Abstract: A composite motor having high-precision positioning, comprising: a housing (1), a rough positioning assembly, a hollow output shaft (2), a fine positioning assembly, a power switching apparatus and a controller (6). A stepper motor (3) in the rough positioning assembly is responsible for rough positioning of the composite motor, an annular travelling wave ultrasonic motor in the fine positioning assembly is responsible for tail end fine positioning of the composite motor, and the controller (6) implements power output switching between the annular travelling wave ultrasonic motor and the stepper motor (3). The composite motor effectively solves the problem that annular travelling wave ultrasonic motors which operate continuously for a long time have a short service life, and ensures high-precision positioning while also extending motor service life.

Abstract: A control device for a vibration-type actuator includes a control unit including first and second output units. The first output unit includes a first learned model subjected to machine learning in such a way as to output a first control amount for causing the contact body to relatively move with respect to the vibrator. The second output unit includes a second learned model subjected to machine learning in such a way as to output a second control amount, which is data of the same data format as that of the first control amount. The control unit updates parameters of the first learned model and parameters of the second learned model based on a control deviation, which is a difference between the first control amount and the second control amount output within the same sampling period as that of the first control amount.

Abstract: A load control device coupled between an AC power source and an electrical load may operate in a three-wire mode or a two-wire mode based on whether the load control device is connected to a neutral side of the AC power source. The load control device may further comprise first and second zero-cross detect circuits to be respectively used in the two-wire mode or the three-wire mode, and a neutral wire detect circuit configured to generate a neutral-wire detect signal indicating whether the load control device is connected to the neutral side of the AC power source. A control circuit of the load control device may determine whether the load control device should operate in the two-wire mode or in the three-wire mode in response to the neutral-wire detect signal.

Abstract: A vibratory actuator includes a vibration member, a contact member, and a pressure member. The vibration member includes an elastic member, having protrusions. The contact member is in contact with the elastic member and moves in a direction relative to the vibration member. The pressure member pressurizes the vibration member and the contact member. Each of the protrusions includes a first contact surface in contact with the contact member. The contact member has a second contact surface made of metal sintered material and in contact with the vibration member. A ratio of a maximum amount of depression on the second contact surface in the direction of pressurization by the pressure member to a width of the first contact surface in a direction perpendicular to the direction of movement of the contact member relative to the vibration member and the direction of pressurization by the pressure member is 0.05% or less.

Abstract: The present disclosure relates to a linear drive, including: an actuator unit with at least one actuator; two guide elements and a movement element, wherein the movement element is displaceable along both guide elements by a movement generated by the actuator unit as a result of a stick-slip effect. In order to allow a more accurate displacement of the movement element in a compact design of the linear drive, the movement element can be brought into engagement with each of the two guide elements by static friction in order to be displaced along the two guide elements as a result of the stick-slip effect.

Abstract: A magnetically-driven electricity-producing generator having an anti-lock assembly generates electricity indicative of a full pulse wave environment while creating a repulsive force that reduces the force necessary to rotate the shaft. The generator includes three rotor assemblies, each having three longitudinally extending rotor magnets oriented such that outwardly facing poles establish a N-S-N pattern that, when passed in proximity to a corresponding coil pack, produces electricity having a full pulse wave form. The magnetic anti-lock device utilizes opposing magnets to reduce the varying force required to rotate the shaft and increases efficiency of the rotating shaft. The magnetic anti-lock device includes at least one inner magnet attached to the rotating shaft and at least one outer magnet fixed in position relative to the rotating shaft. The inner magnet passes the outer magnet each time the shaft rotates creating a repulsive force that reduces the force necessary to rotate the shaft.

Abstract: An electric motor includes a stator including four split cores, and a rotor having four magnetic poles. Each of the split cores includes a yoke and a tooth. An angle ?1 [degree] formed by a side surface of the tooth and a side surface of the yoke on an inner side in a radial direction of the stator satisfies 90 degrees ??1<180 degrees.

Abstract: A contact member that makes it possible to reduce variations in characteristics of individual vibration actuators. The contact member is in contact with a vibration member. The contact member has a sintered body of metal powder as a base material. A contact surface of the sintered body, which is in contact with the vibration member, is formed by impregnated resin portions as pore portions of the sintered body in which resin has been impregnated, and non-impregnated as pore portions of the sintered body in which the resin has been impregnated. A ratio of the impregnated resin portions with respect to an entirety of the contact surface is 2% or more and 15% or less, and a ratio of the non-impregnated pore portions with respect to the entirety of the contact surface is 3% or more.

Abstract: The invention relates to an adjustment device (1), comprising at least two linear stages (2, 3), which are arranged next to each other and which are fixedly connected to each other (6) by means of one of the adjustment sections (5) of each of the linear stages such that an adjustment movement of one linear stage can be transferred to the adjacent linear stage, wherein one linear stage is designed to bring about an increase in the distance between the adjustment sections arranged on said linear stage as a result of actuation of the adjustment element and an adjacent linear stage is designed to bring about a decrease in the distance between the adjustment sections arranged on said linear stage as a result of actuation of the adjustment element so that a displacement of the adjustment device can be realized, which displacement corresponds to the sum of the amounts of the changes in the distance between the adjustment sections of the linear stages.

Abstract: A controller is capable of reducing time required to stop a control target at a target stop position as a final stop position. The controller drives a vibration element including a piezoelectric element by an AC signal to thereby move a contact body, in contact with the vibration element, relative to the vibration element. The controller controls a pulse duty cycle of a signal converted to the AC signal based on a difference between a target stop position, which is a final stop position of the contact body, and a current position of the contact body, and an actual speed of the contact body.

Abstract: The apparatus consists of a highly conductive contact disc member preferably an annular circular disc that is attached rigidly to a shaft member with a shaft member collar to rotates freely with the shaft member on a pair of bearings (or bushes), in a pair of housing members. The contact disc member has an even number of piezoelectric crystals attached radially to the circumferential contact disc member electrical contacts to form a symmetric array. An equal number of equal massive members are attached to the other ends of the piezoelectric crystals, again to form, a symmetric array about the rotation axis of the shaft member. Each of the massive members has the same weight for balance. Thus, each massive member is held unto the contact disc member's circumference by a piezoelectric crystal. Each massive member has a diametrically opposite massive member that can balance its weight.

Abstract: The present invention provides a driving apparatus of a flight object, the driving apparatus comprising: a support member rotatably installed inside a flight object body; a first rotation actuating part installed on the support member; a second rotation actuating part installed on the first rotation actuating part in a direction intersecting with the first rotation actuating part, and a magnetic body rotating vertically and horizontally by the first and the second rotation actuating part, wherein the magnetic body includes: a hemisphere rotation body installed on the second rotation actuating part; a current body installed inside the hemisphere rotation body and supplied electronic currents; a first pole magnetic body installed in one side of the current body; a second pole magnetic body installed in the other side, and a connection part connecting between the first and the second pole magnetic body.

Abstract: A micro-displacement amplifying apparatus comprises two sets of asymmetrical amplifying structures; each set of asymmetrical amplifying structure comprises a plurality of asymmetrical amplifying units connected in series by flexible hinges; the asymmetrical amplifying unit is used for amplifying a micro-displacement; the two sets of asymmetrical amplifying structures are in opposite positions and overlap with each other; the input end and output end are coupled to the asymmetrical amplifying unit by a flexible hinge, respectively; the input end is used for inputting the micro-displacement to the asymmetrical amplifying unit, and the output end is used for outputting the amplified displacement; the two contacting input ends are fixed and coupled to each other, and the two contacting output ends are fixed and coupled to each other. The present disclosure further discloses an amplification method of the micro-displacement amplifying apparatus.

Abstract: A driving assembly is provided, including a transmission element and a first driving source. The transmission element has a first connecting point. The first driving source outputs a first driving force to the transmission element. The first driving source is at least partially fixedly connected to the transmission element at the first connecting point.

Abstract: A vibration driving device that improves controllability in low speed driving. The vibration driving device includes a vibration actuator that includes a vibrator that has an elastic member and an electro-mechanical energy conversion element, a contact member that contacts the vibrator, and a control device that controls drive of the vibration actuator. The control device includes a speed detection unit that detects speed information showing relative speed of the vibrator and the contact member, and an adjustment unit that decreases amplitude of vibration excited in the vibrator in a case where the speed detection unit detects that a state where the vibration actuator does not operate approximately and a state where the vibration actuator operates at a speed faster than a target driving speed occur alternately after starting to drive the vibration actuator.

Abstract: Disclosed is a piezoelectric inertial drive stage including a piezoelectric inertial driver, a slider and a holder. The driver includes a mounting portion for the mounting on the holder, a friction portion coupling to the slider, a flexure portion between the mounting portion and friction portion, a piezoelectric element with a first end bonded to the mounting portion and a second end bonded to a movement portion, the movement portion transferring the motion of the piezoelectric element to the friction portion to drive the slider.

Abstract: Provided is a novel actuator that can easily achieve movement with multiple degrees of freedom. An actuator includes a flexible electrode, a first base electrode disposed to face the flexible electrode on the Y-axis and provided with a first insulating layer on an opposite face, a second base electrode disposed to face the flexible electrode on the X-axis and provided with a second insulating layer on an opposite face, and a first output member and a second output member adapted to be displaced according to deformation of the flexible electrode. A first space is formed between the first insulating layer and the flexible electrode, in which the flexible electrode deforms toward the first insulating layer by an applied voltage. A second space is formed between the second insulating layer and the flexible electrode, in which the flexible electrode deforms toward the second insulating layer by an applied voltage.

Abstract: A lens barrel includes: an electromechanical conversion element; an elastic body having a joining surface, a drive surface, and grooves; a motion member rotating by vibration wave of the drive surface; a rotating ring having a recess part and rotating by rotation of the motion member; a moving ring engaged to the recess part and moving to an optical axis direction by rotation of the rotating ring; and a lens held in the moving ring; wherein the element is made of a material having sodium potassium niobate, potassium niobate, sodium niobate or barium titanate, wherein a value of T/(B+C) is within a range of from 1.3 to 2.8 when: length from the drive surface to a base unit of the groove is defined as T; length from the base unit of the groove to the joining surface is defined as B; and thickness of the element is defined as C.

Abstract: A vibration type motor includes a limiter configured to limit a distance between a movable guide member and a fixed guide member. The limiter has first, second, and third limiting areas. The first limiting area is disposed between a first roll member and a second roll member in one direction. The second limiting area is disposed on the same side as the second roll member with respect to the first roll member and distant from the second roll member in the one direction. The third limiting area is disposed on an opposite side of the second roll member with respect to the first roll member in the one direction. A length of the first limiting area in another direction orthogonal to the one direction is equal to or longer than that of each of the second limiting area and the third limiting area in the one direction.

Abstract: A vibration actuator is capable of reducing differences in vibration phase and vibration amplitude without raising a voltage of a drive circuit when driving a contact member using a plurality of vibrators connected in series. The vibration actuator includes a vibrator device and a contact member that moves relative to the vibrator device. The vibrator device includes transformers of which primary coils are connected in series, and vibrators that are respectively connected in parallel to secondary coils of the transformers.