32results about How to "Constant value" patented technology

Electric current supplied to light source rows of a vehicular lamp is controlled appropriately. The vehicular lamp includes: a plurality of semiconductor light emitting devices connected in parallel; a wire breakage detecting unit detecting wire breakage of each of the plurality of semiconductor light emitting devices; and an electric current supplying unit supplying a predetermined electric current to the plurality of semiconductor light emitting devices. The electric current supplying unit decreases the electric current to be supplied to the plurality of semiconductor light emitting devices when the wire breakage detecting unit detects wire breakage of at least one of the plurality of semiconductor light emitting devices.

For applying a driving current to a motor, an H-bridge circuit is constructed by a first and a second switching unit and a first and a second linear unit. An error amplifier generates an error signal representative of a difference between the driving current detected by a current detecting circuit and a command current signal. A state control circuit synchronously controls the first and second switching units and a feedback circuit. Through the feedback circuit, the error signal is selectively applied to the first or second linear unit such that one is operated in a linear mode and the other is operated in a nonconductive mode, thereby controlling the driving current to become proportional to the command current signal. The state control circuit further controls a brake circuit for transforming the error signal into a brake signal to operate the first and second linear units simultaneously in a conductive mode.

The invention relates to a cam climbing mechanism. A motor and a speed reducer are connected and are installed on a machine frame together, an output shaft of the speed reducer is provided with a driving sprocket, a first cam shaft is installed through a bearing in a bearing bracket which is located at one end of the top of the machine frame, a first sprocket is fixed arranged on the first cam shaft, and a short chain is sleeved on the driving sprocket and the first sprocket. A second cam shaft is arranged in a bearing bracket which is located at the other end of the top of the machine frame through a bearing, a second sprocket is fixedly arranged on the second cam shaft, and a long sprocket is sleeved on the first sprocket and the second sprocket. The lifting frame is placed on the machine frame, and a limit guide mechanism which enables the lifting frame to move in a lifting mode is arranged between the lifting frame and the machine frame. Work piece supporting plates are respectively arranged at two ends of the top of the lifting frame, support wheels are respectively arranged at two ends of the bottom of the lifting frame, and support wheels which are arranged at two ends of the bottom of the lifting frame are respectively arranged on an eccentric cam of the first cam shaft and an eccentric cam of the second cam shaft. The cam climbing mechanism has the advantages of being reasonable in structure, capable of achieving stable ejecting or descending of a tool support, constant in journey, safe and reliable.

In one embodiment, a set of tracking filters to be coupled between an amplifier and a mixer is provided. The tracking filters may be differently configured depending on band of operation. For example, a first set of the filters can be configured to maintain a substantially constant Q value across their operating bandwidth while a second set of the filters can be configured to maintain a substantially constant bandwidth across their operating bandwidth.

For applying a driving voltage to a motor, an H-bridge circuit is constructed by a first and a second linear unit and a first and a second switching unit. An error amplifier generates an error signal representative of a difference between the driving voltage detected by a voltage detecting circuit and a command voltage signal. A state control circuit synchronously controls the first and second switching units and a feedback circuit. Through the feedback circuit, the error signal is selectively applied to the first or second linear unit such that one is operated in a linear mode and the other is operated in a nonconductive mode, thereby controlling the driving voltage to become proportional to the command voltage signal. The state control circuit further controls a brake circuit for transforming the error signal into a brake signal to operate the first and second linear units simultaneously in a conductive mode.

An AC driving signal of a frequency in the vicinity of the resonance frequency of a piezoelectric transformer is generated by a variable oscillation circuit and the waveform of the output signal of the variable oscillation circuit is shaped so as to be substantially sinusoidal by a waveform shaping circuit and the output of the waveform shaping circuit is subjected by a driving circuit to current amplification or voltage amplification so as to be amplified to a level sufficient for driving the piezoelectric transformer and the output of the driving circuit is subjected to current limitation, and then input to the piezoelectric transformer and the output signal of the transformer is applied to a cold cathode fluorescent lamp so that the cold cathode fluorescent lamp is lit and even if the impedance of the cold cathode fluorescent lamp decreases, the piezoelectric transformer cannot supply a large current.

A toasting appliance includes a toasting chamber, a heating element for heating a foodstuff located within the toasting chamber, an optical system having a first light source for illuminating the foodstuff with light having a first wavelength and an optical receiver for detecting light reflected from the foodstuff. A second light source is provided for illuminating at least the optical receiver with light having a second wavelength different from the first wavelength. A controller varies the intensity of the light emitted from the second light source during a toasting operation.

A toasting appliance includes a toasting chamber, a heating element for heating a foodstuff located within the toasting chamber, an optical system having a first light source for illuminating the foodstuff with light having a first wavelength and an optical receiver for detecting light reflected from the foodstuff. A second light source is provided for illuminating at least the optical receiver with light having a second wavelength different from the first wavelength. A controller varies the intensity of the light emitted from the second light source during a toasting operation.

A paster for the application of a film of water-containing adhesive to a running substrate of cigarette paper or the like automatically replaces the evaporated percentage of water when the substrate-processing machine is idle but the paster continues to circulate adhesive in order to prevent a rise in the viscosity of the then circulating and water releasing adhesive. The quantity of water in the circulating adhesive and other parameters (such as the temperature) of the adhesive are monitored by several sensors, and signals which are transmitted by such sensors are processed to regulate the admission of water in order to maintain the percentage of water, and hence the consistency, of the circulating adhesive within a range not appreciably departing from that when the paster is in actual use to apply one or more films of adhesive to the running substrate.

Disclosed herein is a linear compressor in which a piston reciprocally moves in a cylinder upon receiving a reciprocating drive force of a linear motor to compress working-fluid, for example, refrigerant, received in the cylinder. The linear compressor comprises the piston adapted to reciprocally move in the cylinder, the piston being internally formed with a suction path, a suction valve to open or close the suction path of the piston to selectively connect the suction path of the piston to the interior of the cylinder, and a suction valve stopper to limit the degree of opening of the suction valve, whereby no excessive stress is applied to the suction valve. This has the effect of eliminating damage and deformation of the suction valve, minimizing vibration and noise due to the opening / closing operations of the suction valve, and maintaining the compression efficiency of the compressor at a constant value.

Disclosed herein is a linear compressor in which a piston reciprocally moves in a cylinder upon receiving a reciprocating drive force of a linear motor to compress working-fluid, for example, refrigerant, received in the cylinder. The linear compressor comprises the piston adapted to reciprocally move in the cylinder, the piston being internally formed with a suction path, a suction valve to open or close the suction path of the piston to selectively connect the suction path of the piston to the interior of the cylinder, and a suction valve stopper to limit the degree of opening of the suction valve, whereby no excessive stress is applied to the suction valve. This has the effect of eliminating damage and deformation of the suction valve, minimizing vibration and noise due to the opening / closing operations of the suction valve, and maintaining the compression efficiency of the compressor at a constant value.

An illegal pattern and a computer program having a method are received. The method has one or more return statements, and a number of basic blocks. The method is normalized so that each return statement of the target method relating to the illegal pattern returns a constant Boolean value. A first path condition and a second path condition for one or more corresponding paths is determined such that one or more corresponding basic blocks return a constant Boolean value of true for the first path condition and a constant Boolean value of false for the second path condition. An unsatisfiability of each path condition is determined using a monadic second-order logic (M2L) technique. Where the unsatisfiability of either path condition is false, the method is reported as not being a validator. Where the unsatisfiability of either path condition is true, the method is reported as being a validator.

For applying a driving voltage to a motor, an H-bridge circuit is constructed by a first and a second linear unit and a first and a second switching unit. An error amplifier generates an error signal representative of a difference between the driving voltage detected by a voltage detecting circuit and a command voltage signal. A state control circuit synchronously controls the first and second switching units and a feedback circuit. Through the feedback circuit, the error signal is selectively applied to the first or second linear unit such that one is operated in a linear mode and the other is operated in a nonconductive mode, thereby controlling the driving voltage to become proportional to the command voltage signal. The state control circuit further controls a brake circuit for transforming the error signal into a brake signal to operate the first and second linear units simultaneously in a conductive mode.

The invention relates to a fatigue test hydraulic loading device for a rigid material. The fatigue test hydraulic loading device for the rigid material comprises a clamping pump station, a loading pump station, a manual reversing valve, an oil cylinder, a test piece clamp and an oil storage tank, wherein a clamp I is fixedly arranged on a machine seat; a clamp II is connected with a piston rod on the oil cylinder; the clamping pump station is connected with an oil path of the oil cylinder through the manual reversing valve; an eccentric wheel and a cam are both fixedly arranged on the same shaft connected with a motor; a plunger pump I and a plunger pump II are in driving connection with the eccentric wheel; the reversing valve is in driving connection with the cam; the plunger pump I and the plunger pump II are connected with the oil path of the oil cylinder through a check valve and the reversing valve; and the plunger pump I and the plunger pump II are connected with an oil path of the oil storage tank through check valves. The cam coaxial with the loaded plunger pumps is used for controlling the reversing valve to carry out switching of the oil paths of the hydraulic system, pulling force and pressure can be applied to the tested material circularly, and therefore work reliability is quite high.

A method of correcting ultrasound images, the method including the operations of, by an ultrasound output unit, outputting an ultrasound signal to a target object; obtaining an mechanical index (MI) map indicating a correlation between depth values according to a travel direction of the ultrasound signal, and MI values by the ultrasound signal; and adjusting a gain value of an ultrasound echo signal corresponding to the ultrasound signal by using a reverse MI map that is obtained by reversing the MI map, so as to allow the MI values, which are displayed on the MI map, to be a virtually constant MI value with respect to the depth values.

Provided is a treatment method of a semiconductor wafer facilitating picking-up of semiconductor chips and preventing contamination by a dicing sheet. A wafer back surface treating method is characterized in that a ground or polished surface of a semiconductor wafer activated in a grinding or polishing step, with semiconductor circuits formed thereon, is deactivated. In the method, the activation treatment with an oxidizing agent is preferable. Furthermore, the activation treatment is preferably implemented with blowing of ozone to a ground or polished surface of a wafer, with ozone water or with illumination of a ground or polished surface of a wafer with ultraviolet (UV). It is preferable to adhere a dicing sheet after the deactivation treatment.

Provided is a die for shear drawing capable of performing continuous drawing and shear deformation at the same time. The die for shear drawing includes a material processing channel in which a material is sheared and drawn while passing therethrough, wherein the processing channel includes an inlet path positioned at a front end thereof, and an outlet path positioned at a rear end thereof, when viewed from a movement direction of a material. The inlet path and the outlet path are connected to intersect a central axes thereof at a certain angle, and the processing channel includes a cross-section reduction segment allowing an outlet cross-sectional area of the outlet path to be smaller than an inlet cross-sectional area of the inlet path to thereby draw out a material from an exit of the outlet path with the material filled therein.

The invention discloses a method for quickly detecting quality stability of tobacco essence based on a similarity learning algorithm. The method comprises the following steps: acquiring spectra of a plurality of to-be-tested tobacco essence samples and standard tobacco essence as to-be-tested spectra and standard sample spectra; obtaining a distance matrix between the plurality of to-be-detected tobacco essence samples and the standard sample spectrum; and according to the distance matrix, obtaining the similarity between the comprehensive quality of the plurality of to-be-detected tobacco essence samples and the standard tobacco essence, and taking the similarity as the quality stability of the plurality of to-be-detected tobacco essence samples. According to the invention, the mass of the solid essence is judged on the whole based on the distance similarity and the spectral analysis method, calculation is carried out according to the essence spectrum characteristics, the obtained distance difference does not change along with the change of the range and the number of samples under the condition that the standard sample spectrum is fixed, the algorithm is simple and easy to implement, the obtained mass parameter data value is constant, the defects of the existing near-infrared quality detection are overcome, and the quality fluctuation reflected by the detection result is intuitive and clear.

The production is performed by calcining ferrite magnetic powder in which La is substituted for part of Sr and Ti, Zn, and Co are substituted for part of Fe at temperatures of 1100° C. to 1450° C. The magnetization is improved by substituting Zn for part of Fe, and by substituting Ti for part of Fe for the purpose of charge compensation. In addition, the coercive force is improved by substituting Co for part of Fe, and by substituting La for part of Sr for the purpose of charge compensation. Ti is used for the charge compensation, so that it is possible to reduce the cost.

The invention relates to the field of a deodorization filling material, in particular to a deodorization microbial filling material and a preparation method thereof. The deodorization microbial filling material is prepared from a pressure-resistant porous composite filling material substrate and deodorization strains fixed to inside pores and surfaces of the composite material substrate; the deodorization goal is achieved by using the physical adsorption of the reticular structure pores in the filling material and the degradation effect of the microbes in the pores and on the surfaces of the filling materials. The characteristics of uniform particle diameter, high pressure resistance, high porosity, low density, high surface roughness and high deodorization microbial activity are realized;the problems of easy compaction, low adsorption efficiency on pollution gas, regeneration difficulty and the like of the existing waste gas biological purification device can be solved.

A device for polymerizing lactams in molds, comprising: a reservoir for storing lactam, wherein said reservoir is kept at a temperature which varies in the range of 135-150° C. for melting the lactam and keeping it in melted state; lactam feeding means comprising dosing pipes for feeding the lactam from the reservoir, first dosing means for feeding an initiator; second dosing means for feeding an activator; a mixing head configured to receive the lactam, the initiator and the activator from respectively said lactam feeding means, said first dosing means and said second dosing means. The initiator and activator are liquid, and the cited reservoir and lactam feeding means are located within a heater configured to maintain the temperature of the lactam at a substantially constant value until it reaches the mixing head.

An internal-combustion-engine combustion state detecting apparatus is configured in such a way as to include a circulation unit that short-circuits a primary winding so as to form a circulation path including the primary winding, while a spark discharge is produced in an ignition plug, and a circulation current control unit that controls a circulation current flowing in the circulation path and in such a way that based on an ion current detected by an ion current detection apparatus, the combustion state of an inflammable fuel-air mixture is detected.

The invention relates to a method for laying a floor covering that includes a flexible material containing a thermoplastic wear layer made from, in particular, plasticized PVC. The basic panels that form the covering are glued to the ground and cold welded in between on the site to be covered. After a panel has been positioned and glued to the surface to be covered, a continuous bead of mastic, which is made on the actual site by mixing a hardener and a polyurethane resin in aqueous phase, is applied laterally along the entire depth of the covering. The next panel is positioned on the ground which is covered with adhesive and the lateral edge thereof is pinned against the edge of the preceding panel comprising the bead of mastic, thereby causing the excess material to come to the surface, where it is removed by simply wiping with water.

A display device includes at least a first luminance range and a second luminance range which includes a luminance different from the first luminance range. In a boundary area of a second dimming range corresponding to the second luminance range and which is adjacent to a first dimming range corresponding to the first luminance range, a reference luminance emitted from a pixel is maintained as a first constant luminance value, and an off-duty number, which is the number of periods in which the pixel is turned off during one frame, is gradually increased by an emission control signal.

A touch display device is disclosed, including a display panel and a touch layer, a sealant disposed between the touch layer and the display panel, the sealant, the touch layer, and the display panel forming a sealed cavity. An air pressure intensity inside the sealed cavity is less than a preset value.

A high frequency module includes a wiring substrate and a metal shield cover. A wiring conductor through which a high frequency signal is transferred and which is coupled to the electronic component, a wiring electrode which is coupled to the wiring conductor and is provided in an outside further than the shield cover, and a ground electrode which is coupled to the shield cover, are provided on the wiring substrate. The shield cover includes a side plate which is formed of a metal of a plate shape, and a leg portion which is provided in the side plate and is soldered to the ground electrode. A gap is formed between the side plate and the wiring substrate, and the wiring conductor is disposed so as to intersect the side plate in a planar view, on the wiring substrate which is positioned below the gap.

A light source device with an LED module includes a load module. The load module includes a voltage-regulating unit and a constant current controlling unit parallel-connected between a first output end and a second output end of the voltage-regulating unit. An input end of the voltage-regulating unit is connected to a positive end of a voltage source. The voltage-regulating unit generates a stable voltage difference of less than 1.6V between the first and second output ends. The LED module receives a residual voltage equal to the result of subtracting from the output voltage of the voltage source the voltage difference consumed by the load module. The amount by which the residual voltage exceeds the operating voltage required for the entire LED string never exceeds safe voltage values. Even if a voltage source changes, the voltage-regulating unit can still generate a stable voltage difference and a stable current.

The invention relates to a cam climbing mechanism. A motor and a speed reducer are connected and are installed on a machine frame together, an output shaft of the speed reducer is provided with a driving sprocket, a first cam shaft is installed through a bearing in a bearing bracket which is located at one end of the top of the machine frame, a first sprocket is fixed arranged on the first cam shaft, and a short chain is sleeved on the driving sprocket and the first sprocket. A second cam shaft is arranged in a bearing bracket which is located at the other end of the top of the machine frame through a bearing, a second sprocket is fixedly arranged on the second cam shaft, and a long sprocket is sleeved on the first sprocket and the second sprocket. The lifting frame is placed on the machine frame, and a limit guide mechanism which enables the lifting frame to move in a lifting mode is arranged between the lifting frame and the machine frame. Work piece supporting plates are respectively arranged at two ends of the top of the lifting frame, support wheels are respectively arranged at two ends of the bottom of the lifting frame, and support wheels which are arranged at two ends of the bottom of the lifting frame are respectively arranged on an eccentric cam of the first cam shaft and an eccentric cam of the second cam shaft. The cam climbing mechanism has the advantages of being reasonable in structure, capable of achieving stable ejecting or descending of a tool support, constant in journey, safe and reliable.