Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 701 - 750 out of 13,749

Document Document Title
WO/1986/004753A1
Method and device for braking an asynchronous motor by applying a direct current to the field windings. In order to achieve accurate supply time of the braking current the AC voltage appearing at the outer terminals (4, 6) of two mutuall...  
WO/1984/002813A1
Control system (28) for controlling the supply of power to a motor (12) having an armature (34) and a plugging diode (38) connected across the armature (34), including a circuit (14) for producing direction command signals, a circuit (98...  
WO/1984/002812A1
Control system (46) for controlling the supply of power to a motor (12) to produce plugging electrical braking and current limit control, including a circuit (60) for controlling the direction of energization of the motor (12), a circuit...  
WO/1984/000450A1
In an intermittent windshield wiper system in which the time between wiping cycles depends upon the degree of dryness of the windshield and upon the speed of the wiper blades on the downstroke of the wiping cycle toward the dwell positio...  
WO/1983/004349A1
An apparatus for processing the regenerative energy of an AC motor comprises a regeneration-detecting logic circuit (7) outputting a regeneration detection signal when it detects that a semiconductor switch for an AC motor drive is not c...  
WO/1982/002127A1
A digital servo control system for a d.c. motor (20) to achieve stepping motor precision and a wider speed control range than either a conventional d.c. motor or a stepping motor, as may be typically utilized in an IV syring pump. Motor ...  
WO/1982/001840A1
A torch for gas welding in a narrow deep edge preparation under a shielding gas atmosphere comprises a current collecting mouthpiece (1) with an electrode (2) and a nozzle for feeding the shielding gas to the welding zone, that nozzle be...  
WO/1982/001450A1
A direct-current brake control circuit having a construction in which an electromagnetic brake solenoid (35) and a transistor (52) for controlling the current in the solenoid are connected in series with a direct-current source (8), and ...  
WO/1982/001104A1
Controllers for brush-type multiple windings electrical motor. There has been a lack of a reliably-operating, efficient controller for such brash-type machine. The invention provides for torque control of a multiple winding electrical mo...  
WO/1981/001920A1
Simple and economical device allowing the recovery of energy stored by the grid-leak inductances of the electrical machine connected to the thyratron inverter. According to the invention, the device comprises a transformer of which the p...  
WO/1980/002482A1
A propulsion system for an electrically driven traction vehicle includes a chopper (12), a d-c traction motor (11), and means (103, 132, M) effective when the system is operating in a motoring mode for connecting the chopper in series wi...  
WO/1980/001526A1
A digital logic control system for a battery-powered direct current motor having an armature (20) and a separately excited field (21). The operator-demanded speed and the actual motor speed are continuously compared to determine whether ...  
JP6901329B2
In one aspect of the present disclosure, an electric working machine includes a three-phase brushless motor, a first switching element, a second switching element, a third switching element, a fourth switching element, a fifth switching ...  
JP6899654B2
An apparatus (100) may include a working assembly (220) configured to perform a work function responsive to operation of the working assembly, an electric motor (230) that powers the working assembly, a power source (210) configured to s...  
JP2021094640A
To provide a robot capable of suppressing damage at the time of abnormal stop. A humanoid robot 100 is configured to be electrically connectable to a power supply wiring 61 that supplies electric power to a motor 30, and is a regenerativ...  
JP2021097516A
To obtain a motor control device capable of decelerating and stopping along a trajectory of normal operation when an abnormality occurs. A motor control device temporarily stores N position commands from a first position command to an Nt...  
JP2021097445A
To provide a motor drive device capable of reducing a load on a braking circuit and suppressing heat generation of a motor during motor braking operation. A capacitor 11 which is connected in parallel to a DC power supply and smoothes a ...  
JPWO2019240168A1
To provide a brake circuit discharge system capable of stopping a power source quickly and surely. A brake circuit discharge system 100 according to the present invention is a brake drive circuit that drives a motor drive circuit 101 tha...  
JP2021097476A
To realize a motor drive device for preventing a large increase in DC link voltage due to an abnormality. A motor drive device 1 has a converter 11 that converts AC power on an AC input side into DC power and outputs it to a DC link, and...  
JP6892029B1
The present invention relates to a motor drive control device and a motor drive control system having a function of determining brake release of a motor provided with a brake. The motor drive control device and the motor drive control sy...  
JP2021090310A
To provide a vacuum pump capable of preventing an overvoltage of an inverter voltage during a brake operation. A vacuum pump 1 includes a pump rotor 10, a motor 13 that rotationally drives the pump rotor 10, a motor control unit 221 that...  
JP2021090343A
To protect an individual particularly well in an electromagnetic transportation system 2. In order to guarantee this, a safety range S is set in the transportation area 20. In addition, depending on the given safety requirement stage, th...  
JP6879026B2
To provide a motor control device which can stop a movable body, driven by a DC motor, at an intended stop position.A motor control device 1 includes: a drive signal generator unit 14 which outputs a drive signal according to a running t...  
JP2021083154A
To provide a motor drive device capable of decelerating by FB (feedback) drive and shortening the time required from a start time of deceleration of a rotor to a stop time. A stepping motor 104a includes a rotor magnet 118, coils 119, 12...  
JP2021083219A
To provide a regenerative discharge system for improving the reliability of a circuit while reducing the number of parts required for applying a brake. A regenerative discharge system 100 includes a motor M for driving a robot, an invert...  
JP6874674B2
A shift range control apparatus switches a shift range by controlling a motor. The shift range control apparatus includes an angle calculator, a speed calculator and a drive controller. The angle calculator calculates a motor angle based...  
JP6874840B2
Provided is an electric tool which can be suitably controlled depending on which one among an adaptor device and a battery pack is connected. This electric tool (1) is provided with a motor (6), a control circuit (10) for controlling the...  
JP2021072691A
To stably hold and control an output mechanism at a target position even when a DC motor is used as an electric actuator. When the deviation between the rotation angle θpt of the output shaft 14 and the target angle θsp is eliminated, ...  
JP2021072678A
To provide a motor drive device capable of suppressing damage to a regenerative circuit or the like. A motor drive device 10 is smoothed by a converter 14 that converts an AC voltage supplied from an AC power supply 16 into a DC voltage,...  
JP2021069198A
To provide a motor control device capable of quickly and effectively stopping at a specific position and realizing further speeding up of an orientation operation. This is a motor control device 3 for stopping a rotating shaft rotating a...  
JP2021065030A
To provide a motor control device capable of appropriately performing control after driving a motor to a movable limit position. A shift range control device 40 includes an energization control unit 52 and an overreturn determination uni...  
JP2021065074A
To provide a motor control device capable of stopping rotation of a rotor in an extremely short time without demagnetizing a rotor magnet. When a rotor stop request is input while the rotor of a three-phase brushless DC motor is rotating...  
JP6863815B2
To provide a control device capable of more accurately detecting a power failure.A control device 200 for causing an industry machine to execute retreat operation in detecting an occurrence of a power failure includes: a power supply vol...  
JP6863256B2
To provide a motor control device capable of switching a unit rotation amount of a rotary reel which is driven by a motor.A motor control device comprises: a communication unit 10 which receives a rotation amount setting signal represent...  
JP6856465B2
Provided is a brake inspection device including: load torque measurement units configured to respectively measure: load torques as a motor is normally rotated and reversely rotated in a released state where an operation of a brake for ho...  
JP2021049593A
To provide a robot system which suppresses heat generation due to regenerative resistance and temperature rise of a control device without adding a fan or a refrigerant. A robot system 100 has a robot main body 101 having a robot arm por...  
JP6851495B2
An electric motor control device controls driving of electric motors connected in parallel with each other and includes a power converter converting power from a power supply, and supply the converted power to each of the electric motors...  
JP6846662B2
A turbocompressor apparatus includes a turbocompressor including a compressor motor, a lubrication pump including a pump motor, a converter that performs electric power conversion between a voltage of a power source and a direct-current ...  
JP2021042804A
To provide an electric valve device capable of improving mountability while ensuring the position holding performance of a valve body.A valve device 10 comprises an electric motor 42, a speed reducing mechanism 43, a valve body 24, a pow...  
JP2021044961A
To provide a motor drive device that performs smooth deceleration control in a shorter period of time to accurately stop a rotor at a target position.The motor drive device is capable of open-loop (OL) drive, which switches power to a mo...  
JP2021044994A
To provide an integrated actuator in which a regenerative resistance is omitted or simplified, and an actuator system including the actuator.An actuator 10 includes a motor 12, a drive circuit 11, a power supply line LP1 that connects a ...  
JP2021044988A
To provide a technology capable of reducing the peak of inrush current at the time of short circuit brake operation.The specification discloses an electrically-driven work machine. The electrically-driven work machine may comprise a brus...  
JP6839783B1
To provide a rotation speed determining device for determining whether or not a rotation speed of a motor is a rotation speed capable of making the motor stop in an emergency. A motor 11 connected to a rotated body 20 to rotate the rotat...  
JP2021035158A
To provide a vacuum evacuation device which can make circuit components for absorbing regenerative voltage such as brake resistance unnecessary and an operation method thereof.A vacuum evacuation device concerning one aspect of the prese...  
JP2021035150A
To provide a motor drive device capable of performing various fault diagnoses.A motor drive device 10 comprises: a control unit 60 that sets, during fault diagnosis, at least one of a plurality of lower arm side switching elements B, D a...  
JP2021030931A
To provide an electric vertical take-off and landing aircraft that suppresses deterioration in flight stability of an airframe when electric power supply to a motor is stopped.An electric vertical take-off and landing aircraft 100 compri...  
JP2021027684A
To provide a control apparatus of a servomotor, which rapidly and effectively enables a stop it at a specific position, even in the case where an operation speed when a constant position stop command is issued is certainly low.A control ...  
JP2021024038A
To provide a stop method for a robot for facilitating restarting at a power recovery time and a restart of a normal operation by enabling the reduction of the power consumption of a standby power source when a capacitor and a battery are...  
JP2021016224A
To provide a motor drive device with a dynamic brake circuit and a regenerative brake circuit which efficiently applies a brake without giving a burden to an apparatus and while securing safety.A motor drive device 1 comprises: a power s...  
JP2021016212A
To provide a technique capable of easily releasing braking by a braking device during no braking of a motor.According to a motor controller for drive-controlling a motor provided with a braking device capable of braking an output shaft, ...  

Matches 701 - 750 out of 13,749