70results about How to "The control process is stable and reliable" patented technology

The invention discloses a fully digital electric variable pitch driver. Peripheral devices of the driver comprise a shaft tank, a variable pitch actuating motor, and an incremental coder on the output shaft of the motor; circuits of the driver comprise two parts, namely a drive circuit and a control circuit; the drive circuit comprises a rectifying circuit, an inverter circuit, a switch power supply circuit, a current and voltage detecting circuit and a relay drive circuit; and the control circuit comprises a DSP module, a CPLD module, a PWM signal drive circuit, a signal conditioning circuit, a switching value acquiring circuit, a coder signal conditioning and acquiring circuit and a communication circuit. The fully digital electric variable pitch driver directly receives a command which is sent by a fan master control and performs three-closed-loop control based on vector change and SVPWM by detecting the current signal of a motor stator and the signal of the coder so as to realize the variable pitch control of the actuating motor; and the control accuracy, the response speed and the reliability of a variable pitch system can be ensured, and then the generating efficiency and the power quality of a whole wind generating set are increased.

An aviation lamination material variable-parameter adaptive hole drilling system is characterized by comprising a, an end executor; b, a force sensor or a current detector; c, an adaptive controller; d, a control unit. An electric spindle transducer of the end executor controls the rotation of an electric spindle. The force sensor or the current detector is arranged on the electric spindle to be used for detecting the axial force or the current of the electric spindle. The adaptive controller communicates with the force sensor or the current detector and the control unit to be used for receiving feedback signals of the force sensor or the current detector to send instructions to the control unit, and the control unit controls the end executor to perform corresponding actions. A drive motor of the end executor comprises an encoder to be used for recognizing and feeding back tool feeding positions, and the adaptive controller communicates with the encoder and the control unit to be used for receiving the feedback signals of the encoder to send instructions to the control unit which controls the end executor to perform corresponding actions.

The invention discloses a test method of metal hydride thermal adsorption and desorption of hydrogen cycle life and a special device thereof. The test device consists of a gas cycling system, a sample chamber heating and cooling system and a computer data collection and control system. The gas cycling system provides a vacuum environment and high-purity hydrogen source to the test system; the sample chamber heating and cooling system rapidly and circularly heats and cools the test sample; and the computer data collection and control system controls a heating and cooling program to run and controls the opening and closing of relevant electromagnetic valve and electric valve and instantly collect the pressure and temperature signal of the system. While completing the test of the cycle of the metal hydride thermal adsorption and desorption of hydrogen, the system also can test the alloy adsorption and desorption hydrogen performance such as PCT curve and dynamics curve and the constant-temperature adsorption and desorption hydrogen service life in situ.

The invention relates to a multi-leaf collimator control system, comprising an industrial control computer, and a main controller connected with the industrial control computer, wherein the main controller is connected with a blade and cabinet controller which controls and connects with a blade and cabinet driver; the blade and cabinet driver is in driving connection with a blade and cabinet motor which is in transmission connection with a blade and a cabinet body; the blade and the cabinet body are provided with position detectors which are connected with the blade and cabinet controller to form a feedback loop; and the driver is connected with the blade and cabinet controller by a current detector to form a feedback loop. The multi-leaf collimator control system is controlled by the industrial control computer, realizes the closed-loop feedback adjustment by using an encoder or a linear scale, and improves running precision of the blade and the cabinet body; moreover, the control process is stable, reliable, convenient and rapid.

The invention discloses an electric control digital end fracturing sliding sleeve comprising a sliding sleeve inner cylinder, a sliding sleeve outer cylinder and a sliding sleeve body. The fracturing sliding sleeve further comprises a driving cylinder body, a pressure-transmitting passageway, a radial passageway, a sealing rod and a displacement sensor. The two ends of the driving cylinder body are connected with a conversion connector and an upper connector correspondingly, an inner cavity of the driving cylinder body communicates with an inner cavity of the sliding sleeve inner cylinder, and the side wall of the driving cylinder body is internally provided with a control assembly, a motor driver and a motor which are sequentially and electrically connected. The pressure-transmitting passageway is formed in the side wall of the conversion connector in the axial direction. The radial passageway is formed in the side wall of the conversion connector and communicates with the pressure-transmitting passageway and the inner cavity of the driving cylinder body. The sealing rod is connected with the motor and used for opening or blocking the pressure-transmitting passageway. The displacement sensor is arranged in the radial passageway, used for detecting the position of the sealing rod and electrically connected with the control assembly. According to the electric control digital end fracturing sliding sleeve, through electric signals, opening of the sliding sleeve is accurately and reliably controlled, and uncertainty caused due to the fact that in the prior art, opening of a sliding sleeve is controlled through pressure is avoided, the success rate of smooth opening of the sliding sleeve is increased, and well cylinder safe pressure test is achieved.

The invention discloses a mine ventilation system partitioning stabilized dynamic monitoring and pre-warning system. The mine ventilation system partitioning stabilized dynamic monitoring and pre-warning system comprises an underground information collection system, an information management analysis system and an alarm system. Ventilation monitoring equipment is mounted at key underground branched monitoring sites, monitored related information is transmitted to a ground monitoring center by the ventilation monitoring equipment, unified management is carried out on data by programs, pre-warning values are set and are set in the programs in combination with underground field measurement and dynamic network calculating result; when underground measured data exceeds the pre-warning values, an alarm is given in ground or underground areas, and the data size is monitored according to monitoring points of each area so as to analyze occurrence reasons and positions of catastrophes. According to the system, underground monitoring areas are reasonably distributed, so that the distribution amount of underground monitoring measuring points is reduced, the control process is simple, practical, safe and reliable, and the whole control system is low in investment and high in operability.

The invention discloses a fully mechanized coal mining face coal cutter automatic height-adjustment control method based on current monitoring. The fully mechanized coal mining face coal cutter automatic height-adjustment control method based on current monitoring includes the steps that firstly, a coal cutter mining work condition monitoring system is built, specifically, the built coal cutter mining work condition monitoring system comprises a sound intensity detection device, a lower monitoring device installed on a coal cutter and an upper monitoring machine arranged in an upper monitoring room; and secondly, automatic height-adjustment control over the coal cutter is carried out, specifically, the coal cutter is used for mining a coal seam to be mined in the work face advancing direction from back to front; and when any mining position of a current work face is mined, the coal cutter mining work condition monitoring system is used for carrying out coal cutter automatic height-adjustment control, and the process is as follows: information detection and synchronous unloading of cutting current, traction current and sound intensity of the coal cutter, cutting work condition diagnosis, coal cutter height-adjustment judgment and cutting height adjustment of the coal cutter. The fully mechanized coal mining face coal cutter automatic height-adjustment control method based on current monitoring is simple in step, reasonable in design, easy and convenient to realize, good in use effect and capable of carrying out accurate control over coal cutter height adjustment automatically in real time.

The invention discloses a method and a device for activating a rechargeable battery. The method comprises the following steps: detecting whether the battery is in an over-discharge locking state or not by a power supply management chip when a charge power supply is connected, and controlling the charge power supply to exert an activation voltage higher than the voltage of the battery onto the battery to activate the battery by the power supply management chip when the battery is in the over-discharge locking state. According to the method and the device for activating the rechargeable battery, a charge tube is controlled to be communicated with a battery tube, and then a high voltage is directly exerted onto the battery, so that the battery is activated; an original charge circuit still serves as a hardware circuit, so that the cost of hardware is not increased; meanwhile, the control process is simple, flexible and reliable. According to the method and the device for activating the rechargeable battery, whether the battery is in the over-discharge locking state or not can be detected automatically, and the battery can be activated only by communicating the charge tube and the battery tube and exerting the high-voltage power supply onto two ends of the battery in such a case that the charge power supply is connected when the battery is in the over-discharge locking state and cannot be charged.

The invention discloses a coal cutter height-adjustment remote control method based on virtual reality. The coal cutter height-adjustment remote control method based on virtual reality includes the steps that firstly, a coal cutter mining work condition monitoring system is built, specifically, the built coal cutter mining work condition monitoring system comprises a sound intensity detection device, a lower monitoring device and an upper monitoring machine; secondly, a three-dimensional model is built; and thirdly, synchronous simulation of coal seam mining and the mining process is carried out, specifically, a coal cutter is used for mining a coal seam to be mined in the work face advancing direction from back to front; and when any mining position of a current work face is mined, the process is as follows: information detection and synchronous unloading of actual mining work conditions of the coal cutter, cutting work condition diagnosis, coal cutter height-adjustment judgment, cutting height adjustment of the coal cutter and synchronous simulation of the mining work conditions of the coal cutter. The coal cutter height-adjustment remote control method based on virtual reality is simple in step, reasonable in design, easy and convenient to realize, good in use effect and capable of carrying out remote control over coal cutter height adjustment automatically in real time and synchronous simulation of the mining work conditions of the coal cutter.

The invention provides a control method and control device for an electric surgery suture nail installing instrument. The electric surgery suture nail installing instrument comprises a general handle and end effectors, wherein the general handle can be used in cooperation with the different end effectors of the surgery suture nail installing instrument. The method includes the steps that in the self-inspection step,partial jaw closing operation and suture nail striking operation are carried out, and the electric surgery suture nail installing instrument returns to an original position; in the step of detecting types of the end effectors,the types of the end effectors are detected; in the closing step,the jaw is closed and the tissue is clamped in the jaw; in the striking step,a suture nail is struck; in the return step, the electric surgery suture nail installing instrument returns to the original position. According to the control method and control device for the electric surgery suture nail installing instrument, detecting of the types of the end effectors is carried out after the self-inspection step of the closing and striking, and therefore the control process is more reasonable and reliable.

The invention discloses a robot vision control method based on the rectangle feature. The robot vision control method comprises the steps that taking a rectangle as the visual feature, visual controlis conducted through vertexes, the area and included angles of diagonal lines of the rectangle; according to the deviation between the current coordinates of the vertexes of the rectangle and the expected coordinates, the position deviation of the robot is obtained, according to the deviation between the current area of the rectangle and the expected area, as well as the deviation between the current included angles and the expected included angles of the diagonal lines, the attitude deviation of the robot is obtained, and finally six-degree-of-freedom control of the robot is achieved; and translation motion and rotational motion are decoupled, and the control process is more stable and more reliable. The problem that traditional visual control is prone to being affected by the shape, thetexture, noise, the lighting condition and the like of a target object due to the fact that the simple features such as points, edges and straight lines are extracted is solved.

The invention belongs to the monitoring technology field and particularly relates to a greenhouse monitoring system capable of realizing safer and more reliable monitoring. The greenhouse monitoring system comprises an air temperature sensor, an air humidity sensor, a CO2 concentration sensor, an illumination intensity sensor, a soil temperature sensor, a soil moisture sensor, a CPU, an EM277 module, an EM235 module, a heater, an air humidifier, a CO2 generator and a soil irrigator. The greenhouse monitoring system is characterized in that the EM235 module is respectively connected with the air temperature sensor, the air humidity sensor, the CO2 concentration sensor, the illumination intensity sensor, the soil temperature sensor, the soil moisture sensor and the EM277 module, the EM277 module is connected with the CPU, and the CPU is respectively connected with the heater, the air humidifier, the CO2 generator and the soil irrigator.

Provided are a hydraulic control system and control method of a transmission and an automobile. The hydraulic control system comprises a clutch control device, a synchronizer control device and a hydraulic oil supply device for supplying oil to the clutch control device and the synchronizer control device. Control of two clutches can be achieved by arranging a first pressure magnetic valve, a first clutch actuator, a second pressure magnetic valve and a second clutch actuator in the clutch control device, control of a synchronizer can be achieved by arranging a third pressure magnetic valve, a fourth pressure magnetic valve, a first logic valve, a second logic valve and multiple synchronizer actuators, the structure of the hydraulic control system is simplified, the cost is reduced, and the control process can be more reliable and convenient.

The invention discloses a constrained agent formation control method based on relative distance measurement, and the method does not need any communication between agents in the formation control process, greatly saves the software and hardware cost, and does not need to know any global information for each agent, the method can complete an expected formation shape control task in a short time, has high robustness to an unknown environment, is based on a directed positioning perception topological graph, does not finally generate unexpected regular circular motion even if adjacent agents are inconsistent in measurement of distances, is more accurate and reliable in control process, the minimum turning radius problem, the sideslip problem and the like existing in practical application can be converted into the curvature constraint problem, and the practicability is higher.

High-performance blind window relates to daily articles, comprising a framework and a collection mechanism, a plurality of sequential arranged synchronous-inverting sheets are placed in the framework, the collection mechanism provides power for un-down running of the sheets, characterized in that a rotation shaft is provided on end of each sheet, a sheet inverted locking mechanism and horizontal movement mechanism are provided in the framework, the sheet inverted locking mechanism includes at least inverted locking sleeve barrel relative to the rotation shaft and rotation power device which provides rotation power to the inverted locking sleeve barrel, the horizontal movement mechanism controls horizontal movement of the sheet inverted locking mechanism; the rotation shaft includes top end portion, middle portion and tail-end portion, the top end portion presents a spherical surface or similar meek curved surface, the middle portion can be directly fastened with the inverted locking sleeve barrel, the middle portion presents a polygonal shape, and the tail-end portion presents a cylindrical shape. Advantages of the invention are: reliability is high, structure is simple, and practicability is good.

The invention discloses an invariable frequency one-drive-two air conditioning unit. Two invariable frequency compressors and a fan (10) are arranged in an outdoor unit; a live wire end (8) of the first invariable frequency compressor (7) is connected with a zero line end (9) of the first invariable frequency compressor through a second normal close contact (5) and a first coil (1); the second normal close contact (5) is connected with the fan (10) through a first normal open contact (3); the fan (10) is connected with the zero line end (9) of the first invariable frequency compressor (7) through the other first normal open contact (3); a live wire end (8) of the second invariable frequency compressor (11) is connected with a zero line end (9) of the second invariable frequency compressor through a first normal close contact (2) and a second coil (4); the first normal close contact (2) is connected with the fan (10) through a second normal open contact (6); and the fan (10) is connected with the zero line end (9) of the second invariable frequency compressor (11) through the other second normal open contact (6). According to the invariable frequency one-drive-two air conditioning unit, the two compressors can be interlocked.