139results about How to "Improve drive characteristics" patented technology

The invention discloses a multi-degree-of-freedom intelligent pneumatic muscle based on shape memory alloy deforming net. A bending guide allay coil spring, a rotary steering allay coil spring and a deforming net formed by a shape memory allay mesh grid are sequentially, tightly and axially arranged outside an elastic rubber tube, both ends of which are sealed by an external catch hoop and an inner element. When the rubber inner tube is expanded by air pressure, on the basis of passive deformation of the deforming net, active deformation is added to restrain the deformation of pneumatic muscle, thereby realizing the characteristics of adjustability and multi-degree-of-freedom. Pulse current is adopted to heat the shape memory alloy intelligent material to have active deformation. The bending guide, rotary steering shape memory alloy springs are adopted to realize the bending and rotation of the pneumatic muscle. The positive effects of the invention lies in improving the drive characteristic of the pneumatic muscle, increasing the freedom degree of the pneumatic muscle and being applicable to the fields in need of high precision, flexibility and complex drive. The pneumatic muscle of the invention can directly connect load or connect load through a drive mechanism.

The present invention provides a driving circuit capable of exerting improved driving performance while saving power consumption. A capacitive load driving circuit includes a gate driver, which drives scan electrodes aligned in a column direction of capacitive load circuits arranged in a matrix, and a source driver, which drives data electrodes aligned in a row direction of the capacitive load circuits. The source driver includes a plurality of output circuits, which are aligned in the row direction, for driving the respective data electrodes. Each of the plurality of output circuits drives the corresponding data electrode after changing the pre-charge amount on the basis of the position of the scan electrode driven by the gate driver.

A thin film transistor substrate includes; a substrate, an organic layer disposed on the substrate and including a trench formed by etching a predetermined region of an upper portion of the organic layer, a gate electrode disposed in the trench, an insulating layer disposed on the organic layer and the gate electrode, a semiconductor layer disposed on the insulating layer, a source electrode disposed on the semiconductor layer, and a drain electrode disposed on the semiconductor layer and spaced apart from the source electrode.

An organic electroluminescent compound and an organic electroluminescent device using the same. The organic electroluminescent compound having Formula 1 can be used as blue electroluminescent compound. The organic electroluminescent device using the organic electroluminescent compound having Formula 1 has improved luminous efficiency and color purity.

An optical device includes a lens holder that holds a lens and is movable in the optical-axis direction of the lens, and an actuator that moves the lens holder in the optical-axis direction. The actuator includes an actuator element composed of an electroactive polymer, an actuator-element holder that holds the actuator element, a mechanism that applies prestrain to the actuator element, and a connecting member that connects the lens holder and the actuator. Herein, a connecting portion of the connecting member is disposed adjacent to the side surface of the actuator.

A miniaturized transistor with reduced parasitic capacitance and highly stable electrical characteristics is provided. High performance and high reliability of a semiconductor device including the transistor is achieved. A first conductor is formed over a substrate, a first insulator is formed over the first conductor, a layer that retains fixed charges is formed over the first insulator, a second insulator is formed over the layer that retains fixed charges, and a transistor is formed over the second insulator. Threshold voltage V_th is controlled by appropriate adjustment of the thicknesses of the first insulator, the second insulator, and the layer that retains fixed charges.

Provided is a hydrodynamic bearing motor. The hydrodynamic bearing motor, wherein oil journal bearings are formed between a shaft and a sleeve, includes: an upper thrust cover that is fitted over a top portion of the shaft and has an annular rib; a fixture that is secured to a bottom portion of the shaft and has a receiving rib; an upper capillary seal that is defined between an outer circumference of the top portion of the sleeve and the annular rib and retains oil by capillary action; and a lower capillary seal that is defined between an outer circumference of the bottom portion of the sleeve and an inner circumference of the receiving rib and retains oil by capillary action. The hydrodynamic bearing motor provides improved operating characteristics by preventing leakage of oil despite expansion of air bubbles and balancing the pressure between bearings and has improved driving characteristics due to a sufficient journal bearing length.

A thin-film transistor, a method for manufacturing the same and a display device including the same are provided. The thin-film transistor may include a substrate, and an active layer formed on the substrate. The active layer may be made from an oxide semiconductor. A gate electrode may be formed above the active layer or below the active layer. A conductive layer may come in contact with the active layer, may be overlapped with at least a part of the gate electrode, and may be insulated from the gate electrode. A source electrode and a drain electrode may be electrically connected to the active layer. The conductive layer can reduce a channel length of the thin-film transistor and increase a capacitance between the source electrode and the gate electrode or between the drain electrode and the gate electrode.

A vehicle suspension assembly includes a control rod pivotally connected between a vehicle frame and an axle. The control rod controls longitudinal and vertical movement of the axle. A spring member is pivotally connected to the frame and fixed to the axle. Air spring assemblies are mounted between the axle and frame. The rigidly mounted spring member exerts torsion forces on the axle to counter roll forces and the air spring assemblies provide favorable ride characteristics adaptable to various trailer load conditions.

A display apparatus includes a display panel, a gate driver, and a data driver. The display panel includes a plurality of gate lines, a plurality of data lines, and a plurality of pixels connected to the gate lines and the data lines to display an image. The gate driver is configured to apply a gate signal to the gate lines and the data driver is configured to apply a data signal to the data lines. At least one intermediate voltage having a voltage level between a first voltage and a second voltage and a data voltage corresponding to a specific gray scale are sequentially applied to at least one pixel of the pixels as the data signal during a frame period.

A lens driving device including: a lens barrel having at least one lens therein; an actuator having a tip friction member provided at a leading end of a body thereof to be in contact with a friction member of the lens barrel, the actuator being flexed and bent upon application of power to provide a driving force necessary for driving the lens barrel in an optical axis direction; a preload member compressing the actuator against the lens barrel to keep the friction member and the tip friction member in contact with each other; and a guiding part guiding the lens barrel to move in the optical axis direction, wherein the friction member and the tip friction member are formed of a super-hard alloy.

A lens barrel includes a mount member configured to couple the lens barrel to a camera body, the mount member having a coupling surface for coupling with the camera body, a lens holding frame holding a lens and movable along an optical axis, the lens holding frame having a sleeve portion, the sleeve portion having a front end and a rear end, and a guide bar configured to guide the sleeve portion of the lens holding frame along the optical axis. The guide bar extends to a location nearer to an image plane than the coupling surface of the mount member. The rear end of the sleeve portion is disposed nearer to the image plane than the lens.

The mixed power driven semi-towed truck is developed for eliminating the limitation of great power driver to heavy truck. It consists of towing truck and trailer, the towing truck is provided with driver and vehicular power generator set and the trailer is provided with driving motor connected to the vehicular power generator set. The semi-towed truck is dispersed driven, rather than concentrated driven, and thus has improved driving performance, raised driving efficiency, improved bearing capacity, towing capacity, climbing ability, accelerating performance, etc. The semi-towed truck has operating power determined based on the practical load and thus obvious fuel oil saving effect.

A double clutch powertrain for a vehicle makes smooth starting of the vehicle and smooth gear shifting possible despite using a dry type double clutch and makes regenerative braking and power generation possible when the vehicle decelerates, thus improving the driving characteristics of the vehicle, and enhancing the fuel efficiency of the vehicle.

The invention relates to a microstep subdivision driving control method and circuit of a fixed-frequency PWM full-bridge motor. The microstep subdivision driving control method comprises the steps offirstly, dividing natural step of a stepping motor used by a solar sailboard driving mechanism to microsteps; secondly, allowing a D/A conversion circuit of a control circuit to generate a stepping motor winding current reference sine and cosine signal and a microprocessor to generate a phase sequence signal, and sending the reference sine and cosine signal and the phase sequence signal to a driving circuit so that the two-phase winding of the stepping motor is approximate to step wave currents of a sine function and a cosine function and a low-speed rotation magnetic field is further generated in the motor; and finally, combining the reference sine and cosine signal and sawtooth wave of a fixed frequency, further modulating the current to a PWM control signal, and completing microstep subdivision driving control of the fixed-frequency PWM full-bridge motor.

The present invention relates to a method for controlling a suspension system of a motor vehicle comprising a vehicle body and a plurality of wheel pairs (2a/2b, 2c/2d), wherein the suspension system comprises spring members arranged for resilient connection between the wheels of the vehicle and said vehicle body. The method comprises the step of: monitoring at least one first parameter indicating braking of thee motor vehicle, and when said parameter indicates braking of the motor vehicle, preventing compression of the spring members of at least one wheel pair (2a/2b, 2c/2d) of the motor vehicle for counteracting a rotation of the vehicle body in connection to braking.

An optical element driving device includes an optical element holder, first and second magnets, first and second magnetic bodies each having a cross section including a vertex and first and second legs forming an opening therebetween, first and second piezoelectric elements that move the optical element holder in directions perpendicular to each other by slidingly moving the first and second magnetic bodies by vibrating the first and second magnets, and first and second magnetic sensors that detect a position of the optical element holder, wherein the first and second piezoelectric elements are driven in a state in which the first and second magnets are coupled to the first and second legs from the opening side, wherein the first and second magnets are each magnetized in directions perpendicular to a magnetization line, and wherein the second magnetic sensor is disposed at a position that is not on the magnetization line.

The invention relates to a method for actuating an automotive braking system which is provided with a brake booster (1). The method involves detecting the drive torque and/or setting position of a driving mechanism (2) of the brake booster (1) and generated pressure in a brake circuit of the brake system. The leakage in the brake loop is detected based on the stored values in a database. Inlet valves (8) of specific wheel brakes (10) are opened and the inlet valves (8) of other wheel brakes (10) are closed successively, so that the leakage is determined to exist in at least one wheel brake (10). The wheel brake ((10) is switched off during subsequent operation, particularly driving of the motor car.

The invention discloses a method for manufacturing a transparent silicon-based substrate with an integrated circuit (IC) device. The method comprises the following steps of: manufacturing an IC-on-silicon part on a silicon-on-insulator; adhering the silicon-on-insulator and a transparent substrate by using optical glue; removing a silicon base by using a mechanical thinning and chemical etching method, so that a silicon-based substrate is transparent; and punching a silicon dioxide layer, leading out an electrode and patterning. A device made of the transparent silicon-based substrate has the advantages of simple structure, high reliability, high aperture ratio and the like.