Abstract: The present disclosure discloses an actuator, comprising a first torsion spring body and a second torsion spring body, each of the first torsion spring body and the second torsion spring body comprising: an inner ring; an outer ring; and a plurality of elastic units, connected in parallel between the inner ring and the outer ring. An outer ring of the first torsion spring body and an outer ring of the second torsion spring body are rigidly connected, and an inner ring of the first torsion spring body and an inner ring of the second torsion spring body are aligned with each other. The actuator further includes a motor element and a braking element. The motor element is for providing an output torque, and is connected with the inner ring of the first torsion spring body. The braking element is for providing a braking torque, and is connected with the inner ring of the second torsion spring body.

Abstract: The present disclosure discloses a hybrid implant system for fixing and repairing orthopedic fracture and a manufacturing method therefor. The hybrid implant system comprises an implant body having holes on both ends and a locking part configured for attaching the implant body to a broken bone through the holes. The hybrid implant system further comprises a healing assembly made from a material promoting healing of the bone. The implant body has at least one window on a side, the at least one window is aligned with a broken location of the bone, and the healing assembly is inserted into the window in a self-locking manner towards an interior of the implant body.

Abstract: The present application discloses a method of producing a knee replacement implant, an implant for knee replacement formed by using the method, and a knee replacement implant. The method includes: defining a hip center, a knee center, an ankle center and a posterior femoral condylar axis of a lower limb; generating femoral geometric parameters and tibial geometric parameters, the femoral geometric parameters and the tibial geometric parameters being measured in relation to the hip center, the knee center, the ankle center and the posterior femoral condylar axis; collecting anthropometric data from a defined population using the femoral geometric parameters and the tibial geometric parameters; and creating a femoral component and/or a tibial component using the collected anthropometric data.

Abstract: An RFID antenna for a POS device has a slender, single-sided, flexible substrate with a first end and a second end. Multiple conductors extend along the substrate, from the first end to the second end. A flexible covering layer is attached to the substrate and covers the conductors. The substrate is wrapped to superimposed the ends of the substrate. A connector connects the ends of the conductors on the first end of the substrate to the ends of the conductors on the second end of the substrate whereby the plurality of conductors form an antenna in the form of a continuous helical coil.

Abstract: The present disclosure discloses an actuator, comprising a first torsion spring body and a second torsion spring body, each of the first torsion spring body and the second torsion spring body comprising: an inner ring; an outer ring; and a plurality of elastic units, connected in parallel between the inner ring and the outer ring. An outer ring of the first torsion spring body and an outer ring of the second torsion spring body are rigidly connected, and an inner ring of the first torsion spring body and an inner ring of the second torsion spring body are aligned with each other. The actuator further includes a motor element and a braking element. The motor element is for providing an output torque, and is connected with the inner ring of the first torsion spring body. The braking element is for providing a braking torque, and is connected with the inner ring of the second torsion spring body.

Abstract: The present disclosure discloses a hybrid implant system for fixing and repairing orthopedic fracture and a manufacturing method therefor. The hybrid implant system comprises an implant body having holes on both ends and a locking part configured for attaching the implant body to a broken bone through the holes. The hybrid implant system further comprises a healing assembly made from a material promoting healing of the bone. The implant body has at least one window on a side, the at least one window is aligned with a broken location of the bone, and the healing assembly is inserted into the window in a self-locking manner towards an interior of the implant body.

Abstract: The present application discloses a method of producing a knee replacement implant, an implant for knee replacement formed by using the method, and a knee replacement implant. The method includes: defining a hip center, a knee center, an ankle center and a posterior femoral condylar axis of a lower limb; generating femoral geometric parameters and tibial geometric parameters, the femoral geometric parameters and the tibial geometric parameters being measured in relation to the hip center, the knee center, the ankle center and the posterior femoral condylar axis; collecting anthropometric data from a defined population using the femoral geometric parameters and the tibial geometric parameters; and creating a femoral component and/or a tibial component using the collected anthropometric data.

Abstract: An RFID antenna for a POS device has a slender, single-sided, flexible substrate with a first end and a second end. Multiple conductors extend along the substrate, from the first end to the second end. A flexible covering layer is attached to the substrate and covers the conductors. The substrate is wrapped to superimposed the ends of the substrate. A connector connects the ends of the conductors on the first end of the substrate to the ends of the conductors on the second end of the substrate whereby the plurality of conductors form an antenna in the form of a continuous helical coil.

Abstract: Systems and methods facilitate a search and identify documents and associated metadata reflecting content of the documents. In one implementation, a method receives a query comprising a set of search terms, identifies a stored document in response to the query, and determines a score value for the retrieved document based on a similarity between one or more of the query search terms and metadata associated with the identified document. The method locates the identified document in a citation network of baseline query results, the citation network comprising a first set of documents that cite to the identified document and a second set of documents cited to by the identified document. The method further determines a new score value of the identified document as a function of the score value and a quantity and a quality of documents within the first and second set of documents.

Abstract: An apparatus includes a sensorless field-oriented control (FOC) motor controller. The motor controller includes a pulse width modulation (PWM) controller configured to generate PWM signals and to provide the PWM signals to an inverter. The motor controller also includes an angle sampler configured to receive a commanded voltage angle signal and to provide the commanded voltage angle signal as an output signal in response to a triggering event. The triggering event is based on a voltage or a current associated with an input or an output of the inverter. The motor controller further includes a first combiner configured to combine (i) a feed-forward voltage angle signal and (ii) a second signal based on the output signal. The first combiner is configured to generate the commanded voltage angle signal. In addition, the motor controller includes a second combiner configured to combine a feed-forward voltage amplitude signal and the second signal.

Abstract: A method for driving a motor having a plurality of phases is provided. Initially, first, second, and third intervals for a pulse width modulation (PWM) period from first and second voltage commands are generated. The first and second voltage commands correspond to a voltage vector for the motor, and the voltage vector has an associated sector. A conversion formula is then determined for the first, second, third intervals based on the associated sector for the voltage vector. Using the conversion formula and the first, second, and third intervals, fourth, fifth, and sixth intervals are generated, and a set of PWM signals for the PWM period is generated from the fourth, fifth, and sixth intervals. The motor is then driven with the second set of PWM signals, and a current traversing the plurality of phases with a single shunt is measured.

Abstract: Systems and methods facilitate a search and identify documents and associated metadata reflecting content of the documents. In one implementation, a method receives a query comprising a set of search terms, identifies a stored document in response to the query, and determines a score value for the retrieved document based on a similarity between one or more of the query search terms and metadata associated with the identified document. The method locates the identified document in a citation network of baseline query results, the citation network comprising a first set of documents that cite to the identified document and a second set of documents cited to by the identified document. The method further determines a new score value of the identified document as a function of the score value and a quantity and a quality of documents within the first and second set of documents.

Abstract: A method for driving a motor is provided. Pulse width modulation (PWM) signals are generated from a voltage signal and a commanded angle signal, which drives a motor with multiple phases. A motor current from a motor is measured with a single shunt and converted into a digital signal. Based on the digital signal and the commanded angle signal, direct-axis and quadrant-axis currents for the motor can be determined, and the voltage signal and the commanded angle signal can be adjusted based at least in part on the direct-axis and quadrant-axis currents.

Abstract: An method for driving a motor is provided. A plurality of pulse width modulation (PWM) signals are generated from a commanded voltage signal and a commanded angle signal, and these PWM signal are used to drive a motor (which has a plurality of phases). Currents through the phases of the motor are measured, and a Park transformation is performed on the measured currents to determine a projection current measurement. Based at least in part on the projection current measurement, the adjusting the commanded voltage signal and the commanded angle signal can be adjusted.

Abstract: An apparatus includes a sensorless field-oriented control (FOC) motor controller. The motor controller includes a pulse width modulation (PWM) controller configured to generate PWM signals and to provide the PWM signals to an inverter. The motor controller also includes an angle sampler configured to receive a commanded voltage angle signal and to provide the commanded voltage angle signal as an output signal in response to a triggering event. The triggering event is based on a voltage or a current associated with an input or an output of the inverter. The motor controller further includes a first combiner configured to combine (i) a feed-forward voltage angle signal and (ii) a second signal based on the output signal. The first combiner is configured to generate the commanded voltage angle signal. In addition, the motor controller includes a second combiner configured to combine a feed-forward voltage amplitude signal and the second signal.

Abstract: An embodiment of the present invention discloses a co-processing acceleration method, including: receiving a co-processing request message which is sent by a compute node in a computer system and carries address information of to-be-processed data; according to the co-processing request message, obtaining the to-be-processed data, and storing the to-be-processed data in a public buffer card; and allocating the to-be-processed data stored in the public buffer card to an idle co-processor card in the computer system for processing. An added public buffer card is used as a public data buffer channel between a hard disk and each co-processor card of a computer system, and to-be-processed data does not need to be transferred by a memory of the compute node, which avoids overheads of the data in transmission through the memory of the compute node, and thereby breaks through a bottleneck of memory delay and bandwidth, and increases a co-processing speed.

Abstract: A method for driving a motor is provided. Pulse width modulation (PWM) signals are generated from a voltage signal and a commanded angle signal, which drives a motor with multiple phases. A motor current from a motor is measured with a single shunt and converted into a digital signal. Based on the digital signal and the commanded angle signal, direct-axis and quadrant-axis currents for the motor can be determined, and the voltage signal and the commanded angle signal can be adjusted based at least in part on the direct-axis and quadrant-axis currents.

Abstract: A method for driving a motor having a plurality of phases is provided. Initially, first, second, and third intervals for a pulse width modulation (PWM) period from first and second voltage commands are generated. The first and second voltage commands correspond to a voltage vector for the motor, and the voltage vector has an associated sector. A conversion formula is then determined for the first, second, third intervals based on the associated sector for the voltage vector. Using the conversion formula and the first, second, and third intervals, fourth, fifth, and sixth intervals are generated, and a set of PWM signals for the PWM period is generated from the fourth, fifth, and sixth intervals. The motor is then driven with the second set of PWM signals, and a current traversing the plurality of phases with a single shunt is measured.

Abstract: An method for driving a motor is provided. A plurality of pulse width modulation (PWM) signals are generated from a commanded voltage signal and a commanded angle signal, and these PWM signal are used to drive a motor (which has a plurality of phases). Currents through the phases of the motor are measured, and a Park transformation is performed on the measured currents to determine a projection current measurement. Based at least in part on the projection current measurement, the adjusting the commanded voltage signal and the commanded angle signal can be adjusted.

Abstract: Systems and methods facilitate a search and identify documents and associated metadata reflecting content of the documents. In one implementation, a method receives a query comprising a set of search terms, identifies a stored document in response to the query, and determines a score value for the retrieved document based on a similarity between one or more of the query search terms and metadata associated with the identified document. The method locates the identified document in a citation network of baseline query results, the citation network comprising a first set of documents that cite to the identified document and a second set of documents cited to by the identified document. The method further determines a new score value of the identified document as a function of the score value and a quantity and a quality of documents within the first and second set of documents.