55results about How to "Reduced drive requirements" patented technology

The present invention relates to a method for control of an automatically controlled clutch when setting a vehicle (100) in motion on a running surface, which vehicle (100) comprises a combustion engine for generating driving force intended for transmission to at least one powered wheel, and a throttle control for demanding driving force from said engine, the magnitude of the driving force demanded from the engine being controlled by a driver of the vehicle by means of said throttle control. The method comprises the step, when a first criterion for a representation of the grip of said powered wheels on said running surface is fulfilled, of - opening said automatically controlled clutch if the driver uses said throttle control to reduce the demand for driving force from said engine.

The invention provides a table tennis serving robot, a table tennis serving method and a computer-readable storage medium. The invention configures the incident velocity and angle of the table tennis ball according to the requirements, sets the expected landing point, the expected forward speed and the expected rotational angular velocity of the table tennis ball after the racket hits the ball, and uses the collision model between the table tennis ball and the racket to obtain the angle and / or angle of each joint of the robot Or angular velocity, the robot controls each joint to drive the racket from the current position to the hitting point to complete the serving action. The robot serving of the present invention is more anthropomorphic and intelligent.

The invention discloses an oscilloscope with high-speed ADC (Analog-Digital Conversion) chips, comprising two ADC chips, a sampling clock module and a control processing module, wherein a reset pulse enable control end of the control processing module is connected with data clock reset pins of the two ADC chips which input respective output data and respective data synchronous clocks to the control processing module respectively; and the control processing module is also provided with a sampling clock enable control end which is connected with the sampling clock module and is used for controlling clock output of the sampling clock module. The oscilloscope utilizes the clock enable and reset pulse to lead the synchronous time sequence of ADC to be realized easily and further realize high-speed ADC synchronization.

The invention discloses a drive mechanism for realizing the variable sweep of the helicopter rotor tip by using a shape memory alloy. The invention belongs to the intelligent rotor technology for actively changing the tip of the rotor to improve the aerodynamic characteristics of the rotor. A drive mechanism that utilizes shape memory alloys to achieve sweepback of the helicopter rotor tip is proposed, which can stably drive the tip of the helicopter in a large centrifugal force field and complex aerodynamic environment. The technical solution of the present invention is: the drive mechanism includes a fixed assembly, an actuating plate and a pair of linear drive assemblies, the fixed assembly is fixedly connected to the paddle, and the center of the actuating plate is hinged at the center of the fixed assembly facing the paddle On the pointed side, a pair of linear drive assemblies are connected to the fixed assembly, so that the actuating plate can rotate under the drive of the pair of linear drive assemblies. By changing the loading current of the shape memory alloy wire, the control of the sweep angle of the blade tip can be realized, so that the helicopter rotor can obtain better aerodynamic effects under various flight conditions.

The invention discloses a horizontal opening and closing roof structure. The horizontal opening and closing roof structure comprises a foldable roof bracket. The foldable roof bracket comprises more than two horizontal space shear type mechanisms, more than two longitudinal chain-shape shear type mechanisms and two full-length connecting rods, wherein the two full-length connecting rods are located on a roof frame and slide horizontally. Each horizontal space shear type mechanism is composed of upper chord arches, supports and an inhaul cable. Each support is composed of a plurality of secondshear mode hinge units, telescopic bars and flexible cables. The upper ends of the supports are arranged on cross hinged joints of an upper chord arch first shear type hinge units. The longitudinal chain-shape shear type mechanisms are connected to the upper chord arch and used for adjusting the distance between the two adjacent upper chord arches. Compared with the prior art, the horizontal opening and closing roof structure is simple in unfolding and folding type, convenient to drive and good in stress performance, the horizontal opening and closing roof structure has the advantages of convenient design and construction and the like, so as to well meet the requirements of different functions of a roof opening and closing of different buildings, the horizontal opening and closing roof structure can expanse and contract freely, has large ratio of expansion and contraction, and is specifically suitable for medium and small span buildings.

The invention provides an air conditioner damper structure and installation method, comprising an air conditioner casing, an air conditioner outlet is formed on the air conditioner casing, an arc-shaped guide groove is opened on the inner wall of the air conditioner casing, and the arc-shaped guide groove is formed on the air conditioner casing. There is one on the inner wall on both sides of the length direction, and the air-conditioning shell is provided with a damper baffle for closing or opening the air-conditioning outlet, the damper baffle is made of flexible material, and the damper baffle is arranged in any opposite The two ends of the two arc-shaped guide grooves are respectively embedded in the two arc-shaped guide grooves, and the damper baffle is slidingly matched with the two arc-shaped guide grooves, and the air conditioner casing is also provided with a device for driving the damper baffle to guide along the arc. The drive assembly for the orbital motion of the slot. The air door baffle made of polypropylene sheet is light in weight, easy to install, and simple in structure, and the arc-shaped guide groove guides the movement of the air door baffle, which helps to improve the stability of the air door baffle movement.

The invention discloses a low-power consumption oscillating circuit. The low-power consumption oscillating circuit comprises a start-up circuit, a controlled oscillation circuit, a reference current source circuit and a drive circuit, wherein the reference current source circuit comprises a constant current source and configurable current source group and a confluence circuit; the controlled oscillation circuit comprises multi-stage identical current-controlled inverter circuits arranged in a cascaded manner; the reference current source circuit generates a reference current which is irrelative to the power supply voltage, the temperature and the process; the size of output currents of the reference current source circuit is configured by external digital control signals; by adjusting the reference current output by the reference current source circuit, the control of oscillation frequency of the controlled oscillation circuit can be realized, while the adjusted reference current can be provided for the drive circuit to serve as the reference voltage; and the frequency generated by the controlled oscillating circuit is output by the drive circuit. The low-power consumption oscillating circuit can be flexibly used in wake-up circuits of various wireless transceiver radio frequency chips, and is particularly suitable for low-power consumption occasions where working voltage is wide in changing range, and the low-power circuit for battery power supply is required..

The invention relates to a relay magnetic circuit structure capable of increasing the initial suction balance force, which comprises a magnetizer (1), a coil (2), an iron core (4), an armature (5), a pole piece (6), and a magnetic steel (7), U-shaped pole piece (8) and L-shaped pole piece (9), the magnetic circuit structure is formed by adding an L-shaped pole piece on the side of the magnetic steel to conduct the magnetic field generated by the coil to form a coil auxiliary circuit, and this The magnetic field is opposite to the direction of the magnetic field generated by the magnetic steel, which produces a partial magnetic force offset, so as to meet the conditions of a large static pressure (that is, a large initial magnetic holding force) and at the same time reduce the initial suction force through the instantaneous magnetic force offset by coil excitation. Conditions, thereby reducing the demand for coil driving force for product performance improvement, and solving the problem that the coil design cannot be changed due to limited space, limited weight, and limited power consumption. The present invention has a simple structure and a wide range of applications.

The invention discloses a three-dimensional constant force parallel flexible micro-positioning platform, which includes a main frame and a force input mechanism, a force output mechanism, and a constant force mechanism located in the main frame. The constant force mechanism includes a parallel leaf spring mechanism and a parallel leaf spring mechanism. The X-direction constant force mechanism, Y-direction constant force structure, and Z-direction constant force mechanism are connected separately. The X-direction constant force mechanism, Y-direction constant force mechanism, and Z-direction constant force mechanism are orthogonal to each other. The X-direction constant force mechanism includes The first negative stiffness mechanism and the first leaf spring flexible structure are connected in series, the Y-direction constant force mechanism includes the second negative stiffness mechanism and the second leaf spring flexible structure connected in series, and the Z-direction constant force mechanism includes the third negative stiffness mechanism connected in series. Stiffness mechanism and third leaf spring flexible structure. The invention adopts a parallel structure to realize motion decoupling, so that the positioning platform has three independent degrees of freedom in three-dimensional XYZ directions, and at the same time uses flexible hinge connections to avoid the shortcomings of traditional connections to achieve high-precision positioning.

The invention discloses an extrusion control type three-state switch timer, comprising a timing device for setting timing time, a driving motor for providing power to the timing device, a gear transmission system for conducting the power of the driving motor to the timing device, a micro-switch which is controlled by the timing device to switch on / off current, and a swinging frame for conducting the movement of the timing device to the micro-switch, wherein a pulling button is mounted between the swinging frame and the micro-switch; and the pulling button controls the contact between the swinging frame and a contact of the micro-switch through three different pulling positions, so as to realize three working modes including timing, long switching-on and long switching-off of the timer. According to the extrusion control type three-state switch timer, a transmission part, namely the swinging frame, between the micro-switch and a timing point inserting sheet is controlled by the pulling button, so that the three working states of timing, long switching-on and long switching-off of the timer are realized; and therefore, the application range of the timer is wider and the use is more flexible.

The installation includes input circuit, power conversion circuit, output circuit, feedback circuit, control circuit and boosted circuit. Voltage signal of input circuit through filtering is connected to power conversion circuit to carry our power conversion. Meanwhile, input circuit is connected to the boosted circuit to provide input voltage. With being raised by the boosted circuit, the input voltage is connected to control circuit to provide auxiliary source. Control circuit is connected to power conversion circuit to carry out power conversion. Power conversion circuit connected to output circuit carrying out rectifying and filtering operations outputs converted voltage. Output circuit connected to feedback circuit provides feedback voltage. Feedback circuit connected to control circuit realizes close loop control in order to meet need at low voltage.

The invention discloses a double-layer three-dimensional parking garage. The double-layer three-dimensional parking garage comprises lower parking mechanisms and upper paring mechanisms which are positioned right above the lower parking mechanisms; each upper parking mechanism can rotate around the corresponding lower parking mechanism and integrally translates to the side of the same horizontal plane as that of the lower parking mechanism; each lower parking mechanism comprises a [-shaped machine frame which is fixed to a floor base; a lower vehicle bearing plate is mounted on the upper surface of each machine frame; two-links are respectively mounted at the four corners of each machine frame positioned below the corresponding lower vehicle bearing plate; a driving device which is used for driving each lower vehicle bearing plate to translate is arranged in the middle of a longitudinal beam of the corresponding machine frame; each driving device comprises a mobile driver and a stroke increasing mechanism which is used for shortening the stroke of the mobile driver; each mobile driver is fixed to the middle of the longitudinal beam of the corresponding machine frame; one end of each stroke increasing mechanism is connected with the corresponding mobile driver; the other end of each stroke increasing mechanism is connected with the corresponding lower vehicle bearing plate. The lower parking mechanisms of the double-layer three-dimensional parking garage all adopt rotating pairs and are provided with the stroke increasing mechanisms, so that the translating speed of the lower vehicle bearing plate is greatly improved. The requirement on floor is low when the double-layer three-dimensional parking garage is mounted; the manufacturing cost is low.

The invention discloses a horizontal opening and closing roof structure. The horizontal opening and closing roof structure comprises a foldable roof bracket. The foldable roof bracket comprises more than two horizontal space shear type mechanisms, more than two longitudinal chain-shape shear type mechanisms and two full-length connecting rods, wherein the two full-length connecting rods are located on a roof frame and slide horizontally. Each horizontal space shear type mechanism is composed of upper chord arches, supports and an inhaul cable. Each support is composed of a plurality of secondshear mode hinge units, telescopic bars and flexible cables. The upper ends of the supports are arranged on cross hinged joints of an upper chord arch first shear type hinge units. The longitudinal chain-shape shear type mechanisms are connected to the upper chord arch and used for adjusting the distance between the two adjacent upper chord arches. Compared with the prior art, the horizontal opening and closing roof structure is simple in unfolding and folding type, convenient to drive and good in stress performance, the horizontal opening and closing roof structure has the advantages of convenient design and construction and the like, so as to well meet the requirements of different functions of a roof opening and closing of different buildings, the horizontal opening and closing roof structure can expanse and contract freely, has large ratio of expansion and contraction, and is specifically suitable for medium and small span buildings.

The invention discloses a method and system for assisting steering and driving of heavy trucks based on panoramic images. The relationship between the steering wheel angle of the tractor and the declination angle of the trailer axle is used to calculate α. c Corresponding normal shaft declination angle β α , and then judge β α with beta c are equal, if β α ≠β c , and then judge β α Is it less than β c , if β α less than beta c If it is established, the driver is reminded that the vehicle slides to the inside of the turn, and returns to step S2; if β α less than beta c If it is not established, the flashing vehicle on the screen slides to the outside of the turn, and returns to step S2; if β α =β c , it means that the heavy truck turns normally, and obtains the real-time panoramic bird's-eye view to display the real-time bird's-eye image with the prediction line. The method and system can facilitate the driver to judge in advance whether accidents such as scratches and collisions will occur, so as to adjust the forward path or stop operations in time.

A torque assisting device, a method and a mammary machine are provided. According to an example, the torque assisting device includes a rotating mechanism, a fixing cylinder and an axially elastic force-applying mechanism. The rotating mechanism is provided with a load. An end surface of the fixing cylinder is provided with a motion trajectory having an inclination angle and the fixing cylinder is connected with the force-applying mechanism. The rotating mechanism is abutted on the motion trajectory at one end thereof and rotates about an axis of rotation along the motion trajectory. The inclination angle of the motion trajectory is set according to a torque generated by the gravity of the load. By setting the motion trajectory with an inclination angle and the fixing cylinder, torque associated with rotation angle of the centre of gravity of the load may be output passively, counteracting the torque generated by the load's gravity.