40results about How to "High drive reliability" patented technology

The invention discloses a rope drive device with a reciprocating wire arrangement function. The rope drive device comprises a backup motor gearbox, a rope roller reducer, a winding roller, a reciprocating screw mechanism and an arrangement guide wheel set. A driving motor is connected with an output shaft of a backup motor and an input shaft of a planetary reducer through the backup motor gearbox, so that both the driving motor and the backup motor can drive the motor gearbox to move. The rope roller reducer transmits rotation of an output shaft of the planetary reducer to the winding roller according to a specified speed ratio, and a large torque is obtained. The winding roller is mounted at an output shaft of the rope roller reducer; a drive rope is wound on and unwound from the winding roller. A reciprocating screw of the reciprocating screw mechanism is connected with the winding roller through a gear and drives a nut slider mounted on the reciprocating screw, to reciprocate. The arrangement guide wheel set is fixedly connected with the screw slider and reciprocates with the screw slider to guide the drive rope being tightly wound on the winding roller in a reciprocating manner. The rope drive device allows winding and unwinding of the rope and allows the rope to be regularly and tightly wound.

Provided are a light controlling apparatus and a method of fabricating the same. The light controlling apparatus comprises: a first electrode unit and a second electrode unit facing each other; a liquid crystal unit between the first electrode unit and the second electrode unit, the liquid crystal unit including: a liquid crystal; a network having a first polymer polymerized from a first monomer having a similar shape as the liquid crystal and a second polymer polymerized from a second monomer having a shape different from the first monomer; and a wall having the first polymer and the second polymer.

A motor actuator may include a motor, a cam driven by the motor, switch contact pieces operated by the cam, a housing case which accommodates at least the cam, the switch contact pieces, and connection terminals attached to the housing case for connecting an external power supply to the motor. The cam is formed with a step part for operating the switch contact pieces and the switch contact pieces are structured as a position sensor. The connection terminals may include a first switch terminal, a second switch terminal, a first motor terminal, and a second motor terminal. The housing case is formed with at least three cut-out portions so that the first switch terminal, the first motor terminal and the second switch terminal are disposed in this order.

The invention discloses an air conditioning indoor unit and an air conditioner with an air conditioning indoor unit. The air conditioning indoor unit comprises a shell body, which is provided with an air supply opening and an air returning opening; an air guide ring, which is arranged at the air supply opening for adjusting the air supply direction; a driving component, which is connected with the air guide ring, and drives the air guide ring to crossly sway and/or vertically sway; an indoor heat exchanger, which is arranged in the shell body; a blower component, which is arranged in the shell body. The air conditioning indoor unit can greatly increase the air supply scale thereof by arranging the air guide ring which can sway along cross and vertical directions, and air flow can be blown to any zone in front of the shell body, and thereby the dead corner of the air supply in the room is effectively solved, the comfort level of the air conditioning indoor unit is added, time from the indoor temperature to the preset temperature is shortened, and energy consumption of the air conditioning indoor unit is reduced.

The invention discloses a drive protection circuit for a power switch transistor, an integrated circuit, an IPM module and an air conditioner. The drive protection circuit for the power switch transistor comprises a signal input end, a first protection circuit, a signal output end, a voltage division circuit, a switch and a gating control circuit. The gating control circuit is used for controlling the switch to be switched on/switched off when it is detected that a voltage of a drive signal input by the signal input end is greater than a preset voltage value, thereby reducing the voltage of the drive signal output by the signal output through the voltage division circuit. According to the drive protection circuit of the power switch transistor, a mode of actively controlling a drive voltage is employed; and a first protection circuit is flexibly controlled to be connected with/separated away from the signal output end, so the drive signal output to a controlled end of the power switch transistor does not exceed an allowed drive voltage circuit; and the drive reliability for a wide band gap material power switch transistor is improved.

The invention belongs to the technical field of nuclear power station main steam systems, and provides a nuclear power plant quick-closing electromagnetic valve control circuit and a main steam system. The nuclear power plant quick-closing electromagnetic valve control circuit comprises a first electromagnetic valve control circuit and a second electromagnetic valve control circuit which are in redundant design, wherein the first electromagnetic valve control circuit comprises a first relay, a second relay, a third relay, a first self-holding loop, a second self-holding loop and a first quick-closing relay circuit; the first relay and the second relay are changed into normally open contacts which are connected in series to control the third relay, namely a conduction relay; and normally open contacts sent to the self-holding loops by the third relay are changed into normally closed contacts. According to the nuclear power plant quick-closing electromagnetic valve control circuit, the same logic function as the original design is achieved, the third relay is changed from a normally-excited state to a normally-demagnetized state in the power operation period, the fault that a main steam isolation valve is closed due to excitation of A-column quick-closing electromagnetic valves caused by a single fault of the third relay can be effectively avoided, and the driving reliability ofthe main steam isolation valve is improved.

The present invention provides a lens module and camera module including the same. The lens module comprises: a lens barrel with a fixed lens; a driving unit arranged in the lens barrel and supporting the mobile lens in the separation mode in the optical axial direction of the mobile lens and the fixed lens; and a pressure member combined to the driving unit to allow the driving unit to deform in the mode of mobile lens moves along the optical axial direction.

The invention relates to a novel efficient piezoelectric rotation precision driving platform based on an asymmetric triangular arc type flexible hinge mechanism. The novel efficient piezoelectric rotation precision driving platform is composed of two sets of piezoelectric stacks, two sets of asymmetric triangular arc type flexible hinge mechanisms, a rotor, a pre-tightening screw, a pre-tighteningwedge block and a base. Each piezoelectric stack can be extended and recovered under the driving of a voltage signal; the two groups of asymmetric triangular arc type flexible hinge mechanisms can realize parasitic inertial motion; the pre-tightening screw and the pre-tightening wedge block adjust the initial pre-tightening force between the asymmetric triangular arc type flexible hinge mechanismand the rotor. The base plays a role in supporting. According to the invention, the two piezoelectric stacks are alternately driven under the control of a voltage time sequence, so that the rotor rollback phenomenon can be eliminated, and the output performance of the platform is improved. The platform can drive the rotor to achieve efficient rotary motion, and can be applied to the technical fields of precision and ultra-precision machining, micro electro mechanical systems, micro operation robots, large-scale integrated circuit manufacturing and biology.

The invention relates to a rotary piezoelectric driving device based on an asymmetric triangular hinge mechanism. The device consists of a piezoelectric stack, the asymmetric triangular hinge mechanism, a rotor, a pre-tightening screw, a pre-tightening wedge and a base. The piezoelectric stack can be elongated and recovered under the drive of a voltage signal. The asymmetric triangular hinge mechanism can realize parasitic inertia motion. The pre-tightening screw and the pre-tightening wedge adjust the initial pre-tightening force between the asymmetric triangular hinge mechanism and the rotor. The base acts as a support. The main output direction of the piezoelectric stack is on a straight line with the rotation center of the rotor so that the rigidity of the main output direction of thepiezoelectric stack can be fully utilized. The asymmetric triangular hinge mechanism has a simple structure and good stiffness output performance and can bear high load and greatly improves the outputload of the driving device and can realize the rotating stepping movement of the rotor. The device can be applied to the fields of precision ultra-precision machining, micro-electromechanical systems, micro-operation robots, large-scale integrated circuit manufacturing and biotechnology.

The invention discloses a damping type uncoiler. The damping type uncoiler comprises a supporting base, a bearing supporting base is arranged on the supporting base, an uncoiler head is fixed to the bearing supporting base through a rotating bearing supporting system, an expanding type clamping jaw system is arranged on the uncoiler head, a driving plate is arranged on the back face of the uncoiler head, the driving plate and the uncoiler head are tightly connected and rotate synchronously, the driving plate is provided with a driving surface, the driving surface is a steel round surface, a driving motor is arranged on the bearing supporting base, a driving head is arranged on an output shaft of the driving motor, the driving head matches with the driving surface, the driving head is a rubber cylindrical head, is tightly pressed on the driving surface and drives the driving plate to rotate through friction force, and then the whole uncoiler head is driven to rotate. The damping type uncoiler is simple in structure, capable of providing driving force and damping force at the same time and good in using effect.

The invention discloses a cross detection system of motor rotor position. The cross detection system of motor rotor position is characterized in that a power supply input terminal of a motor is connected with a power supply through an inverter; the motor includes a support, a rotor and a stator; a motor controller controls the output parameters of the motor; a rotary transformer is fixed on the motor; the rotary transformer outputs an induction signal to a selection decoder; the selection decoder outputs a rotor position signal to the motor controller; a high frequency injection signal-generator respectively sends a signal to each phase of the input terminal of the inverter; a high frequency signal feedback detector is connected with each phase of the output terminal of the inverter, and separates a feedback signal from an injection signal; and the high frequency signal feedback detector outputs the rotor position signal to the motor controller. The cross detection system of motor rotor position has the advantages of being able to improve the motor driving reliability by performing cross detection on double path of rotor positions, and providing a fault driving mode so as to avoidthe situation that the electric vehicle needs a trailer because the rotary transformer fails.

The invention discloses a resonance gate driving circuit with crosstalk suppression and a driving method thereof. The driving circuit comprises a digital controller circuit, a power supply circuit for supplying power to each electric circuit in the driving circuit, a crosstalk suppression circuit for suppressing bridge arm crosstalk of a SiC device, and a negative voltage generation circuit for providing negative voltage required when the SiC device is turned off, wherein the digital controller circuit generates pulse width modulation waves meeting the time sequence of the driving circuit, the signal output end of the digital controller circuit is connected with a digital isolation circuit, the signal output end of the digital isolation circuit is connected with an amplification circuit, and a resonance circuit used for charging and discharging the gate capacitor of the SiC device is connected between the amplification circuit and the SiC device. According to the invention, the resonance gate driving circuitis reasonable in design, convenient to implement, capable of being effectively applied to high-frequency driving of the SiC device, capable of effectively reducing power loss and effectively inhibiting bridge arm crosstalk by combining the driving method of resonance driving and crosstalk inhibition, high in driving reliability, remarkable in effect and convenient to popularize.

The invention provides a three-dimensional circulating conveying line type dense container system, and belongs to the technical field of space intelligent storage. The problems that an existing container system is low in volume loading rate, large in working space requirement, complex in driving process and low in working efficiency are solved. The system comprises a material conversion mechanism, the material conversion mechanism comprises a loading platform, a mechanical claw mechanism, a material circulation track system and a driving screw mechanism, and the loading platform comprises a plurality of movable loading platforms, a plurality of fixed loading platforms and a no-load platform. The multiple movable loading platforms and the no-load platform are evenly distributed on the outer ring of the material circulation track system, the multiple fixed loading platforms are evenly distributed on the inner ring of the material circulation track system, the driving screw mechanism is installed on one side of the material circulation track system, and the mechanical claw mechanism is installed on the other side of the material circulation track system. And the driving screw mechanism is in driving connection with the movable loading platform and the no-load platform. The system is mainly used for space intelligent storage.