37results about How to "Short control time" patented technology

The invention relates to a device for releasing in a pulsed manner a fluid amount (3) that can be stored in an accumulator housing (2), in particular for carrying out a start-stop function in automatic transmissions, comprising a piston (5) supported against a first energy store (4), which piston can be moved inside the accumulator housing (2) and together with said housing (2) limits the fluid amount (3) that can be accommodated, wherein the piston (5) is held by a valve unit (6) at least in a position equivalent to the maximum volume of the fluid amount (3) in the accumulator housing (2) in that a fluid-conducting connection (7) between the accumulator housing (2) and a load (8) is blocked by the valve unit (6), said device for releasing in a pulsed manner the fluid amount (3) that can be stored in the accumulator housing (2) being characterized in that the valve unit (6); is made up of at least one seat valve (9).

An optical fiber amplifier is disclosed for amplifying an input optical signal in the long wavelength band. The amplifier include first and second pumping light sources, a photo detector for detecting the intensity of the input optical signal, an erbium-doped optical fiber, and a controller. The optical fiber is brought to a first-pumped state by the first pumping light output from the first pumping light source. This generates an amplified spontaneous emission in the short wavelength band. The optical fiber is brought to a second-pumped state by the amplified spontaneous emission and outputs an induced emission light in the long wavelength band. The second pumping light source outputs a second pumping light in the same wavelength band as the amplified spontaneous emission, while controlling the intensity of the second pumping light by an output control signal, thereby controlling the intensity of the second-pumped state of the optical fiber. The controller calculates the amount of optical intensity loss and the number of channels of the input optical signal, based on the detected optical intensity, and transmits the output control signal to the second pumping light source for compensating the loss of the input optical signal.

The invention discloses zooming glasses and a focus length adjusting method thereof. The zooming glasses comprise a micro power supply, wherein the micro power supply is used for supplying power; a visual chart acquisition system is adopted to project on a flat wall to acquire a projection visual chart; the projection height of E corresponding to the international standard vision 1.0 on the visualchart in a projection distance corresponds to the height of E corresponding to the international standard vision 1.0 on an international visual chart in a testing distance of 5 meters after adjustment; and the focus length of a liquid crystal zooming lens can be adjusted by a user through a lens focus length adjusting system according to the projection visual chart, and thus the degree of the lens is matched with actual vision of the user. According to the zooming glasses, the projection visual chart is acquired through projection, zooming of the liquid crystal zooming lens is achieved through the lens focus length adjusting system, meanwhile the vision of the user with the zoomed lens is measured in real time, then the degree of the lens is matched with the actual vision of the user, andthe zooming glasses are short in regulation and control time, convenient to operate, accurate in zooming, small in size and good in lens light permeability.

A suction roll system (1) with a rotatably mounted cylindrical suction roll (32), the cylinder jacket (34) of which is provided with a plurality of suction holes (36), which can be selectively connected via a control system individually or in groups to a vacuum system (14), is intended to make possible, in a reliable fashion, particularly short switchover times and also high flexibility, even when groups of a plurality of suction holes (36) are actuated. To this end, according to the invention, the control system comprises a fixedly mounted hollow cylinder (2) projecting into the suction roll (32) and connected by its interior volume (10) to the vacuum system (14), the cylinder jacket (20) of which is penetrated by a number of control slots (22).

The invention provides a control method for a low pressure chemical vapor deposition (LPCVD) technical production environment. The control method comprises the following steps that: S1, a temperature sensor acquires temperature information in a reaction cavity, and a vacuum degree sensor acquires vacuum degree information in the reaction cavity; S2, a feedback control device acquires the temperature information and the vacuum degree information and calculates feedback control gain parameters according to the temperature information and the vacuum degree information; S3, the feedback control device generates a temperature control signal according to the temperature information and the corresponding feedback control gain parameter and a vacuum degree control signal according to the vacuum degree information and the corresponding feedback control gain parameter, and sends the temperature control signal and the vacuum degree control signal to a temperature adjustment device and a vacuum degree adjustment device; S4, the temperature adjustment device adjusts the temperature in the reaction cavity according to the temperature control signal, and the vacuum degree adjustment device adjusts the vacuum degree in the reaction cavity according to the vacuum degree control signal.

The invention relates to a wellhead overflow prevention control system for drilling, which comprises semi-sealed large and small spool double rams located on the main cross of the wellhead, a fully-sealed single ram and an annular blowout preventer, the top of which is connected with an overflow prevention pipe ;The right side of the main cross at the wellhead is connected with a discharge manifold, the outlet of the discharge manifold is connected with a throttle manifold, and the entrance of the throttle manifold is equipped with a discharge flat valve; the left side of the main cross at the wellhead is connected There is a reverse circulation manifold; the semi-sealed blowout preventer is a double-slide preventer composed of a semi-sealed large spool gate and a semi-sealed small spool gate. The large and small spool gates are controlled by the large and small spool liquid rotation valve, its operating handle is connected with the piston rod of the semi-sealed cylinder; the compressed air is respectively connected with the P port of the spray air control valve 1, the annular air control valve, and the semi-sealed large and small spool air control valve; the semi-sealed large and small spool air The A port of the control valve is connected with the upper cavity air port of the semi-sealed large and small spool cylinder through the semi-sealed large and small spool shuttle valves. The device can realize soft shut-in for drilling tools of different specifications downhole.

The invention discloses a laser drilling device capable of automatically detecting the highest point position of a sphere and a drilling method. At present, laser drilling is performed manually, the position of material to be machined is detected through a sensing system, the focusing position is sensed by means of the visual sense of an operator, and then a motion control system is adjusted manually to reach the designated position to perform laser drilling device. The laser drilling device capable of automatically detecting the highest point position of the sphere comprises a drilling machine, an automatic detecting system is formed by a high-resolution coaxial CCD sensor and an image collecting card and connected with a computer provided with a high-precision motion control card, the high-precision motion control card is connected with a stepping motor of the drilling machine, image processing software is installed on the computer, and the highest point position of the sphere is focused accurately and rapidly through the automatic detecting system. The laser drilling device is used for laser drilling at the highest point position of the sphere.

In the vehicle brake system (10) having a valve (22) arranged between the first and second chambers (20, 24), through which the first chamber (20) can be selectively The fluid is guided into the second chamber (24) and the valve is equipped with a pre-stage (50, 52) and a main stage (54, 56) for guiding the fluid, according to the invention the pre-stage (50, 52) outside The control opening is configured and the main stage (54, 56) is configured to automatically open when the preceding stage (50, 52) is opened.

The invention provides a hybrid electric vehicle gear-shifting control method based on a multi-mode brake. The rotation speed of an oil pump motor is increased to A, the current of a negative lockup valve of the multi-mode brake is removed, the multi-mode brake is controlled to be in a two-way free state, then the torque of a small motor and the torque of a large motor are increased, the rotationspeed of a first planet carrier is quickly increased to B, then the current of a positive lockup valve of the multi-mode brake is increased, the multi-mode brake is controlled to be in a reverse locking state, meanwhile, the torque of the small motor and the torque of the large motor are controlled, the rotation speed of the first planet carrier is reduced to be lower than D according to the preset speed C and then reduced to be lower than F according to the preset speed E, finally the torque of an engine and the torque of the large motor are increased, the first planet carrier is locked by the reversely-locking multi-mode brake, and gear shifting is achieved. By the adoption of the method, the problem of impact of gear shifting in the advancing process can be effectively solved, the roleof the multi-mode brake is played, the whole vehicle torque responding time is shortened, and the whole vehicle smoothness is greatly improved.

The invention discloses an asymmetric voltage two-point active control method for a neutral point non-effective grounding system. Asymmetric voltages caused by circuit three-phase parameter imbalance can be controlled to any given target value. According to the method, injection currents for controlling the asymmetric voltages into any target value are calculated according to the calculation of the two different injection currents and the asymmetric voltages corresponding to the injection currents, three-phase earth admittance and line impedance of a measuring system are not needed in the method, self-adaptation to dynamic changes of line parameters and structures can be achieved, errors caused by line impedance voltage drop and the like can be avoided, the control speed is high, precision is high, the asymmetric voltages of the neutral point non-effective grounding system can be flexibly controlled to maintain grid three-phase voltage balance, and the safe and economical operation of a grid is ensured.

The invention provides a beam array phase control system and a method based on multiphase perturbation. Emergent laser of a laser source in the control system is input to a beam splitter; multichannel laser output by the beam splitter is input to corresponding phase controllers respectively; the phase controllers are sequentially connected with optical amplifiers and an optical collimation emitter; the optical collimation emitter is sequentially connected with an optical splitter and a far field image device; the far field image device inputs the laser into a detector; an electrical signal output by the detector is input into a phase control algorithm module; the phase control algorithm module outputs a multichannel electrical control signal to the corresponding phase controllers; and a multiphase perturbation generation module outputs a multichannel electrical modulating signal to the corresponding phase controllers. With the adoption of the system and the method, the performance of a coherent combination system can be improved, and large-scale beam combining capacity can be achieved.

The invention discloses a control system of an intelligent correction device for a precision mask of super-resolution lithography. The control system combines an optical system to realize accurate control of expected mask deformation. The overall control of the intelligent control system is completed by a high-performance industrial computer. The intelligent control system includes a host computer control system, an image acquisition subsystem, an image processing subsystem, an alignment subsystem, a lighting subsystem and sixteen independent fine-tuning masks. Die deformation control subsystem. Through the combined control of the sub-systems of the control system, the desired precise mask deformation control can be realized, which is simpler and more convenient than the existing realization methods, and the realization of the control system is also more economical. In addition, the control system uses a PCIe channel and an independent graphics card to transmit and process the alignment image signal. The precise deformation control of the mask adopts the PID closed-loop control algorithm to achieve precise regulation, which improves the efficiency of the sub-system and enables the system to be faster and more accurate. Realize mask deformation control and alignment.