41 results about "Electromechanical actuator" patented technology

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 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.

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.

A system configuration significantly reduces the number of interconnections needed between an electromechanical actuator (EMA) and an EMA controller (EMAC) while maintaining redundancy and other safety aspects needed by the target application. This allows simplification of communication interfaces between multiple sensors in the EMA and EMAC and unification of the interface to multiple sensors inside the EMAC, leading to cost and weight reduction that can be significant for many aerospace products and applications, including unmanned vehicle (e.g., UAM / UAV) applications.

The invention relates to a method for controlling a motorized drive device (5) for a covering device (3) of a closure, covering or solar-protection facility (100) comprising a roll-up screen (2) that can be wound onto a winding tube (4), the screen (2) having a solar-radiation permeability that is dependent on the intensity of a mechanical tensile stress applied to the screen (2) by the motorized drive device (5), the motorized drive device (5) comprising an electromechanical actuator (11) intended to be assembled with the roll-up screen (2), the control method comprising: - a first step (S110) of measuring a first temperature or of estimating the first temperature or of obtaining the first temperature; - a second step (S120) of measuring a first luminosity or of estimating the first luminosity or of obtaining the first luminosity; - a third step (S130) of calculating a control setpoint for the motorized drive device (5) so as to obtain a permeability defined according to a rule as a function of the first temperature and of the first luminosity; and - a fourth step (S140) of applying the control setpoint, the rule defining permeability values that decrease with the temperature and decrease with the luminosity.

A linear actuator may include a piston and a linear drive. The piston is slidably mounted for sliding along an axis. The linear drive includes a ball screw and a ball nut operably mounted on the ball screw, with rotation of the ball screw causing the ball nut to move axially along the ball screw. The piston is attached to the ball nut, and the piston is configured to be advanced along the axis as the ball screw is rotated.

A method for controlling an electromechanical vehicle brake, including a first brake body, a second brake body, and an electromechanical actuator. The method includes: carrying out a diagnostic step in which the actuator is controlled to move in a first direction with a force that is limited in comparison to a maximum possible force and in which the distance traveled is used to ascertain whether the vehicle brake is malfunctioning; if the diagnostic step reveals that the vehicle brake is malfunctioning, carrying out a malfunction identification step in which the actuator is controlled in a second direction opposite to the first direction with maximum force and in which the distance traveled is used to ascertain whether the vehicle brake is malfunctioning due to icing; and, if the malfunction identification step reveals a malfunction due to icing, carrying out a deicing step.

A microelectromechanical actuator structure including a microelectromechanical chip having a chip frame and a drive structure. The drive structure includes a first drive unit and a second drive unit. The first drive unit includes a first substrate and a first electrode structure. The first substrate has a first doping. The first electrode structure has a doping inverse to the first doping. The second drive unit includes a second substrate having a second doping and a second electrode structure having a doping inverse to the second doping. A pn junction is therefore formed between the substrates and the second electrode structures. The first electrode structure includes at least two first electrodes. The second electrode structure includes at least one second electrode. The first electrodes are arranged flat next to one another in a first electrode plane. The second electrode is arranged flat in a second electrode plane.

A method for controlling an electromechanical actuator for a blinding device during operation, including the associated electromechanical actuator and blinding device. A method for controlling an electromechanical actuator during operation includes a winding step (E100) of a screen, from a lower limit position of a bar or from a position of the bar located between the lower limit position and an arm break position, and, during the winding step (E100), a first control step (E11) of the actuator along a rotational speed ramp (V) from a first rotational speed setpoint (V1) of an output shaft of the actuator up to a second rotational speed setpoint (V2) of the output shaft, strictly greater than the first setpoint.so as to pass the breaking point of the arms at a rotational speed (Vc) of the output shaft located between the first and second setpoint values ​​(V1, V2). Figure for the abbreviation: Figure 5.

The invention relates to an electromechanical actuator (1) comprising a motor (2), a rotary part (3) rotatable about an axis of rotation (4) by the motor (2), and a brake device (5) drivable between a braking position and a release position. The brake device (5) has a brake disc (6) rotating with the rotary part (3) and a brake element (7) adjustable in an axial direction and acting on the brake disc (6) in the braking position. The invention is characterized in that the brake disc (6) has an inner region (8), a friction surface region (10) extending annularly about the axis of rotation (4) and comprising a first friction surface (11) formed on a first face portion of the brake disc (6), and an intermediate region (9) extending about the axis of rotation (4) between the friction surface region (10) and the inner region (8), and a first counter surface (17) is formed on the brake element (7), facing the friction surface (11) and interacting with the first friction surface (11) in the braking position.

This invention relates to an electromechanical actuator comprising a stacked assembly (1) consisting of a ceramic base material having electromechanical properties and electrodes (2), and a ceramic insulating layer (5) for use in humid environments. To ensure a long service life of the actuator under conditions of increased electromechanical expansion, according to the invention, the ceramic insulating layer (5) has a smaller average grain size than the ceramic base material. Another aspect of the invention relates to a method for manufacturing an actuator having a ceramic insulating layer and a method for operating such an actuator.

The application provides an electrically unlocked landing gear lower lock thrust spring actuating cylinder and a movement method, the actuating cylinder integrates lower lock thrust locking function and electrically unlocked function, and comprises a static end lug, a motor, a speed reducer, a static cylinder, a screw rod, a screw nut, a screw nut limiting bolt, a thrust spring, a sliding cylinder and a sliding end lug; a linear electromechanical actuator is combined with the landing gear lower lock thrust spring actuating cylinder; in the process of bearing load, the landing gear, the thrust spring outputs thrust to the landing gear lock rod through the actuator lug, and the landing gear lock rod is locked in the thrust locking function, and the contact between the two lock rods is not loosened; in the process of unlocking the lower lock in the ground state, the landing gear lock rod is outputted with pulling force through the lug by the length limiting of the electric driving device and the actuating cylinder, and the deflection between the two lock rods is changed; the landing gear realizes the folding function under the driving of the landing gear folding actuator.

This invention provides a method and system for anomaly detection of electromechanical actuators based on cyber-physical fusion, belonging to the field of computer data processing technology. It integrates physical mechanisms with a dynamic priority generation mechanism based on random exploration, significantly improving the sensitivity of anomaly detection and the efficiency of system resource utilization while ensuring comprehensive detection. By constructing a deep fusion framework of physical mechanism models and data-driven models, this invention solves the problems of resource waste and detection blind spots under traditional fixed or polling strategies, significantly improving the efficiency of system resource utilization and the real-time response capability of detection. It introduces a closed-loop control process of resource idle prediction and dynamic supplementary inspection, actively recovering computing resources saved from healthy data sources and immediately reinvesting them in other high-risk potential fault points, achieving dynamic expansion of the detection coverage. This enhances the system's robustness in dealing with concurrent anomalies and complex operating conditions, achieving a synergistic improvement in detection comprehensiveness and efficiency.

The invention relates to a linear electro-mechanical actuator assembly (100) for a working equipment (200), comprising: a translation assembly (10) including a rotatable part (12) and a linearly movable part (14) connected to each other to translate a rotating movement of the rotatable part (12) to a linear movement of the linearly movable part (14); and a drive assembly (20) arranged to provide the rotating movement of the rotatable part (12) of the translation assembly (10); wherein the drive assembly (20) comprises a first electric motor (21), a second electric motor (22) and a planetary gear assembly (40) connected to the rotatable part (12) of the translation assembly (10), wherein the actuator assembly (100) further comprises a control unit (110) configured to control the drive assembly (20) based on a determined load on the translation assembly (10) and a desired speed of the linear movement of the translation assembly (10) so as to optimize the efficiency of the first and second electric motor (21;22).

A system for intelligent lubrication control in a high-speed mechanical transmission, the system comprising: a transmission housing enclosing a plurality of meshing gears mounted on rotating shafts and supported by bearing units; a plurality of sensor units physically mounted at predetermined locations within the transmission housing near gear engagement surfaces, bearing raceways, and shaft journals, each sensor unit comprising at least one temperature sensor, at least one vibration sensor, and at least one speed sensor, as well as an associated signal conditioning circuit configured to generate conditioned electrical signals representing operating parameters;a data acquisition module electrically connected to the plurality of sensor units and comprising an analog-to-digital conversion circuit configured to digitize the processed electrical signals; a hardware-based control unit comprising a microcontroller, a field-programmable gate array, and associated memory and input / output circuitry, wherein the control unit is configured to receive the digitized signals and generate control outputs based on predetermined threshold conditions; a lubricant supply system comprising a variable displacement pump driven by an electromechanical actuator, a plurality of electronically actuated microvalves arranged along a distributed lubricant network, and a plurality of lubrication channels formed in the gearbox housing and terminating at targeted lubrication points;and a multitude of flow control nozzles configured to direct lubricant to selected areas of the multitude of meshing gears and bearing units, the control unit being electrically coupled to the variable displacement pump and the multitude of electronically actuated microvalves to control lubricant flow rate, pressure and distribution depending on the operating parameters.

This invention relates to the field of wind tunnel technology, and in particular to a self-redundant multi-actuator system for a semi-flexible wall nozzle section in a wind tunnel. The system includes multiple sets of self-redundant actuators arranged laterally side-by-side on a single-sided profile wall of the semi-flexible wall nozzle section in a transonic wind tunnel. A hydraulic control unit is connected to the self-redundant actuators to adjust their maximum output power and achieve hydraulic self-locking. It can also selectively activate or deactivate the redundancy capability of the actuators according to operational requirements. A constant-pressure oil source unit is connected to the hydraulic control unit to supply oil to the self-redundant actuators and provide power compensation. This invention features high energy efficiency, strong anti-pollution capability, high power density, heterogeneous self-redundancy capability, and high reliability. It also combines the precision positioning characteristics of electromechanical actuators with the load adaptability of a hydraulic system, enabling direct and precise shaping of large-size semi-flexible wall nozzle profiles.

A steering device for a motor vehicle, in particular a “steer-by-wire” steering device, comprises a steering wheel, which is able to act on a steering sensor for measuring the rotation angle position of the steering wheel, an electromechanical actuator, which is able to act on a rack for steering wheels, and an electronic controller, which is adapted to detect the steering wheel angle position and to control the electromechanical actuator, wherein the steering device further comprises a feedback actuator acting on the steering wheel, wherein the controller is adapted to measure natural oscillations of the motor vehicle and to apply them with a corresponding amplitude to the feedback actuator.

The invention relates to a system for controlling a heating valve in a room of a building, comprising an electromechanical actuator (12) for adjusting the flow rate of the heating valve, at least one room climate sensor (21) for recording room climate data, an acoustic sensor (22) for recording ambient noise, and a control unit (14) for controlling the actuator (12), wherein the system has an evaluation unit (24) for evaluating sensor data, which is signal-connected to the acoustic sensor (22) for evaluating the recorded ambient noise, and wherein the control unit (14) is signal-connected to the evaluation unit (24) in order to control the actuator (12) depending on the ambient noise detected by the acoustic sensor (22).The invention is characterized in that the evaluation unit (24) comprises a data storage device (25) and is configured to determine specific noise signatures based on the detected ambient noise, to compare these with noise signatures stored in the data storage device (25), and to generate an evaluation signal that is associated with one of the following environmental conditions: a) an open window located in the room, in particular where the window is open to an outside environment, b) an open door located between two rooms, c) hydraulically induced noise emissions at the heating valve, and d) the insulation value range of a window located in the room. Furthermore, the invention relates to a control method.

An electromechanical actuator for driving a movable closure or sun protection screen includes a motor, a control board, a gear reduction assembly and a connector for connecting to a power supply source. The connector includes eight electrical contacts, the connector being in particular an RJ45 connector, for supplying power to the actuator and transmitting data from an Ethernet network. The motor is a synchronous motor including a wound stator and a rotor with permanent magnets, the stator winding being designed to withstand a voltage of 46V to 57V, in particular a voltage of 48V.

Method for controlling a motorized drive device for a shading device of a shutter, shading, or solar protection system. Method for controlling a motorized drive device (5) for a shading device (3) of a shutter, shading, or solar protection system (100) comprising a screen (2) that can be rolled up on a winding tube (4), the screen (2) having a permeability to solar radiation dependent on the intensity of a mechanical tension stress applied to the screen (2) by the motorized drive device (5), the motorized drive device (5) comprising an electromechanical actuator (11) intended to be assembled with the rollable screen (2), the control method comprising: - a first step (S110) of measuring a first temperature or estimating the first temperature or obtaining the first temperature,- a second step (S120) of measuring, estimating, or obtaining a first brightness level; - a third step (S130) of calculating a control setpoint for the motorized drive device (5) in order to obtain a permeability defined according to a rule based on the first temperature and the first brightness level; and - a fourth step (S140) of applying the control setpoint, the rule defining permeability values ​​that decrease with temperature and decrease with brightness. Figure for the abstract: 4,

The invention relates to a method for controlling the operation of an electromechanical actuator, which comprises a step of winding (E100) a screen, from a lowered end-of-travel position of a bar or from a position of the bar located between the lowered end-of-travel position and a breakage position of the arms, and, during the winding step (E100), a first step of controlling (E11) the actuator according to a rotational speed ramp (V) from a first rotational speed setpoint value (V1) of an output shaft of the actuator up to a second rotational speed setpoint value (V2) of the output shaft, strictly greater than the first setpoint value, so as to cross the breakage position of the arms at a rotational speed value (Vc) of the output shaft that is between the first and second setpoint values (V1, V2).

The disclosure relates to a linear electro-mechanical actuator assembly (100) for a working equipment (200), comprising: a translation assembly (10) including a rotatable part (12) and a linearly movable part (14) connected to each other to translate a rotating movement of the rotatable part (12) to a linear movement of the linearly movable part (14); and a drive assembly (20) arranged to provide the rotating movement of the rotatable part (12) of the translation assembly (10); wherein the drive assembly (20) comprises a first electric motor (21), a second electric motor (22) and a planetary gear assembly (40) connected to the rotatable part (12) of the translation assembly (10), wherein the actuator assembly (100) further comprises a control unit (110) configured to control the drive assembly (20) based on a determined load on the translation assembly (10) and a desired speed of the linear movement of the translation assembly (10) so as to optimize the efficiency of the first and second electric motor (21;22).

A method for determining the operating state of a motorized drive device for a shading device in a shading installation. A method for determining the operating state of a motorized drive device includes the steps (E140) of selecting an electromechanical actuator and (E160) a battery, as well as the steps (E170) of determining a current profile consumed during the movement of a shading device screen, (E200) a battery state of charge value, (E210) a voltage profile delivered by the battery during the movement of the shading device screen, and (E220) the operating state of the motorized drive device. Figure 4 is shown for the abstract.

Electromechanical actuation systems and related methods of operation are provided. A method of controlling an electromechanical actuator in response to an input command signal at an input terminal involves determining a commanded actuation state value based on a characteristic of the input command signal, generating a driver command signal based on the commanded actuation state value and an actuator type associated with the electromechanical actuator, and operating driver circuitry in accordance with the driver command signal to provide an output signal at an output terminal coupled to the electromechanical actuator.

An electromechanical actuator assembly (EMA) for use with a reclinable passenger seat. The EMA includes a housing, an electric motor, and an epicyclic gearbox including first and second ring gears. In the event of power loss, the second ring gear can be decoupled from the first ring gear to permit relative rotation, for instance to manually return the reclined seat to upright, by a mechanical override mechanism including first and second spring-loaded shoot bolts coupled to the first ring gear, a displaceable plate engaging one end of the first and second spring-loaded shoot bolts, and a manual release pin coupled to the displaceable plate. In use, the manual release pin is moveable axially to a position in which the displaceable plate displaces toward the first ring gear to decouple the first and second ring gears.

A method for controlling the operation of an actuator comprises a step (E20) of electrically activating a motor. After step (E20), the method comprises a step (E30) of starting, from a zero rotational speed (V0), a shaft of the motor, so as to reach a predetermined rotational speed minimum threshold value (Smin) during a starting phase (Pd). After the minimum threshold value (Smin) has been reached, the method comprises a first step (E40) of controlling the shaft of the motor from the minimum threshold value (Smin) to a minimum rotational speed setpoint (Vmin). After the minimum rotational speed setpoint (Vmin) has been reached and a predetermined period of time (ΔtPd) of the starting phase (Pd) has elapsed, the method comprises a second step (E60) of controlling the shaft of the motor at a demanded operating rotational speed setpoint (Vn), starting from the minimum rotational speed setpoint (Vmin).

The application belongs to the technical field of electromechanical actuators, and provides a dual-mode electromechanical actuator based on a planetary roller screw pair. The actuator comprises a planetary roller screw pair and a reverse planetary roller screw pair sharing a redundant screw, which respectively constitute a physically isolated main drive chain and a standby drive chain. The main drive chain drives the redundant screw to rotate through a main motor, so that the drive nut outputs linearly; the standby drive chain drives the drive nut to rotate through a standby motor, so that the redundant screw moves axially, and then drives the drive nut to output. Through the cooperation of displacement sensors and encoders, the system can automatically and undisturbedly switch to the standby chain when the main chain fails, and the output speed is continuous. The application completely eliminates the single-point failure risk of traditional actuators, realizes redundant driving with high reliability and high safety, and is particularly suitable for high-demand fields such as aerospace.

An electromechanical actuator and a shutter device comprising such an electromechanical actuator. An actuator includes a spring brake (25). The spring brake (25) comprises a helical spring (48), a drum (49), an input member (50) comprising a drive tooth (68) and a spacer (84), an output member (51), and a cover (52). The input member (50) and the cover (52) are fastened to each other by means of fasteners (85) by elastic snap-fit. A first fastener (85) is provided on a first inner face (68c) of the drive tooth (68). A second fastener (85) is provided on a second inner face (84c) of the spacer (84). A first tab (106) of the hood (52) is arranged opposite the first inner face (68c) of the drive tooth (68). In addition, a second tab (106) of the hood (52) is arranged opposite the second inner face (84c) of the spacer (84).Figure for the abbreviation: Figure 10.