223 results about "Electromechanical actuator" patented technology

An electromechanical actuator including an electric motor housed in a housing, the electric motor acting on a torque output element capable of being coupled to an element of a transmission gearbox of a motor vehicle. The torque output element is connected to the electric motor by drive means, and the torque output element is a main shaft configured to rotate about its axis of rotation with a first end and a second end. The actuator further includes a circuit board located in the housing, the circuit board comprises a sensor which faces a magnet mounted on a support coupled to the second end of the main shaft by means of a first swivel-linear mechanism.

An electro-mechanical actuator for a valve can have a collar configured to envelope a portion of a commercially available liquid coupler. The collar can engage a region of the liquid coupler and a bias member can urge the collar to displace a movable member of the liquid coupler and thereby to break a coupling. A dowel can retain the collar against the force applied by the bias member and a tension member can, under threshold tension, retract the dowel, releasing the collar to move under influence of the bias member. Other valves have a gate element coupled with an armature to rotate the gate element under an electromagnetic field. The gate element can define a recess and a retainer can reside in the recess. As the gate element rotates, the retainer can align with a longitudinal segment of the recess and allow the gate element to displace longitudinally.

A latch assembly (10a; 10b) comprising a base structure 10b(12 ); an elongated latch slider (14a; 14b) including a slider feature (62a; 62b) and being slidable between a free position (18) and a latching position (40); and a lock device (26) including an electromechanical actuator 22(72 ) and a lock element (74a; 74b) movable by the actuator between an unlocked position (92), and a locked position (96) for engaging the slider feature to prevent movement of the latch slider from the latching position to the free position; wherein the lock device further comprises a drive feature (76) driven by the actuator; wherein the lock element comprises a driven feature (86) arranged to be contacted and driven by the drive feature; and wherein a base clearance (98) between the lock element and the base structure is smaller than a drive clearance (104) between the drive feature and the driven feature.

The utility model relates to the technical field of electromechanical actuators, and one embodiment of the utility model provides an electromechanical actuator which comprises two supporting seats, supporting grooves are formed in the supporting seats, a U-shaped supporting frame is arranged on one sides of the two supporting seats, and the two ends of the supporting frame extend into the supporting grooves and are in sliding connection with the side walls of the supporting grooves. The device further comprises an electric push rod, an actuator body, supporting through holes and a clamping mechanism, the electric push rod is fixedly arranged between the groove bottom of the supporting groove and the supporting frame, the actuator body is arranged on one side of the supporting frame, the supporting through holes are formed in the positions, located on the two sides of the actuator body, of the supporting frame, and the clamping mechanism is arranged on the supporting frame. According to the technical scheme, the electromechanical actuator height adjusting device solves the technical problem that in the prior art, height adjustment of electromechanical actuators of different specifications is inconvenient.

This disclosure describes techniques for a self-aligning system within a belt-driven linear actuator that enables a “keyless” or “round profile” piston to be sealed while maintaining an aligning and / or torque resisting ability. This enables the airspaces within the electromechanical actuator could be pressurized to perform a secondary load holding function that is redundant to the linear screw device.

The present invention relates to a valve body (100) for an electromechanical actuator in a vehicle, comprising a gas conduit (102) extending through the valve body (100) along an X axis, a liquid or fluid conduit (120) extending through the valve body (100) along a Y axis, the liquid or fluid conduit (120) having two ends (108a, 108b), a first external conduit (124a) connected to the first end (108a) of the liquid or fluid conduit (120) and a second external conduit (124b) connected to the second end (108b) of the liquid or fluid conduit (120), at least one of the two ends (108a, 108b) of the liquid or fluid conduit (120) comprising a reinforcing element (122), the reinforcing element (122) being a plurality of reinforcing ribs formed near of at least one of the two ends (108a, 108b) of the conduit for liquid or fluid (120).The present invention also relates to an electromechanical actuator comprising such a valve body (100). Figure for the abstract: Figure 1.

Disclosed is an electromechanical actuator comprising an electric motor, a coupling element and a monostable clutch (23a). The clutch (23a) comprises a central shaft (43), a mobile member (44) and a coil (45), which generates a magnetic field when this coil is powered, so as to cause the member (44) to move relative to the shaft (43). The shaft (43) comprises a core (46), a ring gear (47) and a ring (52), arranged between the core (46) and the ring gear (47). The core (46) and the ring gear (47) are in contact with the member (44) only in a second position, so as to rotate the shaft (43) as a result of grip. Furthermore, the supply to the coil (45) is implemented continuously, only while the member (44) is moving between a first position and the second position, and while the member (44) is being held in the second position.

Disclosed is an electromechanical actuator (11) comprising an electric motor, a first coupling element, a second coupling element, a first clutch (23a), a second clutch (23b) and a housing (49) common to the clutches (23a, 23b). The first clutch (23a) is engaged or disengaged, so as to secure or disengage, at least in terms of rotation, the first coupling element (20a) with respect to the motor (16). The second clutch (23b) is engaged or disengaged so as to secure or disengage, at least in terms of rotation, the second coupling element (20b) with respect to the motor (16). The housing (49) comprises a first part (41) and a second part (55). The first part (41) comprises a first barrel and a second barrel. The first clutch (23a) is mounted in the first barrel. The second clutch (23b) is mounted in the second barrel. Further, the second part (55) is fixed on the first part (41).

A method is for testing a functionality of a system of a wind turbine. The system includes an electro-mechanical actuator, an energy storage unit, and an energy dissipating element connectable to the energy storage unit for selectively transferring energy from the energy storage unit to the energy dissipating element. The method includes: providing first information representative of an operating mode of the system, and, if the operating mode is a test mode: causing a discharging of energy from the energy storage unit and a supply of at least a portion of the discharged energy to the energy dissipating element; receiving measurements being representative of a state of at least one of the energy storage unit and the energy dissipating element during the discharging and the supply; and determining a functionality of at least one of the energy storage unit and the energy dissipating element based on the measurements.

The invention discloses a transmission gap detection and adjustment device for an electromechanical actuator. The transmission gap detection and adjustment device comprises a gap output measurement module, an electromechanical actuator limiting quick release module and an angle input calibration module, wherein the bottom of the electromechanical actuator limiting quick-release module is connected with a sliding rail at the bottom end of the gap output measurement module; the angle input calibration module is connected with an internal mechanical transmission input shaft of the electromechanical actuator; and the electromechanical actuator is arranged on the electromechanical actuator limiting quick release module. The problems that in the prior art, transmission gap measurement of an internal mechanical structure of an electromechanical actuator is not accurate enough, a detection device is complex in structure and difficult to maintain, and the quality requirement for the size of a transmission chain gap in the assembly process of the electromechanical actuator cannot be met are solved.

A device formed by a spindle is connected to a nut and to one or more servo motors where the transmitted torque will be the sum of the separate torques of the servo motors. The device has a set of two or more rods arranged around the spindle. The spindle is supported in two bearing housings that restrict axial movement in both directions, including an anti-reverse system that only allows a drive shaft to rotate, all inside an inner sleeve. An outer sleeve moves along the outside of the inner sleeve under a fixed metal structure for securing to a machine, keeping all particle entry units closed. Four screwed elements allow the spindle to be put into a parked position to facilitating replacement of wear units.

Linear electromechanical actuator (1), comprising a containment structure (2); a pusher (3); a mechanical reduction apparatus (4); drive means (5) operatively connected to said mechanical reduction apparatus (4) to rotate it about said rotation axis (X); a shaft (6) connected to said mechanical reduction apparatus (4) such that a rotation of said mechanical reduction apparatus (4) determines a translation of the shaft (6) along said rotation axis (X); an active anti-rotation mechanism; the mechanical reduction apparatus (4) comprises a nut (8) and a longitudinal pushing element independent of each other and rotatable about said rotation axis (X) under the action of said drive means (5); said longitudinal pushing element (9) being fitted into said nut (8); coupling means (10, 11, 15, 16) configured to mechanically couple said nut (8) and said longitudinal pushing element (9) with said shaft (6), such that a rotation of said nut (8) and / or of said longitudinal pushing element (9) determines a translation of said shaft (6) along said rotation axis (X); said coupling means (10, 11, 15) comprising: an intermediate coupling stage (10) interposed between the nut (8) and the longitudinal pushing element (9), said shaft (6) being at least partially fitted into said intermediate coupling stage and into said longitudinal pushing element (9).

A ball screw drive, in particular for an actuator of a hydraulic brake system, includes two spindle drive elements, namely a threaded spindle and a spindle nut which can be rotated relative to the threaded spindle. One of the spindle drive elements is provided as a rotatable drive element, and the second spindle drive element is provided as an output element which can be moved in a secured manner against rotation. The ball screw drive additionally includes a damping element that is configured as an annular element concentric relative to a central axis of the threaded spindle. The annular element is rigidly connected to one of the two spindle drive elements, and can be simultaneously rotated and moved relative to the other spindle drive element in a play-free manner.

A system for providing cooling air within a hybrid electric gas turbine engine includes at least one cooling air tube configured to provide high pressure turbine cooling air from a first location to a second location within the hybrid electric gas turbine engine. At least one throttling valve each located on the at least one cooling air tube configured to limit a flow of the high pressure turbine cooling air from the first location to the second location. At least one electromechanical actuator each associated with the at least one throttling valve configured to actuate the throttling valve to a first flow level when the hybrid electric gas turbine engine is in a first condition and to a second flow level when the hybrid electric gas turbine engine is in a second condition responsive to control signals from an external source.

Connection adapter (2) with an electromechanical actuator (1) in operative connection with a pilot valve or a valve (18) for pressure change, wherein the electromechanical actuator (1) has an axis (14) whose rotational movement is directed towards a translational position change of a pressure piece (19) with a spring preload, characterized in that the connection adapter (2) has an upper connection surface (5) for connection with different electromechanical actuators (1), wherein a lower parallel connection surface (6) is formed at a distance from the connection surface (5) by a spacer body (11), within the spacer body (11) a closed guide dome (12) is formed, into which the axis (14) of the electromechanical actuator (1) dips and is axially guided by the pressure piece (19) and is in operative connection with it, wherein the axis (14) has at least one surface on its circumference,which engages in a corresponding recess of the pressure piece (19), wherein the pressure piece (19) has an external thread which interacts with an internal threaded bore (8) located within the guide dome (12) to change the relative position of the pressure piece (19).

An electromechanical actuator and a shielding device comprising such an electromechanical actuator. An actuator (11) comprises a housing, a motor (16), a control unit (15), and an electromagnetic wave filtering module (22). The filtering module (22) comprises a first inductor (41) extending along a direction defined by a first longitudinal axis (L1), a second inductor (42) extending along a direction defined by a second longitudinal axis (L2), and a support (48) on which the inductors (41, 42) are mounted. The first and second axes (L1, L2) extend respectively in a first plane and a second plane, parallel to an axis of rotation (X) of the actuator (11). In the first plane, the first axis (L1) is inclined with respect to the axis of rotation (X) by a first non-zero inclination value (α1).Furthermore, in the second plane, the second axis (L2) is inclined relative to the axis of rotation (X) by a second non-zero inclination value (α2). See Figure 6 for abbreviations.

The invention belongs to the technical field of electromechanical actuators, and provides a dual-mode electromechanical actuator based on a planetary roller lead screw pair. The actuator comprises a planetary roller lead screw pair and a reverse planetary roller lead screw pair which share one redundant lead screw, and a main transmission chain and a standby transmission chain which are physically isolated are formed by the planetary roller lead screw pair and the reverse planetary roller lead screw pair respectively. The main transmission chain drives the redundant lead screw to rotate through the main motor, so that the driving nut is linearly output; the standby transmission chain drives the transmission nut to rotate through the standby motor, so that the redundant lead screw moves axially, and then the driving nut is driven to output. Through cooperative monitoring of the displacement sensor and the encoder, the system can be automatically switched to the standby chain in an undisturbed mode when the main chain breaks down, and the continuous output speed is kept. The single-point fault risk of a traditional actuator is thoroughly eliminated, high-reliability and high-safety redundant drive is achieved, and the method is particularly suitable for the high-requirement field such as aerospace.

A system includes a controller having one or more processors. The system also includes a memory, and instructions stored on the memory, and executable by the one or more processors to output a control signal that causes an actuation of a valve to move a test distance via an electromechanical actuator; receive electrical property data corresponding to the actuation over the test distance by the electromechanical actuator; evaluate a condition of the valve based on the electrical property data; and generate an output based on the condition of the valve.

One aspect of the present disclosure provides a boom floating control system for a construction machine including a boom, an arm, and an attachment, the boom floating control system comprising: an electromechanical actuator connected to the boom to raise the boom as the electromechanical actuator is extended and lower the boom as the electromechanical actuator is retracted, the electromechanical actuator including an electric motor configured to convert electric energy into a rotational motion and a linear actuator configured to convert the rotational motion of the electric motor into a linear motion; and a controller configured to, when a boom floating function is activated, perform control such that, with respect to a first external force acting in a direction in which the linear actuator extends, a maximum torque of the electric motor generable in a direction resisting the first external force is limited.

To prevent noise generated by the electromechanical actuator of the stabilizer from being transmitted into the passenger compartment when passing through a zero position, the stabilizer tube is designed as a so-called star profile, which is filled with elastomer in the indentations between the points of the star profile, thereby reducing structure-borne noise transmission into the passenger compartment.

A thermoforming apparatus includes a mold with a plurality of sections. Each section is independently movable. The thermoforming apparatus further includes a set of electromechanical actuators. Each electromechanical actuator is attached to a screw that moves each section of the plurality of sections to specific positions. The mold is configured to press against a blank to form a product with a shape corresponding to the specific positions of the plurality of sections.

An electromechanical actuator comprising a support plate (23) and, arranged on same, a linear actuator (1) housed between a movable upper plate (16) and a fixed lower plate (17), and an accumulator spring (14). In addition, the linear actuator (1) comprises a suction coil (2) attached at the end thereof, as well as a movable reset catch plate (11) to which a magnetising plate (4) is attached and is therefore movable with the reset catch plate (11). The electromechanical actuator further comprises levers (10) for transmitting the actuation towards an interlocking roller (9.2) or towards two interlocking rollers (9.1) and (9.2), depending on whether it is a one-way or two-way safety gear. Lastly, the electromechanical actuator comprises a series of monitoring sensors. This enables much more force to be delivered, a simplification of the system, increased safety contact pressing distance, springs that work under compression and a silent stand-by mode.

An electromechanical actuator and shading device comprising such an electromechanical actuator. An actuator (11) includes a reduction gear (19), which includes a first stage (37) and a second stage (39), and a centering shaft (71). The first stage (37) includes a bearing (76), which includes a first bore (77) and a second bore (78). The bearing (76) is mounted inside a bore (74) of a planet carrier (66) of the first stage (37) with an interference fit. The centering shaft (71) is mounted inside the first bore (77) of the bearing (76) with a loose fit. In addition, a shaft (59) of a sun pinion (40) of the first stage (37) is mounted inside the second bore (78) of the first bearing (76) with a loose fit. Figure for the abbreviation: Figure 6.

The emergency unlocking electromechanical actuator disclosed by the application has simple structure, compactness, and reliable performance.The application is achieved by the following technical scheme: a servo motor is connected with a disc gear transmission mechanism through a clutch shaft to drive a screw gear to rotate, a screw nut is constrained in a hollow step hole of a piston head through an end cover sliding sleeve, a steel ball lock is locked in a guide groove of the piston head by a locking groove on an inner wall of an outer cylinder, in an emergency, the clutch is disengaged, high-pressure medium enters the outer cylinder cavity through an emergency energy inlet on an outer ring surface of the outer cylinder to form a closed-loop emergency circuit that overcomes the elastic force of the reset spring, the high-pressure medium pushes the front end surface of the end cover sliding sleeve to the limit position of the steel ball lock on the end surface of the hollow step hole of the piston head, the steel ball lock is released from the locking groove, the steel ball lock is unlocked in an emergency, the high-pressure medium pushes the piston rod to drive the screw nut to reversely drive the screw transmission pair to rotate, and at the same time, the piston rod is extended in an emergency, thereby completing the unlocking and the extension of the piston rod.

This invention relates to the field of electromechanical actuator fault diagnosis and provides a condition-adaptive electromechanical actuator health status assessment method. Addressing the inconsistency between the health status assessment model and the actual health status trend under time-varying operating conditions, it proposes an adaptive electromechanical actuator health status assessment optimization method based on model-state linkage updates. This method utilizes filtering to update the EMA health factor state space model. Based on this, an adaptive health status assessment optimization model based on model-state linkage updates is established, enabling accurate online EMA health status assessment under time-varying operating conditions, thereby effectively assessing the actuator's health status under these conditions.

The present disclosure relates to a kind of stuck fault detection method, device, equipment, storage medium and program product.The method comprises: during the operation of equipment, the current state information of multiple first electromechanical actuators is collected, and multiple first electromechanical actuators are the same kind electromechanical actuator in the same working condition under the condition of being in the open state;Second electromechanical actuator stuck fault determination result is obtained, wherein the second electromechanical actuator is any one of the first electromechanical actuator, and stuck fault determination result is obtained according to the difference degree of the current state information of second electromechanical actuator and current group information, and current group information is determined by the current state information of multiple first electromechanical actuators.Such, utilize the similarity of the current of the same kind electromechanical actuator in the same working condition to judge, can effectively inhibit common mode interference, improve the accuracy and reliability of stuck fault detection, guarantee the stable operation of equipment.

This disclosure describes techniques for a self-alignment system within a belt driven linear actuator that enables a'keyless' or'round blunt profile 'piston to be sealed while maintaining alignment and / or anti-torque capability. This allows the air gap within the electromechanical actuator to be pressurized to perform an auxiliary load holding function redundant with respect to the linear screw arrangement.

A method for controlling an HVAC system (10) includes at least one flow regulator (16), an electromechanical actuator (20), one or more sensors (34) associated with the actuator, and a controller (32) operatively connected to the actuator and the sensors. The method includes the steps of actuating the flow regulator, receiving signals from the sensors, and determining, based on the signals, whether an actual or impending fault exists. The determination is made whether the fault is in the actuator or in the flow regulator.

The invention belongs to an electromechanical actuator control method, and particularly relates to an electromechanical actuator speed control method based on load matching. The electromechanical actuator driving motor is a non-salient pole type permanent magnet synchronous motor adopting vector control, position, speed and current three-closed-loop control is adopted, and the inherent characteristic that the rotating speed of the motor is decreased along with increase of the load of the driving motor is considered. The magnitude of the speed loop instruction amplitude limiting value is adjusted in real time according to the magnitude of the load, so that the motor works within the mechanical characteristic range of the motor, especially under different working conditions such as a direct load or a reverse load, it is guaranteed that the rotating speed instruction of the driving motor does not exceed the mechanical characteristic boundary of the motor, and the performance of the motor can be exerted to the maximum extent. The main idea of the method is to properly process the collected motor current, so that the motor current can represent the size of the load; and dynamically adjusting a speed ring instruction amplitude limiting value according to the size of the load, and finally realizing speed control based on the load change of the actuator.