57results about How to "Suppression amplitude" patented technology

A driving circuit of an electro-optical device includes scanning lines, data lines, capacitor lines respectively corresponding to the scanning lines, and pixels provided at intersections of the scanning lines and the data lines. The driving circuit includes a scanning line driving circuit that selects the scanning lines in a predetermined order and a capacitor line driving circuit that selects a first power supply line when a first scanning line is selected and selects a second power supply line when a second scanning line that is spaced predetermined lines away from the first scanning line is selected until the first scanning line is selected again to thereby apply a voltage of the selected one of the power supply lines to the capacitor line, the capacitor line driving circuit applying the voltage of the second power supply line to all the capacitor lines when all the scanning lines are not selected.

It is an object of the present invention to output a stable output signal having little distortion by adjusting a delay time of an amplitude signal path and a phase signal path. In an amplitude phase extracting part (2), amplitude data and phase data are extracted from a transmit data signal and outputted. Then, in an amplitude modulating part (3), the amplitude of the amplitude data is modulated and an amplitude modulating signal is inputted to a non-linear amplifying part (5) as a source voltage value. Further, in a phase modulating part (4), the phase of the phase data is modulated and a phase modulating signal is supplied to the non-linear amplifying part (5) as an input signal. In the non-linear amplifying part (5), the phase modulating signal is multiplied by the amplitude modulating signal to output an RF signal with a prescribed gain amplified. Here, a delay part (12) is provided in a pre-stage of the amplitude modulating part (3) and a delay part (13) is provided in a pre-stage of the phase modulating part (4), respectively to adjust the delay time of an amplitude signal path and a phase signal path. Thus, the quantities of delay are allowed to correspond to each other to reduce a distortion generated due to the difference in delay time between both the paths.

A transmitter and method to output a stable output signal having low distortion by adjusting a delay time of an amplitude signal path and a phase signal path. In an amplitude phase extracting part, amplitude data and phase data are extracted from a transmit data signal and outputted. The amplitude of the amplitude data is modulated in an amplitude modulating part and an amplitude modulating signal is outputted; the phase of the phase data is modulated and a phase modulating signal is outputted. In a non-linear amplifying part, the phase modulating signal is multiplied by the amplitude modulating signal to output an RF signal with a prescribed gain amplified. A delay part provided in a pre-stage of the amplitude modulating part and a delay part provided in a pre-stage of the phase modulating part, respectively, adjusts the delay time of an amplitude signal path and a phase signal path.

An optical information-recording medium, which is provided with a substrate and a light-absorbing layer formed of a dye material on the substrate, includes a user information area in which a concave / convex pattern including spiral-shaped or concentric grooves are formed, and BCA which is provided on an inner circumferential side of the user information area and in which information is recorded with a bar code, wherein a concave / convex pattern, which is different from the concave / convex pattern in the user information area, is formed in BCA. With this construction, an optical information-recording medium, on which BCA information is reproduced without performing any tracking, is provided, wherein a BCA reproduced signal having a satisfactory signal quality is obtained from BCA.

Voltage is applied across a counter electrode and a working electrode, with which a blood sample is in contact, in such a state that an oxidant in a redox substance is not substantially in contact with a working electrode but is in contact with a counter electrode and a reductant is not substantially in contact with the counter electrode but is in contact with the working electrode, whereby the reductant and the oxidant are respectively oxidized and reduced to measure current produced upon the oxidation and reduction. According to the above constitution, while lowering the voltage applied across the working electrode and the counter electrode, the Hct value of the blood sample can be measured stably with a satisfactory detection sensitivity. This measurement can be carried out with a sensor chip comprising a working electrode (11), a counter electrode (12), and a blood sample holding part (14) having branch parts (18a, 18b). A first reagent (13) consisting essentially of an oxidant in a redox substance is disposed in contact with the surface of a counter electrode which faces the branch part (18b), and a second reagent (19) consisting essentially of a reductant is disposed in contact with the surface of a working electrode that faces the branch part (18a).

A retransmission control apparatus for use in a radio communication system that uses an orthogonal frequency division multiplexing technique, the apparatus comprising a transmitter which transmits to a radio station a data sequence, which serves as communication data that has been transformed into a time waveform of an orthogonal frequency division multiplexing symbol; a receiver which receives from the radio station a retransmission request for retransmitting the communication data; a transformation mechanism configured to transform, in response to the retransmission request, the data sequence of the communication data to be retransmitted into an orthogonal frequency division multiplexing symbol having a time waveform different from the time waveform of the orthogonal division multiplexing symbol which had been sent before the retransmission request; and a retransmitting mechanism configured to retransmit the communication data transformed by the transformation mechanism to the radio station. Since the time waveform of the resulting OFDM data symbol after the retransmitting operation is changed from that before the retransmitting operation, it is highly likely that the average power of the transmitting signal is increased. As a result, the occurrence of errors when the data sequence is retransmitted is reduced, thereby improving the throughput.

Provided is a vibration control device for a windmill for wind-powered electricity generation, which can be arranged in a narrow space within a supporting post without an accompanying increase in the weight of the supporting post, and which is capable of changing the characteristic frequency of the supporting post. The vibration control device is equipped with: a pendulum (21), which is equipped with a swinging rod (23) extending in the height direction of the supporting post and suspended via a first universal joint (31) from joists (15, 16) provided in the upper part of the aforementioned supporting post, a flange part (24) extending outward radially in the circumferential direction from the outer surface at the upper end of the swinging rod (23), and a weight (25) attached to the swinging rod (23) and capable of ascending and descending in the axial direction of the swinging rod (23); and multiple attenuation devices (22), the upper ends of which are attached to the joists (15, 16) via second universal joints (32) and the lower ends of which are attached to the flange part (24) via third universal joints (33).

In a method for transmitting data between a master control unit and a slave control unit, the master control unit (4) outputs a pulse width-modulated signal (7) at an output terminal (HI_LO_BUS) in order to transmit the same to the slave control unit (5) via a bus (6). The method includes the steps: the slave control unit (5) generates an acknowledgement signal at periodic acknowledgement intervals (TQuitt); the slave control unit (5) influences the pulse width-modulated signal (7) transmitted on the bus (6) during the acknowledgement interval (TQuitt); the master control unit (4) detects theinfluenced pulse width-modulated signal (7), the pulse width-modulated signal (7) output at the output signal terminal (HI_LO_BUS) being read back at an input signal terminal (Read_Back_Bus) of the master control unit (4).

The invention belongs to a vehicle transmission, and provides a vehicle hybrid power system achieving multi-power-source coupling. The problems that as for an existing hybrid power system, a motor isexcessively large in torque and excessively low in rotating sped, and thus the system is large in size, large in weight and high in cost are solved. The vehicle hybrid power system comprises an engine, a first motor, a second motor, a speed reducer and an output flange disc; the speed reducer comprises a speed reducer box, an input shaft and an output shaft, and further comprises a one-way clutch,a planetary gear train, a first motor gear pair and a second motor gear pair which are arranged in the speed reducer box; the planetary gear train comprises a sun gear, a planetary frame, a gear ringand planetary gears; one end of the input shaft is arranged on the speed reducer box and connected with engine output, and the other end of the input shaft is arranged on the gear ring; one end of the output shaft is fixedly connected with the gear ring, the other end of the output shaft is fixedly connected with the output flange disc, and outer teeth of each planetary gear are engaged with inner teeth of the gear ring and outer teeth of the sun gear correspondingly; and a first motor passive gear is arranged on the outer side face of the gear ring, and a second motor passive gear is coaxially and fixedly connected with the sun gear.

The invention relates to a laser gyroscopic compass shock mitigation system which comprises a box. An IMU support is arranged in the box and provided with a laser gyroscope, the left circumference and the right circumference of the outer side of the IMU support are connected with an inner frame through dish-shaped rubber shock absorbers, the upper end and the lower end of the inner frame are connected with an outer frame through bowl-shaped rubber shock absorbers, and the outer frame is fixed to the box. By means of the laser gyroscopic compass shock mitigation system, an inertia device, namely a laser gyroscope can be protected to normally vibrate in severe environment, and the angular speed of a carrier can be accurately measured; and on the other hand, influences of external stimulation such as vibration impact on a compass can be isolated or reduced, the good damping and anti-impact effects are achieved, the accurate course and posture can be provided, work is stable and reliable, and overall disassembling and maintaining are convenient.

The invention discloses a method for outputting a measured exciting force signal of a piezoelectric vibration sensor with high sensitivity, and aims to solve the problem that a conventional cantileverbeam type piezoelectric vibration sensor cannot accurately measure a vibration signal with higher frequency. The method is realized through the following technical scheme: the method comprises the following steps: enabling piezoelectric sensitive elements to be overlapped to form a piezoelectric cantilever beam serving as a sensitive element, and enabling the to-be-measured vibration of a mass block to act on the sensitive elements, wherein the formed piezoelectric cantilever beam is provided with a damping block which is fixed to the position close to the base. The cantilever beam piezoelectric body vibrates under the action of the mass block; when the vibration frequency is close to the first-order resonance frequency of the cantilever beam piezoelectric body, the condition that the amplitude near the first-order resonance frequency point is sharply increased under the damping effect of the damping block due to resonance is effectively restrained, the formed effect is that in the frequency band lower than the second-order resonance frequency, the amplitude of cantilever beam vibration and the amplitude of measured exciting force are in a corresponding linear relation, and the high-frequency upper limit with the frequency monitoring upper limit requirement reaching high sensitivity can be obtained.

The invention provides a magnetorheological fluid pulsation adjusting device and an adjusting method thereof. The adjusting device comprises an electromagnetic induction coil module and a signal acquisition and processing unit, wherein the electromagnetic induction coil module is arranged at the magnetorheological fluid ejection end of a magnetorheological fluid circulation system pipeline; the signal acquisition and processing unit is communicated with the electromagnetic induction coil module through signal transmission; the signal acquisition and processing unit is used for acquiring magnetorheological fluid pulsation signals in the magnetorheological fluid circulation system pipeline, converting the pulsation signals into electric signals and transmitting the electric signals to the electromagnetic induction coil module; and the electromagnetic induction coil module is used for generating an alternating magnetic field according to the electric signals so as to change the viscosity of magnetorheological fluid and then inhibit the pulsation signals of the magnetorheological fluid in the magnetorheological fluid circulation system pipeline. According to the mgnetorheological fluid pulsation adjusting device and the adjusting method thereof provided by the invention, the pulse amplitude in the magnetorheological fluid circulation system working by adopting a peristaltic pump can be actively inhibited, and the machining precision of an ultra-large-diameter complex curved surface is improved.

The invention discloses a method for suppressing vibration of a built-in permanent magnet motor and improving torque performance. The method comprises the steps of (1), adding auxiliary grooves at q-axis positions on the surface of a cylindrical rotor core; and (2), simultaneously adding auxiliary grooves on armature teeth and / or fault tolerance teeth of the stator core. According to the method ofthe invention, through simultaneously adding auxiliary grooves at the q-axis positions on the surface of the rotor core and the stator tooth surfaces of the stator core of a single-layer centralizedbuilt-in permanent magnet motor, and further realizing influence to an interaction mechanism between a stator tooth harmonic wave magnetic field and a rotor permanent magnetic field, low-order harmonic wave amplitude of a radial electromagnetic force is suppressed and gullet torque is reduced. Finally suppression for vibration and noise of the single-layer centralized built-in permanent magnet motor and optimization of motor output torque performance can be finally realized.

A high-frequency amplifier includes: an amplification section having a function to convert an input signal from a voltage signal into a current signal and output the current signal; output terminals; and a load circuit which is connected to the output node of the amplification section and outputs the current signal output by the amplification section to the output terminals as a voltage signal.

The invention discloses a novel active air foil bearing based on PZT and SMA. The novel active air foil bearing comprises a shaft sleeve, piezoelectric ceramics (PZT), a memory alloy wire mesh block (SMA block), flexible hinges, a rigid push rod, pre-pressure applying devices, a cooling pipe, a wave foil and a top foil; the PZT and the SMA block are installed in pre-machined through grooves, the corresponding pre-pressure applying devices are designed for the PZT and SMA block, the wave foil is formed by pressing an elastic material, one end of the wave foil is welded, and the other end of thewave foil is free. The top foil overlies the wave foil. Power supply signals of the PZT are controlled, the flexible hinges are coupled, PZT deformation is amplified, the wave foil is supported by the rigid push rod, the wedge-shaped space is enlarged, therefore, the crossed coupling effect is weakened, the dynamic pressure effect of the bearing is enhanced, and the rigidity characteristic of thebearing is improved; by controlling the temperature of the SMA block, the SMA block expands and contracts to generate larger structural damping, and the damping characteristic of the bearing is improved; and finally, the rigidity and damping characteristics of the bearing are actively controlled, and the stability of the system is improved.

The invention discloses a nanocrystalline magnetic ring device, which is fixed on a gas-insulated enclosed switchgear and comprises a nanocrystalline magnetic ring string, a protective shell, a shielding case and insulating parts, wherein the gas-insulated enclosed switchgear is sleeved with the nanocrystalline magnetic ring string; the nanocrystalline magnetic ring string comprises a plurality of nanocrystalline magnetic rings; the nanocrystalline magnetic rings are closely arranged along the axial direction of the gas-insulated enclosed switchgear; two adjacent nanocrystalline magnetic rings are connected through a first bonding layer; the protective shell sleeves the outside of the nanocrystalline magnetic ring string; the inner diameter of the protective shell is equal to the outer diameter of the nanocrystalline magnetic ring string; the shielding case is connected with the protective shell through a second bonding layer; the insulating parts are arranged at two ends of the magnetic ring string; and the insulating parts are connected with the adjacent nanocrystalline magnetic rings through the first bonding layer. The nanocrystalline magnetic ring device is simple in structure, low in cost and high in reliability; manual operation is not needed; and the amplitude and the steepness of VFTO can be effectively suppressed.

A high-frequency amplifier includes: an amplification section having a function to convert an input signal from a voltage signal into a current signal and output the current signal; output terminals; and a load circuit which is connected to the output node of the amplification section and outputs the current signal output by the amplification section to the output terminals as a voltage signal.

The invention discloses a decoupling control method and device for a continuous working mode power factor correction converter. The method comprises the steps of: firstly detecting the keyparameters such as output voltage, the rectified input voltage, the inductive current and the load current of the continuous working mode power factor correction converter at the beginning of each switching period; respectively calculating the duty ratio of a current control loop and the duty ratio of a voltage control loop in each switching period according to the detected key parameters, and adding the dutyratios to obtain a duty ratio signal of the power factor correction converter in the continuous working mode in each switching period; and finally, controlling the on-off of a switching tube in the continuous working mode power factor correction converter according to the calculated duty ratio signal. According to the decoupling control method and device of the invention, the voltage control loopand the current control loop can be decoupled from each other, so that double power frequency ripples of output voltage cannot be introduced into the current control loop, a high power factor and lowinput current distortion are ensured, and meanwhile, the transient response speed and reliability of the power factor correction converter are improved.

A run flat tire includes a pair of bead portions (1) having annular beads (1a), a carcass layer (5) placed between the bead portions (1) with each end portion of the carcass layer wound around the bead (1a), sidewall portions (2a, 2b) each extending radially outward of the tire from the bead portion (1), reinforcing rubber layers (9a, 9b) having a substantially crescent cross-section and arranged at the sidewall portions (2a, 2b), on the inner side of the carcass layer (5), and a tread portion (4) for connecting the ends on the outer peripheral sides of the sidewall portions (2) through shoulder portions (3). The run flat tire has an asymmetric rigidity structure where the rigidity of the sidewall portion (2a) on the outboard side of a vehicle is higher than the rigidity of a sidewall portion (2b) on the inboard side of the vehicle.

The invention discloses a quantum cascade laser-based full-optical and pure-frequency modulation system. The system comprises a quantum cascade laser, a high-precision current source, a constant-temperature control device, a double-light-beam modulation system, a light beam collimator, a beam splitter, a Fourier infrared spectrometer, a beam focusing device, a high-frequency infrared detector and a high-precision oscilloscope. According to the technical scheme of the invention, a frequency-modulated light source is adopted to irradiate the emergent end surface of the quantum cascade laser, so that the high-speed amplitude and frequency modulation is realized, wherein the amplitude modulation is positive modulation. An amplitude-modulated inhibited light source is adopted to irradiate the emergent end surface of the quantum cascade laser, so that the high-speed amplitude and frequency modulation is realized, wherein the amplitude modulation is negative modulation. Based on the synchronization of the frequency-modulated light source and the amplitude-modulated inhibited light source, the sync suppression of the amplitude modulation and the pure frequency modulation are realized.

The invention discloses a washing machine damping mechanism and a washing machine, relates to the technical field of washing machines and is designed for solving the problem that an existing washing machine damping mechanism is poor in damping effect, large in washing machine balance weight and incompact in structure. The washing machine damping mechanism comprises multiple first dampers supporting an outer tub of the washing machine, and a second damper is connected between at least two first damper. In addition, the invention provides the washing machine provided with the damping mechanism. On the basis of original first dampers, the second damper for connecting two first dampers is added for the washing machine damping mechanism, the amplitude of the outer tub of the washing machine is further inhibited through the second damper, vibrations of the whole machine in vertical and horizontal directions are effectively limited, accordingly the balance weight is effectively decreased, and the washing machine is compact in structure while achieving better damping and noise reduction effects.

A circularly polarized antenna device, which is connectable to a wireless terminal measurement apparatus for performing measurements on a device under test (DUT) provided with an antenna on one surface of the DUT, includes a circularly polarized antenna and a holder. The circularly polarized antenna includes a dielectric substrate and a circularly polarized type of antenna element formed on a first surface of the dielectric substrate. The first surface is opposite to the one surface of the DUT. The circularly polarized antenna is spatially coupled to the antenna of the DUT. The holder holds the circularly polarized antenna and the DUT such that the one surface of the DUT and the dielectric substrate are not parallel to each other.

The invention discloses an arc extinguishing cabinet and a low current grounding system. The arc extinguishing cabinet is provided with a switching device and a low current grounding line selection device. The low current grounding line selection device is used for performing insulating monitoring and sampling of the three-phase voltage collected by a first voltage transformer group through a first input end and sampling the zero sequence current of a total incoming line cabinet through a second input end; and determining the fault phase and the fault type and controlling the switching deviceto switch the resistive load on the branch corresponding to the fault according to the voltage exceeding the first preset value and / or the zero sequence current exceeding the second preset value whenany one of the three-phase voltages exceeds the first preset value and / or the zero sequence current exceeds the second preset value so that the resistive load is switched on the the branch corresponding to the fault when the single-phase grounding fault occurs, the grounding current becomes resistive-capacitive grounding current, the amplitude of the power grid overvoltage can be suppressed and the purpose of suppressing the arc discharge generated by the single-phase grounding fault point and ensuring the safe and stable operation of the power system.

The invention discloses a three-phase four-wire high-frequency uninterrupted power supply (UPS) and a method for reducing neutral-ground voltage by using the same. The three-phase four-wire high-frequency UPS comprises a bus control circuit, wherein the bus control circuit comprises a double-ring adjusting module, a voltage feedforward module and a pulse-width modulation (PWM) output module; the voltage feedforward module comprises a feedforward calculation unit, a feedforward correction unit and a superposition unit; the feedforward calculation unit is used for calculating the voltage feedforward value according to bus voltage and network voltage; the feedforward correction unit is used for correcting the voltage feedforward value; the corrected voltage feedforward value is used for weakening wave transmitted by the PWM output module when the network voltage is near zero; the superposition unit is used for superposing the corrected voltage feedforward value and the output value of the double-ring adjusting value and outputting the superposed value to the PWM output module. By implementation of the technical scheme of the invention, the sine degree of inductive current is changed well, so that the harmonic wave of the inductive current is effectively reduced, the triple harmonic current is reduced, zero-line current is reduced, and the neutral-ground voltage can be reduced.

The invention discloses a parallel type internal and external combined shock absorber, and belongs to the technical field of auto parts. The parallel type internal and external combined shock absorber comprises an upper base plate, a lower base plate and a shock absorption body, wherein the shock absorption body comprises an external connection shock absorption mechanism and an internal connection shock absorption mechanism; the external connection shock absorption mechanism comprises a small-diameter pressure spring, a medium-diameter tension spring and a large-diameter pressure spring which jointly form a tandem type large-small-diameter tension-compression spring, and a small-diameter frame cylinder and a large-diameter frame cylinder are inserted into the tandem type large-small-diameter tension-compression spring in a sleeving mode to form the external connection shock absorption mechanism; the internal connection shock absorption mechanism is formed by sequentially connecting a first damper, a first inerter, a second inerter and a second damper in series; and the internal connection shock absorption mechanism is sleeved with the external connection shock absorption mechanism to form the shock absorption body, and the shock absorption body is fixedly connected between the upper base plate and the lower base plate to form the parallel type internal and external combined shock absorber. The parallel type internal and external combined shock absorber has the beneficial effects that the vibration frequency can be mixed, the frequency and the amplitude are induced to be converted, the vibration is converted into low-frequency vibration, the vibration in the running process of the automobile is continuously reduced, and the riding comfort of the automobile is improved.

A tensioner that can precisely control the vibration amplitude of the second shaft member of the tensioner to which an external input load is applied. In the present invention, the first shaft member (3) and the second shaft member (4) screwed together by the threaded parts (8, 9) and the torsion spring (5) rotating in one direction and compressing the first shaft member (3) Contained in the housing (2). The rotational momentum of the torsion spring (5) is converted into the driving force of the second shaft member (4), and the rotation of the second shaft member (4) is restricted. An elastic member (20) is provided between the first shaft member (3) and the second shaft member (4) to generate a resisting torque corresponding to an external input load applied to the second shaft member (4), thereby precisely suppressing the second shaft member (4). Amplitude of the 2-axis component (4).

The invention discloses a nonlinear spring-variable damping system with a self-adaptive damping function and a moving platform system. The nonlinear spring-variable damping system is applied to a moving platform and is characterized by comprising one oil cylinder containing damping oil, one piston, at least one connecting rod, at least one spring and one damping self-adaptive adjusting device; the piston is contained in the oil cylinder, and the piston can move along the oil cylinder to enable the damping oil to flow; the connecting rods are connected with the piston, and the deformation process of the springs is restrained by the connecting rods; and the damping self-adaptive adjusting device is configured to change the flow resistance of the damping oil in a self-adaptive mode according to the vibration of the moving platform so as to control the system damping, and when the moving platform vibrates, the connecting rods and the springs can enable the piston to be subjected to nonlinear spring force. Compared with a linear-damping system, the amplitude of the nonlinear spring-variable damping system is greatly inhibited.

The invention discloses a device for suppressing vortex-induced vibration of a marine riser, and belongs to the technical field of ocean engineering. The device for suppressing the vortex-induced vibration of the marine riser comprises a clamp, a supporting seat fixed to a marine floating body and a vibration damping mechanism capable of providing resistance, the clamp is arranged on the outside of the marine riser, one end of the vibration damping mechanism is fixed to the supporting seat, the other end of the vibration damping mechanism directly faces the clamp, and spacing exists between the other end of the vibration damping mechanism and the clamp. The device for suppressing the vortex-induced vibration of the marine riser is simple in structure, convenient to install and good in vortex-induced vibration suppression effect.