70results about How to "Increase drive power" patented technology

The invention discloses a coaxial-type double-power coupling device and a driving system of a hybrid electrical vehicle. An internal combustion engine, a clutch, a speed-regulating motor, a planetary gear set and a torque output shaft are installed on the same axial line in sequence; and the output shaft of the internal combustion engine is connected with the clutch, and the output shaft of the clutch penetrates the hollow structure of a rotor of the speed-regulating motor to be concentrically connected with the torque output shaft; and the rotor of the speed-regulating motor is coaxially connected with a sun gear of the planetary gear set and a planet carrier of the planetary gear set is connected with the torque output shaft in a transmission manner. When the electric vehicle is started or runs at a low speed, a tandem type hybrid driving system is formed; when the electric vehicle runs at a medium speed or at a high speed, a power direct-driving system of the internal combustion engine is formed; and when the electric vehicle runs with high power, for example, accelerating or climbing on a slope, a parallel type hybrid driving system is formed. The invention has the advantages that the speed-regulating motor is connected with the torque output shaft in a transmission manner through the speed reduction of the planetary gear set, therefore, the output torque of the motor drive can be increased.

The invention discloses a nonorthogonal conical gear wheel pair, a manufacturing method thereof and a nonorthogonal conical gear wheel limited slip differential consisting of the gear wheel pair, and belongs to the technical field of mechanical driving. The nonorthogonal conical gear wheel pair is characterized by comprising a conical gear wheel (1) and a large gear wheel (2); a helical conical gear wheel axis (3) crosses with a large gear wheel axis (4) in space, and sigma is the fixed included angle of the two axes, and is greater than 0 DEG, but is smaller than 90 DEG; the distance between the two axes is the center distance a of engaging driving; and the nonorthogonal conical gear wheel pair consists of the helical conical gear wheel (1) and the large gear wheel (2) which satisfy the space position relationship of the two axes and the installing distance R1 and R2 of the engaging driving. The nonorthogonal conical gear wheel pair is applied to the motion of the non-90 DEG space crossing axes and the power driving, and the nonorthogonal conical gear wheel limited slip differential is applied to a torque sensing self-locking type differential between axles or wheels of the vehicle.

The invention discloses a linear ultrasonic motor stator and an electric excitation method thereof. The stator comprises a stator elastic body and piezoelectric ceramic pieces, wherein an open slot isformed in the stator elastic body along the length direction, and the stator elastic body is divided into a driving body and two symmetrical driving legs by the open slot; the piezoelectric ceramic pieces in axial symmetry are attached to the two opposite outer side surfaces of the two driving legs, and driving feet extending outwards are arranged at the upper ends of the two driving legs respectively; and the piezoelectric ceramic pieces are coated with an electrode layer. The electric excitation method comprises the steps of 1) bonding the piezoelectric ceramic pieces; 2) preparing electrifying electrodes; and 3) simultaneously exciting local second-order bending vibration of the driving legs and overall first-order longitudinal vibration of the stator twice by using two paths of same-frequency sinusoidal voltage signals, and finally realizing forward and reverse movement of a driving rotor. According to the invention, the local second-order bending vibration of the two driving legsof the stator and overall first-order longitudinal vibration of the stator are combined and degenerate, and elliptical vibration of the driving feet is achieved.

The invention discloses a method, a device and a respirator for voltage stabilization of continuous positive pressure ventilation. The method comprises the following steps: receiving a flow rate of a respirable gas in a pressurized flow, which is measured by a flow sensor, according to a preset time interval; ensuring a second derivative of the flow rate of a preset time point; acquiring an average flow rate, air leakage, an inspiration tidal volume and inspiration time; judging whether the average flow rate is greater than the air leakage; if so, determining a gain value to be a product of a value of a quotient of the inspiration tidal volume divided by the inspiration time minus the air leakage and a first coefficient; if not, determining the gain value to be a product of a value of a quotient of the inspiration tidal volume divided by the inspiration time minus the air leakage and a second coefficient, wherein the first coefficient is greater than the second coefficient; determining a respiration vector which is a product of the gain value and the second derivative; and controlling a driving signal of a baseline configuration pressure generator on the basis of the respiration vector and a pressure generator. The method foresees a flow rate variation trend through the respiration vector, controls the flow rate of the current time point, and guarantees stable output pressure of the respirator.

The invention relates to a method for controlling a wheel rotational speed of a wheel of a drivable axle of a two-track vehicle having two drivable axles and a corresponding vehicle, wherein the vehicle has a first drive motor for driving the first axle, a second drive motor for driving the second axle, a device for sensing driving state variables, and a control device. The method comprises the following steps: determining an actual rotational speed of the first axle, determining a target rotational speed for the second axle in dependence on the actual rotational speed of the first axle, and controlling the second drive motor in such a way that the determined target rotational speed is set at the second axle. In order to determine the target rotational speed, a synchronous target rotational speed at which the same wheel circumferential velocity is set at at least one wheel of the second axle as at the wheels of the first axle is determined in dependence on the actual rotational speed of the first axle. The target rotational speed for the second axle is then determined in dependence on the determined synchronous target rotational speed.

The invention relates to a switched reluctance motor speed regulating device, a switched reluctance motor, and a speed regulating method. The switched reluctance motor speed regulating device comprises a main control unit, a power supply unit used for providing working voltage, a position detection unit used for detecting the relative positions of a stator and a rotor of a switched reluctance motor and generating position detection information, and two or more power inverter units. The main control unit is used for generating a control instruction according to a speed regulating instruction which is input by a user and carries speed regulating parameters and the position detection information, and sends the control instruction to the two or more power inverter units. The two or more power inverter units are used for driving the switched reluctance motor according to the control instruction to enable the switched reluctance motor to run in a working state corresponding to the speed regulating parameters under the joint drive of the two or more power inverter units. High-power speed regulation can be realized without the need for special design of the motor.

The invention relates to a power transmission mode and a structure of a nipper of a comber. In the transmission structure of the nipper of the comber, a pivot of the nipper (12) is rotatablely connected with a support bar (11) which is positioned on the lower part and is rotatablely connected with a base. A rotating wheel (1) of a servo motor mechanism is connected with the other pivot of the nipper (12) by an eccentric wheel (18) in an eccentrically rotating manner. A servo motor A (7) of two servo motors is meshed with a planetary carrier gear (9) of a planetary gear by a gear (6) of the servo motor A, and the other servo motor B (8) is meshed with a rear planetary gear (4) by a central gear (10) of the planetary gear. A front planetary gear (3) is meshed with a drive output gear (2) which is coaxially connected with the rotating wheel (1). The gear (6) of the servo motor A and a gear (9) of the servo motor B can be both meshed with a coaxial output gear (2) of the rotating wheel (1). The motion trail of the nipper is adjustable, thus conducing to optimizing the nipper motion, simplifying the structure and conducing to improving the speed of the comber and the combing quality.

The invention provides a novel method for hot cutting. The method is characterized by comprising the following steps that: alternating current is fed into an inverter to generate medium frequency alternating current after being subjected to rectifying, wave-filtering and chopping; and the medium frequency alternating current is subjected to voltage reduction by a power transformer, and secondary rectifying and wave-filtering to form stable direct current to be supplied to cutting arc. The method has the advantages that dropping characteristic is set to generator characteristic, so that the method has high success probability of arc generation and low power consumption; inverter technology is the key point of realizing high power output by an inverse air plasma cutting power supply, IGBT is used as a switch element, and a full-bridge inverse circuit is adopted, so that quick and low power consumption controllable alternating current output can be realized; drive power can be effectively improved, optimal drive voltage is selected, and implementation of overvoltage overcurrent protection is the basic use principle of the IGBT module; and reasonable selection of the medium frequency transformer can improve system reliability.

The invention provides a multichannel gate-all-around transistor. The multichannel gate-all-around transistor comprises: a semiconductor substrate; an insulating layer which is provided with a groovewhich does not penetrate through the insulating layer; a semiconductor nanowire structure which is suspended in the air, stretches across the groove and comprises semiconductor bosses located on the two sides of the groove and a plurality of semiconductor nanowires connected to the bosses; a gate dielectric layer and a gate electrode layer which surround the semiconductor nanowires; a source region and a drain region which are formed at the end parts of the semiconductor nanowires, wherein the plurality of semiconductor nanowires between the semiconductor bosses form a multichannel channel region together; and a source electrode and a drain electrode. The width of the groove below the multichannel gate-all-around transistor is smaller than that of the semiconductor nanowires, so that an unnecessary overlapping region between the bottom gate and the source drain can be effectively avoided, the scattering of carriers in a channel is reduced, the parasitic capacitance of the source drainis reduced, and the high-frequency characteristic of the device is improved. The gate-all-around transistor is provided with a plurality of channels, the driving power of the transistor can be greatlyimproved, and the integration level of a device is improved.