摘要:
Proposed is a motor drive apparatus driving first (140) and second (120) motors having first wirings (C1-C3) and second wirings (C4-C6), respectively, including a first inverter (10) including first switching elements (S11-S16), an alternating-current terminal of the first inverter being connected to a first terminal of each of the first wirings, a second inverter (20) including second switching elements (S21-S26), a first change-over switch (30) including third switching elements (S31-S33), first-side terminals thereof being connected to second terminals of the first wirings, respectively, and second-side terminals being connected together, a second change-over switch (40) including fourth switching elements (S41-S43), first-side terminals thereof being connected to the second terminals, respectively, and second-side terminals being connected to an alternating-current terminal of the second inverter, a third change-over switch (50) including fifth switching elements (S51-S53), first-side terminals thereof being connected to the alternating-current terminal, and second-side terminals being connected to the second wirings, respectively, and a controller (70) controlling turned-on and-off states of the first to fifth switching elements.
摘要:
Various embodiments disclosed herein relate to an electronic apparatus including a flexible display. According to an embodiment, an electronic apparatus including a flexible display may be provided, the electronic apparatus comprising: a first housing capable of sliding; a second housing; a flexible display which includes a first region mounted to one surface of the first housing and a second region extending from the first region, wherein the second region is at least partially accommodated inside the first housing or the second housing or exposed to the outside of the first housing or the second housing according to the sliding of the first housing; a driving part which is disposed in the second housing and includes a circuit that provides power for sliding the first housing; and a rail part including a rail which receives power from the driving part and moves along with the first housing when the first housing slides. The driving part includes: a pinion formed so as to engage with the rail of the rail part; and a plurality of motor modules including at least one motor disposed along the same rotation axis as the pinion. Various other embodiments may also be utilized.
摘要:
A synchronous motor drive device is a synchronous motor drive device that drives a plurality of synchronous motors connected in parallel to one another, and includes a power converter that converts power from a power source to supply the power to the plurality of synchronous motors, a first switch device that electrically connects or disconnects between the power converter and each of the plurality of synchronous motors, and a controller that, based on a higher order command, performs stability judgment processing of the plurality of synchronous motors, determines the number of synchronous motors to be driven and a drive speed from among the plurality of synchronous motors, selects a synchronous motor corresponding to the number of the synchronous motors from among the plurality of synchronous motors, controls the first switch device corresponding to the selected synchronous motor to electrically connect the power converter to the synchronous motor and to supply the power, and instructs, to the power converter, the drive speed of the synchronous motor to be driven.
摘要:
A system for controlling multiple actuators that are attached to a structure for moving and positioning the structure include a magnetic flux sensor in a motor of each actuator. The magnetic flux sensor senses a magnetic flux in an associated motor and generates an electrical signal that corresponds to the magnetic flux in the associated motor. The system also includes a control unit that receives the electrical signal from the magnetic flux sensor of each actuator. The control unit is configured to generate a drive command signal to each actuator that balances a torque applied to the structure by each actuator in response to the magnetic flux sensed in the motor of each actuator.
摘要:
Die Erfindung betrifft insbesondere eine elektrische Anordnung (1), die zum Ansteuern wenigstens zweier Elektromotoren (11, 12) wenigstens eine erste H-Brückenanordnung (1-1) und eine zweite H-Brückenanordnung (1-2) aufweist. Die elektrische Anordnung (1) umfasst einen ersten Elektromotor (11), der mit einem ersten Schaltelement (131), einem zweiten Schaltelement (132), einem dritten Schaltelement (141) und einem vierten Schaltelement (142) in der ersten H-Brückenanordnung (1-1) elektrisch verbunden ist. Dabei ist der erste Elektromotor (11) in einem ersten Brückenzweig (1-10) der ersten H-Brückenanordnung (1-1) angeordnet und über einen ersten Motorkontakt (111) an eine erste Halbbrücke (13) angeschlossen, wobei die erste Halbbrücke (13) das erste Schaltelement (131) und das zweite Schaltelement (132) umfasst. Über einen zweiten Motorkontakt (112) ist der erste Elektromotor (11) an eine zweite Halbbrücke (14) angeschlossen ist, die das dritte Schaltelement (141) und das vierte Schaltelement (142) umfasst. Die elektrische Anordnung (1) umfasst ferner einen zweiten Elektromotor (12), der in einem zweiten Brückenzweig (1-20) der zweiten H-Brückenanordnung (1-2) angeordnet ist und über einen dritten Motorkontakt (121) an eine dritte Halbbrücke (15) angeschlossen ist, wobei die dritte Halbbrücke (15) ein fünftes Schaltelement (151) und ein sechstes Schaltelement (152) umfasst. Dabei ist der zweite Elektromotor (12) über einen vierten Motorkontakt (122) derart an die erste Halbbrücke (13) angeschlossen, dass er mit dem ersten Schaltelement (131), dem zweiten Schaltelement (132), dem fünften Schaltelement (151) und dem sechsten Schaltelement (152) in der zweiten H-Brückenanordnung (1-2) elektrisch verbunden ist.
摘要:
A system includes a plurality of actuators configured to provide forces to an actuatable member to actuate the member between a first position and a second position during an actuation mode. The actuators are also configured to return the member from the second position to the first position during a retrace mode. The system also includes a controller configured to control the actuators. The controller is configured to identify a back electromotive force (BEMF) of each of the actuators during the retrace mode. The controller is also configured to responsively provide control signals to drive the actuators such that the forces provided by the actuators to the member during the actuation mode are substantially equal.
摘要:
Verfahren und System zum Ermitteln der Position eines ersten Motorteils eines Elektromotors relativ zu einem zweiten Motorteil des Elektromotors, wobei am ersten Motorteil an mehreren Stellen die von Magneten des zweiten Motorteils erzeugte oder zumindest beeinflusste Magnetfeldstärke ermittelt wird und daraus die relative Position des zweiten zum ersten Motorteils bestimmt wird, wobei die Magnetfeldstärke an mehreren Stellen des ersten Motorteils jeweils lokal ermittelt wird, wobei die Stellen in Bewegungsrichtung voneinander beabstandet sind, wobei jede Stelle zu einer von mindestens zwei Gruppen zugeordnet wird, wobei durch Mehrheitsentscheidung aus den zu einer Gruppe gehörenden ermittelten Werten ein jeweiliger Signalwert bestimmt wird, wobei aus den Signalwerten die Position bestimmt wird.