56results about How to "High speed drive" patented technology

The invention relates to a driving motor front-engine rear-drive automatic mechanical gearbox gear shifting system, in particular to a synchronizer-free gear shifting automatic mechanical gearbox on the basis of few-gear middle shaft active speed regulation, and belongs to the technical field of automobile control. The system comprises an input shaft, an output shaft, driving and driven gears for each gear, a spline hub, an engagement sleeve, a sensor, a speed regulating motor, a speed regulating motor transmission mechanism, a clutch operation mechanism, a gear shifting executing mechanism and a controller. The system realizes the synchronism of the engagement sleeve and a target-gear gear during the gear shifting through the regulation on the input shaft rotating speed under the condition of the motive power interruption of the speed regulating motor, a synchronizer with high requirements on materials is omitted, the cost is favorably reduced, and meanwhile, the problem that the starting and acceleration performance and the relative high-speed running of a small-size pure electric automobile cannot be simultaneously considered can be favorably solved.

The invention provides a liquid ejecting head, a liquid ejecting apparatus and an actuator capable of improving shift characteristics of piezoelectric element to implement high-speed driving and preventing damage of the piezoelectric layer to improve durability. A end face of a piezoelectric layer is composed of inclined planes in a incline mode of end of a lower electrode side is outsider than a upper electrode side. The lower electrode for composing piezoelectric elements has a width smaller than the width of the pressure generating chambers. The piezoelectric layer has a larger width than the lower electrode to cover end faces of the lower electrode. The vibration plate has a top layer formed of a titanium oxide (TiOx) insulator film. The lower electrode has a top layer formed of a lanthanum nickel oxide (LaNi[y]Ox) orientation control layer. The orientation control layer and at least part of the piezoelectric layer disposed on the orientation control layer are formed of perovskite crystals having a (113) preferred orientation.

The invention provides a resonant SiC MOSFET bridge arm crosstalk suppression drive circuit and a control method thereof. The circuit comprises a first voltage totem pole structure circuit connected between a first forward power supply and a first reverse power supply of an upper bridge arm; a first drive resistor circuit; a first low impedance circuit connected between a gate and a source of an upper tube; a second voltage totem pole structure circuit connected between a second forward power supply and a second reverse power supply of a lower bridge arm; a second drive resistor circuit; and asecond low impedance circuit connected between the gate and the source of a lower tube. An input end of the first drive resistor circuit is connected with an output end of the first voltage totem pole structure circuit, and an output end is connected with the gate of the upper tube. The input end of the second drive resistor circuit is connected with the output end of the second voltage totem pole structure circuit, and the output end is connected with the gate of the lower tube. The upper tube is connected with the lower tube. According to the circuit, performance advantage of a SiC MOSFET high speed switch can be exerted fully, a bridge arm crosstalk suppression function is realized, and moreover, the high speed switch also can be realized.

The invention provides a solid-state imaging device, a manufacturing method thereof, and an electronic apparatus comprising the solid-state imaging device. The solid-state imaging device includes: pixels each including a hybrid photoelectric conversion portion and pixel transistors, wherein the hybrid photoelectric conversion portion includes a semiconductor layer having a p-n junction, a plurality of columnar or cylindrical hollow-shaped organic material layers disposed in the semiconductor layer, and a pair of electrodes disposed above and below the semiconductor layer and the organic material layers, wherein charges generated in the organic material layers through photoelectric conversion move inside the semiconductor layer so as to be guided to a charge accumulation region, and wherein the solid-state imaging device is configured as a back-illuminated type in which light is incident from a surface opposite to the surface on which the pixel transistors are formed. The solid-state imaging device in the invention improves sensitivity and can realize high-speed and stable drive.

The invention discloses a vehicle-mounted wind-driven generator system, which converts resistance wind energy generated by an automobile in running process into electric energy by a particularly designed vehicle-mounted wind-driven generator system. The generated electric energy is used for charging vehicle-mounted batteries in one aspect and supplying power to an automobile motor in another aspect in the running process of the automobile; thus, the running speed and the driving mileage of an electric automobile and a hybrid electric vehicle are improved.

The invention provides a photovoltaic charging control system. The system comprises a control module and a voltage sampling module, one end of the control module is connected with a photovoltaic assembly, and the other end of the control module is connected with a storage battery; the control module comprises a charging control module, an anti-reverse charging control module and an MCU control module; and the voltage sampling module comprises a photovoltaic voltage sampling module and a storage battery voltage sampling module. The control system can samples a photovoltaic voltage in real time, and has the advantages of simple structure, low cost, high-speed switching, high stability and high reliability. The invention further provides a control method based on the photovoltaic charging control system, and solves the sampling problem of an existing common anode charging circuit in a switch tube turn-off period and the control problem when a circuit does not share the ground.

The invention provides a camera which can be driven in a high speed and shorten time delay in the case of carrying out shutter action in a second shooting preparation state such as the live view display. When the camera is in a live view display state, the magnet adsorption (S5) in the shutter first curtain is relieved, thus allowing the shutter first curtain to move and carrying out live view display (S7) according to the output from CCD221; in such moment, shutter rear curtain keeps in a connection (absorption) state, and the shutter is in an open state. The AF switch is put through (S11), and the shutter rear curtain also keeps in an open state when the phase separation AF based on TTL measuring distance, thus reducing the tight load on the shutter and shortening time delay.

A ramp generator circuit (130) comprises a reference voltage generator unit (134), which, prior to a comparison operation of an analog-digital conversion circuit (120), converts a voltage of a reference signal (Vr) to a comparison apparatus setting voltage (VR) which corrects a voltage disparity between the reference signal (Vr) and an analog input signal (Vs1-Vsn), and outputs a ramp signal as a base point of the comparison apparatus setting voltage (VR) together with the commencement of the comparison operation. The ramp generator circuit (130) further comprises a function which adds a prescribed enhanced voltage (VA) to the comparison apparatus setting voltage (VR) prior to the comparison operation.

The invention relates to a separating type flexibly driven spindle system for a high-precision processing machine tool, in order to solve the problems that a motor and a spindle of a spindle system in ultra-precision processing equipment are in rigid connection, a power transmission effect is inferior and the rotation precision of the spindle is influenced by the rigid connection. After an alternated current servo motor of the separating type flexibly driven spindle system is electrified, the alternated current servo motor starts to run so as to drive a flexible driving component to rotate, and a rotating torsion is generated by a driving lever under the driving of a flat belt which is rotated so as to drive the spindle to rotate and cut. High-pressure air enters from an axial air inlet, is throttled by a radial throttling hole, and then a radial air static pressure film is formed at a radial air film clearance by the high-pressure air; the radial air static pressure film is used for supporting the spindle and a radial load of the spindle; an axial air static pressure film is formed at an axial air film clearance by the high-pressure air after the high-pressure air is throttled by a first axial throttling hole; and the axial air static pressure film is used for supporting the spindle and an axial load of the spindle. The separating type flexibly driven spindle system provided by the invention is used for ultra-precision turning lathes and ultra-precision milling machines in various forms.

The invention discloses a low-power-consumption and large-flow high-speed switching valve. The switching valve is of a rotary valve structure. Rotation of a valve element of the switching valve is controlled by a differential swinging cylinder. The rotating direction of the differential swinging cylinder is controlled through a two-position four-way high-speed switching valve body. Three through flow passages are formed in the valve element in the radial direction and sequentially distributed in the axial direction, and the distances between the center lines of the adjacent flow passages in the axial direction are equal. The passage area of the middle flow passage is twice the passage areas of the two end flow passages, and the passage areas of the two end flow passages are equal. The flowing direction of oil in the middle flow passage is opposite to the flowing direction of oil in the two end flow passages. Inlets and outlets of the three flow passages are communicated respectively. When the high-speed switching valve body is in the totally-opening state, the flow passages are in a through pipe type, the passage pressure losses of a valve opening are small, and low-power-consumption and large-flow flowing of oil can be achieved.

The invention relates to a petroleum mixing and conveying pump. The pump casing body is divided into an inflow cavity and a driving cavity; the constricted end of the inflow cavity is provided with a feeding port; A pressure impeller with a conical table structure is rotatably connected to the tail, and the pressure impeller includes a support block. A number of driving blades coplanar with the axis of the support block are arranged in an array on the support block. A plurality of discharge nozzles are arranged in an annular array on the inner wall of the inflow cavity corresponding to the distribution plate. A centrifugal impeller is rotatably connected in the driving cavity. The centrifugal impeller includes a rotating block. The annular array is provided with a number of centrifugal blades on the rotating block. The centrifugal impeller The support block and the rotating block of the pressure impeller are coaxially rotated and fixed, and a number of inflow nozzles are arranged in an annular array on the inner wall of the driving cavity. The inner wall is provided with a liquid inlet, and a liquid discharge port is provided at the end of the axis of the drive cavity.

The present invention relates to a plasma display device, and more specifically, relates to a plasma display device and a driving method thereof for adjusting a positive waveform voltage negatively applied to a sustain electrode, improving discharge accuracy, and improving jitter characteristics . As described above, the plasma display device in the present invention includes: a plasma display panel including sustain electrodes; a sustain drive unit that drives the sustain electrodes; and controls the sustain drive unit so that subfields (frame) During the falling edge period of sub-field) and the positioning period or during any one of the positioning periods, the positive polarity waveform voltage applied to the above-mentioned sustain electrode is changed from the first voltage level to the second voltage level with a certain gradient. The drive pulse control unit.

The invention provides a special three-level drive circuit for a CCD. The special three-level drive circuit for the CCD solves the problem that an existing three-level signal drive design scheme of a CCD image sensor is complex. The drive circuit comprises a first driver, a second driver and a triode. Both the first driver and the second driver comprise VDD ends, GND ends, signal input ends and signal output ends. The drive circuit is provided with two input ends and one output end. The two input ends of the drive circuit are the first input end and the second input end respectively. The first input end is connected with the signal input end of the first driver, and the second input end is connected with the base electrode of the triode. The signal output end of the second driver serves as the output end of the drive circuit. The special three-level drive circuit for the CCD can generate CCD sensor three-level signals of which the amplitude is stable.

The invention discloses a plasma display device, including a first drive section providing a driving signal to the sweeping electrodes formed on the plasma display panel; a second drive section providing a driving signal to the sustain electrode; and a drive control section, generating a control signal controlling the operations of the first and second drive sections and transmitting the control signal to the first and second drive sections. If error occurs when the drive control section transmits the control signal to the first drive section, the drive control section will terminate the transmission of the drive control section to the second drive section. When the invention transmits a control signal to one of the scanning drive section and the sustain drive section, if error occurs, the invention will terminate the transmission of the drive control section to the other drive section, accordingly the invention can prevent damage to the drive circuit and improve the reliability of the plasma display device.

A plasma display device and a driving method thereof are provided to accelerate the operation speed of the plasma display device by reducing an addressing time. A plasma display device includes a plasma display panel(100), a scan driver(123), and a timing controller(121). Plural scan electrodes are formed on the plasma display panel. The scan driver drives plural scan electrodes. The timing controller adjusts the number of sub-fields according to the load amount of an image signal to be displayed on the plasma display panel. The timing controller controls the scan driver, so that a portion of the scan electrodes are scanned during an address period of at least one sub-field according to the adjusted number of sub-fields. The timing controller reduces the number of sub-fields as the load amount decreases.