226results about How to "Simple control principle" patented technology

The invention discloses a multi-axle steering track follow closed-loop control method for a rubber wheel low-floor intelligent rail train. The multi-axle steering track follow closed-loop control method comprises the steps that firstly, according to a first wheel turn angle delta 1, input by a driver, of a first axle, the rotating angle of a second axle is controlled, and the track of the second axle is superposed with that of the first axle; secondly, the track of a third axle is made to be on the same circular arc with the traction of the second axle and the tract of the first axle to ensure superposition of the tracks by controlling an included angle phi of hinged points, wherein the hinged points are formed between two sections of carriages. The multi-axle steering track follow closed-loop control method has the advantages of being good in control effect, high in stability and the like.

The invention discloses a robot for lower-limb rehabilitation training. The robot comprises a control panel, a case body assembly as well as a drive part assembly, a drive arm assembly, a driven arm assembly, an ankle joint assembly and a shank assembly which are sequentially connected, wherein the drive part assembly comprises a hip joint motor and a speed reducer and is used for driving the drive arm assembly to control the hip joint to move; the drive arm assembly comprises a drive arm, one end of the drive arm is connected with an output shaft of the speed reducer, and the other end of the drive arm is rotationally connected with the driven arm assembly; a driven arm assembly body I used for driving the driven arm assembly to control the knee joint to move, a driven arm assembly body II used for driving the ankle joint assembly to control the ankle joint to stretch or bend and a driven arm assembly body III used for driving the shank assembly to control the shank to move are arranged in the driven arm assembly. The robot for lower-limb rehabilitation training is used for rehabilitation training on the range of motions, coordination of joints and the like, is easy to operate and suitable for wide occasions and can be used for training in different modes according to different rehabilitation stages, and the control principle is simple.

The invention relates to a large-scale open channel water level automatic control method based on storage capacity dynamic regulation. The method comprises the steps of determining a feed-forward flow regulating value; determining whether the feed-forward flow regulating value needs to be subjected to feedback correction or not; calculating a feedback correction value of a feed-forward control flow; calculating a flow regulation target value; calculating the actual opening of a gate; adjusting the opening of the gate. The method disclosed by the invention adopts a feed-forward flow control mode and fully considers the influences of division flow and water level dead areas for controlling a water surface profile of the whole channel section, so that water level fluctuation at local points can be flattened and filtered out, the sensitivity to movement dead areas of the gate is reduced, and accordingly frequent operation for the gate is reduced. Storage capacity compensation conditions required by stable water delivery are conveniently realized, so that the phenomenon of water level overswing is effectively reduced, and stability can be more quickly realized. The control principle is simple and clear and easy to realize and grasp, the influences of various disturbance factors can be effectively avoided, the operation and management cost of an open channel is reduced, the water delivery safety is ensured, and the water delivery efficiency is improved.

The invention includes radar level-sensing device, feeding equipment and control system. The control system includes system for automatic controlling speed of feeding equipment of round roller, and system for automatic controlling extent of opening of assistant gate. The radar level-sensing device is installed in front of the feeding equipment. Measuring direction of the radar level-sensing device is faced to the feed opening of feeding equipment with nine rollers. When height of materiel measured by radar is in trend of linear variation, computer is connected to the radar level-sensing device directly. Using PACTware software to setup control value, the invention carried out real time control through automatic feeding method including longitudinal and lateral feeding methods. Features are: in high real-time, little investment about 1/10 investment of current automatic feeding equipment, and good reliability.

The invention discloses a split-type differential drive device and an omnibearing movable automatic guided vehicle thereof, belonging to the field of an automatic conveying device. The device is provided with an upper rotating disc which is fixed on a vehicle body and is assembled together with a lower rotating disc in a coaxial way by a thrust bearing; the upper rotating disc is provided with an angle sensor and an electromagnetic clutch; and the lower rotating disc is provided with a guide sensor, a vehicle controller and two sets of wheel type moving device, each of which comprises a motor driver, an motor brake, a servo motor, a rotary encoder, a speed reducer and a driving wheel. The device of the invention has the advantages of simple structure, high bearing capacity, accurate control, stable running and the like; and the method fully utilizes the characteristics of the device, is simple in control principle and good in path adaptability, and has higher stability, accuracy and rapidity.

The invention discloses an automatic delivery system for high-rise buildings, which includes a delivery track, a delivery trolley, a delivery box and a control system; the delivery track includes a main rail and an auxiliary rail; the main rail is installed vertically along the wall of the building, There are corresponding attached rails on each floor; there is also a transition rail between the main rail and the attached rail, which is connected by a rail changing device. The rail changing device enables the two ends of the transition rail to be connected/detached from the main rail and the attached rail respectively; The delivery trolley is connected to the delivery track and walks on the delivery track under the action of the driving device; the delivery box is connected to one end of the main track for the courier or the delivery robot to store and pick up the pieces; the control system includes control The center and the main rail part, accessory rail part, track changing part and delivery part connected to it; solve the problem of the last "100 meters" of logistics; facilitate the receiving and dispatching of the receiving personnel and delivery personnel; the high-rise building automatically delivers goods The system has a simple structure and convenient operation, which improves the delivery efficiency of the automatic delivery system for high-rise buildings.

The invention belongs to the technical field of hub machining, and particularly relates to an aluminum alloy hub positioning clamp. The aluminum alloy hub positioning clamp comprises a support and a positioning workbench which is fixed to the top end of the support by threaded connection. A mounting base is fixedly arranged on the inner side of the bottom end of the support, and a servo motor is fixed to the middle of the top end of the mounting base through a motor mounting frame by threaded connection. Sliding grooves used for radial movement of clamping mechanisms are formed in the workbench. The servo motor is used for driving a driving gear to rotate at a high speed, so that four driven gears are driven to rotate. A screw rod is driven to rotate through the rotation of the driven gears, so that a linkage seat on the screw rod is driven to move on the screw rod. The four clamping mechanisms can axially move outwards or inwards on the positioning workbench. A hub placed on the positioning workbench is transversely clamped and positioned, and an air cylinder is used for driving a limiting clamping plate to move downwards, so that the hub is longitudinally clamped and positioned.The clamping stability is high, the clamp can be suitable for clamping and positioning hubs of different sizes, and the application range is wide.

The isolation method for different security level networks comprises: arranging a plurality of electric switches connected to buffer to make networks with different security physical isolate at any time; using two separated but centralized-control data paths to send and receive data; controlling the electric switches and connected buffer by intelligent logic control system to realize the safe isolation and data exchange. This invention has simple structure with low cost, and special fit to network construction for electric government affairs.

The invention discloses a spherical robot capable of jumping, and particularly relates to a spherical robot which can be used in a complex and variable environment, move in all the directions and jump. On a flat ground, the robot can make planar motions, namely the robot can achieve planar rolling and planar turning. When meeting an obstacle, the robot can cross the obstacle by jumping. The outer shape of the robot is spherical, the inner structure is designed to be simple and compact, and the robot can achieve jump. The jumping height can be adjusted according to the actual conditions when the robot jumps, the jumping direction can be adjusted, and the energy utilization rate is high. After jumping, due to the low gravity center and falling-resistant characteristic of the robot, the posture of the robot can be automatically adjusted.

The invention discloses an aircraft which comprises a controller, wherein the controller is uniformly provided with and connected with a lifting propeller 1, a lifting propeller 2, a lifting propeller 3, a lifting propeller 4, a horizontal propeller 1, a horizontal propeller 2, a horizontal propeller 3 and a horizontal propeller 4. The lifting of the aircraft mainly depends on the cooperation of the four lifting propellers, and the intelligent lifting can be realized comprehensively by individual control on each lifting propeller caused by the lifting controller, so that the lifting efficiency of the aircraft is high, and the lifting stability is good. The horizontal motion of the aircraft is achieved mainly through the cooperation of the four horizontal propellers, the operation and control technique requirements on operators are not too high, and compared with the traditional aircraft, the horizontal motion flexibility of the aircraft is improved greatly. Through the individual and cooperative control on the four lifting propellers and the four horizontal propellers of the aircraft, the flying flexibility and flying stability of the aircraft are improved.

The invention discloses a realization method for switching double operating modes of a 3G (3rd Generation) router; and the key of switching the double operating modes of the 3G router is the switching of a data path and a power source. When an adapter is inserted firstly and the 3G router works in a ROUTER mode, a USB (Universal Serial Bus) port is connected again by the user, and the working state of the Router is not affected. When a USB data line is inserted firstly and the 3G router works in a MODEM mode, the power adapter is connected again by the user, and the data connection of a MODEM is uninterrupted. The 3G router designed according to the method is simple in mode control and is convenient to use; when the 3G router is personally used and works in the MODEM mode, a USB port of a user computer is used for supplying power, and an internal wireless router is closed. Only when the 3G router is used by multiple people, the 3G router works in the ROUTER mode, the power adapter is used for supplying power.

The invention discloses a system and a method for automobile safe driving control. A controller is used for detecting the position of an accelerator pedal and calculating the change rate u of the accelerator pedal, and accelerator pedal change rate threshold values A and B are set, wherein A is more than B; when u is less than or equal to A, an automobile is judged to normally drive, and the controller controls the opening degree of a throttle valve based on the position of the accelerator pedal; a linear corresponding relation is formed between the opening degree of the throttle valve and the position of the accelerator pedal, that is a refueling instruction is sent out, and at the moment, the control method is a universal control method of an existing automobile. When u is more than A and less than B, the controller does not send out the refueling instruction, and the opening degree of the throttle valve is not changed; when u is more than or equal to B, the controller drives a brake system to act. According to the system and the method for automobile safe driving control, disclosed by the invention, safe driving is favorably guaranteed, the implementation is easy, and the flexibility is good.

The invention discloses a method for detecting material lack of an ice cream machine. The method comprises: firstly, detecting the rotating speed of a material cylinder of the ice cream machine through a rotating speed sensor; and then emitting a material lack alarm signal and maintaining the alarm state for a period of time when detecting that the rotating speed of the material cylinder is maintained to be less than an alarm threshold for a period of time, if the rotating speed of the material cylinder increases to exceed the alarm threshold after emitting the alarm signal, releasing the alarm state; and if the rotating speed of the material cylinder is maintained to be less than the alarm threshold for a period of time after emitting the alarm signal, forcedly shutting down and emitting the alarm signal again. The invention also discloses the ice cream machine applying the material lack detecting method. The method and the ice cream machine have the following characteristics that: 1, the control principle is simple, automatic detection and alarm functions are realized by setting procedures when the material cylinder is lack of materials, additional hardware is not added, and the cost is not increased; and 2, humanization degree is greatly improved, an alarm lamp continuously shines to remind a user when lacking materials so as to avoid the defect of frequently detecting whether enough materials are in the material cylinder, save manpower and reduce labor intensity.

The invention discloses an intelligent unmanned sowing aerial vehicle. The unmanned aerial vehicle comprises a lifting part and an unmanned aerial vehicle body. The lifting part is a parafoil which pulls the unmanned aerial vehicle through control ropes. A power unit is arranged at the tail of the unmanned aerial vehicle body. An intelligent sowing flight control system is also arranged on the unmanned aerial vehicle body and comprises steering engines and an onboard flight control system arranged at the head of the unmanned aerial vehicle body. A spraying device is also arranged in the middle part of the unmanned aerial vehicle body and comprises a liquid tank arranged in the middle part of the unmanned aerial vehicle body. A spray lance and a booster pump are fixed to the lower part of the unmanned aerial vehicle body; the booster pump pumps out the liquid to be sprayed from the bottom of the liquid tank through a liquid pipe, and conveys the liquid to the spray lance with spray nozzles. Power supply equipment is also arranged on the unmanned aerial vehicle body and provides power for the unmanned aerial vehicle body. The intelligent unmanned sowing aerial vehicle disclosed by the invention has the advantages of high loading capacity, long operating time, high working efficiency, low using and maintaining cost and the like.

The invention relates to a balanced charge control system of a lithium ion storage battery group, which comprises a lower computer and N sets of same control circuits; N is the number of lithium ion storage battery units that the storage battery group comprises; and each control circuit comprises an electronic switch formed by serially connecting two Darlington triodes, and a shunt resistor. A level-type command sent out by the lower computer controls the connection and the disconnection of the shunt resistor. When in normal connection, two groups of bypass circuits are connected simultaneously; and each shunt resistor only bears half of the original load current. If one circuit of electronic switch is in short circuit failure, the balanced control performance is not affected; and if one circuit of electronic switch is in open circuit failure, the group of bypass circuits are disconnected, the other group of bypass circuits can continue to work, and the balanced control performance is not affected. In addition, a bypass control switch is changed from an original relay into the electronic switch, so that inherent defects of low reliability of a mechanical contact in the relay, restricted switching times and the like are overcome, and the system reliability is improved.

The invention provides a control method of a vehicle seat suspension system based on electrorheological fluids. The control method controls the damping of a damper mechanism using the electrorheological fluids, installed in the seat suspension system, and the rigidity of an air spring, and the control method collects seat suspension acceleration signals, air spring air pressure signals, and seat height signals and adjusts the damping of the damping mechanism and the rigidity of the air spring by stopping the processing step by a timer, so as to reduce or even eliminate vibration transmitted tothe seat and improve riding comfort of the seat. In addition, the control method of a vehicle seat suspension system based on electrorheological fluids can also adjust the seat height by stopping theprocessing step by a button to enable the driver to find a suitable driving posture, and also to improve the comfort of the seat.

The invention discloses a building delivery system, which includes a delivery track, a delivery trolley, a delivery box and a control system; the delivery track includes a main rail and an auxiliary rail; the main rail is installed vertically along the wall of the building, and each floor of the building There are corresponding attached rails; there is also a transition rail between the main rail and the attached rail, which is connected by a rail changing device. The rail changing device enables the two ends of the transition rail to be connected/detached from the main rail and the attached rail respectively; delivery The trolley is connected to the delivery track and walks on the delivery track under the action of the driving device; the delivery box is connected to one end of the main track for the courier or delivery robot to deposit and pick up from the trolley; the control system includes the control center and The main rail part, the attached rail part, the track changing part and the delivery part connected to it; it solves the problem of the last "100 meters" of logistics; it is convenient for the receiving personnel and the delivery personnel to receive and receive; the building delivery system has a simple structure, The operation is convenient, and the delivery efficiency of the building delivery system is improved.

The invention discloses an active power factor correction DC power supply circuit and a circuit method thereof, belonging to the technical field of DC power supplies. The active power factor correction DC power supply circuit is composed of a main circuit and a control circuit. The main circuit is composed of a rectifier circuit 1, a power electronic device M1, a freewheeling diode D1, an inductorL1 and a capacitor C1. The power electronic device M1, the freewheeling diode D1, the freewheeling diode D1, the inductor L1 and the capacitor C1 form a BUCK circuit; the control circuit is connectedwith a main circuit, the input end of the BUCK circuit is connected with the direct current side of the rectifier circuit 1, the output end of the BUCK circuit is connected with an external load of apower supply, and the alternating current side of the rectifier circuit 1 is connected with an external single-phase alternating current power supply. An energy balance relationship in a control cycle time is a control criterion. In the control process, the energy magnitude and mutual influence relationship of each link are calculated; in the adjustment process, the quick change of energy is achieved, and the adjustment time is shortened.

The invention provides a cooking utensil. The cooking utensil comprises a cooking system, a delivery control system and a water storage device, wherein the cooking system comprises a washing device and a cooking cavity connected with the washing device, and a first delivering-in hole and a second delivering-in hole are formed in the washing device; the delivery control system communicates with thefirst delivering-in hole and the second delivering-in hole, and is used for conveying food materials to be washed and water used for washing the food materials to the washing device through the firstdelivering-in hole and the second delivering-in hole; the water storage device can store the water for washing the food materials, and a water outlet of the water storage device is connected with thedelivery control system for supplying water for the delivery control system. The cooking utensil provided by the invention comprises the cooking system, the delivery control system and the water storage device, the three parts share out the work and cooperate with one another, the full-automatic function of the cooking utensil is realized, meanwhile, the execution parts for realizing the functions including material conveying, water conveying, water supplying, washing and the like are separated, and thus the control principle is simple.