55results about How to "Avoid out of control situations" patented technology

The invention discloses a satellite attitude control semiphysical simulation system based on a multi-target machine. The satellite attitude control semiphysical simulation system comprises a real-time positioning sub system, an attitude measurement sub system, an attitude control comprehensive processing system, an execution mechanism, a signal conditioning box, a target machine, a working computer and a display system, wherein the real-time positioning sub system acquires real-time position information of a satellite; aiming at different working modes of the satellite during orbit flying, the attitude measurement sub system acquires real-time attitude information of the satellite; the attitude control comprehensive processing system manages all attitude measurement components and the execution mechanism; the target machine performs attitude calculation and torque calculation according to acquired real-time position information and the acquired attitude information and sends control information to the execution mechanism; and the execution mechanism sends actual execution information back to the target machine through the signal conditioning box, acquires the real-time attitude information of the satellite through dynamics and sends the attitude information to the attitude measurement components. The satellite attitude control semiphysical simulation system has high simulation instantaneity, high fault-tolerant capability and high integration degree and has great instructional significance for design and development of satellite attitude control systems.

The invention belongs to the technical field of program control, and discloses a system and a method for efficiently controlling a robot. The system for efficiently controlling the robot specificallycomprises a binocular stereoscopic vision module, a path planning module, a remote operation module, an upper computer control module and a communication module, wherein the binocular stereoscopic vision module is used for acquiring an image by using a camera, and a three-dimensional coordinate of an object point is calculated; the path planning module is used for finding an optimal path which isfree from collision and arrives at the target object position for the robot in a specific environment; the remote operation module is used for improving the operation efficiency and operability of therobot by using a Teleoperation and Remote Control operation mode; the upper computer control module is used for packaging each module in a program through MFC programming; and the communication module is used for completing the two-way information exchange between an upper computer and a rear lower computer. According to the system for efficiently controlling the robot, the robustness and the fault-tolerant processing of the system are effectively improved, and the operability, the operation efficiency and the operation precision degree of the robot can be improved.

A motor control method with high dynamic response speed and high control precision features that the current loop control instead of speed loop control is used, in which the optimized PI control method is used, the depth of throttle is directly relative to the current iq for dynamically detecting the current value, and the difference between the target current and actual current is used as the input of current loop.

The invention discloses a hybrid control based design method of a stability augmentation controller of a quad-rotor unmanned helicopter in the technical field of automatic control. The design method comprises the following steps of: setting a state variable and a state switching parameter of the quad-rotor unmanned helicopter; setting a height switching value, a roll angle switching value, a pitch angle switching value, a roll angle critical value and a pitch angle critical value of the quad-rotor unmanned helicopter; setting a discrete state set and a discrete event set; setting a discrete state transition condition of the quad-rotor unmanned helicopter; and judging the state of the quad-rotor unmanned helicopter and respectively designing a lifting controller, a stability controller, the stability augmentation controller and an out-of-control protection device according to the state of the quad-rotor unmanned helicopter. By using the design method, the stable flight of the unmanned helicopter under a complex condition can be ensured, the out-of-control condition can be effectively avoided, and the flight state of the helicopter can be improved.

The embodiment of the invention provides an isolation component, a redundant architecture of an automatic driving vehicle and a control method of an isolation component, and belongs to the technical field of automatic driving vehicles. The isolation part comprises a processor, a transceiver, a switch module, a switch driving module, a switch state monitoring module and at least one power supply monitoring module; the switch driving module and the switch state monitoring module are connected with the processor and the switch module, the power supply monitoring module is connected with the switch module and the processor, and the transceiver is connected with the processor. The first wiring end and the second wiring end of the switch module are connected in series in the power supply loop, and the switch driving module controls the first wiring end and the second wiring end of the switch module to be connected / disconnected according to a control instruction sent by the processor. The main power supply loop is diagnosed through the isolation part, when the main power supply loop breaks down, the fault loop can be rapidly cut off, the situation that a vehicle is out of control due to power failure is effectively avoided, and the safety of drivers and passengers is guaranteed.

The invention discloses a flight control method and system for an unmanned aerial vehicle. The method comprises the following steps of controlling the flight of the unmanned aerial vehicle according to the presupposed flight control information prestored in the unmanned aerial vehicle; receiving the real-time flight control information sent from the control base station; and adjusting the flight of unmanned aerial vehicle according to the the real-time flight control information. According to the control method and system, the unmanned aerial vehicle is guaranteed to be controllable during the whole flight process. When the communication is normal, the unmanned aerial vehicle can be controlled to adjust its flight status and action in real time according to the control command of the control base station. When the communication link goes wrong, the unmanned aerial vehicle still can be controlled to accomplish a complete set of flight actions according to the presupposed flight control information. The flight control method and system is capable of effectively avoiding the appearance of problem that the unmanned aerial vehicle is uncontrollable due to the failure of the communication link, has better control effects and is suitable to use.

The invention discloses a fast adaptive code rate control method which comprises the following steps of: coding the current image by use of the quantization coefficient obtained by the previous code rate control; storing the intermediate result of the coding; comparing the code rate calculated according to the size of the current coded frame and the size of the previous N-1 frames of the current coded frame with the target code rate; adjusting the quantization coefficient according to the comparison result; if the current coding code rate exceeds the threshold, adjusting the quantization coefficient of the previous N frames, and adjusting the quantization coefficient according to the difference between the coding result of each frame and the target code rate; recoding the N frames by use of the adjusted quantization coefficient by use of the intermediate result of the coded frame before; and calculating the quantization coefficient of the next frame by use of the bit number after the recoding of the N frames and the quantization coefficient when calculating the quantization coefficient in next code rate control. The method disclosed by the invention has the advantages of fast response to the screen change in a complicated scene, fast change of the coding type, fast recovery and stable code rate.

The invention relates to steering wheels of a practice vehicle, in particular to a steering control cutting device for double steering wheels of a practice vehicle. According to the device, when an instructor operates the auxiliary steering wheel in an emergency, a practicing person cannot operate the main steering wheel and step on an accelerator pedal. The device comprises the main steering wheel, a main steering shaft for controlling steering of the practice vehicle on a main driver's seat, the accelerator pedal and an auxiliary brake pedal; a driving shaft for driving the rotation of the main steering shaft is connected to the main steering wheel, and a cutting structure is connected between the driving shaft and the main steering shaft; a hydraulic transmission mechanism is connectedto the lower portion of the auxiliary brake pedal, and an emergency locking mechanism is disposed below the accelerator pedal. When the auxiliary brake pedal is stepped on, the hydraulic transmissionmechanism supplies power to the cutting structure to enable the cutting structure to cut off the connection between the driving shaft and the main steering shaft; when the accelerator pedal is suddenly stepped on, the emergency locking mechanism can prevent the accelerator pedal from being stepped on.

The invention provides a processing method and device of a motor control signal, an electric vehicle, a storage medium and an electronic device. The processing method comprises the steps: preset operation is detected, wherein the preset operation comprises leaving of a rider from the electric vehicle; and the motor control signal input by a speed control part of the electric vehicle is shielded. Through the processing method and device of the motor control signal, the electric vehicle, the storage medium and the electronic device, the problem that in related technologies, when the rider of theelectric vehicle forgets to press the 'P' gear or does not activate the 'P' gear successfully, misoperation of the speed control part is caused, and thus harm to the electric vehicle or the user or the surrounding environment is caused is solved, the situation that the vehicle is out of control is avoided, and thus safety of the electric vehicle or the user or the surrounding environment is ensured.

The invention discloses a control method for vehicle speed limiting. The maximum travel speed of an automobile can be set in advance, and the situation that the automobile is out of control due to sudden accelerator stepping performed by a driver can be avoided by shortening a stroke of an accelerator pedal.

The invention discloses a distributed driving vehicle chassis. The chassis comprises four hub motor driving brake assemblies, a front auxiliary frame assembly, a rear auxiliary frame assembly and a frame assembly, wherein the front auxiliary frame assembly and the rear auxiliary frame assembly are respectively assembled on front and back of the frame assembly, two hub motor driving brake assemblies are respectively assembled on two sides of the front auxiliary frame assembly, and the rest two hub motor driving brake assemblies are respectively assembled on two sides of the rear auxiliary frameassembly. The chassis has the beneficial effects that a whole vehicle controller is adopted and is used for receiving a sensor signal and a vehicle CAN bus signal, the whole vehicle controller further calculates and decides to obtain a target control signal, the whole vehicle controller sends the target control signal to a vehicle CAN bus, and the target control signal is received by other controllers, so that an actuator is further controlled; and two storage batteries are adopted and are used for supplying power for the controllers of the vehicle, the two storage batteries are a front vehicle-mounted 24V battery and a rear vehicle-mounted 24V battery, and the situation that the vehicle loses control caused by failure of storage batteries or the power supply line is effectively avoided.

The invention provides a low-cost timely four-drive transfer case which mainly comprises a gear train, gear axles, an automatic clutch, a signal processor, gear axle rotation speed sensors and the like. The low-cost timely four-drive transfer case has the advantages that rotation speed difference signals are acquired by the two gear axle rotation speed sensors inside the transfer case and can be executed by the signal processor when rotation speed difference reaches a certain rotation speed difference definition value, combination and separation of the automatic clutch can be controlled, and accordingly two-wheel drive and four-wheel drive can be timely and automatically switched over; different control strategies can be set according to different vehicle types, so that frequent combination and separation of the automatic clutch can be prevented when the rotation speed difference fluctuates around a set critical point, the running capacity of integral vehicles can be improved, and the service life of the transfer case can be prolonged; the requirement on inconsistency of rotation speeds of front and rear wheel axles can be met by the transfer case without inter-axle differential mechanisms (in other words, the inter-axle differential mechanisms can be omitted), and sufficient power output and perfect drive mode selection can be automatically guaranteed for the vehicles under different road conditions.

The invention discloses an active electric power steering system capable of changing a steering system transmission ratio, which comprises a steering wheel, a steering column, a steering angle sensor, a torque sensor, a worm gear speed reducer, an assisted motor, a gear rack steering gear, an infinitely variable transmission, a steering angle speed ratio adjustment motor which drives the infinitely variable transmission, a wheel speed sensor, a gyroscope and a steering system controller. The gear ratio control adjustment motor realizes the continuous and smoothly infinite variation of steering transmission ratios at different vehicle speeds, and also can perform steering angle compensation; and in the steering transition of a vehicle, negative steering adjustment is actively performed, and in the steering process, the adjustment motor and the assisted motor perform flexible control and compensate for each other, thereby perfectly combining steering flexibility, convenience and operation stability and improving maneuvering performance and security performance.

The present invention discloses a radioactive source monitoring device and method. The device comprises a radioactive source storage trolley, a server and a mobile terminal. Storage, transportation and usage of radioactive sources are subjected to whole-process and uninterrupted real-time monitoring in 'two-stage' location mode, radioactive source management personnel and usage personnel can monitor the storage position of the trolley (first-stage location) and working states of the radioactive sources (second-stage location) through the mobile terminal in real time to truly achieve whole-process 'two-person' management so as to greatly reduce the risk of out of control of the radioactive sources.

A manual control device of a sun automatic tracking system comprises a timer circuit (1), a manual direction control circuit (2), an auto-manual signal commutation circuit (3), a stepper motor actuator (4), a stepper motor (5) and a driving mechanism (6). The timer circuit (1) generates a pulse control signal of the stepper motor; the direction is selected by the manual direction control circuit (2); the stepper motor actuator (4) provides a driving electric current for the stepper motor (5) according to a received manual control signal and controls the stepper motor (5) to rotate; a rotating shaft of the stepper motor (5) is connected with a speed transforming gear in the driving mechanism (6); the speed transforming gear rotates to drag the driving mechanism to turn, and finally drives a solar photovoltaic array to rotate. When the automatic control function of the automatic tracking system fails, the attitude adjustment can be carried out on the tracking system, or the solar photovoltaic array is flexibly turned in the course of installation and debugging to cause that the solar photovoltaic array reaches an appointed position.

The invention relates to the technical field of electronics, and discloses an alarm clock prompting method and a terminal. The alarm clock prompting method in the invention comprises the steps of: storing the corresponding relationship of M pieces of pre-set operation information and N applications in the terminal in advance, wherein both M and N are natural numbers; when the current time is up tothe pre-set alarm clock time, judging whether the terminal receives the pre-set operation information or not; if the terminal receives the pre-set operation information, obtaining an application corresponding to the pre-set operation information; and opening the obtained application. The invention further provides the terminal comprising a storage unit, a first judgement unit, a second judgementunit, an obtaining unit and a control unit. By means of the implementation mode of the invention, when the terminal executes an alarm clock event, a user can control the terminal to open the corresponding application in a manner of inputting the pre-set operation information; and thus, the function of the terminal while the terminal executes the alarm clock event can be increased.

The invention discloses a 5G base station adjustable antenna and a use method thereof, and relates to the technical field of 5G base stations. The 5G base station adjustable antenna comprises a circumferential rotating mechanism and an angle swinging mechanism; a supporting rod is fixedly installed at the lower end of the circumferential rotating mechanism; a mounting groove is formed in the center of the top of the supporting rod; a first partition plate and a second partition plate fixedly sleeve the inner wall of the mounting groove in the vertical direction; the first partition plate is located below the second partition plate; and the first partition plate and the second partition plate divide the interior of the mounting groove into a plurality of mounting intervals. According to the 5G base station adjustable antenna and the use method thereof of the invention, the overall structure of the angle swing mechanism is driven by the circumferential rotation mechanism to rotate in the circumferential direction, so that a turntable in the angle swing mechanism is driven by the mechanism to rotate, antenna bodies mounted on the surfaces of a plurality of mounting plates are driven to rotate in the circumferential direction, and 360-degree multi-directional adjustment is performed on the antenna bodies, the antenna bodies for the 5G base station can transmit better signals in a higher speed more smoothly.

The invention discloses a switching device, which comprises a power switch circuit which is located between a power end and a power supply output end, and supplies power to the power supply output endwhen turned on; a voltage division circuit which is used for collecting the voltage drop of the power switch circuit; a current-limiting protection circuit which is used for turning off the power switch circuit when turned on; a drive circuit which turns on the power switch circuit in response to a control signal indicating that the power switch circuit is turned on; a delay circuit which is usedfor preventing the current-limiting protection circuit from being turned on before the power switch circuit is turned on, wherein the voltage division circuit is used for turning on the current-limiting protection circuit when the power switch circuit is in an overcurrent state, so that the current-limiting protection circuit turns off the power switch circuit.

The invention relates to a control method of a cooling fan of a theatre. According to the control method, a control platform for the cooling fan of the theatre is provided and comprises the cooling fan, cooling fan control equipment and a Freescale IMX6 processor, and the Freescale IMX6 processor is connected with the cooling fan and the cooling fan control equipment, and cooling control on the cooling fan is realized through the cooling fan control equipment. With the control method, the cooling effect of the theatre can be improved.

The invention relates to a method of accurately controlling a patient in dental surgery; the method comprises: providing and using an oral surgery apparatus to accurately control a patient, with the oral surgery apparatus comprising a dental chair body frame, a power driving device, a state detection device and a communication control interface, wherein the dental chair body frame is used for providing a lying carrier or sitting carrier for the patient to take surgery, the power driving device is positioned below the dental chair body frame and is used for controlling a moving mode of the dental chair body frame, the state detection device is connected with the dental chair body frame and is used for detecting various state parameters of the dental chair body frame, and the communication control interface is connected with the state detection device and is used for receiving the various state parameters and wirelessly sending the various state parameters.

The invention relates to an automobile hand brake and a dustproof cover thereof. The automobile hand brake comprises a hand brake assembly and the dustproof cover, wherein the hand brake assembly comprises a control rod, a hand brake pull rod, a handle, a ratchet, a pawl and a base, the handle is communicated with the control rod, the handle is connected with the base through the ratchet on the control rod, the base is connected with the hand brake pull rod, and the pawl is arranged on the ratchet. The dustproof cover comprises a hand brake sleeve and a base cover, a bonding frame is arrangedon the base cover, the hand brake sleeve is provided with a through hole, and the formed through hole facilitates passing of a control button on the handle. On one hand, the automobile hand brake caneffectively control an automobile, the situation that inflexible control can be effectively avoided in the using process, the service life of the hand brake is prolonged, and labile factors are reduced; on the other hand, the hand brake handle is wrapped through the hand brake sleeve, the hand feeling of holding the hand brake handle is better, the phenomena of hand brake operating obstacles and abnormal sound produced in the running process due to object falling are completely eradicated, and meanwhile the in-automobile hygiene is improved remarkably.

The invention discloses a differential steering control method and system for a new energy vehicle. The control method comprises the steps of obtaining the current steering wheel corner angle and driving speed of the automobile; determining a vehicle driving mode according to the vehicle driving speed; calculating an Ackerman corner in the current driving mode according to the steering wheel corner angle of the vehicle; calculating the deflection front wheel steering angular velocity of the vehicle according to the Ackerman rotation angle; according to the method, the problem that in the prior art, a hub new energy electric vehicle is unstable during electronic differential steering can be solved, the situation that the vehicle is out of control due to the too large steering angle of a high-speed driving steering wheel is effectively avoided, and the whole system is safer.

The invention provides an unmanned aerial vehicle emergency control system capable of avoiding out-of-control crash, and the system comprises a control module, a drive module, a signal detection module, a man-machine interaction module, and an alarm module. The control module comprises an intelligent processing CPU, receives data transmitted by the signal detection module, carries out data processing on the acceleration sensor, and judges whether the data exceed a set value set by the man-machine interaction module. According to the unmanned aerial vehicle emergency control system capable of avoiding out-of-control crash, a third piston rod on the side where an impeller is pushed to stop rotating moves, and through air pressure between the third piston rod and a sliding weight, the sliding weight moves, the gravity center is adjusted, unmanned aerial vehicle equipment is stabilized, and devices and systems in the prior art are improved; through matching between the system and the device, the protection effect of the prior art is improved, the descending speed of the unmanned aerial vehicle equipment is reduced, and the unmanned aerial vehicle equipment is prevented from being abraded due to large initial acceleration.

An overturn-preventing valve comprises a valve body housing, a switch bracket, a pedestal, a straight handle, a return spring and a hex head plug screw, wherein an upper spigot is arranged in the valve body housing; the switch bracket, steel balls and the pedestal are arranged below the upper spigot in sequence; the pedestal comprises a table board and a table body; the table board is arranged at the junction part between the upper cavity and the lower cavity of the valve body; a groove, an oil through hole, an inclined plane and a flow guide groove are formed in the table board; the table board is connected with the straight handle through the table body; the other end of the straight handle is connected with the hex head plug screw after passing through a lower end cap; the return spring is sleeved with the exteriors of the pedestal and the straight handle in parts between the table board and the lower end cap; when a vehicle overturns, an oil inlet pipe and an oil outlet pipe are switched off synchronously through the overturn-preventing valve and a one-way valve; the vehicle returns manually through the pedestal, the straight handle and the return spring. According to the invention, the oil inlet pipeline and the oil outlet pipeline of a fuel oil system can be switched off synchronously to ensure manual return of an overturn oil shut off device, the mounting is convenient, and the safety is higher.

The method is suitable for the technical field of control. The invention provides an indicator light control method and device, terminal equipment and a storage medium. The indicator light control method is applied to the intelligent equipment. The intelligent equipment comprises a main application program and an indicating lamp control program which are independently operated respectively, the indicator light control method comprises the step of executing indicator light control through the indicator light control program; obtaining an indicator light configuration file, the indicator light configuration file comprising indicator light configuration information, and the indicator light configuration information being information correspondingly written into the indicator light configuration file according to a target mode obtained after mode state conversion after mode state conversion is detected by the main application program; and controlling the on-off action of the indicator lampaccording to the indicator lamp configuration information of the indicator lamp configuration file. The embodiment of the invention can improve the efficiency and accuracy of indicating lamp control.

The invention relates to an automobile hand brake control mechanism which comprises a housing. A stay rope is arranged at one end of the housing, a motor is arranged at the other end of the housing, aclutch, a speed reducing gear and a stay rope balancer are arranged in the housing, a threaded shaft is arranged between the speed reducing gear and the stay rope balancer, and the threaded shaft isconnected with a nut shaft through a bolt. The automobile hand brake control mechanism is simple in structure, reasonable in design, convenient to use and capable of effectively controlling an automobile hand brake, effectively avoiding the inflexible control in the using process, prolonging the service life of the hand brake and reducing labile factors.