131results about How to "Increase the number of revolutions" patented technology

A multiturn angle measuring device (1) with a first dimensional standard (9) that is non-rotatably connected to an input shaft (2) and which is sampled by a first scanning unit (10) to determine the angular position of the input shaft. Additional dimensional standards (11, 12, 13) measure the number of turns of the input shaft (2) and are arranged in parallel to each other. The rotational speed of each additional dimensional standard (11, 12, 13) is reduced by means of a reduction gearing from the preceding dimensional standard (9, 11, 12). A scanning device (21, 22, 23) for the sampling of each dimensional standard (11, 12, 13) is arranged on a circuit board (6). To provide a multiturn shaft encoder able to measure a high number of turns, even at high rotational speeds and/or large diameter input shafts, with compact construction and comparatively few multiturn stages, the input drive gear (40) fixed to the input shaft (2) and the first driven transmission gear (41) have axes of rotation (D₄₀, D₄₁) that are not parallel to each other. The flanks of the teeth (Z₄₀, Z₄₁) of the input drive gear (40) and of the wheel (411) of the first driven transmission gear (41) are not parallel to the axes of rotation (D₄₀, D₄₁) of the respective gears (40, 41), and the number of teeth (Z₄₀) of the input gear (40) is smaller than the number of teeth (Z₄₁) of the wheel (411) of the first transmission gear (41). The following transmission gears are again arranged parallel to the input shaft, and the drive pinion (412) of the first transmission gear (41) and the driven wheel of the second transmission gear (31) have helical gears.

A wafer W is processed by supplying a two-fluid, high pressure jet water, or mega-sonic water onto the wafer W, while rotating the wafer W in an essentially horizontal state. After supply of the cleaning fluid is stopped, the wafer W is dried by rotating the wafer W at a higher speed than that used in supplying the cleaning fluid. No rinsing process using purified water is performed in a period after stopping supply of the cleaning fluid and before rotating the substrate at the higher speed.

An engine starting apparatus is provided with: a target torque setting device for setting a sum of a cranking base torque for cranking an engine and a vibration controlling torque for suppressing vibration of a power transmission system due to resonance of a damper, as a target torque to be outputted by a motor in cranking the engine; and a motor controlling device for controlling the motor to output the set target torque. The target torque setting device has a base torque controlling device for setting the cranking base torque to a first torque value if the number of revolutions of the engine is less than or equal to predetermined number of revolutions of the engine and for controlling the cranking base torque.

A electricity generating assembly includes a plurality of rotatable fan blades. A generator is connected to the plurality of fan blades to convert rotation of the fan blades into electricity. A plurality of shutters surround the plurality of fan blades. The plurality of shutters are movable between a first position in which said plurality of shutters are open to allow access to the plurality of fan blades and a second position in which the plurality of shutters are closed to prevent access to the plurality of fan blades. A motor is connected to the plurality of shutters to move the plurality of shutters between the first and second positions.

A guide reed swing position adjusting device of a double raschel machine capable of facilitating the adjustment of a swing position by simplifying the structure of the guide reed drive mechanism of the double raschel machine to suppress the excessive swing motion of a guide reed when a broad texture is knitted, wherein the guide reed having front ground yarn reeds (5a), connecting yarn reeds (5c), and rear ground yarn reeds (5b) is installed against front and rear two rows of needle rows (1a) and (1b), a means for causing and synthesizing a swing displacement other than the swing of the front and rear ground yarn reeds in synchronism with the swing of the connecting yarn reeds, and a swing displacement independent of the swing displacement of the connecting yarn reeds is added to the front and rear ground yarn reeds so that the positions of the front and rear ground yarn reeds acting on the needle rows can be adjusted.

Provided are an engine 111, a generator-motor 113, a clutch 112 connecting/disconnecting power therebetween, a battery 115, and a loading pump 117 for driving a fork 118. The generator-motor 113 is set either in a generator mode or in a motor mode. When a cargo handling load (detected by a loading lever position sensor 145 and the like) is smaller than a predetermined value, the clutch 112 is set to a disconnection state, the engine 111 is stopped or idled, and the loading pump 117 is driven by the generator-motor 113 in the motor mode. When the load is increased to the predetermined value or more during cargo handling work in a state where the clutch 112 is released, an increase of the number of revolution of the engine is started while an output of the generator-motor 113 is being increased. When the number of revolution of the engine 111 is made equal to the number of revolution of the generator-motor 113, the clutch 112 is set to a connected state, and the loading pump 117 is driven by the engine 111.

The present invention relates an electric rotating machine comprising a plurality of phase coils each composed of a plurality of partial coils each made by connecting segments each composed of an inside-slot conductor portion to be accommodated in each of slots of each of phase slot groups made in a stator core and an outside-slot conductor portion protruding from the slot. Of the plurality of partial coils constituting each of the phase coils, in each of the partial coils to be connected to an input/output terminal, its inside-slot conductor portion is accommodated in the slot other than end portions of the phase slot group in a circumferential direction of the stator core. This reduces the electric potential difference between the outside-slot conductor portion continuing thereinto and the outside-slot conductor portion of an adjacent phase coil, thereby improving the insulating performance.

An electricity generating assembly includes a first turbine having a first plurality of fan blades and a second turbine having a second plurality of fan blades. A first rotor is connected to the first turbine and rotatable with the first turbine. A second rotor is connected to the second turbine and is rotatable with the second turbine. The first and second turbines are rotatably connected to a shaft such that rotation of the first and second turbines cause rotation of the shaft, wherein the first and second turbines rotate in opposite directions.

A solar powered wheel apparatus comprising one or more photovoltaic cells housed on a rotatable element connected to a rotary object such as a wheel, an electric motor, and an axial shaft, is provided. The electric motor is in electric communication with the photovoltaic cells that power the electric motor and is rigidly connected to the rotatable element that houses the photovoltaic cells. The axial shaft is rotatably connected to the electric motor and rigidly connected to a support structure of the rotary object. The electric motor converts electrical energy produced by the photovoltaic cells into mechanical energy causing the electric motor to rotate about the axial shaft. The rotation of the electric motor rotates the rigidly connected rotatable element that houses the photovoltaic cells. The rotation of the rotatable element housing the photovoltaic cells removes heat from the photovoltaic cells and causes rotation of the connected rotary object.

The invention provides a coaxial birotor general wind generator which comprises a bracket which is arranged on a tower post and can freely rotate around a vertical axis in the tower post, a ram head is arranged above the bracket, and one side of a stander is provided with a wind helm. The ram head consists of a main shaft, an outer casing shaft, two wind wheels, a magnetic steel rotor and a coil rotor, wherein, the outer casing shaft is sheathed at one end of the main shaft, the main shaft and the outer casing shaft are arranged on the bracket through bearings, the wind wheel I is fixed on the main shaft, the wind wheel II is fixed on the outer casing shaft, the magnetic steel rotor is fixedly arranged on the main shaft, and the coil rotor is fixedly arranged on the outer casing shaft. The coaxial birotor general wind generator has high working efficiency, good stability and small occupied area of equipment, and can be placed in courtyards, the tops of buildings or roofs, gazebos and other places; and the generator has the advantages of simple and convenient installation, high feasibility, low cost, simple structure, convenient production and maintenance, and the like.

A roller bearing cage is disclosed, which is provided inexpensively from basic minimum quantity of row material. The roller bearing cage is made with a production method using rolling operations, which is the absence of the formation of chips, while ensuring the strength and stiffness of the cage. A circular inside surface of the cage is made to give an advantage to the rolling operations. The circular inside surface is circularly recessed to have a concaved surface of just one radius of curvature R. A diametral dimension across diametrically opposing bottoms of the circular recess is made larger than the pitch circle distance P.C.D. Pillars of the cage have inside retainer lips, which are hard to make any engagement with their associated rollers, which might worsen the engine performance.

The invention relates to a biomass gasification device and a gasification process. The biomass gasification device comprises a fan, a gas generator, a gas purification device, a pressure vessel and a gas conveying pipe network of a user terminal. The biomass gasification device is characterized by also comprising a water ring compressor and a gas-water separator. The biomass gasification device converts a biomass material with low thermal value and waste into clean environment-friendly biomass fuel gas with high thermal value, has a reasonable and compact structure, small occupied area, and simple, high-efficient and safe process, and obtains clean pollution-free fuel gas with high purity and in particular solves the problem of the separation of wood tar, thereby effectively preventing erosion, blockage and environmental pollution in a pipeline; and the biomass gasification device has wide application and in particular realizes fueling and channelization of biomass waste in rural area as soon as possible so that common rural people, like urban people, can use clean and convenient fuel gas.

[Problem]

An object of the present invention is to provide a motor control apparatus that, with a high reliability, protects the motor release-switch comprising the semiconductor switching elements in small size and an electric power steering apparatus provided the same.

[Means for solving the problem]

An electric power steering apparatus that drive-controls a motor by an inverter, and a motor release-switch is connected between the inverter and the motor, comprising: a control section to detect an assist state on a driving control system and to ON/OFF-switch a control of the inverter based on a detection result; a motor rotational number detecting section to detect a rotational number of the motor; an energy calculating section to calculate an energy of a motor back-EMF and a regenerative current based on the rotational number; and a judging section to compare the energy with an area of safety operation of the motor release-switch and to OFF-switch the d motor release-switch when the energy becomes within the area of safety operation. As occasion demands, the area of safety operation is calculated with the temperature.

A continuous-type cement metering device comprises a metering screw, a metering screw driving motor, a feeding rotary valve, a feeding rotary valve driving motor, an industrial control computer, a feeding rotary valve frequency converter and a weight sensor. The continuous-type cement metering device is characterized in that the pulling-type weight sensor is connected with the meter screw in a hanging manner, the industrial control computer is connected with a programmable logic controller (PLC) electrically, the signal input end of the programmable logic controller (PLC) is connected with an encoder arranged at a shaft end of the metering screw electrically, and the signal output end of the programmable logic controller (PLC) is connected with the metering screw through a metering screw frequency converter, and is connected with the feeding rotary valve frequency converter and the feeding rotary valve driving motor electrically and sequentially. The continuous-type cement metering device has the advantages of small size, light weight, high metering accuracy, good versatility, reliable performances, and convenience in maintenance and usage, and requirements for China highways can be met.