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 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 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.

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.

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 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.