47results about How to "Control signal stable" patented technology

A motor drive control device for controlling a rotational speed of a motor includes: a motor driver for rotationally driving a motor; a correction amount calculating section for detecting a rotational speed of an output of the motor in accordance with an alternate current signal outputted from an FG sensor and detecting a rotational position of a photoconductive drum, which is rotated by a rotational drive force of the motor, in accordance with a pulse outputted from an encoder; a speed controller for generating a speed control signal corresponding to a total correction amount, which is a sum of a correction amount calculated in the correction amount calculating section based on a rotational speed of the motor and a correction amount calculated based on a rotational position of the photoconductive drum, and outputting the generated speed control signal to the motor driver.

The invention discloses an automatic locking mechanism and an automatic locking filature provided with the same. The automatic locking mechanism mainly comprises an installation bottom plate, a first bearing installation plate, a second bearing installation plate, a push assembly, a compression assembly, a precession assembly and a control component, wherein the first bearing installation plate and the second bearing installation plate are fixedly arranged relative to the installation bottom plate; the push assembly is fixed on the installation bottom plate; the compression assembly is arranged on the first bearing installation plate and the second bearing installation plate; the push assembly is used for driving the compression assembly to move vertically downwards; and the precession assembly comprises a pneumatic screw driver for driving a screw to rotate for locking. In the automatic locking mechanism, the working condition of the pneumatic screw driver is controlled through the control assembly, a synchronous belt wheel and an encoder, so that the controllability of a torque signal of the pneumatic screw driver is realized, and the automatic locking speed is greatly increased.

The invention provides a three-phase voltage type rectifier and a control method thereof. Through providing the high-robustness three-phase voltage type rectifier, a better inhibition effect on both overshooting and steady state error of a system is achieved while the high utilization rate of the voltage of an electric grid is guaranteed. The three-phase voltage type rectifier and the control method thereof have the following advantages: 1, the utilization rate of the electric grid can be increased by 15.4% through adopting an SVPWM (Space Vector Pulse Width Modulation) method compared with that achieved by an ordinary PWM (Pulse Width Modulation) method; 2, a voltage loop adopts a sliding-mode variable structure control (VSC) algorithm to replace the traditional PID (Proportion Integration Differentiation) control algorithm, thus the three-phase voltage type rectifier can rapidly respond to the voltage change of a direct current side; and 3, the voltage loop adopts a PID and VSC combined control method to replace the traditional PID control algorithm, so that the three-phase voltage type rectifier can rapidly respond to current change and can output stable control signals, and then, the overshooting and steady state error of the direct current side are reduced.

The system includes computer, 24 bits A / D acquisition board, high voltage charge / discharge control board as well as time control, timer, display board and control circuit. The said each part is connected through control wiring. The control signal is stable, not affected from influence of topography, interference and weather basically. The information at explosion point is received and recorded at explosion point so as to raise reliability. The said information can be processed in real time in order to carry out quality control effectively. General-purpose GPS makes design and manufacture easier. The invention is applicable to oil, geological and coal exploration. 3D positioning of explosion point is available in the invention, and synchronous accuracy is better than 0.01% so as to extende application area.

The invention relates to a fuzzy sliding mode drive control method for a wheeled mobile robot, which comprises the following steps: based on a vehicle-terrain mechanic theory, the contact characteristic between rigid wheels of the wheeled mobile robot and the terrain is analyzed, and a running dynamic model of the wheeled mobile robot is established, with a wheel slip ratio as a system state variable; based on systematic characteristics, the control input and the control output of a system are determined, and a control model of the wheeled mobile robot is established; and a wheel slip ratio control system of the wheeled mobile robot is established. The method is applied to the drive control on the wheeled mobile robot and has the advantages that the wheel slip ratio of the wheeled mobile robot is controlled at an expected value and the wheel slip degree can be controlled during the robot running process, so as to effectively improve the energy utilization rate of the wheeled mobile robot.

The invention discloses a shift register and a driving method thereof, a gate driving circuit, a display panel and a device. The shift register comprises a first power supply signal input end, a second power supply signal input end, a first signal output end, a first node control module, a first output module, a first voltage stabilizing module and a first clock signal end; the first end of the first voltage stabilizing module is electrically connected with the output end of the first node control module at a first node, the second end of the first voltage stabilizing module is electrically connected with the first control end of the first output module at a second node, and the control end of the first voltage stabilizing module is electrically connected with a first clock signal end; andin the high-frequency display stage, and the first voltage stabilization control module is conducted, and in the low-frequency display stage, the first voltage stabilization control module is conducted or cut off. By additionally arranging the first voltage stabilizing module and the first clock signal end, due to the fact that the leakage current of the first voltage stabilizing module is small,the leakage current of the second node can be reduced in the low-frequency display stage, and stable output of the first signal output end is maintained.

The present invention provides a relay control circuit. The relay control circuit comprises a photoelectric coupler, a first resistor, a second resistor, a third resistor, a triode, a capacitor, a voltage stabilizing diode, a relay coil, a diode, a light emitting diode and a fourth resistor; one input end of the photoelectric coupler is connected with a control signal by the first resistor and the other input end of the photoelectric coupler is grounded; one output end of the photoelectric coupler is connected with a bias voltage and the other output end of the photoelectric coupler is connected with a base of the triode by the second resistor; an emitter of the triode is grounded; the third resistor is connected between the base and the emitter of the triode; a collector of the triode is connected with an anode of the voltage stabilizing diode and one end of the capacitor; a cathode of the voltage stabilizing diode and the other end of the capacitor are connected with one end of the relay coil and an anode of the diode; the other end of the relay coil and a cathode of the diode are connected with a power supply voltage; a cathode of the light emitting diode is connected with the anode of the diode by the fourth resistor; and an anode of the light emitting diode is connected with the cathode of the diode. According to the present invention, power consumption of a relay can be reduced.

A motor drive control device for controlling a rotational speed of a motor includes: a motor driver for rotationally driving a motor; a correction amount calculating section for detecting a rotational speed of an output of the motor in accordance with an alternate current signal outputted from an FG sensor and detecting a rotational position of a photoconductive drum, which is rotated by a rotational drive force of the motor, in accordance with a pulse outputted from an encoder; a speed controller for generating a speed control signal corresponding to a total correction amount, which is a sum of a correction amount calculated in the correction amount calculating section based on a rotational speed of the motor and a correction amount calculated based on a rotational position of the photoconductive drum, and outputting the generated speed control signal to the motor driver.

The invention belongs to the technical field of artificial intelligence navigation and positioning, and particularly relates to a fusion positioning tracking control method based on multi-source imageadaptive weight selection. The method comprises the following steps: constructing a state observer according to an unmanned system kinetic model, a linear transformation state quantity and a pose information nonlinear term; detecting a target in each frame of image of a GPS or Beidou system video, selecting one frame of image as detection input, outputting a group of bounding boxes for the unmanned system of the image, and calculating the central position of the target in the image; and determining an expression and an initial node of the factor graph according to the initial position determined by GPS or Beidou system positioning, and the like. The state observer is constructed by combining state variable linear conversion and the kinetic model; and a region tracking control law is designed by utilizing nonlinear conversion mapping of tracking errors, so that the tracking errors are not converged to zero, control signals are gentler, and driving of an unmanned system under the actualcondition is more facilitated.

The outdated design idea of a closed direct current brushless motor controller driven by a high power MOS tube single module is reformed. Incomplete symmetry and PWM moment drive state and circuit layout irrationality of a direct current brushless motor controller load are discarded. According to the high power direct current brushless motor controller, a chopper function is realized; a single module which is composed of six high power MOS tubes is a unit; according to an actual need, free matching can be carried out, and an open direct current brushless motor controller is formed; separation of a drive module and a control module is realized; and the modules are combined with a control bottom plate through an open structure. Through the control bottom plate, the work mode of each single module and a peripheral circuit is coordinated. The construction of the direct current brushless motor controller is flexible. A module and the bottom plate can be used together. A number of modules and the control bottom plate can be combined for use. The controller can be used by a small power direct current brushless motor, such as the direct current brushless motor controllers of an electric bicycle and an electric tricycle. The controller can be used by a high power direct current brushless motor, such as the direct current brushless motor controller of an electric vehicle.

A target base station transmits a traffic assignment signal a plurality of times to a control station for notifying a traffic amount of downlink data that can be processed by the target base station, after a notified cell change timing in which the mobile station changes a communicating base station.

An optical information apparatus includes a laser which emits a light beam, an objective lens and the like which converge a light beam emitted from the laser on an optical recording medium, spherical aberration correction instrument which is arranged on an optical axis of the light beam which links the laser and the objective lens, and corrects a spherical aberration generated on the optical recording medium. Correction is performed so that outgoing power of the laser changes according to a correction amount by the spherical aberration correction instrument.

The invention relates to a backlight constant brightness control system, which is technically characterized by comprising: a control board, wherein a brightness negative feedback control circuit used for controlling the brightness of an LED to be constant is arranged in the control board; a LED board connected to the control board, wherein the control board controls the light emitting and lighting actions of a plurality of LEDs on the LED board; and a sensor connected to the control board and used for detecting the actual light emitting brightness of the LED board, converting the brightness into an electric signal and inputting the electric signal into the brightness feedback control circuit, wherein the brightness negative feedback control circuit comprises a PID controller, and the PID controller is used for comparing the actual light emitting brightness detected by the sensor with the brightness set by the control board so as to output a stable brightness control signal. The backlight constant brightness control system has the advantage of stabilizing the backlight effect.

The invention provides a semiconductor power switch device and an electronic device and relates to the technical field of microelectronics. The semiconductor power switch device comprises a semiconductor power switch circuit, a level conversion circuit for supplying a control signal to the semiconductor power switch circuit, and a power supply circuit for supplying electric energy to the level conversion circuit. A high potential end of the semiconductor power switch circuit is connected with a high potential pin and a third input end of the power supply circuit. A control end is connected with a first output end of the level conversion circuit. A low potential end is connected with a grounding pin and a second output end of the level conversion circuit. A first input end of the level conversion circuit is connected with a control pin. A second input end is connected with a signal ground pin and the second output end. A power supply end is connected with a third output end of the power supply circuit. Through setting of the level conversion circuit, the stable control signal can be supplied to the semiconductor power switch circuit, thereby solving the problem that in the prior art, the semiconductor power switch circuit is liable to generate malfunction.

When a spherical aberration generated on an optical recording medium is optically corrected, there has been a problem of irradiation power change of an output on an objective lens side due to a change of a signal level detected by a light quantity detector in response to the correction value. An optical information device is provided with a laser (2) for projecting optical beams; an objective lens (9) and the like for focusing the optical beams projected from the laser (2) on an optical recording medium (10); a spherical aberration correcting means (24), which is arranged on an optical axis of the optical beams connecting the laser (2) and the objective lens (9) and corrects a spherical aberration generated on the optical recording medium (10); a polarization beam splitter (5) for splitting the optical beams projected from the laser (2) into a plurality of beams; a light quantity detector (15) which receives one of the optical beams split by the polarization beam splitter (5) and outputs an electric signal corresponding to the receiving light quantity; a laser power control means (21), which controls the projection power of the laser beam source based on the electric signal from the light quantity detector (15); and a controller (23), which performs correction, such as to change the projection power of the laser (2) in response to a correction quantity of the spherical aberration correcting means (24).

The invention provides a switching power supply capacitor charging circuit and a charging method. The switching power supply capacitor charging circuit comprises a first capacitor, a first switch, a second switch and a charging circuit, wherein the first capacitor is suitable for being connected to the power supply end of a switching power supply driving circuit to provide pumping voltage for thedriving circuit; the first end of the first switch is connected to the first end of the first capacitor, and the second end is connected to the output end of the charging circuit; the first end of thesecond switch is connected to the second end of the first capacitor and the second end is connected to the grounding end of the charging circuit; and the charging circuit is configured to charge thefirst capacitor when the first switch and the second switch are closed. Thus, the problems that the existing switching power supply pumping capacitor charging circuit can not charge the pumping capacitor before the switching power supply control circuit is started, and the driving efficiency is low can be solved.

The invention discloses a reinforced multi-solid-state hard disk and a power-up automatic hard burning method thereof. The reinforced multi-solid-state hard disk comprises N solid-state hard disks, adecision circuit, a constant current source circuit, a DC-DC conversion circuit, a burning controller, a decoder, N constant current power switches and a soft destruction switch. The decision circuitis connected with an external burn-out power supply, a hard disk working power supply and a burn-out controller; the DC-DC conversion circuit converts the burning power supply into a working power supply for burning the controller and the decoder; the constant-current source circuit is connected with a burning power supply; two ends of the constant-current power supply switch are respectively connected with the constant-current source output power supply and the corresponding solid-state hard disk; the address end of the decoder is connected with the burnout controller, and the data end of thedecoder is connected with the corresponding constant-current power switch control end; and each constant-current power switch is controlled to be switched on and off by a digital decoding signal output by the decoder, namely whether a power supply output by the constant-current source is allowed to supply power to the corresponding solid-state hard disk for hard burning or not. According to the invention, hard burnout control in a complex electromagnetic environment is more stable.

The invention provides a Huttinger power control system, which comprises a Robicon power control device, an interface control box and a Huttinger power supply. The Robicon power control device is electrically connected with the interface control box; the interface control box is electrically connected with the Huttinger power supply; a current / voltage analog quantity transition module, a relay module and a terminal block are arranged in the interface control box; the power supply transition control system changes a transition parameter of the current / voltage analog quantity transition module, the quantity of the current / voltage analog quantity transition module and the quantity of the relay module to convert different power control signals. Through adoption of the Huttinger power control system, the Robicon power supply is replaced; after isolating signals, a control signal is stable and an abnormal fault is reduced; the investment cost is reduced; the Robicon power supply can be replaced normally; the problems of aging Robicon power supply circuits and frequent faults are solved; faults time of the power supply is reduced; and normal production is guaranteed.

The invention discloses a door lock control method and device, an automobile and a storage medium, and relates to the technical field of automobiles. The method comprises the steps of acquiring a door lock control signal corresponding to a current time as a first door lock control signal, acquiring a plurality of door lock control signals at a preset time interval (namely between the historical moment and the current moment) before the current moment as second door lock control signals, and when the first door lock control signal is the same as the second door lock control signals, and controlling the door lock through the first door lock control signal. The door lock control signal for controlling the door lock from the historical moment to the current moment is stable, and then the door lock is controlled through the door lock control signal, so that accurate control of the vehicle door state is ensured, and misoperation is prevented.

The invention discloses an LED light modulation driving system based on a filtering amplification circuit. The system is characterized by mainly consisting of a driving chip U1, a resistor R5, a resistor R6, a capacitor C4, a diode D1, a diode D3, a field effect transistor power supply circuit, the filtering amplification circuit and a triode driving circuit. The system, by use of a BP3108 integrated chip and through combination with a peripheral circuit, can control resistance change of a sliding rheostat RP, can adjust brightness of an LED light source according to application needs and satisfies customized demands of people, thereby being suitable for promotion and application.

The invention provides a device for implementing a clock and reset control chip working mode, which is used for selecting and switching a universal working mode and / or a DFT working mode; the device comprises a clock PAD-CLOCK input pin and a reset PAD-RESETN control pin, wherein the device further comprises a clock stabilizing circuit module clk-stable, a frequency division module clk-div, a filtering circuit rst-filter, a debugging controller debug-wrappper and a reset stabilizing circuit module rst-stable, the debugging controller debug-wrappper comprises a state corresponding table and ani2c-slv logic unit. Therefore, the device only uses the clock PAD-CLOCK input pin and the reset PAD-RESETN control pin to realize the control chip working mode, filters unnecessary reset pulses on thepremise of stable input clock to obtain expected input, and obtains a stable control signal via the i2c-slv protocol, so that the chip works in a specific mode.

The invention relates to a brushless double closed-loop switched reluctance motor controller with a position sensor, applicable to rail-free electric traffic tools and rail-bound electric traffic tools. A digital logic circuit and a micro control unit (MCU) are integrated in a chip of a system-on-chip, and the hardware circuit of a digital part is designed into software so as to achieve the purpose of simplifying a digital hardware circuit. Separated IGBT power electronic power devices are adopted, various complex electric drive loads are designed in a personalized way, and under-voltage, over-current, overheating and short-circuit protection circuits are designed in a tailored way from an overall perspective of the switched reluctance motor controller. Counter electromotive force produced by a switched reluctance motor (SRM) in operation is better converted by a bootstrap circuit into energy for motor operation, so that the performance of the switched reluctance motor controller is improved from the aspects of safety and stability.

The invention discloses an automatic locking mechanism and an automatic locking filature provided with the same. The automatic locking mechanism mainly comprises an installation bottom plate, a first bearing installation plate, a second bearing installation plate, a push assembly, a compression assembly, a precession assembly and a control component, wherein the first bearing installation plate and the second bearing installation plate are fixedly arranged relative to the installation bottom plate; the push assembly is fixed on the installation bottom plate; the compression assembly is arranged on the first bearing installation plate and the second bearing installation plate; the push assembly is used for driving the compression assembly to move vertically downwards; and the precession assembly comprises a pneumatic screw driver for driving a screw to rotate for locking. In the automatic locking mechanism, the working condition of the pneumatic screw driver is controlled through the control assembly, a synchronous belt wheel and an encoder, so that the controllability of a torque signal of the pneumatic screw driver is realized, and the automatic locking speed is greatly increased.

The invention discloses an LED dimming driving system. The LED dimming driving system is characterized in that the LED dimming driving system is mainly formed by a drive chip U1, a resistor R5, a resistor R6, a capacitor C4, a diode D1, a diode D3, a field effect transistor power supply circuit, an emitter driving enhancing circuit and a triode drive circuit. The LED dimming driving system utilizes a BP3108 integrated chip to combine with the peripheral circuit, and can control resistance change of a slide rheostat RP so as to adjusting the luminance of the LED light source according to usingrequirements to satisfy the individual demand of people, thus being suitable for promotion and application.

A target base station transmits a traffic assignment signal a plurality of times to a control station for notifying a traffic amount of downlink data that can be processed by the target base station, after a notified cell change timing in which the mobile station changes a communicating base station.

The invention discloses a remote wired remote control explosion-proof crawler loader which can be remotely controlled to collect broken stones of mines and tunnels. The remote wired remote control explosion-proof crawler loader comprises a control cabinet, an electronic control cabinet, an electro-hydraulic proportional control system, a monitoring display system, a hydraulic system and a mechanical system, wherein the control cabinet is placed on the ground, and the electronic control cabinet, a sub-display and a driving chair are arranged in the control cabinet. A driver watches a display screen on the ground, and controls an electromagnetic proportional directional valve by shielded cables to operate an oil cylinder and a motor through either an electronic proportional signal or a switching signal which is sent by an electromagnetic proportional control handle, so that the crawler loader is utilized to slag off and load ores and broken stones. The remote wired remote control explosion-proof crawler loader has a double-control mode including remote ground control and field control, signals are controlled stably, a remote control distance can reach up to more than 500m, and the operation is stable, flexible and non-impact; and a monitoring system is wide in omnibearing monitoring visual angle, and monitoring images are stable, so that the driver can safely and comfortably control the remote wired remote control explosion-proof crawler loader in the ground control cabinet, and the crawler loader can work in explosive environments such as a coal mine due to an explosion-proof function.

The invention relates to a variable delivery hydraulic system. The variable delivery hydraulic system comprises a hydraulic oil tank, a liquid control plunger pump, a hydraulic execution piece, a quantitative reversing valve, a reversing valve control device, an electric proportional pressure reducing valve, and a controller. The liquid control plunger pump sucks hydraulic oil from the hydraulic tank and is driven by an engine, the quantitative reversing valve is connected to the hydraulic execution valve and is used for controlling the hydraulic execution piece, the quantitative reversing valve control device is used for controlling the action of a direction reversing valve. A port B of the liquid control plunger pump is simultaneously connected with port P of the direction switching valve and port P of the electric proportional pressure reducing valve, a port A of the electric proportional pressure reducing valve is connected with the hydraulic oil tank through a speed adjusting valve, the port A of the electric proportional pressure reducing valve is connected with a port X of the liquid control plunger pump, the electrically controlled end of the electric proportional pressurereducing valve is connected with the controller, and the controller outputs corresponded electric signals according to the movement range of the reversing valve control device and the rotating speed of the engine after detecting the movement range of the reversing valve control device through a sensing device and obtaining a rotation parameter of the engine so as to enable the electric proportional pressure reducing valve to generate a corresponding pressure difference value. The variable hydraulic system has the advantages that the performance is stable and excellent, the cost low, and the energy-saving effect is good.

A slagging-off machine for underground excavation subway rapid construction comprises a slagging-off device (1), a moving device (2), a driving control room (3), a driving device (4), a dust suppression water spraying device (5), a main machine frame (6), a control device (7) and a material slag conveying device (8). A driving device (4) and a driving control room (3) are connected above the mainframe (6), one side of the driving device (4) is connected with a transmission device (5), the bottom of the main frame (6) is connected with a moving device (2), and the main frame (6) is further connected with a control device (7) and a slag conveying device (8); and a slagging-off device (1) is connected to the main frame (6) at one end of the driving control room (3). The invention belongs tothe intelligent equipment industry, and the slagging-off machine can greatly increase the slagging-off width, greatly improve the working efficiency, improve the stability of the whole machine, achieve the purposes of dust removal, dust suppression and remote control, and has higher practicability and scientificity.

The invention provides a semiconductor power switch device and an electronic device and relates to the technical field of microelectronics. The semiconductor power switch device comprises a semiconductor power switch circuit, a level conversion circuit for supplying a control signal to the semiconductor power switch circuit, and a power supply circuit for supplying electric energy to the level conversion circuit. A high potential end of the semiconductor power switch circuit is connected with a high potential pin and a third input end of the power supply circuit. A control end is connected with a first output end of the level conversion circuit. A low potential end is connected with a grounding pin and a second output end of the level conversion circuit. A first input end of the level conversion circuit is connected with a control pin. A second input end is connected with a signal ground pin and the second output end. A power supply end is connected with a third output end of the power supply circuit. Through setting of the level conversion circuit, the stable control signal can be supplied to the semiconductor power switch circuit, thereby solving the problem that in the prior art, the semiconductor power switch circuit is liable to generate malfunction.