544results about How to "Improve driving effect" patented technology

Brushless DC motor (4) is driven based on a first or second waveform signal output from operation switching unit (11), which switches output so that a first waveform signal by first waveform generation unit (6) is output when the speed of rotor (4a) is determined to be lower than a predetermined speed, and a second waveform signal by second waveform generation unit (10) is output when the speed of rotor (4a) is determined to be higher than the predetermined speed. Thus, there is provided a motor driving device in which drive is stable even at high speed/under high load, and a driving range is extended.

A single folding mode is mostly adopted for the traditional folding wing, and has the limitation on the effect of reducing the ground occupied spaces of an aircraft (especially a high-span-cord-ratio airplane). The invention relates to the design of a novel folding wing capable of reducing the horizontal occupied spaces in ground driving and storage of the aircraft effectively. A three-section dual-folding wing provided by the invention is separated into three sections including an inner wing, a middle wing and an outer wing; and the wing surface is folded twice through a linkage rod folding mechanism. Auxiliary torque is provided for the inner wing hinge part by utilizing a torsional spring, and the driving performance of a folding system is improved; the wing folding/unfolding motion is continuous and stable; and the wing surface can rotate at uniform speed, and the control principle is simple.

A drive mechanism and an imaging device according to the present invention each include: an ultrasonic linear actuator 4 provided with a rod 42 that moves reciprocally in response to expansion/contraction of a piezoelectric element 41 and a first group unit 2 serving as an example of a moving body that engages with the rod 42 with a prescribed frictional force. The moving body (first group unit 2) is provided with a holding member 24, a pressing member 30 or other member that engages with the rod 42 in such a way that fluctuation in the frictional force is suppressed, and drive performance is stabilized. As a consequence, the drive mechanism and the imaging device according to the present invention can suppress fluctuation in the frictional force (gripping force) of the moving body in the ultrasonic linear actuator 4, making it possible to stabilize drive performance.

The invention belongs to the technical field of kitchen appliances, and particularly relates to an integrated cooker. The integrated cooker comprises a machine body and a range hood body; the range hood body comprises an air inlet, an air collecting box and a fan assembly; the air collecting box communicates with the air inlet; the fan assembly is arranged in the air collecting box; a volute air duct of the fan assembly extends downwards to the wall face of the bottom of the air collecting box and extends out of the bottom of the air collecting box to be rotationally provided with an air outlet base; and an air outlet is formed in one side of the air outlet base. According to the integrated cooker, the volute air duct extends downwards to the wall face of the bottom of the air collecting box and extends out of the bottom of the air collecting box to be rotationally provided with the air outlet base; the air outlet base is directly located on the outer side of the air collecting box, and the situation that a channel is located inside and occupies too much space is avoided; a through hole does not need to be additionally formed in the side edge of the machine body, and leakproofnessof the side face of the machine body is guaranteed; and meanwhile, the air outlet base is rotatably arranged, so that a user can conveniently adjust the air outlet direction according to actual needs,and humanization is achieved.

The invention discloses a radio frequency signal source with the amplitude modulation and automatic level control functions. The radio frequency signal source is characterized in that a modulation signal generating unit generates amplitude modulation signals, a variable attenuation unit is driven by drive signals to generate attenuation signals for input signal attenuation, a power distribution unit divides the attenuation signals into two paths, one path of the attenuation signals are directly output, the other path of the attenuation signals are output to a detector, the detector detects the input signals, detected signals are acquired, data processing units generate the drive signals according to the amplitude modulation signals and the detected signals, the variable attenuation unit comprises a first variable attenuator and a second variable attenuator which are connected in series, the first data processing unit generates the first drive signals for driving the first variable attenuator according to the detected signals, and the second data processing unit generates the second drive signals of the second variable attenuator according to the amplitude modulation signals. Amplitude modulation and automatic level control are separately set, the requirements of amplitude modulation and automatic level control do not need to be taken into consideration by all elements, and a circuit is easy to achieve.

The invention discloses an electronic parking braking method. The method comprises the following steps of: first, parking braking, namely transferring prestored air pressure in an air reservoir to brake chambers of each wheel by controlling an active air supply electromagnetic valve to realize the parking braking; and second, releasing braking, namely when a road section is a straight road surface, simultaneously releasing a drive wheel and a driven wheel of a controlled vehicle once; and when the road section is a downhill road section or an uphill road section, adopting a corresponding control strategy according to the rotating situations of each wheel of the vehicle, and releasing the air pressure in the brake chambers of each wheel of the controlled vehicle separately by utilizing a pressure maintaining effect of an antilock brake system (ABS) electromagnetic regulating valve. The electronic parking braking method has a reasonable design, low investment cost, high intelligence degree and good use effect, is convenient to operate, and solves the practical problems of high technical requirements on drivers, brake force transfer gap of mechanical system, great difficulties in starting operation on low-adhesion coefficient road surface and ramp, poor use effect and the like in a conventional mechanical parking braking system.

The invention discloses a preparation method for a bulk silicon nanometer line transistor apparatus, which belongs to the technical field of manufacturing CMOS GSI (ULSI). The method realizes a bulk silicon nanometer line structure by an approach from up to down; a large amount of heat generated by the apparatus can be radiated from an underlay area by a source drain area, thus effectively restraining the self-heating effect of the apparatus. Besides, as the source drain of the bulk silicon nanometer line transistor apparatus is connected with the underlay, and a large fan-out deep source drain junction can be realized, thus effectively reducing a parasitic resistance and being capable of completely showing the advantages of the characteristics of a silicon nanometer line structure; the technique has high controllability and is compatible with the traditional technique technology. Compared with an SOI (Silicon on Insulator) silicon chip, the technique manufacture cost can be effectively reduced.

Brushless DC motor (4) is driven based on a first or second waveform signal output from switching determination unit (11), which switches outputting so that a first waveform signal by first waveform generation unit (6) is output when the speed of rotor (4a) is determined to be lower than a predetermined speed, and a second waveform signal by second waveform generation unit (10) is output when the speed of rotor (4a) is determined to be higher than the predetermined speed. Thereby, drive is stable even at high speed/under high load, and a driving range is extended.

A pneumatic tire provided with a tread pattern on which a plurality of blocks are formed with circumferential grooves which extend along a circumferential direction of the tire and lateral grooves which traverse the circumferential grooves, wherein the lateral groove disposed between the blocks on the endmost tread edge region has a depth from 10 to 50% of a depth of the circumferential groove to be traversed and has a groove bottom concave portion whose both ends in a longitudinal direction are disposed inside the groove bottom, and a width of the groove bottom concave portion, which is determined on the basis of the bottom plane of the groove bottom, is from 25 to 45% of a groove width of the lateral groove.

The invention provides a mechanism for preventing electromagnetic interference of micro-lens, comprising a frame, around which four magnetism modules are arranged; a bearing seat which is used for bearing a micro-lens and externally covered with a coil pack; at least one elastic component, an external fixed part and an internal movable part of which mutually connects four groups of strings with ninety degrees, the external fixed part is connected with the frame, and the internal movable part is connected with the bearing seat, thus forming an elastic movable supporting bearing seat which is suspended at the center of the frame; an upper cover and a lower cover which are respectively arranged above and below the frame and fixedly connects the elastic component on the frame; a metal outer cover which covers the external parts of the upper cover, the elastic component, the bearing seat, the frame and the lower cover, and the bottom of the metal outer cover is provided with at least one conductive contact pin which is electrically connected to the ground, electromagnetic effect generated to the outside is insulated by the grounding mode, and the external electromagnetic interference and the electrostatic protection are also insulated.

The invention discloses a manipulator capable of rotatably lifting. The manipulator capable of rotatably lifting comprises a base, wherein a gyrating waist plate and a vertical arm are sequentially arranged on the base; the vertical arm is vertically mounted, and a suspension arm which is horizontally mounted is arranged on the vertical arm; a hoisting arm is connected to the rear end of the suspension arm; the bottom end of the suspension arm is connected with a wrist part through a plurality of gear sets; a fourth driver, and a gripper mechanism connected with the fourth driver are arranged on the wrist part. The manipulator capable of rotatably lifting is simple in structure, and easy to manufacture, and can perform multi-dimensional movement; the traditional manual operation is changed; the manipulator has the advantages of being high in production efficiency, low in equipment cost and repair cost, wide in applicable scope, reliable in transmission, high in driving performance, high in sensitivity, wide in movement range, reliable in transmission, and stable to clamp; the manipulator is high in overall performances and worthy of wide popularization.

The invention relates to a digital intelligent driving device of a high-power IGBT (insulated gate bipolar translator). The digital intelligent driving device comprises a DC/DC (direct-current) conversion circuit, a CPLD (complex programmable logic device) logic control module, an active clamping feedback module, a retreating-protection over-current feedback module and a two-stage di/dt detecting module, wherein the output end of the DC/DC conversion circuit is connected with an undervoltage protection module; the output end of the undervoltage protection module is connected with the CPLD logic control module; and the input end of the CPLD logic control module is connected with a PWM (pulse-width modulation) pulse-width modulator, and the output end of the CPLD logic control module is connected with a variable-gate resistance module. The digital intelligent driving device provided by the invention has the advantages that the protection functions such as power isolation, over-current protection, di/dt and active clamping are integrated, the logic control is realized by adopting the programmable logic device CPLD, the ideal driving performance is achieved by real-time variable-gate resistance driving, and soft shut-off is realized by selecting proper shut-off resistance according to the over-current degree, so that the switching loss is effectively reduced and a Miller effect is weakened.

A multilayer electroactive polymer actuator and a method of manufacturing the same. The multilayer electroactive polymer actuator is divided into an actuating area and a non-actuating area. A plurality of driving electrodes, each formed on a side of the respective polymer layer to correspond to the actuating area. A plurality of extension electrodes connected to the driving electrodes and a common electrode for vertically connecting the extension electrodes are formed to correspond to the non-actuating area. A via hole is formed through the plurality of non-actuating layers and has a diameter which increases in a stepwise manner upwards. The common electrode is formed in the via hole. The driving electrode includes an alloy of aluminum and copper. The extension electrode is formed of material having a small reactivity with respect to laser as compared to the reactivity of the polymer layer.

To provide an electrostatic actuator that generates high pressure under a given voltage and includes an insulating film exhibiting excellent insulation resistance, a droplet discharge head that includes the electrostatic actuator and a method for manufacturing the droplet discharge head, a droplet discharge apparatus that includes the droplet discharge head and has excellent printing performance, and a device that includes the electrostatic actuator and has excellent driving performance. A diaphragm 12, a counter electrode 17 opposite to the diaphragm 12 with a gap interposed therebetween, and an insulating film 16 on a surface of the diaphragm 12 opposite to the counter electrode 17 are included. The insulating film 16 includes at least a dielectric film 16a formed of a substance having a higher relative dielectric constant than silicon oxide.

The invention discloses a shift register and a display device. The shift register comprises a pre-charging unit, a pull-up unit, a first pull-down unit, and a second pull-down unit. The pre-charging unit receives a first input signal and a second input signal, and outputs a pre-charging signal via a first node. The pull-up unit receives the pre-charging signal, a first clock signal and a second clock signal, and outputs a scanning signal via a second node. The first pull-down unit receives the pre-charging signal, a first pull-down control signal and a second pull-down control signal, and controls whether to pull down the scanning signal to a reference level. The second pull-down unit receives the pre-charging signal, the first pull-down control signal and the second pull-down control signal, and controls whether to pull down the scanning signal to the reference level. The shift register of the invention is of high reliability and high stability. Moreover, the display quality of the display device comprising the shift register is improved.

On a restart of an engine accompanied with a change from a motor drive of a hybrid vehicle to a hybrid drive, when a temperature of a catalyst in a catalytic converter located in an exhaust pipe of the engine decreases below a preset reference temperature to be out of a specific temperature range of ensuring sufficient catalyst performance, a power restriction value is set according to the catalyst temperature and an EV drive time representing a time duration of the motor drive. An engine power demand to be output from the engine is set under output restriction with this power restriction value. The engine and two motors are then controlled with the set engine power demand. This arrangement effectively prevents poor emission and ensures good driving performance of the vehicle even in the event of a temperature decrease of the catalyst by the motor drive of the vehicle.

The invention relates to a high-precision output voltage-adjustable reference voltage generating circuit which comprises an output-adjustable current summation type bandgap reference voltage generating circuit, an output-adjustable current summation type difference reference voltage generating circuit and a reference voltage buffer driving circuit. The output-adjustable current summation type bandgap reference voltage generating circuit generates a bandgap reference voltage Vref for output; through the output-adjustable current summation type difference reference voltage generating circuit, difference reference voltages VTP and VTN are generated for output; and through the reference voltage buffer driving circuit, reference voltages Vrefp and Vrefn are output. Through current summation and a floating current source negative feedback control technology, the output voltage-adjustable fully differential reference voltage buffer driving circuit is designed. The buffer driving circuit is further of a structure with a source electrode push-pull output and duplicate circuit, a smaller output impedance is obtained while the power supply rejection ratio (PSRR) of the reference voltage is further improved, and the high-precision output voltage-adjustable reference voltage generating circuit has better driving capability.

The invention discloses an aiding hill starting method based on an anti-lock braking system (ABS) and an aiding hill starting system using the method. The method comprises a step of judging the launching of aiding hill starting, wherein the situation that a vehicle can be in an aiding hill starting launching state is confirmed, a step of aiding hill braking, wherein a pressure maintaining process is carried out on a brake air chamber, and a step of aiding the hill starting, wherein an ABS pressure reducing signal is sent to reduce the pressure in the brake air chamber to zero, and a clutch is completely combined. The system can judge that the vehicle is located in the flat ground or the slope by obtaining vehicle velocity, acceleration, tap position or foot braking information, the aiding hill starting system is automatically started to control the hill starting according to a judgment result, a driver does not need to manually operate, unnecessary backward sliding times can be reduced, and unnecessary accidents are avoided.

A vibration actuator with good driving performance, and a lens barrel and camera equipped therewith, is provided. There is provided a vibration actuator comprising: an electromechanical conversion element that is excited by a driving signal; a vibrating body including a joining face, to which the electromechanical conversion element is joined, and a driving face, at which a vibration wave is produced by the excitation; and a relative motion member that is pressingly touched against the driving face, is driven by the vibration wave, and relatively moves with respect to the vibrating body, wherein at a first and a second portion of the electromechanical conversion element in a direction parallel to the joining face and orthogonal to a direction of the relative movement of the vibrating body and the relative motion member, thickness in a direction orthogonal to the joining face differs between the first portion and the second portion.