126results about How to "Expand the output range" patented technology

The invention discloses an orthogonal piezoelectric displacement amplifying mechanism which is in a diamond symmetrical structure. Two diagonals of the diamond are mutually perpendicular but not equal in length. Laminated piezoelectric ceramic is disposed along the long diagonal of the diamond. Two corners along the short diagonal of the diamond are provided with a fixed surface and a stress surface respectively. The fixed surface and the stress surface are parallel with the laminated piezoelectric ceramic. Compared with common displacement amplifying mechanisms, the orthogonal piezoelectric displacement amplifying mechanism has the advantages of high amplifying ratio, large output force, fast response, simple structure, easiness in processing, convenience in use, easiness in modularization, resistance to electromagnetic interference and the like. Effective force output is maintained while piezoelectric displacement amplification is achieved. The orthogonal piezoelectric displacement amplifying mechanism is also excellent in dynamic performance. Therefore, as a driver, the orthogonal piezoelectric displacement amplifying mechanism has important value of application to the fields of micrometric displacement mechanical systems, micrometric displacement positioning, proportional values and pumps, nozzles, optical precision instruments, aerospace control and the like.

A mobile terminal including a display unit arranged on the front surface so multiple pieces of visual information corresponding to multiple layers, respectively; and a front-surface input unit so a control command is input into the front-surface input unit and a rear input unit arranged on the rear surface so the control command is input into the rear input unit; and a controller to apply a function corresponding to an input to first visual information displayed on a first layer, and activate a second layer arranged under the first layer while maintaining a state in which the first visual information is displayed on the first layer in response to input to the rear input unit.

The invention discloses an edible fungus dried air circulation treatment device which comprises a baking chamber, an air treatment unit, an air supply header pipe, an air mixing device, and an air supply pore plate and an air return pore plate which are arranged in the baking chamber in parallel, wherein the baking chamber is segmented into an air supply static pressure space, an air return static pressure space and a baking workshop; the air treatment unit consists of an air inlet, a solid adsorption and dehumidification device, a heat pump loop, a fan, an auxiliary electric heater and an air outlet; the heat pump loop consists of a condenser and three groups of compressors and an evaporator assembly which are arranged in parallel; and the compressors and the evaporator assembly comprise an expansion valve, an evaporator and compressors which are sequentially connected. By employing the parallel air supply mode and the general-branch-general-branch refrigerant distribution mode, the air distribution is improved, and the uniformity and stability of the air flow and temperature field in the baking chamber during operation are guaranteed, so that the consistency of the baking effect is guaranteed, and the energy consumption in the process of operating the baking chamber at a low load is reduced.

The disclosed output feature control method for resonant circuit comprises: with two groups of switch tubes, changing the conductive frequency for tube to adjust output voltage, and adjusting the tube duty rate; wherein, the switch point can be controlled by setting cut-in frequency or voltage. This invention brings PWM method for complementary symmetry drive to overcome the defect of PFM method, and increases adjustment capacity for output voltage.

Disclosed is a nitride based III-V group compound semiconductor laser device of ridge waveguide type with an oscillation wavelength of about 410 nm which has a low driving voltage, a high half-width value θ / / of a FFP in a direction horizontal to a hetero interface, and a high kink level (i.e., good light output-injected current characteristics over the high-output range). This laser device is similar in structure to the related-art semiconductor laser device except for the current constricting layer formed in a ridge. It has a stacked film composed of an SiO2 film (600 Å thick) and an amorphous Si film (300 Å thick) which are formed on the SiO2 film by vapor deposition. The stacked film covers both sides of the ridge and a p-AlGaN cladding layer extending sideward from the base of the ridge. The SiO2 film and Si film have respective thicknesses which are established such that the absorption coefficient of fundamental horizontal lateral mode is larger than the absorption coefficient of primary horizontal lateral mode. This structure results in a higher kink level, while suppressing the high-order horizontal lateral mode, a larger effective refractive index difference Δn, and a larger value of θ / / without the necessity for reducing the ridge width.

An amplifier circuit having an amplifier chain comprising an input port and output port with a plurality of interconnected gain stages positioned in between. The output of one interconnected gain stage provides an input to the next stage within the amplifier chain. The output port coupled to the plurality of interconnected gain stages such that the amplifier circuit output is generated from any one or more of the interconnected gain stages.

The invention relating to the phase-locked loop charge pump circuit technical field in microelectronics discloses a self-calibration charge pump circuit used in a phase-locked loop. The invention is characterized in that: the self-calibration charge pump circuit comprises a current branch 1 and a self-calibration feedback circuit 2; the self-calibration feedback circuit 2 comprises a reference branch 21, a biasing branch 22 and a feedback amplifier 23; the reference branch 21 and the output node of the current branch 1 are respectively connected with the positive input end and the negative input end of the feedback amplifier 23; the output end of the feedback amplifier 23 is connected with the biasing branch 22 to from a closed-loop feedback loop. The invention also discloses a self-calibration feedback circuit 2 used in a charge pump circuit. The invention solves the problems of unmatched output current and unstable circuit status of a charge pump circuit when output voltage varies in a large range.

The invention aims to provide a temperature detection and analysis method of a vehicular motor controller with high reliability, so that the measured MCU (microprogrammed control unit) temperature can be close to a real value to the maximal extent, and the MCU is protected according to temperature data, so as to reduce maintenance frequency of the system. In the temperature detection and analysis method of the vehicular motor controller, a motor control system utilizes at least two temperature sensors to collect temperature of a drive module, arranges all temperature data collected by the temperature sensor, eliminates the data with the maximal deviation, and finally controls the output power of the drive module according to the preserved temperature data. Temperature misjudgment due to the fact that one temperature sensor cannot normally work or the measurement deviation is large can be avoided through the temperature sensor with redundancy design, so that the reliability of collection of the MCU temperature data can be ensured, and the measured temperature data can be close to the real value to the maximal extent.

The invention discloses a thermal comfort simulation model from local to the whole body on the basis of fuzzy neural network, which pertains to functional clothing CAD technical field of computer simulation study field. The invention aims at overcoming the problem that the psychological and physiological parameters of the human body in the thermal comfort model are difficult to be accurately quantified and the complexity of the psychological system and the sensory system, by adopting fuzzy neural network model to build local thermal sensory model for each part of the body based on skin and core temperature and the change rate of the skin and core temperature to build the whole body thermal comfort model based on the thermal sensory of each part of body. The model, based on the psychological and physiological process of human thermal reaction and employing the method of simulation fuzzy neural network method, can correctly reflect the adaptability character of a sensor, forecast the sense of each part of the human body, reduce the difficulty of computer network modeling, increase analysis time, solve interference problems and ensure that the forecast of thermal sense can be more accurate.

This ion detector includes an MCP and a plurality of planar dynodes respectively having a plurality of slits. The plurality of planar dynodes are stacked via spacers parallel to an electron output plane of the MCP, and the first stage planar dynode is opposed parallel to the electron output plane. In accordance with this ion detector, it is possible to obtain output signals having the linearity reaching mV order, and to shorten its pulse width to approximately 600 ps.

There is provided a single motor which performs plural driving characteristics and can expand output range thereof. Three coils are wounded around each of the stator teeth A to F, and provided to each stator tooth A to F are switches for providing a concentrated winding state by connecting the three coils in series in each stator tooth A to F, and switches for providing a distributed winding state by connecting in series the coils of any one of units through the stator teeth A to F Depending on the rotating speed, the torque or the like, the coils are changed between the concentrated winding state and the distributed winding state.

The invention provides a pulse current sensor and a surge wave recording lightning protection box manufactured by adopting the same. The pulse current sensor comprises a pair of oppositely arranged semi-arc magnetic cores, wherein an air gap is reserved between the two semi-arc magnetic cores; a nonmagnetic metallic conducting ring is sleeved outside the air gap, and an inner bore axial line of the nonmagnetic metallic conducting ring is in accordance with the magnetic lines of the semi-arc magnetic cores; coils are wound on the semi-arc magnetic cores, and output terminals are led from the coils. In the pulse current sensor, two nonmagnetic metallic conducting rings are arranged in two symmetric gaps of the two semi-arc magnetic cores; therefore, under the action of the two semi-arc magnetic cores, the pulse current sensor is free of magnetic circuit saturation, and the output accuracy and output range of the pulse current sensor are improved, which establishes a foundation for displaying a whole voltage oscillogram. By the adoption of the pulse current sensor, the test sensitivity is improved, and the measurement error is reduced.

In the present specification, degradation of a battery is suppressed in a hybrid vehicle having an EV mode in which the hybrid vehicle runs without using an engine and an HV mode in which the hybrid vehicle runs using both the engine and a motor. A controller of the hybrid vehicle is configured to limit a usage range of the battery in the EV mode with an execution request of the EV mode having been made by an information input from outside to the vehicle than in the EV mode with no execution request. The degradation of the battery is suppressed by limiting the usage range of the battery.

A high quality component-incorporated substrate achieves a sufficient connection between an in-plane electrode and an interlayer connection conductor at low cost. A method of forming a hole for an interlayer connection conductor of a resin substrate includes a step of forming an in-plane electrode in a core substrate, a step of forming a light reflective conductor for reflecting a laser beam applied on the in-plane electrode in a later step, a step of forming a resin layer so as to cover the core substrate, the in-plane electrode and the light reflective conductor, and a step of forming a hole for the interlayer connection conductor by removing the resin layer on the light reflective conductor through the use of a laser beam.

The invention discloses an integrator with a wide output range and high precision. The inverting input end of an operational amplifier is connected with one end of a first switch, one end of an integrating current source, one end of an integrating capacitor and one end of a reset switch, the other end of the first switch is connected with one end of a first current source, the other end of the integrating capacitor is connected with the output end of the operational amplifier, the other end of the reset switch is connected with one end of the first resistor, the other end of the first resistoris connected with the output end of the operational amplifier, and the non-inverting input end of the operational amplifier is connected with a reference signal VCM; the current directions of the integral current source and the first current source are opposite, and the current value output by the first current source is larger than that output by the integral current source. The output voltage of the integrator in the reset state can be flexibly set, the operational amplifier structure can be flexibly adopted to improve the performance of the whole circuit, and the performance of the integral current source generation circuit can be improved.

The invention provides a multifunctional micro-drive interface module, characterized by comprising active lever, fixing platform and two link rods, where the upper end of each link rod is connected through elastic rotating auxiliary with the bottom end of the active lever, respectively, and the lower end of the link rod is connected through elastic rotating auxiliary with elastic moving auxiliary fixed on the fixing platform, the bottom end of the active lever is connected through elastic rotating auxiliary with the fixing platform, and the rotating axes of all the elastic rotating auxiliaries are parallel to one another. And its advantages: (1) using lever principle, and when selecting different input ends, able to implement micro-displacement or force amplification at the other end; (2) designed according to the motion principle of parallel mechanism, so that in the operating course, only elastic moving auxiliaries and elastic rotating auxiliaries generate micro deformation, having very high motion accuracy. And its structure is simple and compact, and it can be widely applied to large operating space or ultraprecision machining field of heavy loads.

An LVDS (Low Voltage Differential Signaling) driving circuit includes a first transistor, a second transistor, a third transistor, a fourth transistor, a first resistor, a second resistor, and a bias driver. The first transistor is coupled between a supply voltage and a first node. The second transistor is coupled between the supply voltage and a second node. The third transistor is coupled between the first node and a ground voltage. The fourth transistor is coupled between the second node and the ground voltage. The first resistor is coupled between the first node and a third node. The second resistor is coupled between the second node and the third node. The bias driver generates bias signals for controlling the first, second, third, and fourth transistors according to a data signal.

The invention provides a series-parallel hybrid power system based on two gearboxes. A hybrid power assembly is arranged conveniently, types of hybrid power products are expanded, power transmission continues, and the system is suitable for various complex working conditions. The system comprises an engine, a first motor, a first gearbox, a differential mechanism, a second motor and a second gearbox, the first gearbox is integrated with the second gearbox to form an integrated composite box, and an output shaft of the first gearbox is integrated with an output shaft of the second gearbox to form an output shaft of the integrated composite box; the output shaft of the integrated composite box is connected with a main reduction gear through a transmission shaft, the second gearbox further comprises an outer protruding input shaft, the outer protruding input shaft protrudes from one side of the integrated composite box and is connected with the power output part of the second motor, and an input shaft of the first gearbox protrudes from the other side of the integrated composite box and is connected with the output end of a motor shaft of the first motor.

The invention provides an integrated settlement monitoring apparatus based on an optical fiber F-P cavity pressure sensor. The apparatus includes a micro optical fiber F-P cavity pressure sensor, an optical fiber, a liquid passing tube, a liquid storage container and a fiber bragg grating demodulation instrument. The micro optical fiber F-P cavity pressure sensor is installed in a pipeline of the liquid passing tube and passes through the liquid storage container from the pipeline of the liquid passing tube through a liquid passing tube port and an optical fiber outlet hole through the optical fiber and is lead out to the fiber bragg grating demodulation instrument. Pressure transmission liquid is arranged in the liquid passing tube and the liquid storage container. The liquid level in the pressure transmission liquid is higher than that in the micro optical fiber F-P cavity pressure sensor. The apparatus is simple in structure, is convenient to install, has long distance of transmission and has high measurement reliability. The apparatus can be used in settlement monitoring on a tailing dam and various rock and soil bodies under harsh environmental conditions.

The invention discloses six-freedom-degree reusable terminal frame type parallel force feedback equipment comprising a mechanical mechanism, a drive control module, a terminal posture collecting module and a power supply module. The mechanical mechanism is used for achieving six-freedom-degree motion input of a force feedback device terminal and three-freedom-degree feedback output and utilizes a suspender balance weight to balance dead load. The drive control module is used for achieving motion detection and control over a motor and controlling force sense output of the force feedback device. The terminal posture collecting module is used for completing angle measurement of vertical pitching, leftward-rightward swinging and rotation in the direction of an arm. The power supply module is used for providing a stable and reliable power source and conducting current overload protection. The six-freedom-degree reusable terminal frame type parallel force feedback equipment has the advantages of being large in feedback force, simple in structure and operation, good in real-time performance, low in cost, flexible in motion and the like.

The invention provides a DC large current source which comprises a regulation tube, a sampling circuit, a current sampling resistor, a reference voltage, an amplifier, an auxiliary power supply and a load. The DC large current source is characterized by that the DC large current source also comprises a power control module, the tube voltage drop in the regulation tube is adjusted according to a load condition, the voltage drop is reduced when the load is small, and the regulation tube working voltage is gradually increased when the load resistance is large.

The invention discloses a bicycle speed change system. By integrating a stepless speed change mechanism into a central system of a power-assisted bicycle, the current riding state is judged by a controller according to sensor information, the speed reducing ratio of manpower and a motor to a rear wheel of the bicycle is automatically adjusted, and thus, the driving motor can operate nearby a rated operation point; an efficient operation area and a torque output range of the central system are broadened, the endurance mileage is prolonged, and the cost of a power-assisted bicycle system is reduced; the central system can automatically judge the whole bicycle operation state according to the bicycle speed, the human foot treading frequency, the foot treading force and the treading direction, and the current power assist rate is automatically adjusted; and operation is easier, more convenient and more humanized, and speed change gears do not need to be adjusted manually.

The invention relates to a high-voltage large-power frequency conversion adjustable constant voltage source which comprises a signal generator and N signal processing circuits, wherein power sources for inner components of any two signal processing circuits are not grounded; each signal processing circuit is composed of a digital isolation switching circuit and a power amplifier module; a signal generated by the signal generator is synchronously output to all the signal processing circuits; after the signal is firstly processed by the digital isolation switching circuits of all the signal processing circuit, N high-precision isolated low-voltage alternate current signals are output, wherein N is an integer which is not less than 1; all the low-voltage alternating current signals are the same in amplitude, frequency and phase, and the amplitude and frequency of all the low-voltage alternating current signal can be synchronously adjusted; and all the low-voltage alternating current signals are output to the corresponding power amplifier modules treatment be amplified; and output ends of N power amplifier modules are sequentially connected in series so as to be utilized as the total output of the constant voltage source. The constant voltage source provided by the invention has the advantages that the output voltage and power accuracy is high, and the amplitude regulating range is large.

The invention discloses a wide-range high-precision high dynamic response eddy current displacement sensor and an implementation method. The sensor comprises an AC resonance boosting bridge, a fixed amplitude circuit, an amplitude compensating and adding circuit, an orthogonal sampling trigger signal generation circuit and a high speed sampling processor. The method comprises following steps: performing dual-path data sampling through a dual-path sampling method and calculating loss resistance of the resonance circuit according to the dual-path sampling data (S1, S2); calculating coil displacement according to the circuit loss; calculating displacement temperature drift after temperature compensation according to temperature S3. According to the invention, the sensitivity and measurement range of the sensor are increased by coil boosting, fixed amplitude excitation, and amplitude compensating; external disturbance is reduced and dynamic response and stability are increased by orthogonal sampling and digital processing.

A motor control device has a three-phase bridge circuit, a driving circuit, and a microcomputer. The three-phase bridge circuit has three pairs of MOSFETs for U, V, and W phases of a three-phase AC motor as a control target. The microcomputer has a dead time set value storage unit and a PWM signal generation unit. The PWM signal generation unit generates a PWM signal with a dead time including a response characteristics of the pair of MOSFETs for each of U, V, and W phases of the AC motor based on a three-phase voltage instruction value supplied from an outside device and the dead time set value stored in the dead time set value storage unit. The PWM signal generation unit outputs the PWM signal for each phase to the driving circuit. This independently adjusts the dead time for the MOSFETs for each phase.

A multi-voltage output linear power amplifier includes at least one single-voltage range linear power amplifier, a switching unit connected to each of the single-voltage range linear power amplifiersfor outputting a plurality of AC voltages and / or a plurality of DC voltages. The technical scheme can expand the voltage output range or the power range, and realize the AC / DC output of different voltage levels.

The invention discloses a hybrid MMC starting charging method, which solves the technical problem of overmodulation of a converter. The method comprises the following steps of: 1, pre-charging all half-bridge sub-modules and all full-bridge sub-modules; step 2, when the pre-charging voltage is reached, entering a step 3; step 3, entering a controlled charging stage 1: calculating a reference number nrefu of an upper bridge arm input sub-module; if the nrefu is greater than or equal to 0 and less than or equal to N1, entering a step 4; if <->N1<nrefu<=N1+N2, entering the step 5; if cN2<=nrefu<0, entering a step 6; step 4, inputting nrefu half-bridge sub-modules into the upper bridge arm, and inputting nrefl half-bridge sub-modules into the lower bridge arm; step 5; putting N1 half-bridge sub-modules into the upper bridge arm, and putting <->nrefl full-bridge sub-modules to output a positive level, and inputting <->nrefl full-bridge sub-modules into a lower bridge arm to output a negative level; step 6, inputting N1 half-bridge sub-modules into the lower bridge arm, and inputting <->nrefl full-bridge sub-modules output a positive level; and putting <->nrefl full-bridge sub-modules into the upper bridge arm to output a negative level; 7, judging whether the voltage is increased to the rated voltage UC, m or not; if yes, entering a step 7; if not, returning to the step 3; and 8, entering a controlled charging stage 2.

The invention discloses a charging power supply of an electric vehicle and a charging method of the electric vehicle. The charging power supply comprises two direct current output modules and a switch module, wherein the two direct current output modules are connected with a power output end and used for outputting direct current to supply power externally, and the switch module is connected with the two direct current output modules and the power output end and used for switching the connection relation between the two direct current output modules through connection or disconnection, so that the two direct current output modules can supply power externally according to different connection relations. The application range of the electric vehicle can be broadened, and the charging efficiency is improved.