12results about How to "Simple and reliable control method" patented technology

The utility model provides an assembly plate feeding machine which comprises a machine frame, the top end of the machine frame is fixedly connected with a bottom plate, the bottom plate is fixedly provided with a product limiting plate and a product guiding pressing block, the bottom plate is provided with a product distributing air cylinder, the lower side of the product distributing air cylinder is fixedly connected with a contact pin, and the front side face of the machine frame is fixedly connected with a supporting frame. A feeding mechanism is fixedly connected to the supporting frame. The feeding mechanism comprises a feeding air cylinder, a material arranging ejector pin, a rotating air cylinder, a discharging air cylinder and a vacuum suction cup, the output end of the rotating air cylinder is fixedly connected with the feeding air cylinder and the discharging air cylinder, a hydraulic rod of the feeding air cylinder is fixedly connected with the material arranging ejector pin, and a hydraulic rod of the discharging air cylinder is fixedly connected with the vacuum suction cup. The automatic feeding device adopts a cylinder connecting rod structure device, is stable and reliable, is high in feeding speed of the assembly plate, releases manpower, reduces the use cost, adopts automatic control on integral feeding, improves the production efficiency, and is quick and convenient to operate.

The application discloses a kind of superfast laser processing system and method that can steplessly regulate the inclination of micro slot side wall, including laser, laser exit beam is divided into two beams after beam splitter, wherein beam 1 is parallel to Y axis, beam 2 is parallel to X axis;Beam is reflected after first mirror and exits parallel to Y axis;Two beams are vertically incident into double-beam adjustable tilt moving device, and after regulating light beam, respectively through second mirror, third mirror and through first convex lens, second convex lens, it converges in a certain angle and a certain interval on the surface of workpiece to be processed, and the workpiece to be processed is clamped on three-dimensional motion platform, and the focal point of two intersecting converging beams is relatively moved with workpiece to be processed, to realize the laser etching processing of surface micro slot;The application can regulate the inclination of two sides respectively to realize the efficient controllable processing of rectangular micro channel, other side wall inclination micro channel and even negative inclination micro channel.

The motor simulator provided by the invention is used for solving the technical problems of large motor weight, large noise, high cost and large occupied area when a frequency converter motor load is subjected to a loading test. A capacitor C1 of the motor simulator is connected in parallel with a three-phase bridge circuit; three inductors of the inductor unit L1 are respectively connected with the output end of the three-phase bridge circuit; the input end of the phase voltage detection module is connected with frequency converter output voltage, and the output end is sequentially connected with the waveform shaping capture module and the switching tube waveform decomposition module; the input end of the current regulator is used for receiving a detection current signal and a set current signal, and the output end of the current regulator is sequentially connected with the duty ratio regulation module / delay angle regulation module and the PWM wave sending module; and the output ends of the switching tube waveform decomposition module and the PWM generator module are respectively connected with the logic AND gate module, and the logic AND gate module outputs signals to drive each switching tube of the three-phase bridge circuit to act so as to realize real-time tracking control of the motor simulator.

The present invention discloses a linear square pipeline modular detection robot based on a star-shaped tensegrity unit and a walking method. The robot includes a plurality of identical three-bar star-shaped tensegrity unit modules and connection nodes therebetween. The three-bar star-shaped tensegrity unit modules are connected end to end, and the connection nodes are rigidly connected; the central driving rods of each unit are collinear in the initial equilibrium state. The deformation of each three-bar star-shaped tensegrity unit is achieved by the elongation and shortening of the central driving rod. The present invention utilizes the principle of the longitudinal wave method to reasonably control the elongation and shortening of the central rod of each unit, and relies on the friction between the robot and the pipeline wall to realize the robot moving forward or backward in a straight line in the pipeline. The tensegrity pipeline detection robot has a simple control method, does not block the pipeline when crawling through the pipeline, is lightweight and efficient, has strong impact resistance, and has strong modular assembly, and has a good application prospect.

The present invention discloses a wind turbine pitch control system, which relates to the technical field of wind power generation, and in particular to a wind turbine pitch control system. The device includes a pitch hydraulic system, a controller, a calibration switch, a calibration block, a grating encoder, and a three-position four-way solenoid valve. The pitch control system controls the pitch hydraulic system actuator through the three-position four-way valve to achieve pitch action. The pitch control system is also provided with a grating encoder, which is used to collect pitch rotation angle information. The grating encoder has a high density of collected rotation signals and a high collection accuracy, thereby achieving more accurate control accuracy. The calibration switch is used to determine a predetermined position to prevent abnormal conditions such as controller reset, temporary freeze, or interference between the grating encoder and the controller during signal transmission, thereby causing the absolute angle obtained by the controller to be inaccurate.

The invention relates to a ship area keeping control method based on position offset calculation, which comprises the following steps of: (1) inputting closed polygon outer boundary points of ship dynamic positioning area keeping, setting a specific area in the outer boundary as an inner boundary, and controlling a ship to move to the center of an area keeping area; (2) stopping the control on the ship propeller, so that the ship floats freely along with the environmental force; if the ship moves to the inner boundary, the direction of a connecting line of the current position of the ship and the regional centroid position is calculated, and the direction is recorded as the optimal heading direction of the ship; (3) the ship is controlled to move back to the position where the area keeps the center, and then control over the longitudinal position and the transverse position of the ship is closed; (4) when the ship floats to the inner boundary under the action of environmental force, recalculating the direction of the connecting line of the current position of the ship and the area centroid position, and updating the optimal heading direction; and (5) moving the ship to the area to keep the center, and repeating the operations from the step (3) to the step (4).

The utility model relates to a sample scheduling system. The sample scheduling system comprises a centrifugal scheduling platform which comprises a platform plate, a supporting plate, a centrifugal machine, a grabbing unit and a pushing unit; the supporting plate is arranged on the platform plate, a guide groove is formed in the supporting plate, the guide groove is used for placing a centrifugal cup, and the centrifugal cup is used for loading a to-be-tested sample tube; the centrifugal machine is arranged below the platform plate and used for centrifuging the to-be-detected sample tube, and a sample inlet of the centrifugal machine is formed in the platform plate; the grabbing unit is arranged above the platform plate, the grabbing unit comprises a centrifugal cup grabbing hand, and the centrifugal cup grabbing hand is used for grabbing a centrifugal cup; and the pushing unit is arranged on the platform plate and used for pushing the centrifugal cup in the guide groove to move. According to the method, the sample centrifugation process can be efficiently scheduled.

The application discloses a mechanical force-amplification compression type electrically-controlled packer and a use method thereof, and relates to the field of packers, which comprises a center pipe, a locking block ring, a rubber tube and an electrically-controlled setting and releasing mechanism which are sequentially arranged on the center pipe from top to bottom; the electrically-controlled setting and releasing mechanism comprises a linear driver and a gear and rack auxiliary force-amplification component, the output end of the linear driver is connected with the input end of the gear and rack auxiliary force-amplification component, and the output end of the gear and rack auxiliary force-amplification component is in contact with the rubber tube. The application adopts a mechanical transmission mode to realize the setting and releasing of the electrically-controlled packer, and the setting and releasing only needs to control the linear driver to push out and retract, so that the control mode is simple and reliable.

The invention discloses a stability control method and system for inhibiting repeated voltage ride through of a new energy station, and relates to the field of power grid safety and stability control. Calculating the static stability limit of the system in real time according to the collected data; when a tripping event occurs in the line, calculating the switching amount based on the static stability limit of the system; and performing output removal on the new energy station according to the required removal amount. The static stability limit of the system is automatically calculated through line parameters, a stability control measure of active oscillation suppression is adopted based on fault driving, a generator tripping measure considering fairness and a control effect is adopted according to new energy output, and the control method is simple and reliable, can be widely applied to a new energy centralized grid-connected area, and has wide application prospects. And reliable and stable operation of the new energy centralized grid-connected regional power grid is ensured.

The utility model relates to a direct-drive piston type compression device. The direct-drive piston type compression device comprises a power assembly and a compression assembly. The power assembly comprises a power mechanism and an output shaft. The power mechanism is used for driving the output shaft to rotate around the axis. The compression assembly comprises a reciprocating body, a rolling piece, a piston and a cylinder body, the piston is arranged in the cylinder body, the rolling piece is embedded in the reciprocating body, and the reciprocating body is connected with the piston. The two ends of the output shaft are respectively connected with a shaft head, and are respectively linked with a reciprocating body through the shaft heads; wherein a guide groove is formed in the circumferential surface of the shaft head, the rolling piece located on the corresponding side is clamped in the guide groove, and the track of the guide groove is configured in the mode that when the shaft head rotates to enable the rolling piece to move along the guide groove, the reciprocating body drives the piston to conduct reciprocating compression in the cylinder body. According to the scheme, the control mode is simple and reliable, and the driving efficiency of the piston is effectively improved. In addition, the characteristic that the output shaft has two-end output is utilized, so that the design of simultaneous compression of double cylinders and double pistons is achieved, and the working efficiency is improved.

The utility model belongs to circuit switch technical field discloses a kind of mechanical holding contactors, including sealed casing, static contact, moving contact, driving mechanism and mechanical holding assembly, mechanical holding assembly is located between driving mechanism and moving contact, driving mechanism can drive mechanical holding assembly from separation holding position switch to suction holding position when moving upward, moving contact and static contact contact suction, or from suction holding position switch to separation holding position, moving contact and static contact separate, after driving mechanism moves downward, mechanical holding assembly is kept in current position.The utility model position switching of mechanical holding assembly is driven and controlled by the movement of driving mechanism, it is beneficial to improve the switching reliability and switching efficiency of mechanical holding assembly, driving mechanism moves downward again after moving contact and static contact stable contact work, mechanical holding assembly is kept in current position, realize the mechanical holding of the state of mechanical holding contactor, with energy-saving and anti-vibration effect, and control mode is simple and reliable.

The invention relates to a fan abnormity monitoring system for a vehicle bench test. The fan abnormity monitoring system comprises a pressure difference sensor, a monitoring device and a fan controller. The differential pressure sensor is in signal connection with the monitoring device, and the monitoring device is in signal connection with the fan controller. The pressure difference sensor connecting gas circuit is divided into a high-pressure end and a low-pressure end, the high-pressure end of the pressure difference sensor is connected to the air opening of the fan, and the low-pressure end of the pressure difference sensor is connected to the atmosphere. The differential pressure sensor converts the differential pressure generated at the two ends into an electric signal, and the differential pressure signal is transmitted to a monitoring device in real time through a communication line based on the CAN bus technology. And the monitoring device stores the pressure difference data and continuously performs outlier data verification so as to judge whether the state of the fan is abnormal or not, when the state of the fan is judged to be abnormal, the monitoring device sends a shutdown signal to the fan controller, and the fan controller controls the fan to stop. The monitoring system can realize automatic judgment of fan abnormity and identify potential abnormal conditions of the fan at the first time.