59 results about "Rotational energy" patented technology

The utility model provides a base damping device of a vacuum vibration press, which belongs to the technical field of damping and comprises a moving table and a damping component arranged at the top of the outer wall of the moving table, and the damping component comprises a damping seat, an auxiliary frame, a mounting frame, a damper, an angle frame, a limiting frame, a resistance reducing wheel, a supporting seat, a buffer spring and a limiting frame. The auxiliary frame is fixedly arranged at the corner of the bottom of the outer wall of the damping seat, and the limiting frame is embedded in the inner wall of the auxiliary frame. The damping assembly and a buffer spring form a rigid-flexible damping structure through a damper, high-frequency vibration can be absorbed at the same time, rapid energy consumption through damping can be achieved, low-frequency vibration can be elastically buffered through the spring, dynamic adjustment is achieved through a resistance reduction wheel, the resistance reduction wheel rolls in a limiting frame, impact force is dynamically dispersed in cooperation with a supporting base, stress concentration is avoided, and the service life of the damping assembly is prolonged. The rolling design of the resistance reduction wheel converts linear vibration into rotating kinetic energy, and direct damage of transverse impact to the structure is reduced.

The invention provides a waterproof connector for a new energy electric vehicle, which comprises a body and a moisture absorption sealing element arranged at a seam of the body, and further comprises an energy capturing mechanism, an energy storing and releasing mechanism, an executing mechanism and a switching mechanism, the energy capturing mechanism can convert environment vibration energy into rotation kinetic energy and transmit the rotation kinetic energy to the energy storing and releasing mechanism. The energy storage and release mechanism has an energy storage mode and an energy release mode. In the energy storage mode, the energy storage and release mechanism can store rotation kinetic energy input by the energy capturing mechanism as elastic potential energy. In the energy releasing mode, the stored elastic potential energy can be released into rotating kinetic energy and transmitted to the executing mechanism; the executing mechanism can extrude the moisture absorption sealing piece by utilizing the rotating kinetic energy input by the energy storage and release mechanism, convert the rotating kinetic energy into heat energy and transmit the heat energy to the moisture absorption sealing piece; the switching mechanism can control the energy storage and release mechanism to be switched between the energy storage mode and the energy release mode. According to the method, the thermodynamic dehumidification efficiency is remarkably improved by means of synergistic drying of mechanical extrusion and friction heat generation.

The invention relates to the technical field of bottle separating assemblies, and discloses a screw rod bottle separating assembly for fruit juice production, the screw rod bottle separating assembly comprises a screw rod body, a spiral groove is formed in the outer surface of the screw rod body, and a plurality of openings are formed in the circumferential outer surface of the screw rod body. The two spiral protrusions make contact with the outer surface of a bottle body, the bottle body is clamped between the two spiral protrusions, due to the fact that the spiral protrusions are rotating, when the outer surfaces of the spiral protrusions make contact with the bottle body, the bottle body can be driven to rotate, at the moment, tangential thrust of the spiral grooves in the screw body on the bottle body can be more converted into rotation kinetic energy of the bottle body, and therefore the bottle body can rotate more conveniently. Compared with the prior art, the device has the advantages that the bottle body is not tried to be directly'pushed over ', so that the forward power conversion of the bottle body is smoother, and transverse force and torque which directly act on the bottle body and cause swinging are reduced by'shunting', so that an excitation source of transverse vibration is inhibited, the bottle body can be ensured to be more stable, shaking and jumping of the bottle body are avoided, and the efficiency of subsequent juice filling production is ensured.

A multifunctional integrated Mars reentry detector relates to the technical field of Mars detection and mainly comprises a detector body, a rotor wing, a nose cone cover, a rotating device, a heat shield and the like. During launching, the rotor wings are in a compressed and folded state, and the detector body, the nose cone cover and the heat-proof cover serve as a whole device fairing. In the initial stage of reentry, the heat shield is used for protecting the rotor blade from pneumatic heating, can be further unfolded to a certain angle after descending at a certain speed, and serves as a speed brake for further speed reduction. And when the speed is reduced to subsonic speed, the rotor blades are unlocked and released, the blades are unfolded through an internal telescopic mechanism, the blades are driven to rotate by utilizing relative incoming flow, and rotation kinetic energy is converted into electric energy to be stored while lift force is provided for deceleration. In the landing stage, the rotor wings are switched to an active working mode, stored electric energy is used for providing rotating power for the rotating device, and autonomous hovering and obstacle avoidance are achieved; and the heat shield is completely unfolded to provide stable support and buffer for the detector body.

The utility model discloses a full -automatic multilayer bag unpacking machine relates to industrial production unpacking technical field, including guide plate, screening screen board, and one end of guide plate is provided with material guiding unpacking subassembly, and first output shaft drives first synchronous wheel rotation and drives its outer wall first synchronous belt to do rotating work on two second synchronous wheels to realize driving driving gear rotation, and driving gear is engaged with first driven gear and drives rotating lever and rotating shaft rotation, and a plurality of material guiding plates on the outer wall of positioning block guide the material of discharging, avoid the work of realizing uniform speed discharging simultaneously to avoid the block, and the work of cutting the packing bag of discharging is realized by the rotation of unpacking blade, and the rotating kinetic energy of rotating shaft is transported to the input end of two fourth synchronous wheels through third synchronous wheel, second synchronous belt by second output shaft, realizes the rotating work of using two second driven gears through output end drive big driving gear, big driven gear, and the work of breaking the material in the packing bag after cutting can be broken by setting broken auger.

A power take-off includes a housing that is adapted to be supported on a source of rotational energy, an input mechanism that is supported within the housing and adapted to be rotatably driven by the source of rotational energy, and an output mechanism that is supported within the housing and rotatably driven by the input mechanism. At least one of the input mechanism and the output mechanism includes a pair of mating gears. An eddy current damper is supported within the housing and configured to exert a drag torque on either or both of the mating gears during operation of the power take-off. The eddy current damper may provide a variable amount of such drag torque, a constant amount of such drag torque, or a combination of both.

The invention relates to the technical field of door opening of storage cabinets, in particular to a storage cabinet. According to the storage cabinet, the pedal door opening mechanism is arranged on the side, away from the hinged side, of the cabinet body, the pedal piece of the pedal door opening mechanism is rotationally connected with the base, and when the pedal part of the pedal piece bears treading force, the door opening piece is driven by the connecting shaft to rotate forwards relative to the base, so that the door opening piece jacks the door body. The pedal piece is further constructed to rotate backwards relative to the base and independent of the door opening piece. And the pedal part is rotationally connected with the connecting shaft. When the pedal part is subjected to accidental acting force within a certain range, the pedal part can independently rotate in the direction deviating from the door opening direction or simultaneously rotate in the direction deviating from the door opening direction and towards the first side face, the accidental acting force part is converted into rotating kinetic energy of the pedal part, the possibility of hard collision between the pedal part and a user is reduced, and the user experience is improved. The impact force directly transmitted to the feet of the user is reduced, so that the pain of the user when the user collides with the pedal piece is reduced, and the safety of the pedal door opening mechanism is improved.

The present invention provides a liquid film reconstruction-based super uniform distribution spiral sheet liquid distributor, and relates to the technical field of chemical equipment, the device mainly comprises a distribution disc, a flow guide sleeve, a convergence hopper, a flow guide rod with a variable cross-section spiral blade and reconstruction sawteeth, and an independent riser with a reverse folding edge shielding cap, the core distribution mechanism depends on the variable cross-section helical blades, the gravitational potential energy of liquid is converted into rotation kinetic energy through the design that the width is gradually increased from top to bottom and the screw pitch is gradually reduced, so that a liquid film is stably spread from narrow to wide and from thick to thin under the driving of centrifugal force, and finally physical tearing is carried out through reconstructed sawteeth at the edges of the blades. A continuous liquid film is converted into a high-density fine equivalent dot matrix droplet array, the problems that a traditional distributor is insufficient in radial covering force and limited in distribution point density are solved, meanwhile, a shielding cap and a reverse folding edge are arranged at the top of a riser, liquid is effectively prevented from climbing on a wall by means of physical breakpoints, and entrainment and gas-liquid momentum interference under high loads are prevented.

A non-transitory computer readable medium having a computer program stored thereon causes a computer to perform a method for controlling a drilling system in a manner that reduces stick-slip including: receiving a desired rotation speed v0 of the drive system to rotate the drillstring, receiving property measurements of the drilling system, and deriving therefrom a rotation speed vup of upgoing rotational waves of the drillstring associated with upgoing rotational energy in the drillstring. An actual rotation speed v of the drive system to rotate the drillstring is determined by representing energy in the drillstring as a mathematical expression containing a sum of rotational energy produced by the drive system and downgoing rotational energy caused by the upgoing rotational waves that are reflected at an upper end of the drillstring, and then optimizing the mathematical expression, which is then used for controlling the drive system to rotate the drillstring at v.

The mechanical conversion efficiency improving mechanism based on the inertia wheel relates to the field of transmission efficiency conversion and comprises a fixing plate, a bottom plate is fixedly installed at the lower position of the front portion of the fixing plate, and a motor is fixedly installed at the center position of the bottom plate. And a supporting plate and a carrying plate are fixedly mounted at the front part of the fixed plate and are positioned above the bottom plate. According to the mechanical conversion efficiency improving mechanism based on the inertia wheel, through the suspension structure design that like poles repel each other of the upper magnetic block and the lower magnetic block, the gravity of the upper magnet is balanced through magnetic repulsive force, so that a motor shaft completely gets rid of pressure in the vertical direction, friction loss caused by axial pressure in a traditional structure is avoided, and the mechanical conversion efficiency is improved. Ineffective energy consumption is reduced fundamentally, only tangential magnetic force for driving rotation is reserved, a power transmission path is optimized, motor output power is more efficiently converted into rotation kinetic energy of an inertia wheel, and mechanical conversion efficiency is remarkably improved.

A system to generate power, the system comprising a shaft configured for one-directional rotation around a horizontal axis, an inertial object coupled to the shaft where the inertial object has an uneven distribution of mass around the shaft, an electric generator configured to extract rotational kinetic energy from the shaft, and an electric motor configured to provide restorative energy to the shaft. The power generation method comprises steps of providing a power generation system, placing the shaft in an initial position, and inducing shaft rotation. Once shaft rotation is induced, the method alternates between steps of power generation and power consumption

The present invention discloses a personal transportation device comprising a frame structure, a board platform, and a propulsion assembly. The board platform mounted on an upper portion of the frame to support a standing rider. The propulsion assembly mounted to a lower portion of the frame comprises an axle assembly, a first wheel assembly, a second wheel assembly, an endless drive unit, a drivetrain assembly, and a suspension system. The axle assembly comprises a first axle and a second axle opposite to the first axle. Each axle comprises a pair of wheels. The endless drive unit is engaged with the wheels to rotate in response to the wheel rotation to propel the device. The drivetrain assembly coupled to the axle assembly comprising a motor assembly. Each motor transfers rotational energy to the wheels. A suspension assembly connected between the frame structure and wheels to enable multidimensional articulation and absorb vibrations.

The invention provides a low-bit-pressure efficient rock breaking method and a drill bit, and belongs to the technical field of drill bits. The low-bit-pressure efficient rock breaking drill bit comprises a main body part, a drilling part and a reaming part. The drilling part is arranged at the end part of the main body part, a plurality of cutting wings are arranged on the peripheral surface of the drilling part, the cutting wings are uniformly distributed in a radial shape, the cutting wings are arc-shaped, and a plurality of cutting teeth are uniformly fixed on the cutting wings along the arc direction; the reaming part is arranged on the peripheral surface of the main body part, the reaming part is of a conical spiral structure, the small-diameter end of the reaming part abuts against the drilling part, and a plurality of reaming teeth are evenly fixed to the reaming part in the spiral line direction. In this way, the drilling part is in stable contact with the stratum through the arc-shaped cutting wings, vibration and deflection of the drill bit can be restrained, and drilling stability is enhanced. Meanwhile, by means of the arrangement of the cutting teeth of the conical spiral structure, rotating kinetic energy is converted into axial propelling force, the self-advancing capacity of the drill bit can be enhanced, dependence on external bit pressure is reduced, and the low-bit-pressure drilling effect is achieved.

The present application relates to the technical field of energy control, in particular to an aviation tire test energy control method and system, in order to solve the problem of poor test precision of tire energy absorption in the prior art, a radial load is applied to the aviation tire reaching the landing speed, and landing deceleration simulation is performed on the aviation tire based on load, inertia simulation and brake; the motor energy, brake energy absorption and drum residual energy of the aviation tire during the landing deceleration simulation process are calculated in real time; the measured value of the absorption energy of the aviation tire is calculated in real time based on the initial rotational energy, motor energy, brake energy absorption and drum residual energy; the output of the motor is closed-loop feedback adjusted based on the measured value of the absorption energy and the target curve constructed in advance, so as to reduce the deviation between the measured value of the absorption energy and the target value, and the application makes the experimental control process more accurate and can accurately fit the target curve.

The application provides a Roots rod pump vacuum unit damping device and a damping method, and belongs to the technical field of vacuum pumps.It solves the technical problems of single damping dimension, insufficient composite vibration suppression, poor adaptability to large impact or high-frequency micro-vibration of the existing Roots rod pump vacuum unit damping device.A Roots rod pump vacuum unit damping device comprises a fixing base, a buffer plate fixedly installed on the surface of the fixing base, an installation plate inserted through the periphery and fixed inside the fixing base, and a Roots vacuum pump fixedly installed on the surface of the installation plate.A fixed tooth ring is fixedly installed on the surface of the fixing base.In the application, the vertical energy of the vibration of the Roots vacuum pump can be transmitted to the wedge-shaped bottom block through the installation plate and finally converted into rotary kinetic energy to achieve preliminary dissipation, and the horizontal vibration is absorbed by the independent damping spring and the horizontal damping unit under the action of the horizontal damping assembly.

A fishing rod assembly includes a rod and a reel assembly. The reel assembly includes a housing, a spool positioned within the housing, the spool configured to rotate about an axis to retrieve or let out a fishing line, a drive mechanism concentric with the axis, the drive mechanism configured to receive rotational kinetic energy from a user and drive the spool to take-up fishing line when a counter-torque provided to the spool by the fishing line is less than a target torque, and a drag mechanism. The drag mechanism is drivable by the drive mechanism to (a) drive the spool to take-up the fishing line when the counter-torque provided to the spool by the fishing line is less than the target torque or (b) provide a drag force to the spool when the counter-torque provided to the spool by the fishing line is less than the target torque.

The utility model provides a kind of full liquid receiving floating disc sealing anti-rotation limiting device, belong to petrochemical field, including floating disc, the inside of the floating disc is provided with anti-rotation limiting assembly, the side of the anti-rotation limiting assembly is provided with auxiliary assembly, the utility model is provided with anti-rotation limiting assembly, it is realized as the structure of preventing rotation of floating disc, by rigid connection frame that penetrates the inside of floating disc, rotation torque is directly converted into axial tension and is transmitted to the edge of floating disc, forms distributed anchoring force, its internal filler material is while buffering torsional load, ensure the efficient conduction of restraint, from the mechanical root block the rotation tendency of floating disc, by the auxiliary assembly of setting, it is realized that this component constructs friction in the periphery of floating disc: outside corrosion-resistant friction structure is consumed rotary kinetic energy by contact tank wall, realize physical brake;Prevent the rotation risk induced by imbalance or deformation.

The invention relates to a rotating disc cavity wind resistance restraining structure of an aero-engine and a using method of the rotating disc cavity wind resistance restraining structure, and belongs to the technical field of rotating machine.The tangential rotating speed of airflow in a rotating disc cavity can be effectively increased by installing a free rotating disc in the rotating disc cavity; air flow kinetic energy originally lost due to friction in a disc cavity is converted into rotating kinetic energy, so that fluid resistance and temperature rise are reduced, and the disc is suitable for sealing or fluid dynamics optimization scenes of high-speed rotor systems (such as turbomachinery and precise instruments). The airflow flowing path and the energy utilization efficiency in the cavity of the rotating disc are optimized, the wind resistance and the temperature rise effect are remarkably reduced, and meanwhile the transmission efficiency and reliability of a rotor system are improved.

A drive system (200) for providing rotational energy to a rotor assembly via a rotor mast, the drive system (200) comprising: an aft end having an electric motor for providing rotational energy to a drive shaft, a forward end connected to the drive shaft for receiving rotational energy from the electric motor via the drive shaft and providing rotational energy to the rotor mast via a rotor shaft, and an adapter (240) having a first interface connected to the electric motor and a second interface connected to the forward end, wherein the drive system (200) is rotatable relative to a wing about a tilt axis (230) located on the adaptor (240) between the electric motor and the forward end.

A rotary tool may include a drive system including a first rotary component and a second rotary component, an energy storage element, an actuator system including a first actuator element disposed on the first rotary component and a second actuator element disposed on the second rotary component, a coupling mechanism, and an output element. The coupling mechanism may be operable between coupled states and decoupled states. During operation, the energy storage element may accumulate rotational energy via the drive system and relative rotation between the first rotary component and the second rotary component may cause interactions between the first actuator element and the second actuator element. The interactions may transition the coupling mechanism between the coupled states and the decoupled states. When the coupling mechanism is in the coupled states, the energy storage element may be configured to deliver a torque impulse to the output element.

The utility model belongs to the technical field of side slope protection, and discloses a side slope protection device for green mine construction, which comprises a slope protection plate, a plurality of groups of broken stone blocking mechanisms are arranged on the slope protection plate, and the plurality of groups of broken stone blocking mechanisms are distributed from top to bottom in a staggered manner; each gravel blocking mechanism comprises a fixing column fixedly installed on the slope protection plate, a cylinder groove is formed in the outer side of each fixing column, and compared with the prior art, the slope protection plate has the advantages that by means of the multiple gravel blocking mechanisms designed in a staggered mode, when gravel rolls along the slope surface of the slope protection plate, the side blocking rods block the gravel. When broken stones impact the side stop levers, stopping and force unloading are carried out cooperatively. By means of the rotating design of the rotating cylinder, the side stop lever rotates along with the force after being stressed, impact force brought by gravel is converted into rotating kinetic energy, gravel rolling energy is consumed, and the gravel is forced to be decelerated. The staggered layout of the multiple sets of side stop levers enables the broken stone rows to collide back and forth, kinetic energy is continuously lost, and the broken stone rows roll to the slope bottom in a relatively slow and safe state.

This application relates to the field of motor performance testing technology, and particularly to a method, apparatus, electronic device, and storage medium for determining the mechanical losses of a motor. The method includes: controlling the motor under test to enter a preset free-fall state, wherein the rotor permanent magnet of the motor under test is a non-magnetized magnet; acquiring multiple speed values ​​of the motor under test in the preset free-fall state and the corresponding acquisition time for each speed value, and generating speed-time data pairs for the motor under test based on each speed value and each acquisition time; calculating the instantaneous dissipation power of the rotational kinetic energy of the motor under test based on the speed-time data pairs, and determining the mechanical loss power of the motor under test at different speed values ​​based on the instantaneous dissipation power. This solves the problems of complex, costly, and limited accuracy in mechanical loss measurement processes caused by the need to separate copper losses, iron losses, and eddy current losses in related technologies, and achieves non-destructive, rapid, and high-precision measurement of the mechanical losses of a motor across its entire speed range.

The application relates to the technical field of locker door opening, in particular to a locker. The locker is characterized in that a foot-pedal door opening mechanism is arranged on the side of the cabinet body away from the hinge, a foot-pedal part of the foot-pedal door opening mechanism is rotationally connected with a base, when the foot-pedal part bears the treading force, the door opening part is driven to rotate forward relative to the base through a connecting shaft, so that the door opening part pushes open the door body. The foot-pedal part is also configured to rotate backward relative to the base independently of the door opening part; the foot-pedal part is rotationally connected with the connecting shaft. When the foot-pedal part is subjected to an accidental force within a certain range, the foot-pedal part can rotate independently in the direction away from the door, or simultaneously in the direction away from the door and the direction towards the first side, part of the accidental force is converted into the rotational kinetic energy of the foot-pedal part, the possibility of hard collision between the foot-pedal part and the user is reduced, the impact force directly transmitted to the foot of the user is reduced, the pain of the user when colliding with the foot-pedal part is reduced, and the safety of the foot-pedal door opening mechanism is improved.

The invention belongs to the technical field of space tether systems, and discloses a space tether system rotation driving unfolding and retracting method and device. According to the method, the centroid body is locked to a rotating mechanism in a relatively static mode, and controllable release of the centroid body is achieved through rotating centrifugal force; during recovery, traction is performed in the tension direction of the tether, so that the centroid body approaches the body in a manner of rotating and gradually reducing the radius; and at the recovery tail end, a guide mechanism is used for enabling the material to naturally rotate into a circular motion trail surrounding the body, and stable butt joint is achieved by means of synchronous rotation control. And finally, the centroid body is locked again, and the rotation kinetic energy of the system is reserved as the reserve energy of the next task. According to the method, the impact, attitude disturbance and collision risks in the tether unfolding and retracting process are effectively reduced, and the safety, controllability and energy utilization efficiency of space tether operation are improved.

The invention discloses a door lock structure and a wafer transportation box, and relates to the technical field of semiconductor equipment, a rotating part is rotationally connected with a door body, so that the rotating part can rotate in the first direction, and the rotating part has an energy releasing position and a locking position which are sequentially arranged on a movable track in the first direction; the first elastic arm is connected with the door body and located on the side, provided with the first protruding part, of the rotating piece, when the rotating piece rotates to the energy releasing position in the first direction, the first elastic arm is in sliding contact with the first protruding part and is in an elastic bending state, and when the rotating piece continues rotating in the first direction, the first elastic arm is in sliding contact with the second protruding part. The first elastic arm is in sliding fit with the first protruding part, in the process, elastic potential energy of the first elastic arm can be converted into rotating kinetic energy of the rotating piece, so that power is provided for the rotating piece to rotate to the locking position, and it can be ensured that the rotating piece smoothly rotates to the locking position even under the condition that no external force exists; and the probability that the door body is not locked is effectively reduced.

This invention relates to the field of compressed air energy storage power generation technology, specifically to a top-axis pneumatic flywheel energy storage power generation device. It primarily addresses the technical problems of low energy conversion efficiency and limitations in installed capacity and site selection for existing compressed air energy storage power generation devices. During peak power generation periods with abundant resources, this device generates and stores compressed air using a pneumatic motor unit. During peak grid demand periods, the compressed air is released and used to generate electricity through a generator, outputting stable electrical energy and performing peak shaving and frequency regulation for the system, thereby achieving grid system regulation and energy storage. This device also utilizes the height difference between the top-axis running component and the ground transmission component to lengthen the rotational lever arm, increase the rotational torque of the rotating oscillating component, and employs multi-stage drive operation to obtain incremental rotational kinetic energy, thereby improving the installed energy conversion efficiency. Simultaneously, it effectively reduces compressed air consumption, achieving system efficiency improvement and energy-saving operation, making the installed capacity and site selection more flexible.

The present invention relates to an apparatus and method for converting thermal energy into mechanical rotational energy in a triangulation cycle (TLC process). A rotary unit for converting thermal energy of a heating working medium (AM) into rotational energy according to a TLC process is characterized by a continuous tubular line wound in a geometrical shape, preferably a spiral, and arranged eccentrically on a support structure, in which a uniform, continuous pressure reduction is achieved by means of centrifugal forces acting on the liquid working medium, meanwhile, the continuous expansion evaporation of the working medium and the simultaneous acceleration and flow velocity increase of the working medium are accompanied. The working medium which is partially evaporated or kept in a liquid state and is ejected from the nozzle at the tail end of the hose-shaped pipeline at a high speed enables the rotating unit to start rotating motion according to the principle of a counter-force turbine.

The present invention discloses a personal transportation device comprising a frame structure, a board platform, and a propulsion assembly. The board platform mounted on an upper portion of the frame to support a standing rider. The propulsion assembly mounted to a lower portion of the frame comprises an axle assembly, a first wheel assembly, a second wheel assembly, an endless drive unit, a drivetrain assembly, and a suspension system. The axle assembly comprises a first axle and a second axle opposite to the first axle. Each axle comprises a pair of wheels. The endless drive unit is engaged with the wheels to rotate in response to the wheel rotation to propel the device. The drivetrain assembly coupled to the axle assembly comprising a motor assembly. Each motor transfers rotational energy to the wheels. A suspension assembly connected between the frame structure and wheels to enable multidimensional articulation and absorb vibrations.

A transducer comprising a primary element comprising a magnet configured to provide a magnetic field within a magnetic zone, the magnetic field extending in a magnetic field direction; a secondary element comprising a first graphene sheet located within the magnetic zone; a static portion; and a rotating portion configured to rotate about an axis of rotation relative to the static portion. The rotating portion comprises a first one of a set comprising the primary element and the secondary element; and wherein the static portion comprises a second one of the set; and wherein an axis of rotation of the rotating portion is such that: in a first position of the static portion relative to the rotating portion, the first graphene sheet lies in a first plane that is parallel to the magnetic field direction; and in a second position of the static portion relative to the rotating portion, the first graphene sheet lies in an offset plane that is at an angle to the first plane about the axis of rotation. On deployment of the transducer in a first mode, movement of the rotating portion relative to the static portion causes an electrical potential to be generated in the first graphene sheet thereby converting rotational kinetic energy into electrical potential; and / or on deployment of the transducer in a second mode, electrical potential in the first graphene sheet causes rotation of the rotating portion relative to the static portion thereby converting electrical potential into rotational kinetic energy.