131results about "Electrostatic motors" patented technology

The invention belongs to the technical field of chip heat dissipation, and particularly relates to a chip heat dissipation device based on a thermoelectric sheet driven electrostatic fan. The shell is used for loading the electrostatic motor and is internally provided with a flow guide channel for guiding the airflow direction; one end of the heat dissipation piece is provided with a chip attaching surface which is used for being attached to an external chip; one end of the thermoelectric sheet is connected with one end, deviating from the chip binding surface, of the heat dissipation piece, and the other end of the thermoelectric sheet is exposed in the air; wherein the thermoelectric piece is electrically connected with the electrostatic motor through the boost circuit board and used for outputting high-voltage direct current to the electrostatic motor, and the shell is located on one side outside the heat dissipation piece. The chip heat dissipation device has the advantages that the chip heat dissipation device is flexible and variable in structural layout, the whole device is flatter, the requirement for the space in electronic equipment can be met, the structure and principle are simple, complex components and control circuits are not needed, passive control over the chip temperature can be achieved, and the chip heat dissipation device is efficient, saves energy and is suitable for large-scale popularization and application. No extra energy is consumed, and the heat dissipation efficiency is higher.

The present disclosure, in some embodiments, relates to a MEMS (Microelectromechanical systems) structure. The MEMS structure includes a first comb structure having a first plurality of comb fingers extending outward from a first branch. A second comb structure has a second plurality of comb fingers extending outward from a second branch. The first plurality of comb fingers are laterally interleaved between the second plurality of comb fingers. The first plurality of comb fingers respectively include a weighted core material and one or more peripheral materials. The weighted core material has a larger density than the one or more peripheral materials.

Microelectromechanical systems (MEMS) have found widespread applications across biotechnology, medicine, communications, and consumer electronics. These are typically one-dimensional MEMS (e.g. rotation, linear translation on a single axis) or two-dimensional MEMS (e.g. linear translation in two directions in the plane of the MEMS). It would be beneficial therefore for designers of components, circuits, and systems to exploit MEMS elements that produce both out-of-plane and in-plane motion thereby allowing for novel two-dimensional and three-dimensional MEMS micropositioners.

The invention provides a wireless passive self-powered ubiquitous intelligent sensing system based on vibration energy collection. According to the system, the vibration energy of the rail train is converted into electric energy, self power supply of the sensor and the communication unit is achieved, the multi-mode sensing and wireless data transmission functions are integrated, and limitation of external power supply and complex wiring is avoided. The system can accurately monitor the running state and the key component performance of the train in real time on the premise of not increasing the operation cost and the maintenance burden, and has the advantages of flexible layout, high energy utilization rate, rich perceptual information, low cost, high reliability and the like; and a solid support is provided for the technology upgrading of the rail transit train from limited perception to generalization perception and from single perception to multi-mode perception.

The invention relates to the technical field of micro aircrafts, in particular to an atmospheric potential energy self-sustaining aircraft. Comprising a stator component provided with a positive electrode and a negative electrode which are distributed crosswise in the circumferential direction; a rotor member having a conductive sheet; the conducting strip can obtain charges from the positive electrode or the negative electrode of the stator part, so that the rotor part is driven to rotate; the rotor wing assembly is connected to the rotor component; the positive charge collecting part is electrically connected with the positive electrode and used for collecting positive charges in the atmosphere and supplying the positive charges to the positive electrode; and the grounding part is electrically connected with the negative electrode and is used for grounding the negative electrode. By arranging the positive charge collecting component and the grounding component, the aircraft can directly obtain electric energy from an atmospheric electric field, and the natural potential difference between the high altitude and the ground is used for driving the rotor component to rotate, so that continuous power is provided for the aircraft. The mode does not depend on a traditional storage battery or a solar cell, the problems that an existing micro aircraft is short in endurance time and limited by light conditions are solved, and cross-day and cross-night continuous flight can be achieved.

The embodiment of the invention provides a chip structure, a manufacturing method and a related device, and the chip structure comprises a functional chip; the heat dissipation chip is bonded to the functional chip; the heat dissipation chip comprises a heat dissipation sheet which is of a symmetrical structure; the connecting parts are located at the two ends of the cooling fins and connected with the frame through rotating shafts; the capacitor structure is located on the outer side of the connecting part and used for providing power for movement of the cooling fins; the frame surrounds the cooling fins and the connecting part, and the frame, the cooling fins and the connecting part are arranged at intervals. According to the embodiment of the invention, the heat dissipation problem of the chip can be solved.

The invention discloses a soft electrostatic torsion driving unit and method and a driver, the soft electrostatic torsion driving unit comprises an output part, a torsion deformation structure and a driving base which are connected in sequence, the torsion deformation structure comprises an elastic element and a flexible electrode, and the driving end and the driven end of the flexible electrode are relatively twisted by a set angle; the driven end of the flexible electrode is connected with the output part, and the driving end of the flexible electrode is connected with the driving base; two ends of the elastic element are respectively connected with the driving base and the output part, a conductive layer and an insulating layer are arranged on the driving base, and the active end of the flexible electrode is arranged above the insulating layer; a liquid dielectric output device is arranged in the driving base, an outlet of the liquid dielectric output device is located at the edges of the conducting layer and the insulating layer, and the elastic element is in a pre-tightening state; the invention has the advantages of compact structure, high driving efficiency, high response speed and large torsion angle, and can provide a new technical solution for the design of a complex flexible driving device.

A method of calibrating a resonator having a resonant member that can vibrate in a first mode of vibration, and a calibration electrode that is spaced from a capacitively coupled to the resonant member, the method comprises: applying a polarization voltage to the resonant member and a calibration voltage to the calibration electrode, wherein the polarization voltage is a negative voltage; vibrating the resonant member such that the resonant member vibrates in the first mode of vibration; measuring a frequency parameter of the resonant member; determining if the frequency parameter is in compliance with a predetermined threshold; and if the frequency parameter is not in compliance with the predetermined threshold, adjusting the frequency parameter to be in compliance with the predetermined threshold by adjusting at least one of the polarization voltage and the calibration voltage.

A micro-electromechanical system (MEMS) structure is useful as an actuator for moving an image sensor for optical image stabilization. The MEMS actuator includes one or more micromechanical arm arrays. Each arm array includes a first array of spaced-apart fingers formed from a piezoelectric material, and a second array of spaced-apart fingers formed from an electrically conductive material. The distal ends of the first array of fingers and the distal ends of the second array of fingers are interposed between each other. Micro-springs connect the interposed distal ends of each set of adjacent fingers together. A metal cap is present above the distal ends of the first array of fingers and the distal ends of the second array of fingers. Micro-springs connect the metal cap to the distal end of each finger of the first array of fingers. This structure has increased stability and strength.

A method for manufacturing an optical device includes: a first step of preparing a semiconductor substrate that includes a portion corresponding to a base, a movable unit, and an elastic support portion; a second step of forming a first resist layer in a region corresponding to the base on a surface of a first semiconductor layer which is opposite to an insulating layer; a third step of forming a depression in the first semiconductor layer by etching the first semiconductor layer up to an intermediate portion in a thickness direction using the first resist layer as a mask; a fourth step of forming a second resist layer in a region corresponding to a rib portion on a bottom surface of the depression, a side surface of the depression, and the surface of the first semiconductor layer which is opposite to the insulating layer; and a fifth step of forming the rib portion by etching the first semiconductor layer until reaching the insulating layer using the second resist layer as a mask.

The present invention relates to a microelectromechanical system (10) comprising a drive module (200), the drive module (200) comprising a fixed drive part (210), a movable drive part (220), and and a suspension (230), wherein the movable driving part (220) can move in a first direction (A) relative to the fixed driving part (210) as a result of an electrostatic force causing elastic deformation of the suspension (230), and the movable driving part (220) can move in a second direction (B) opposite to the first direction (A) relative to the fixed driving part (210) as a result of an elastic return force generated by the suspension (230), and the actuator (11) also comprises a stopper (24) which limits the movement of the first movable part (220) in the second direction (B) so that the elastic force generated by the suspension (230) is not canceled out.

A bending transducer includes a deflectable element, a microelectromechanical transducer extending along a centroid fiber of the deflectable element deflecting the deflectable element in a first direction when a first electrical signal is applied, and a second microelectromechanical transducer extending along the centroid fiber deflecting the deflectable element in a second direction opposite to the first direction when a second electrical signal is applied, the centroid fiber being located between sides of the first and second microelectromechanical transducers facing away from each other, and an electrical control configured to vary the first and second electrical signals depending on an input signal such that a change of the first electrical signal and a change of the second electrical signal depends on the electrical input signal, and the phases of the first and second electrical signals are shifted relative to each other. A bending transducer operated as sensor is also presented.

The invention belongs to the technical field of wheeled electric vehicles, and particularly relates to a wheeled electric vehicle based on electrostatic motor driving. A wheel; the electrostatic motors are installed on the two sides of the chassis frame and used for outputting power to the wheels. Wherein a high-pressure generator is mounted on the chassis frame; the electrostatic motor includes: a stator part including a positive electrode and a negative electrode connected to a high voltage generator; the rotor part comprises a conducting strip; and the conducting strip of the rotating part can obtain charges from the positive electrode and the negative electrode of the stator part, so that the rotor part is rotationally driven by the stator part to drive the wheel to rotate. The wheel type electric vehicle has the beneficial effects that compared with a traditional electromagnetic motor, the energy consumption efficiency of the wheel type electric vehicle driven by the electrostatic motor is obviously improved, particularly, the wheel type electric vehicle is more remarkable under the low-speed operation or frequent starting and stopping working condition, the zero heating characteristic under the low-speed or locked-rotor working condition is achieved, and the energy consumption efficiency is improved. And high efficiency can be maintained at a low rotating speed.

The present invention provides a rotary electrostatic adsorption driver, which includes a driver body. The driver body is a cylinder formed by a first outer frame, a second outer frame and a plurality of electrodes. Both ends of the electrodes are inserted into the holes of the first outer frame and the second outer frame and fixed. The number of electrodes is multiple and they are evenly distributed in the circumferential direction between the first outer frame and the second outer frame. A power supply assembly capable of supplying power to the electrodes. The driver body is placed on a supporting plane, and an electrostatic field is generated between the electrodes and the supporting plane. The electrodes are subjected to electrostatic adsorption force, and the driver body generates a rotational motion on the supporting plane under the action of the electrostatic adsorption force. This driver can directly drive the rotational motion by using the torque generated by adsorption, thereby reducing redundant structures.

The present disclosure relates to a system and method that produces thrust without a propellant or any physically moving parts. The disclosed method produces thrust by accelerating electrons between a multilayer capacitive stack and taking advantage of a conductive dampener that makes up a single thrust unit. For example, as power is applied to a first conductive layer separated by a second conductive layer by at least one dielectric layer, the electrons accelerating from the first layer produce a thrust whose direction is determined by the presence of a cover layer. Multiple middle conductive layers with corresponding dielectric layers can provide thrust scalability. Stacked thrust units with a minimum of a calculated distance between said units can also scale the thrust observed. Specialty materials with built in dielectrics such as anodized aluminum can further improve the thrust unit.

An illustrative electrostatic machine includes a shaft that is configured to rotate about an axis, a rotor electrode, and a stator electrode. The rotor electrode and the stator electrode are separated by a gap and form a capacitor. The rotor electrode is fixed to the shaft. The electrostatic machine can also include a housing that is configured to enclose the rotor electrode, the stator electrode, and at least a portion of the shaft. The stator electrode is fixed to the housing. A dielectric fluid fills a void defined by the housing, the rotor electrode, and the stator electrode.

In one or more arrangements, an electrostatic machine is presented that includes a rotor and a stator. The rotor has a first set of terminals configured to receive a first multiphase AC drive voltage (VR) and the stator has a second set of terminals configured to receive a second multiphase AC drive voltage (VS). When VR is applied to the first set of terminals and VS is applied to the second set of terminals, the rotor and the stator generate respective electric fields which, when properly aligned, cause the rotor to produce torque relative to the stator and induce rotational motion when sufficient torque is generated.

The present invention discloses a pedestrian bridge vibration comfort assessment platform that takes into account human-bridge interaction. The platform comprises a self-powered sensing vibration force measurement platform and an analysis and control system. The self-powered sensing vibration force measurement platform includes multiple self-powered sensing force platforms and servo-controlled motors. The self-powered sensing force platforms are densely packed with friction nanogenerator self-powered three-dimensional force measurement blocks. The analysis and control system comprises three modules: data acquisition, feedback control, and data output. The modules collect the three-dimensional pedestrian load on the self-powered sensing vibration force measurement platform in real time, calculate the bridge dynamic response based on a finite element model of the pedestrian bridge, and then feedback-control the vibration state of the self-powered sensing vibration force measurement platform to simulate the actual bridge vibration. Finally, the bridge vibration comfort is assessed based on the dynamic response characteristics of the bridge throughout the loading process. The present invention enables real-time interaction between a computer and the self-powered sensing vibration force measurement platform, reducing sensing energy consumption while obtaining pedestrian bridge vibration comfort assessment results that are closer to reality.

An example electrostatic machine including a rotor stack comprising a plurality of a rotor plates each including a plurality of rotor electrodes positioned on each side of the rotor plate; and at least one rotor via comprising an electrical connection between the plurality of rotor electrodes on a first side of the rotor plate and the plurality of rotor electrodes on a second side of the rotor plate; and a stator stack comprising a plurality of stator plates, each including a plurality of stator electrodes positioned on each side of the stator plate; and at least one stator via comprising an electrical connection between the plurality of stator electrodes on a first side of the stator plate and the plurality of stator electrodes on a second side of the stator plate.

An optical device includes: a base; a movable portion which includes an optical function portion; an elastic support portion which supports the movable portion so that the movable portion is movable along a first direction; a first comb electrode which is provided to the base; and a second comb electrode which includes a plurality of second comb fingers provided to at least one of the movable portion and the elastic support portion. The elastic support portion includes a torsion bar extending along a second direction perpendicular to the first direction and a lever connected to the torsion bar. The second comb electrode is provided to a portion of at least one of the movable portion and the elastic support portion, the portion being located on the optical function portion side with respect to the torsion bar. The first comb finger and the second comb finger which are adjacent to each other face each other in a direction in which the movable portion has higher external force resistance, of the second direction and a third direction perpendicular to the first direction and the second direction.

To provide an electrode pair having a saw-tooth configuration and an artificial muscle including the same.SOLUTION: An electrode pair includes a first electrode and a second electrode. The first electrode and the second electrode each have an outer surface, an inner surface, a first end, a second end, and a lead extending outwardly from the first end. The lead has a first width at the first end. The second end of at least one of the first electrode and the second electrode has a recess that is formed in the second end and that has a first terminal and a second terminal. A second width extends between the first terminal and the second terminal of the recess. The recess is defined by a saw-tooth pattern. When the first electrode is positioned on the second electrode, At least one recess in the first electrode is adjacent to the lead of the other electrode.SELECTED DRAWING: Figure 1

To provide an artificial muscle stack that comprises a plurality of artificial muscle layers.SOLUTION: Each artificial muscle layer includes one or more artificial muscles having a housing with an electrode region and an expandable fluid region, a dielectric fluid housed in the housing, and an electrode pair having first and second electrodes positioned in the electrode region. The first and second electrodes each include two or more tab portions and two or more bridge portions. The two or more bridge portions interconnect adjacent tab portions. At least one of the first and second electrodes includes a central opening positioned between the tab portions and encircling the expandable fluid region. The artificial muscle layers are arranged such that the expandable fluid region of the artificial muscles of each artificial muscle layer overlaps at least one tab portion of one or more artificial muscles of an adjacent artificial muscle layer.SELECTED DRAWING: Figure 1

The invention discloses an electrostatic film motor, a two-degree-of-freedom motor and a mobile processing robot. The electrostatic film motor comprises a top insulating layer, a top cementing layer, a top electrode layer, a substrate layer, a bottom electrode layer, a bottom cementing layer and a bottom insulating layer which are sequentially arranged from top to bottom; the top insulating layer is used for electrically insulating the top electrode layer; the top cementing layer is used for bonding and fixing the top insulating layer and the top electrode layer; the top electrode layer comprises a plurality of electrodes which are arranged in parallel; the substrate layer is used for isolating the top electrode layer from the bottom electrode layer; the bottom electrode layer comprises a multi-phase electrode, and the multi-phase electrode of the bottom electrode layer and the multi-phase electrode of the top electrode layer are orthogonally arranged; the bottom cementing layer is used for bonding and fixing the bottom electrode layer and the bottom insulating layer; the bottom insulating layer electrically isolates the bottom of the electrostatic film motor. The problems that an electrostatic film motor is poor in motion flexibility and low in output force are solved.

An optical device includes a base that includes a main surface, a movable unit that includes an optical function unit, an elastic support unit that supports the movable unit so that the movable unit is movable along a predetermined direction perpendicular to the main surface, a fixed comb electrode that includes a plurality of fixed comb fingers, and a movable comb electrode that includes a plurality of movable comb fingers which are disposed alternately with the plurality of fixed comb fingers. At least one of the movable unit and the elastic support unit includes an electrode support portion that supports the movable comb electrode. The electrode support portion includes a rib portion that is formed so that the thickness of the electrode support portion in the predetermined direction is larger than the thickness of the movable comb fingers in the predetermined direction.

A flexible actuator for curved surfaces and a control method thereof is used for curved surfaces and generates high vibration using a relatively low voltage.

A microelectromechanical (MEMS) device is provided. The MEMS device comprises a substrate and a movable structure flexurally connected to the substrate, capable of moving in relation to the substrate, wherein the movable structure further comprising two or more segments having at least one mechanical connection between said segments to provide structural integrity of the moving structure; and wherein the at least one mechanical connection electrically isolates at least two segments.

An artificial muscle assembly includes initiating actuators and an artificial muscle. The artificial muscle includes a housing including an electrode region and an expandable fluid region, and an electrode pair positioned in the electrode region. The electrode pair includes a first electrode and a second electrode fixed to respective first and second surfaces of the housing. At least one of the first electrode and the second electrode includes a central opening defining the expandable fluid region. The electrode pair is actuatable between a non-actuated state and an actuated state such that actuation from the non-actuated state to the actuated state directs a dielectric fluid into the expandable fluid region. Each initiating actuator is actuatable between a non-actuated state and an actuated state such that actuation from the non-actuated state to the actuated state applies a force against the electrode region of the artificial muscle.

The invention discloses an electrostatic rolling driver based on a dielectric liquid amplification effect, relates to the technical field of electrostatic driving, and solves the problems of complex structure and control strategy, high cost and weak climbing capability of a climbing robot. The device comprises a conductive surface, a conductive circular ring and dielectric liquid, the conductive circular ring is arranged on the conductive surface, and the conductive circular ring and the conductive surface are insulated through a dielectric structure; dielectric liquid is arranged on one radial side of the conductive ring; voltage is applied to the conductive circular ring and the conductive surface; electrostatic forces on the two sides of the conductive ring are asymmetrically distributed through the dielectric liquid, and electrostatic force components in the tangential direction and the normal direction of the conductive surface provide electrostatic driving force and adhesive force for the conductive ring respectively. According to the invention, a parallel electric adhesion effect and an electrostatic driving effect are integrated into an adhesion-driving integrated structure, so that the conductive circular ring can flexibly move on a horizontal surface and a bent surface.

To provide artificial muscles comprising an electrode pair, and a method for actuating the artificial muscles.SOLUTION: Artificial muscles are provided including: a housing having an electrode region and an expandable fluid region; an electrode pair comprising a first electrode and a second electrode that are positioned in the electrode region of the housing; a dielectric fluid housed in the housing; and a stiffening member positioned between the housing and at least one of the first electrode and the second electrode. The stiffening member increases a stiffness of the housing in a direction toward the expandable fluid region from an opposite edge of the electrode region. The electrode pair is actuatable between a non-actuated state and an actuated state such that the actuation from the non-actuated state to the actuated state directs the dielectric fluid into the expandable fluid region.SELECTED DRAWING: Figure 1