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公开(公告)号：US11378061B2
公开(公告)日：2022-07-05
申请号：US15986980
申请日：2018-05-23
发明人： Alan H. Epstein
摘要： A rotor dynamics adjustment system includes a rotor system with at least one compressor section and at least one turbine section operably coupled to a shaft. The rotor dynamics adjustment system also includes one or more rotor system sensors configured to collect a plurality of sensor data from the rotor system, an electric motor operably coupled to the rotor system, and a controller. The controller is operable to monitor the one or more rotor system sensors while the rotor system is rotating. A dynamic motion of the rotor system is characterized based on the sensor data from the one or more rotor system sensors. A damping correction torque is determined to diminish the dynamic motion of the rotor system. The electric motor is commanded to apply the damping correction torque to the rotor system.
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公开(公告)号：US20220034775A1
公开(公告)日：2022-02-03
申请号：US17297455
申请日：2019-06-10
申请人： SHIMADZU CORPORATION
发明人： Tohru MATSUURA
摘要： Provided is a material testing machine (1) including: a load mechanism (12) that applies a load to a test object; a load measurement device that measures the load applied to the test object; and a control device (30) that performs a feedback control for the load mechanism (12) based on a deviation between a measurement value of the load and a target value of the load, in which a change in a physical quantity generated in the test object due to the load is measured, and the control device (30) includes a hunting detection unit (66) that detects hunting by comparing a frequency spectrum obtained by converting time-series data of the measurement value with a frequency spectrum obtained by converting the time-series data of the target value.
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公开(公告)号：US10851867B2
公开(公告)日：2020-12-01
申请号：US15249844
申请日：2016-08-29
发明人： Anupam J. Pathak , Dylan Owens
IPC分类号： G05B6/02 , F16F15/00 , A61B5/11 , A61B5/00 , A47G21/04 , G05B5/01 , A47G21/02 , A61B34/00 , G01C21/18 , A61F2/50
摘要： Systems and methods for tracking unintentional muscle movements of a user and stabilizing a handheld tool while it is being used are described. The method may include measuring, with a first inertial measuring unit (“IMU”), at least an orientation of a housing of the handheld tool, and measuring, with a second IMU, at least an orientation or an attachment arm extending from the housing of the handheld tool. The method may also include storing the orientation of the housing and the orientation of the attachment arm in a memory. Furthermore, the method may include controlling, with a processing logic, a first motion generating mechanism and a second motion generating mechanism to move the attachment arm relative to the housing based on the measured orientation of the housing and the measured orientation of the attachment arm to stabilize motion of a user-assistive device attached to a distal end of the attachment arm.
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公开(公告)号：US10704805B2
公开(公告)日：2020-07-07
申请号：US14453565
申请日：2014-08-06
发明人： Joe Powell , Lee Nelson , Hermon Alan Boyd
摘要： Systems, tools, and methods are presented that enable a circuit to introduce a random time delay before actuating a relay to start or stop a supply of electrical power to a heating element of a heating, ventilating, and air conditioning (HVAC) system. In one instance, the circuit includes a time-delay switch electrically connected to the relay. The time-delay switch has a random time delay before entering a closed state or open state. The relay is operable to start and stop a supply of electrical power to the heating element in response to the switch entering, respectively, the closed state and the open state. Other systems, tools and methods are presented.
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公开(公告)号：US10483894B2
公开(公告)日：2019-11-19
申请号：US14123622
申请日：2012-05-16
摘要： A control system for an electric motor (10) comprises a current sensing means (14) arranged to produce a current sensing output indicative of electric current in the motor, current control means (20) arranged to receive a current demand and to control voltages applied to the motor, and correction means (26) arranged to receive the current sensing output and the current demand, and use them to generate a correction signal. The current control means (20) is arranged to receive the correction signal and to use the correction signal to correct the voltages applied to the motor.
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公开(公告)号：US20180361573A1
公开(公告)日：2018-12-20
申请号：US15815583
申请日：2017-11-16
申请人： UBTECH Robotics Corp
发明人： Youjun Xiong , Gaobo Huang , Wenxue Xie
摘要： The present disclosure relates to an anti-shake method of robot and a robot thereof. The method includes: receiving at least one motion-controlling instruction from a main control unit, determining whether a servo performs the motion-controlling instruction, obtaining a target angle and a current angle of the servo upon determining the servo is not under a control of a main control unit, determining whether the target angle and the current angle is within a fault tolerance range, terminating the servo upon determining the target angle and the current angle is within the fault tolerance range. As such, the shaking of the robot may be avoided when the robot performs actions, so as to reduce power consuming and to extend stand-by time.
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公开(公告)号：US10133241B2
公开(公告)日：2018-11-20
申请号：US14874577
申请日：2015-10-05
摘要： Various methods and systems control the power of a process power supply by a control circuit with a controller and several control channels, wherein each control channel comprises an actual value and a target value of a control variable. The systems and methods specify target values of the control variables, determine the actual values of the control variables, determine a selected control channel with the assistance of a selection variable dependent upon the actual value, determine a selected control difference from the target value and the actual value of the selected control channel, and control the control loop with the selected control difference of the selected control channel.
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公开(公告)号：US10108152B2
公开(公告)日：2018-10-23
申请号：US15466975
申请日：2017-03-23
申请人： FANUC CORPORATION
发明人： Kazunori Iijima
摘要： A servo control device according to the present invention includes a speed command generation unit, a torque command generation unit, a speed detection unit, a speed control loop, a speed control gain setting unit for setting a speed control gain for the speed control loop, a sinusoidal disturbance input unit for performing a sinusoidal sweep on the speed control loop, a frequency characteristic calculation unit, and a gain adjustment unit. When the speed control loop has fallen into an oscillation state and has become unstable owing to the increased speed control gain, the speed control gain is reduced and the sinusoidal sweep is temporarily stopped. After the speed control loop is stabilized using the speed control gain which is lower than in the unstable state, the sinusoidal sweep is restarted.
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公开(公告)号：US10088810B2
公开(公告)日：2018-10-02
申请号：US15189105
申请日：2016-06-22
申请人： The Boeing Company
发明人： Steven Griffin
摘要： An example servo control system includes one or more components configured to be actuated for movement, a system controller including one or more processors for receiving feedback of the movement of the one or more components and for using the feedback within a control loop to cause an actuator to reduce error of the movement of the one or more components, and a tuned mass damper (TMD) physically connected to the one or more components. Parameters of the TMD are selected to add phase margin at a crossover frequency of the servo control system, and the TMD includes a mass coupled to the one or more components, a damper connected between the mass and the one or more components, and a spring component connected between the mass and the one or more components.
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公开(公告)号：US20180085919A1
公开(公告)日：2018-03-29
申请号：US15662724
申请日：2017-07-28
发明人： Kenji NAGAMATSU
CPC分类号： B25J9/1633 , B25J9/161 , B25J9/1641 , B25J9/1679 , B25J9/1694 , G05B5/01 , G05B2219/39241 , G05B2219/40582 , G05B2219/40597
摘要： A control device controlling a robot including a driving unit, a moving unit that is slidable along a predetermined track and a predetermined shaft that is slidably supported by the moving unit includes an instruction value calculating unit calculating an instruction value that drives the driving unit such that the moving unit is moved to a target position, an accelerating-speed calculating unit calculating an angular accelerating speed of when the instruction value changes, a gravity-center distance calculating unit calculating a gravity center distance, a correction instruction-value calculating unit calculating a correction instruction value by correcting the instruction value such that a position of the gravity center which is projected on the predetermined track approaches the target position, and a driving control unit controlling the driving unit based on the correction instruction value.
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