39results about How to "Achieve continuous motion" patented technology

The invention relates to an apparatus having at least one tubular piezo element for the electromechanical positioning of a rotor on the inside of the piezo element. Said apparatus is characterized by at least one elastic friction means for applying a normal force onto the rotor, said friction means being connected to the piezo element. A method for controlling the apparatus is disclosed.

The invention discloses a satellite thrust eccentric moment control device and method. The device comprises: a base plate, a controller, a mass block, a driving unit in a first direction, a driving unit in a second direction, and an angular velocity measurement unit; a controller, a mass block, and a mass block. The first-direction driving unit and the second-direction driving unit are arranged on the bottom plate, and the mass moves in the first direction and / or the second direction driven by the first-direction driving unit and / or the second-direction driving unit. The angular velocity measurement unit is used to measure the angular velocity parameters of the satellite and send the angular velocity parameters to the controller; the controller is used to control the action of the first direction drive unit and / or the second direction drive unit according to the angular velocity parameters. The satellite thrust eccentric moment control device and method of the present invention change the position of the center of mass by driving the mass block to move, so that the thrust vector moment passes through the center of mass, eliminates the eccentric moment, and reduces the influence of the propulsion system on the attitude of the satellite. The algorithm structure is simple, and the controller has high reliability.

The invention discloses a sensor-carrying device for plane guided wave online detection of the defects of a base plate of a vertical-type metal storage tank, which relates to the technical fields of supersonic wave measurement and pipeline systems. The sensor-carrying device comprises an outer frame, a support mechanism, an adsorption mechanism, a movement mechanism, a dismounting mechanism and a sensor fixing mechanism. The support mechanism and the sensor fixing mechanism are fixed at the lower part of the outer frame. The adsorption mechanism, the movement mechanism and the dismounting mechanism are fixed in the outer frame. The support mechanism, the adsorption mechanism and the movement mechanism allows the sensor-carrying device to be balancedly supported on an outer edge plate of the storage tank and to move along the outer edge plate. In detection, the sensor-carrying device is arranged on the outer edge plate (2) of the storage tank and is adsorbed on a storage tank wall plate (3). The sensor-carrying device provided by the invention enables continuous movement of a sensor to be realized, provides the pressure for tightly pressing the sensor on the outer edge plate and improves detection efficiency.

The invention discloses a two-state variable stiffness compliant joint and an operation method thereof. The joint is composed of an input shaft, an output outer ring and a stiffness adjustment mechanism. The input shaft is placed at the center of rotation of the output outer ring and is firmly connected to the input disc; two elastic reeds are installed between the input disc and the output outer ring, one end of each elastic reed is connected to the output outer ring through a bearing, and the other end is connected to the output outer ring. The small bevel gear shaft is fixedly connected, and the small bevel gear shaft is connected to the input plate through bearings; the stiffness adjustment mechanism is fixedly connected to the large bevel gear through the stiffness adjustment motor; the large bevel gear is connected to two small bevel gears that are fixedly connected to the elastic reed engage. The invention has good impact resistance and flexible dynamic characteristics, belongs to active variable stiffness compliant joints, and can be used for joints and drivers of various robots such as bionics, service and rehabilitation.

The invention discloses a pervious-to-light and breathable bin for continuous surface forming 3D printing, and an operation method. The pervious-to-light and breathable bin for continuous surface forming 3D printing comprises a bin body, a bin cover, a gas supply connector, a gas exhaust connector and breathable film. The bin body is of a cylindrical structure with the two ends open, the breathable film is arranged at one end of the bin body in a sealing manner, the bin cover is arranged at the other end of the bin body in a sealing manner, and a sealed space is formed. The gas supply connector and the gas exhaust connector are arranged on the bin cover and both communicate with the sealed space. The gas supply connector is connected with a gas supply system. According to the pervious-to-light and breathable bin for continuous surface forming 3D printing, and the operation method, in the printing process, through control on the gas supply system, a gas atmosphere with pressure intensity of a certain range and a certain gas concentration is formed in the sealed space, a uniform solidification dead zone of tens of micrometers to hundreds of micrometers is formed between a printed part and a gas permeation module by accurately controlling gas in the bin, it is avoided that the printed part adheres to the gas permeation module above, it is achieved that a printing platform continuously moves in the Z axis direction, and the efficiency of photocuring 3D printing is greatly improved.

A main vehicle carrier for a precise instrument comprises a traction vehicle head (1) and a semitrailer body (2), wherein the semitrailer (2) is formed by a main vehicle carrier body containing an air suspension system having a damping air sac (8), a damping platform (3) containing a damping air sac (8) and mounted on the semitrailer body (2) and a traction pinboard device (7) arranged on a traction part between the traction vehicle head (1) and the semitrailer body (2) and containing a damping air sac (8); three-grade damping is conducted via the damping platform (3), the traction pinboard device (7) and the damping air sac (8) in the main vehicle carrier body, so vibration energy produced during driving of the main vehicle carrier body can be absorbed and released by the damping air sac (8); transportation of precise instruments by a motor vehicle can be avoided, so movement stability performance of the main vehicle carrier body can be improved and use precision of the precise instruments can be guaranteed.

The invention discloses a high-precision flexible hinge peristaltic robot, which comprises a forefoot deformation mechanism, a trunk peristalsis mechanism, a hindfoot deformation mechanism and the like. The structure of the forefoot deformation mechanism based on the notch flexible hinge mechanism is similar to that of the hindfoot deformation mechanism. Regarding the torso peristalsis mechanism, the two sets of electromagnets are located at both ends of the forefoot and hindfoot deformation mechanisms, respectively. Through the charging and discharging of the piezoelectric ceramics and the power-on and power-off of the electromagnet, the forefoot deformation mechanism and the hindfoot deformation mechanism work alternately, driving the torso peristalsis mechanism to store and release the deformation energy, and the forefoot deformation mechanism or the hindfoot deformation mechanism is driven by the piezoelectric ceramics. It can realize real-time advance and retreat at the micro-nano level, and can meet the urgent needs of the fields of micro-nano positioning and operation with position change requirements.

The invention belongs to the field of coaxial reflecting telescope regulating mechanisms and particularly relates to a six-degree-of-freedom secondary mirror regulating mechanism based on stacked piezoelectric blocks. The mechanism comprises a bottom plate, regulating units and a top platform used for carrying a secondary mirror, wherein the regulating units are arranged between the bottom plate and the top platform. The mechanism is characterized in that each regulating unit comprises a first combined flexible hinge, a lever amplifying device, a fixed frame, straight beam type flexible hinges, one stacked piezoelectric block and a second combined flexible hinge, wherein one end of the first combined flexible hinge is connected with the top platform, and the other end of the first combined flexible hinge is connected with the lever amplifying device; the lever amplifying device is connected with the fixed frame through the straight beam type flexible hinges; the stacked piezoelectric block is fixedly mounted in the fixed frame; one end of the second combined flexible hinge is connected with the fixed frame, and the other end of the second combined flexible hinge is connected with the bottom plate. By the adoption of the mechanism, the purposes of high-precision positioning of the secondary mirror and quick and active vibration isolation can be achieved.