33results about How to "Fast steady state" patented technology

Disclosed are a switching regulator and a control circuit and a control method therefor. In one embodiment, the control circuit generates a supplementary signal varying with a state parameter of the power stage in a first mode and keeps the supplementary signal substantially unchanged in a second mode with respect to the value thereof at the moment of switching from the first mode to the second mode so that the supplementary signal at the moment of mode switching is maintained substantially constant, therefore, a steady state can be achieved quickly, and ripples in the output voltage are restrained.

The invention discloses a method of using an SMA wire to drive an active part to move, which comprises steps: the temperature of a first SMA wire rises to a first temperature, the temperature of a second SMA wire rises to a second temperature, the first temperature is higher than an SMA wire deformation critical temperature, the second temperature is lower than or equal to a deformation critical temperature, the first SMA wire at the first temperature and the second SMA wire at the second temperature are located at a first contraction position and a second stretching position after stabilization, and the active part moves to a desired position corresponding to the first contraction position and the second stretching position under drive of the first SMA wire and the second SMA wire.

A communication timing control apparatus for use in the nodes of a communication system includes a signal communication unit that transmits a state variable signal to neighboring nodes and receives state variable signals from those nodes. An external control signal, such as a beacon signal transmitted by a control node, is also received. The state variable signals indicate internal operating states or timings of the nodes; the control signal indicates a basic transition rate. A timing decision unit causes internal state or timing transitions to occur at timings responsive to the basic transition rate and the received state variable signals, adjusting the transition timings so as to avoid signal collisions and to adapt to changing system conditions, Use of the control signal enables a steady timing state to be reached quickly.

The present invention provides a motor control system and method thereof. The motor control system comprises a motor controller and a compensation device. The motor controller is used for generating a motor control output according to a reference signal and a first signal. The compensation device is used for generating a compensated motor control output according to the motor control output and a second signal. Moreover, the compensation device utilizes the compensated motor control output to reduce the steady-state phase error between the first signal and the reference signal.

A method for adapting an upper headlight beam boundary of a light cone of at least one headlight of a vehicle. The method includes detecting a time curve of a pitch rate of the vehicle or a value that is dependent on the pitch rate and / or of a roll rate of the vehicle or a value that is dependent on the roll rate. The method also includes ascertaining an envelope curve and / or an amplitude of the time curve and / or an average value of the time curve. The method also includes providing a control signal for adapting the upper headlight beam boundary of the headlight beam.

A substrate etching method and a substrate processing device, the substrate etching method includes: S1: placing a substrate to be processed into a reaction chamber; S2: supplying etching gas into the reaction chamber; S3: turning on an excitation power supply to generate plasma in the reaction chamber; S4: turning on a bias power supply to apply bias power to the substrate; S5: turning off the bias power supply, and meanwhile, starting to supply deposition gas into the reaction chamber; S6: stopping supply of the deposition gas into the reaction chamber, and meanwhile, turning on the bias power supply; S7: repeating steps S5-S6, until the etching process is completed. In the whole etching process, the etching operation is always performed, and the deposition operation is performed sometimes. Therefore, during the deposition operation, the plasma in the reaction chamber can etch away at least a part of deposited polymers formed by the deposition operation on a sidewall of an etched section, so that the sidewall of the etched section of the substrate is smooth.

The invention discloses a control method and a device for an initial openness of an electronic expansion valve and an air conditioning system. The method comprises the steps of: obtaining a present outdoor temperature; calculating a proportional parameter corresponding to the present outdoor temperature based on preset calculation rules; calculating a target operation frequency of an air conditioning set; calculating a product between the proportional parameter and the target operation frequency of the air conditioning set to obtain an initial openness numerical value of the electronic expansion valve; and controlling the electronic expansion valve to operate according to the initial openness numerical value. The method can enable the electronic expansion valve to work according to the proper initial openness so as to help the air conditioning system to quickly enter a stable state; and compared with the prior art, a certain energy saving effect is achieved in the operation process.

The invention discloses a shock-absorbing adjustment mechanism for a plane mirror. The plane mirror is suspended on the main structure by a thin steel belt through half-threaded bolts. The side thread adjustment rod of the plane mirror, the back adjustment mechanism, the back thread adjustment rod, and the bottom thread adjustment rod jointly realize the shock absorption and high-precision adjustment function of the plane mirror. The advantage of the shock-absorbing adjustment mechanism is that the plane mirror can quickly enter a stable state through the high-precision adjustment mechanism under the condition that the plane mirror is only slightly deformed.

The invention discloses a computer hard disk quick-installation damping bracket and mainly relates to the field of computers. The bracket comprises a frame-shaped rack, a gasket, a double-square-shaped frame and a hard disk bracket sequentially sleeving from outside to inside, the frame-shaped rack is detachably fixed in a hard disk area of a computer cabinet, the gasket is a U-shaped metal wire wound gasket matched with the inside of the frame-shaped rack, the hard disk bracket is slidably connected with the double-square-shaped frame, multiple twisting elastic pieces are arranged at the topand the bottom of the double-square-shaped frame, the hard disc bracket is elastically connected with the double-square-shaped frame through the twisting elastic pieces, and a plurality of layers of hard disc positions are arranged on the hard disk bracket. The bracket has the advantages that the bracket can effectively absorb resonance in the cabinet, can quickly buffer and absorb violent rigid vibration caused by collision, can quickly restore stability and has good vibration-preventive protection effect on hard discs.

A novel band-spring-based solar sailboard unfolding and supporting mechanism belongs to the field of unfolding mechanisms applied to satellite solar battery arrays and aims to solve the problems of low unfolding rigidity and low base frequency in the prior art. The mechanism comprises a solar sailboard, coil-spring driving hinges, a satellite body, strut hinges, a lower strut, a band spring and an upper strut; the solar sailboard and the satellite body are connected by the coil-spring driving hinges, two ends of the band spring are respectively connected with the upper and lower struts by adapters, the upper strut is connected with the solar sailboard by one strut hinge, and the lower strut is connected with the satellite body by the other strut hinge; coil springs in the coil-spring driving hinges, the band spring and the strut hinges provide unfolding moment so as to realize the unfolding of the solar sailboard. According to the novel band-spring-based solar sailboard unfolding and supporting mechanism, the solar sailboard, the satellite body and the upper and lower struts form a whole to constitute a stable supporting structure shaped like a spacial tetrahedron, so that the base frequency and the rigidity of a system under an unfolding state are improved.

The invention provides a method and a device for suppressing residual oscillation of a cantilever crane, which are applied to an engineering machine. The engineering machine comprises the cantilever crane and an actuating mechanism for controlling the movement of the cantilever crane. The method comprises the following steps of acquiring indication information reflecting the oscillation amplitude of the cantilever crane; determining the oscillation situation of the cantilever crane according to the variation trend of the indication information, wherein the oscillation situation comprises the oscillation direction of the cantilever crane; controlling the actuating mechanism to apply the interference force for reducing the oscillating amplitude of the cantilever crane onto the cantilever crane in the current oscillation direction of the cantilever crane according to the oscillation situation under the situation that the cantilever crane stops movement and the residual oscillation of the cantilever crane is started. By utilizing the technical scheme, the technical problems in the prior art that the time for stabilizing the cantilever crane is long, the residual oscillation amplitude is large and the like can be solved, so that the cantilever crane can be rapidly stabilized after the variable-amplitude movement is stopped, and the working efficiency is improved.

The invention discloses an automatic gain control method and device for a CVBS (Composite Video Broadcast Signal). The method comprises the steps of receiving a CVBS, and performing translation to obtain a translation signal of which the back porch is a 0-based signed number; multiplying the translation signal by an automatic gain value to obtain an amplified signal; solving the feature level of the amplified signal, acquiring a synchronous gain value and a peak gain value, performing filtration and amplitude limitation on the smaller value to obtain the automatic gain value, returning to the front step, and multiplying the translation signal by the automatic gain value. The acquired automatic gain value is more accurate by solving the feature level of the CVBS, and the method and the device is not only suitable for automatic gain control of normal CVBS but also suitable for automatic gain control of nonstandard signals, so that the overall watching effect of images is not influenced. In addition, automatic gain adjustment is quickly performed in view of the initial state during startup or plug-unplug of the system, so that images can reach the stable state more quickly, and long-time white or dark images do not appear.

The present application discloses a method for using SMA wires to drive the movement of movable parts, including: raising the temperature of the first SMA wire to a first temperature, and raising the temperature of the second SMA wire to a second temperature, wherein the first temperature is higher than that of the SMA wire The deformation critical temperature, the second temperature is lower than or equal to the deformation critical temperature, the first SMA line at the first temperature and the second SMA line at the second temperature are respectively in the first contraction position and the second stretching position after stabilization, so The movable part is driven by the first SMA wire and the second SMA wire to move to a desired position corresponding to the first retracted position and the second stretched position.

The invention discloses a drying room of a circular screen printer. The drying room of the circular screen printer comprises draught fans, heat sources, a conduction band, a conduction band roller, cloth press rollers, an air outlet and a baffle, wherein the area of the drying room is divided into an upper area, a middle area and a lower area by fabric and the baffle; the drought fans are of three different types, the number of the drought fan of the largest type is three, and the drought fans of the largest type have an air blowing function and are located in the area formed by the fabric and the upper portion of the drying room, the number of the drought fans of the middle type is three, the drought fans of the middle type have an air suction function and are located in the area formed by the baffle and the lower portion of the drying room, the number of the drought fans of the smallest type is two, and the drought fans of the smallest type have the air suction function and are located in the area formed by the baffle and the fabric; the number of the heat sources is three, the heat sources are fixedly hung on the room top of the drying room through small metal bars, and the positions of the heat sources correspond to three air blowers; the combination body of the conduction band and the conduction band roller is arranged in an inclined direction and forms a 30-degree angle with the horizontal plane, the number of the cloth press rollers is three, and the cloth press rollers are located on the downstream in the running direction of the fabric; the baffle is connected with the front face and the back face of the drying room, and gaps are formed between the baffle and the left face and the right face of the drying room; and the air outlet is communicated with an fabric outlet.