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 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 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.

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.

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.