373results about How to "Short adjustment time" patented technology

The invention discloses a method for realizing automatic adjustment of a Gamma curve of a television through a computer, which is mainly characterized in that a user sets up picture quality indexes needing to be adjusted through a human-computer interface on the computer; meanwhile, the current practical Gamma data of the television is collected by the computer and is calculated through using a Gamma automatic adjustment algorithm; the calculated adjustment data is sent to a receiving end of the television; data information forwarded by the computer is timely received by the television through an RS232 interface and is decrypted; control contents of the computer, which mainly comprise red-green-blue (RGB) information of the Gamma curve, are responded according to contents of an information packet; and through repeated calculation and adjustment, the automatic adjustment of the Gamma curve of the television is finally realized. By adopting the method, the regulated Gamma curve has high transitivity, and has the characteristics of good adaptability, quick adjustment speed, high veracity and good safety.

A sub-carriage includes a first head mounting portion and a second head mounting portion. The second head mounting portion includes at least a portion of constitution members of an adjustment mechanism which adjusts a position of the second head, a first recording head of one side of the same set is fixed in a state of being positioned to the first head mounting portion so that the nozzles are disposed in a defined position, and a second recording head of the other side is fixed to the second head mounting portion in a state where the relative position to the first recording head is defined by the adjustment mechanism based on a landing position in a recording medium of ink ejected from predetermined nozzles of the second recording head with respect to a landing position in a recording medium of ink ejected from predetermined nozzles of the first head.

The invention discloses a control circuit of a two-way DC/DC (Direct Current/Direct Current) power converter and a control method of the control circuit, and belongs to the field of control circuits of power converters. The control circuit comprises a voltage division detection circuit, a voltage follower, an A/D (Analog to Digital) conversion circuit, a digital controller and a driving circuit. The control method takes control of voltage of a high voltage side as an example, and comprises the steps of stabilizing the voltage of the high voltage side by the digital controller in a PID (Proportion Integration Differentiation) control mode when the power converter operates in a steady state, and switching to capacitor charge balance control in a corresponding Buck or Boost mode from the PID control mode when the voltage division detection circuit detects that a fluctuation of the voltage of the high voltage side exceeds a set threshold. For the problem of poor dynamic property of the two-way DC/DC power converter in the prior art, the control circuit ensures an optimal transient state response process, has high steady state output accuracy, and is applicable to any non-isolated two-way DC/DC power converter.

The invention relates to a rolling curtain drive device, which comprises a motor and a control section, wherein the control section comprises a microprocessor, a switch circuit, a memory, and a control signal circuit; the motor is connected with a drive power supply through the switch circuit; the switch circuit is connected with the microprocessor; the memory is connected with the microprocessor; the control signal circuit is connected with the microprocessor and is provided with an uplink key, a downlink key and a stop key; the control signal circuit also comprises a control signal receiving circuit, a control signal output circuit corresponding to the control signal receiving circuit, and ID keys respectively arranged on the control signal output circuit and the receiving circuit; the receiving circuit is connected with the microprocessor; and the control signal output circuit can output data information including ID codes, key position and function code of the control signal output circuit and capable of regulating the motor rotation direction to the control signal receiving circuit. Accordingly, the drive device can regulate the motor rotation direction without changing the mounting position of the motor on the reel or the direction of curtain cloth surrounding the reel. The invention relates to the drive device and the method capable of regulating motor rotation direction of rolling curtain.

The invention discloses an SMT ((Surface Mount Technology) closed-loop integrated optimization system and an optimization method thereof. The SMT closed-loop integrated optimization system comprises a data acquisition module, a chip mounter performance evaluation module, an integrated optimization module and a database management module. The optimization method comprises the steps of: when an SMT production line is started, firstly obtaining performance indexes of the chip mounter and combining with PCB (Printed Circuit Board) information by the integrated optimization module to obtain a balanced optimization scheme; distributing the production plan through the balanced optimization scheme; at the same time, acquiring physical parameters in the mounting process of the chip mounter and the chip mounting quality parameters after the production are acquired in the running and producing process of the chip mounter of the SMT production line; obtaining performance indexes of the chip mounter and feeding back the performance indexes to the integrated optimization module to serve as the reference basis of selecting the chip mounter when the balanced optimization scheme is obtained after the next SMT production line is started. In addition, repeated optimization is carried out when a sudden event occurs. According to the invention, the performance of the chip mounter and the PCB information are considered in the optimization process, and the production efficiency and stability of the whole SMT production line are improved.

The invention discloses a triaxial stable platform and an all-digital control system and method. The triaxial stable platform solves the problem that the existing stable platform has a smaller size, harsh structural adaptability and higher use performance requirements. The triaxial stable platform creatively utilizes small-scale high-precision inertial instruments such as fiber optic gyroscopes, photoelectric encoders and brushless torque motors and utilizes a novel distribution and digitization form of a stable loop computer, a high-speed serial bus and an inertial instrument data acquisitionunit so that the stable system size is greatly reduced. The triaxial stable platform utilizes a synchronous clock as a frequency marker so that inertial data acquisition, control rate calculation andtorque current transmission are realized. The brushless torque motor performs current vector control. The stable loop computer realizes a fiber-optic gyroscope error compensation method and integraldelay control strategy through a high-performance digital signal processor and realizes platform coordinate system stabilization along an inertial space direction.

The invention provides a device and method for automatically loading an anti-islanding protection test system. The device comprises a data acquisition unit, a data processing unit and a RLC load adjusting unit, wherein the data acquisition unit, the data processing unit and the RLC load adjusting unit are sequentially connected. The RLC load adjusting unit respectively controls a load switch K1, a network side switch K2 and a combination switching switch of the RLC load adjusting unit through output signals. The corresponding automatic loading method is used for detecting the output power of a photovoltaic system on line and in real time, RLC loads are rapidly, automatically and accurately adjusted, resonance of three-phase independent alternating current electric equipment is generated, and the testing process is convenient to conduct, fast and accurate.

The invention discloses a DC micro-grid system and a variable droop coefficient control method thereof. The DC micro-grid system comprises three converter units, two resistive loads, a TMS320F28335 controller and its accessory circuit. The variable droop coefficient control method, compared with the conventional droop control, incorporates voltage recovery control and droop coefficient correctioncontrol. The method performs voltage compensation control on the output voltage minimum value, achieves a control objective that the converter output voltage minimum value is the same as a set reference value, and solves the large deviation of the conventional droop control DC bus voltage and the set voltage reference value. The method fixes the droop coefficient of one converter, and obtains thedroop coefficient compensation terms of the remaining converters by the droop coefficient correction control. The droop coefficient reference value is superimposed onto the droop coefficient compensation terms so as to form a corrected droop coefficient. Then the droop control is performed, thereby achieving a control objective that the converters equally distribute the load current under the condition that the line resistances have a large difference, and solving the problem that the shunt accuracy decreases when the line resistances of the converters are inconsistent.

The invention belongs to the technical field of hydraulic adjustment and particularly relates to an automatic oil feeding type isomorphic double-cylinder leveling system. The system comprises a driving cylinder, a controller, a proportional solenoid valve, a driven cylinder and a redundancy inclined angle sensor, wherein rodless cavities of the driving cylinder and the driven cylinder are communicated and rod cavities of the driving cylinder and the driven cylinder are communicated; the controller is respectively and electrically connected with the redundancy inclined angle sensor and the proportional solenoid valve; the redundancy inclined angle sensor is used for feeding a detection result back to the controller; an output signal of the controller drives the opening and closing of the proportional solenoid valve; the proportional solenoid valve (3) can be used for carrying out oil supplementation on oil leaking cavities in the driving cylinder (1) and the driven cylinder (4). With the adoption of the system, the leveling process is safe and convenient and does not need to be subjected to artificially interfered; the problem that a working platform of an overhead working truck is inclined, caused by leaking of oil, is solved.