meeting the need for heat dissipation of all monitored heat emitting points at the same time is determined through certain mathematical calculation, and finally the PWM is transmitted to the fan through a mainboard to achieve the real-time monitoring and quick feedback control over the rotating speed of the fan.

The invention provides a control method and control device of a dual-refrigeration system refrigerator and the dual-refrigeration system refrigerator. The control method of the dual-refrigeration system refrigerator comprises the following steps: when the compressor of the refrigerator is started, determining the initial rotating speed of the compressor; judging whether a cold storage module and a freezing module of the refrigerator run simultaneously; if yes, detecting tube temperature of a cold storage evaporator and a freezing evaporator of the refrigerator; and controlling and adjusting the rotating speed of the compressor according to the tube temperature of the cold storage evaporator, and controlling and adjusting the on-off state of a freezing draught fan of the refrigerator according to the tube temperature of freezing evaporator. According to the technical scheme, the refrigerating capacity of the compressor is matched with the thermal load of a system to improve the operating efficiency of the compressor, so that the operating efficiency of the refrigerator refrigerating system is improved, energy consumption is reduced, and electric energy is saved.

The invention relates to the field of manufacturing of shield cutters, in particular to an active telescopic shield cutter mechanism. A body comprises reamer assemblies and a cutter disc, the reamer assemblies are arranged on the cutter disc, and the four reamer assemblies are arranged in the center of the cutter disc in the circumferential direction at equal interval. Each reamer assembly comprises a cutter bit body, a speed reducer, a variable displacement motor and a sliding rail device, the cutter bit bodies are arranged in the sliding rail devices, the sliding rail devices are arranged in the cutter disc, the speed reducers are arranged on the rear sides of the cutter bit bodies, the variable displacement motors are arranged on the rear sides of the speed reducers, and hydraulic oil pipes are arranged on the rear sides of the variable displacement motors. The active telescopic shield cutter mechanism has the advantages that when a shield mechanism encounters large-diameter pumice stone, boulders and local hard rock in the tunneling process, an active telescopic cutter is adopted, the rotating speed of the cutter can be instantly improved or reduced easily, and breaking and tunneling can be carried out more easily.

The invention discloses a mixed feeding device capable of automatically adjusting the blending combustion amount of stale garbage. The mixed feeding device comprises a mechanical grate furnace, a mixed garbage conveying device, a raw garbage feeding device, a stale garbage feeding device, a mixed garbage crushing device and a control center. The raw garbage feeding device, the stale garbage feeding device and the mixed garbage conveying device are all connected with the control center. The stale garbage feeding device is used for transporting stale garbage to the raw garbage feeding device. The raw garbage feeding device is located between the stale garbage feeding device and the mixed garbage conveying device. The mixed garbage crushing device is used for chopping garbage and inputting the chopped garbage into the mechanical grate furnace. Multiple temperature sensors are arranged in the mechanical grate furnace, the multiple temperature sensors are connected with the control center, the multiple temperature sensors collect working parameters of the mechanical grate furnace and transmit the working parameters back to the control center, the control center transmits feedback signals to each device, and therefore the blending combustion ratio is controlled and adjusted.

The invention provides a state rotating speed control method and system of a horizontal coil winding machine. The method comprises a step of detecting the state of the horizontal coil winding machine, a step of receiving the control command of the horizontal coil winding machine by an operator, and a step of changing the state of the horizontal coil winding machine according to the control command so as to increase the rotation speed of the horizontal coil winding machine. The technical scheme provided with the invention has the advantage of convenient operation of a user.

Th invention relates to control of an internal combustio engine (109), especially when used in a series hybrid vehicle, with a motor (107) delivering drive torque to the wheels. In a constant point operation of the engine (109), engine speed is not linked to accelerator pedal position or vehicle speed. When the driver in this constant point operation steps on the accelerator pedal or the brake pedal, a target engine speed is modified by an offset value. This ensure that the driver gets the same feeling as in a conventional vehicle, i.e. a change in engine speed in response to accelerator or brake pedal actuation. A feeling of incongruity is avoided.

A braking system (2) is used for a passenger transport installation (1) in the form of a lift, escalator or moving walkway. The braking device (5) comprising actuation equipment (7) is provided in this respect. Also provided are a pump (16) supplying a brake fluid to the piston space (11) of the actuation equipment (7) and a motor (15) which drives the pump (16). According to the invention, a control device (14) is also provided, which controls the motor (15) by way of a frequency inverter (19) in such a manner that the pump (16) supplies brake fluid at a delivery flow rate (QP) predetermined by the control device (14). A return flow rate (QL) is also made possible, wherein the pressure (pB) is set in the piston space (11) of the actuation equipment (7) corresponding to an equilibrium in which the delivery flow rate (Qp) is equal to the return flow rate (QL). The control device (14) sets the pressure (pB) in the piston space (11) of the actuation equipment (7) by way of the delivery flow rate (QP) of the pump (16). The invention also relates to a passenger transport installation (1) in the form of a lift, escalator or moving walkway having a braking system of this kind and to a method for controlling the braking force in a passenger transport installation (1) of this kind.

The invention provides an adjustable inclined type tea drying and cooling device. The device includes a base plate, rotating wheels, a conveyor belt, a transmission motor, a vibrating rod and a smallmotor; the two sides on the top of the base plate are fixedly provided with a shell through bolts; the bottom on one side of the shell is fixedly provided with a side plate through a bolt; the top ofthe shell is provided with a feeding inlet; the middle part on one side of the shell is integrally provided with a guide plate; and the top on the inner side of the guide plate and the shell are fixedly provided with a shunting frame directly through the bolts. Through the arrangement of a twitching slide plate and an inclined mesh, the spreading distance of tea can be lengthened; through the sieving of the inclined mesh and the guiding of air flow, and part of the tea can fall down from mesh holes of the inclined mesh, and part of the tea can fall down again after falling down to the twitching slide plate to perform expansion, so that gaps can be generated, and the drying speed of the tea can be accelerated; and the draw-off of the twitching slide plate can be performed through the bolts,and the flow distance and speed of the tea can be increased or decreased by adjusting the distance of the twitching slide plate, so that the drying time can be conveniently controlled.

An end-face grinding device for air intake and exhaust valves of internal combustion engines structurally comprises a roller, an under carriage, a motor, a controller, a speed governor, a protective cover, a limit rod and a grinding wheel. The under carriage is concave, and has hard outer surface and hollow inside, and the left and right sides of the under carriage are the same and parallel to each other; the speed governor is arranged on the controller. The end-face grinding device has the advantages that, with the arrangement of the speed governor, rotation speed is changed through a variable-speed chip by turning a speed-adjusting knob and is subjected to parallel process through a processing unit, while an actuator is used for controlling operation of a controlled object, so that end-face grinding speed can be increased or decreased according to states of products, precision of the grinding work can be improved, and the work efficiency is improved as the end-face grinding can be completed with single feeding; besides, by application of the end-face grinding device, surface quality of the workpieces under end grinding can be improved, end-face grinding efficiency can be improved, labor intensity of workers can be reduced, and the purpose of guaranteeing both quality and productivity of finish products can be achieved.

The invention relates to a method for controlling a process and/or a production unit. The invention is achieved by the operator controlling the production unit by blowing or sucking a specially designed control device. The invention also relates to a system and an operating member for controlling a process and/or a production unit.

The invention discloses an agricultural rotary cultivator with an automatic fertilization function, and particularly relates to the field of agriculture, the agricultural rotary cultivator comprises a main body mechanism, a fertilization mechanism is fixedly mounted on one side of the main body mechanism, the main body mechanism comprises a rotary cultivator shell, a front scraper is arranged at the bottom of the rotary cultivator shell, and the fertilization mechanism at least comprises four storage bins; second discharging ports are formed in the bottoms of the four storage bins, a connection type supporting base is fixedly installed at the bottoms of the four storage bins, a moisture-proof sleeve is fixedly installed at the bottom of the connection type supporting base, and a moisture-proof bottom plate used for being connected with a rotary cultivator shell is fixedly installed at the bottom of the moisture-proof sleeve; and a first rotating shaft is rotationally mounted at the top of the moisture-proof bottom plate. According to the invention, the rotating drum enables a spiral limiting block to enable a gear disc to rotate through a third rotating shaft and a conveying belt, so that a rotating plate is driven to rotate, and rotary mixing and overturning work are carried out through a stirring pipe, so that mixed fertilization of various fertilizers is realized, and the working efficiency is improved.

The invention relates to a printing pattern length control method capable of meeting color register stability, which comprises the following steps: a printing material sequentially passes through a printing roller and n printing plate rollers, and each printing plate roller is used for printing; comprising the following steps that SA, the positions of all printing plate rollers are debugged and fixed; sB, calculating the arc length of an arc between the contact points of each adjacent printing plate roller and the printing roller on the printing roller; sC, the error detection system is used for measuring the real-time length of the pattern in the printing material conveying process, and the length of the printing pattern needing to be compensated is calculated; sD, the rotating speed of the first printing plate roller is increased or decreased according to the length of the error; sE, the rotating speeds of the second printing plate roller, the third printing plate roller to the nth printing plate roller in the conveying direction of the printing material are sequentially increased or decreased when the printing area of the printing material arrives, the time difference of changing the rotating speeds of the adjacent printing plate rollers is the ratio of the arc length of the arc between the contact points of the adjacent printing plate rollers and the printing roller on the printing roller to the conveying speed of the printing material, and color register is accurate and stable.

The invention relates to an electrical machine (6) with a machine assembly (8) and a compressor assembly (10), the machine assembly (8) and the compressor assembly (10) being connected to each other in a contactless manner by force transmission via a gear (14).