-
1.发明公开公开(公告)号：US20240329606A1
公开(公告)日：2024-10-03
申请号：US18588555
申请日：2024-02-27
Applicant: ABB Schweiz AG
Inventor： Elisabeth Lindell , Stefan Halen
IPC: G05B11/36
CPC classification number: G05B11/36
Abstract: A method of performing a circuit opening and closing operation in a power system having a first phase, a second phase), and a third phase, the method including a) opening only a reference phase among the first phase, the second phase and the third phase such that a reference current of the reference phase is interrupted at a first current zero crossing after the opening; b) opening the remaining phases after step a); c) closing only the reference phase and a phase lagging the reference phase by 120° simultaneously or essentially simultaneously at a closing phase angle of a phase to ground voltage of the reference phase of 320°±70° when the current zero crossing is a positive current zero crossing, or of 140°±70° when the current zero crossing is a negative current zero crossing; and d) closing the phase lagging the reference phase by 240° after step c).
-
公开(公告)号：US12030508B2
公开(公告)日：2024-07-09
申请号：US17320134
申请日：2021-05-13
Applicant: Ford Global Technologies, LLC
Inventor： Sanghyun Hong , Jianbo Lu
CPC classification number: B60W50/0098 , B66F9/063 , G01S17/89 , G05B11/36 , G05B13/048 , G05D1/0212 , G05D1/0248 , B60W2050/0011
Abstract: Scenario discriminative hybrid motion control for robots and methods of use are disclosed herein. A method may include determining a number of objects in a space, determining when a goal is within the space, and selectively switching between a plurality of control schemes based on the number of objects in the space and whether the goal is within the space. The plurality of control schemes including a model predictive control scheme, a simplified model predictive control scheme, and a proportional-integral-derivative scheme. Selectively switching between the plurality of control schemes reduces power consumption of an automated system compared to when the automated system utilizes only the model predictive control scheme.
-
公开(公告)号：US20240103459A1
公开(公告)日：2024-03-28
申请号：US18270271
申请日：2021-03-09
Applicant: OMRON CORPORATION
Inventor： Atsushi OGAWA , Yukio INAME
CPC classification number: G05B13/04 , G05B11/36 , G05B2219/39195 , G05B2219/39199
Abstract: A drive system includes an actuator that is driven by a motor to generate displacement, a driver that drives the motor, and a controller that gives a control instruction to the driver. The controller includes a model creation unit that creates a physical model based on displacement caused by application of an external load to the actuator and an instruction generating unit that generates a control instruction such that the actuator generates displacement according to the physical model.
-
公开(公告)号：US11913512B2
公开(公告)日：2024-02-27
申请号：US17058139
申请日：2019-05-13
Applicant: NANJING ESTUN AUTOMATION COMPANY
Inventor： Renkai Fan , Kaifeng Yang , Dandan Qi , Wei Qian , Bo Wu
IPC: G05B11/36 , F16F15/00 , B65G43/02 , G05B19/404
CPC classification number: F16F15/002 , B65G43/02 , G05B19/404 , F16F2228/04 , F16F2230/18 , G05B2219/39195
Abstract: A vibration suppression method for a servo motor and a load multistage drive system is provided. For a number N of fixed vibration frequencies and one vibration frequency varying with a load position existing in a multistage drive mechanism, a number of N+1 vibration suppression filters are adopted, and each filter is configured to eliminate a corresponding vibration frequency. Fixed vibration frequencies and a vibration frequency varying with a load position in a multistage drive system are measured by using an offline method, and the varied vibration frequencies are made into a two-dimensional table related to the load positions. The fixed vibration frequencies are eliminated by using fixed-frequency parameter vibration suppression filters; and the varied vibration frequencies are eliminated by using a variable-frequency parameter vibration suppression filter, and the vibration frequencies are obtained in real time according to the load positions and the two-dimensional table.
-
公开(公告)号：US11353830B2
公开(公告)日：2022-06-07
申请号：US16644547
申请日：2019-01-18
Applicant: OMRON Corporation
Inventor： Kenji Nakajima , Mamoru Egi
Abstract: A servo control method includes a step of adjusting a feedback gain used in feedback control of a controlled object, the feedback control being performed based on difference information between a target value concerning an instruction and a feedback signal from the controlled object, so that the controlled object is operated by following the instruction, and a step of adjusting a feedforward gain used in feedforward control of the controlled object after the adjustment of the feedback gain.
-
Patent Agency Ranking
公开(公告)号：US10853727B2
公开(公告)日：2020-12-01
申请号：US16486836
申请日：2019-02-05
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Eiki Kitagawa , Masato Ehara
Abstract: A machine learning system using a neural network to output an output value corresponding to values of operating parameters of the machine. When the value of an operating parameter of a machine is outside a preset range, the number of nodes of the hidden layer one layer before the output layer of the neural network is increased and training data obtained by actual measurement for a newly acquired value of an operating parameter of the machine is used to learn the weights of the neural network so that the difference between the output value changing in accordance with the values of the operating parameters of the machine and training data corresponding to the values of the operating parameters of the machine becomes smaller.
-
7.发明申请公开(公告)号：US20200238931A1
公开(公告)日：2020-07-30
申请号：US16775855
申请日：2020-01-29
Applicant: Robert Bosch GmbH
Inventor： Jochen Fassnacht , Tunan Shen
Abstract: A method for determining an electrical capacitance in an intermediate circuit of an electric drive system. The electric drive system includes at least one first electrical energy source, which feeds the intermediate circuit, a drive unit, which has an inverter and an electrical load, the inverter being electrically connected on the input side with the intermediate circuit and on the output side with the electrical load, and a DC voltage converter, which is electrically connected with the intermediate circuit and measures a voltage in the intermediate circuit by high frequency sampling. The electrical capacitance in the intermediate circuit is determined from the voltage in the intermediate circuit measured by the DC voltage converter. Also described is a motor vehicle, which includes an electric drive system for implementing the method.
-
公开(公告)号：US20200099221A1
公开(公告)日：2020-03-26
申请号：US16609522
申请日：2018-03-20
Applicant: GENERAL ELECTRIC TECHNOLOGY GMBH
Inventor： Camal Ait Mahrez , Guillaume Depreville
Abstract: The invention lies in the field of current stabilisation in a power generation system comprising a plurality of elementary power groups connected in parallel. It relates to a control system for regulating the elementary power groups. According to the invention, the control system comprises a global current control system (510) and a plurality of local current control systems each associated with an elementary power source of the power generation system. The global current control system (510) comprises: ▪a divider (511) arranged to deliver a fixed current set point In_fix, ▪correction unit (512) arranged to deliver a variable current set point In_var and to take either a steady state or a transitory state, the variable current set point In_var being determined as a function of a correction signal Scorr in the transitory state, ▪an adder (513) arranged to deliver a global current set point In_glob as the sum of the fixed current set point In_fix and the variable current set point In_var, and ▪a scenario management unit (514) arranged to detect when the state of at least one elementary power source (2201-220N) switches from an OFF-state to an ON-state, or vice versa, to determine the correction signal Scorr and to trigger the transitory state of the correction unit for a predetermined transitory period τtrans when a change of state is detected.
-
公开(公告)号：US10372089B2
公开(公告)日：2019-08-06
申请号：US15503245
申请日：2015-09-14
Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
Inventor： Shun-ichi Azuma , Yuki Minami
Abstract: A predicted value shaping system is provided for calculating a highly accurate control value by shaping of a predicted value. A prediction governor for calculating a control value (v) for controlling a controlled object includes: a result value acquisition unit that acquires a previous target value of the controlled object, that is, a result value (r(t−1)); a predicted value acquisition unit that acquires a predicted value (r^(t)) obtained by predicting the target value of the controlled object; and a control value calculation unit that calculates a control value (v(t)) for controlling the controlled object by applying the result value (r(t−1)) and the predicted value (r^(t)) to a predicted value shaping algorithm (G) to correct the predicted value (r^(t). The predicted value shaping algorithm (G) uses parameters of a control model (P) of the controlled object.
-
公开(公告)号：US20190123672A1
公开(公告)日：2019-04-25
申请号：US16093192
申请日：2017-04-27
Applicant: Mitsubishi Electric Corporation
Inventor： Masaya KIMURA , Hidetoshi IKEDA , Nobuhiro SHINOHARA
Abstract: A motor control apparatus includes: an oscillation instruction unit outputting an oscillation instruction signal; a filter unit performing filtering processing having frequency characteristic defined by a filter parameter; an oscillation forcing unit configuring a control loop in an oscillation period together with the filter unit, a current control unit, a motor, and a velocity calculation unit and causing the control loop to oscillate during the oscillation period in which the oscillation instruction signal is in the on-state; an amplitude evaluation unit acquiring, as an evaluation value, the amplitude ratio of an input signal to an output signal of the oscillation forcing unit when the control loop oscillates; and a filter adjustment unit comparing evaluation values provided when filter parameter candidates are set in the filter unit sequentially, selecting one of the filter parameters achieving a smaller evaluation value, and setting the selected filter parameter in the filter unit.
-
-
-
-
-
-
-
-
-
Search Results
571
records
(took 0.022 seconds)
