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JP4056512B2 |
The present invention is directed to the provision of a servomotor driving apparatus that feeds energy stored in a power storage part connected with a DC link that connects a rectifier circuit with an inverter circuit so that the energy ...
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JP4056451B2 |
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JP4057504B2 |
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JP4053557B2 |
A servo motor controller is provided with a motor control section for controlling a servo motor provided with a brake. The motor control section includes a speed command portion for outputting a speed command to increase or reduce the ro...
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JP4052080B2 |
A vehicle and method of operating a vehicle including a motor that supplies a driving force to a wheel, a battery that supplies electric power to the motor and receives regenerative electric power from the motor and a controller that det...
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JP4051646B2 |
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JP2008043196A |
To provide the most suitable procedure for braking processing at failure time in a permanent motor drive unit.An apparatus comprises a multi-phase inverter, a failure detector for indicating the detection of failure, a sensor offering a ...
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JP2008029185A |
To provide a regenerative control circuit for a series-wound motor.The circuit comprises a first switching element to which a second rectifier element, inversely connected in series between a field coil of a motor and an armature coil, i...
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JP2008027246A |
To provide a positioning controller and positioning control method for smoothly moving a mobile object in a deceleration process and shortening a positioning time when receiving a command of changing a target position during positioning ...
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JP4044636B2 |
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JP4042820B2 |
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JP2008022590A |
To properly detect an abnormality in the operation of a servomotor.This servomotor monitoring device comprises: a magnetic pole position calculation means 20 which takes out a magnetic pole position signal of the servomotor from motor dr...
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JP4040592B2 |
A motor power supply including a DC supply part having a pair of supply terminals; an inverter having a pair of connection terminals respectively connected to the supply terminals thereof to receive DC power therefrom and to supply AC po...
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JP4039280B2 |
A motor drive circuit includes a first transistor. The collector of a second transistor is connected to the emitter of the first transistor in series. A motor is connected to a connection point between the first and second transistors. A...
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JP4031398B2 |
To provide a molding machine which needs only a small regeneration resistor. A plurality of driving shafts by motors M1-Mn and a straightener 11 converting an alternating current into a direct current are provided. The straightener is ap...
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JP4027319B2 |
A method and a circuit for protecting an electric motor and/or its trigger circuit against overload in the emergency-operation mode in a motor vehicle direct-current fan motor operated by means of pulse width modulation, in which the tri...
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JP4027681B2 |
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JP4027251B2 |
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JP2007537110A |
A method for energy storage and recovery for load hoisting equipment powered by an induction hoist motor controlled by a first inverter and having a dual inverter controlling a capacitor utilizing rest power such as reverse power generat...
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JP4021431B2 |
The invention is directed to the provision of a converter apparatus, an inverter apparatus, and a DC link voltage control method, wherein the upper limit value of the DC link voltage that rises due to regenerative energy occurring from a...
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JP2007312477A |
To provide a reliable motor operating switch where arc generated between contacts tends to vanish, when switching two sets of changeover switches over, from NO side to NC side. The field coil 5 of a commutator motor (not shown) is connec...
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JP2007306673A |
To provide a counter-electromotive force eliminating device capable of eliminating a counter-electromotive force generated due to an inertial force of a motor by operating a load in an earlier stage, even if power supply is unexpectedly ...
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JP4005256B2 |
A wiper blade (1) wipes over a predetermined range of a front windshield in response to rotation of a wiper motor (5) in a forward and reverse directions. The wiper blade operates in a wiping range between a predetermined upper reversing...
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JP4004622B2 |
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JP3999226B2 |
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JP3996066B2 |
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JP2007274811A |
To provide a protection circuit where a resistor for power consumption is efficiently arranged, selection of a power consumption path via the resistor consuming surplus power is devised, surplus power is efficiently consumed while space ...
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JP2007274867A |
To quickly stop a motor, while regenerating power to a power supply. A capacitor 160 is charged, while stepping down an output voltage of a DC power supply 30 with a step-down chopper circuit 120 so as to supply the charged power to the ...
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JP2007274810A |
To provide a three-phase brushless DC motor that can be stopped by extremely easily and electromagnetically being imparted with braking. This stop device of the three-phase brushless DC motor comprises a power stage for drive-controlling...
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JP3993659B2 |
The invention is directed to a method and an arrangement for controlling a positioning element of an internal combustion engine. In the method and arrangement, a positioning element is used which exhibits a so-called torque-reversal poin...
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JP3994239B2 |
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JP3987976B2 |
In operating to open or close a door (step S 1 ), when an outside switch indicating whether a door knob portion is grabbed or not grabbed by the hand of an operator is brought into an ON state (grip state), or when a distance of moving t...
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JP2007259617A |
To solve the problem that a preferable braking device for immediately stopping a fan in power source interruption has not been obtained in a conventional motor-driven rotary body. This braking device for a motor-driven rotary body has a ...
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JP2007252126A |
To obtain a motor controller performing regenerative braking which is not shocking sudden braking while shortening the time elapsing before complete stoppage. The motor controller performing regenerative braking of a motor 1 upon occurre...
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JP3981280B2 |
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JP2007228791A |
To dispense with the incorporation of a brake into a motor in a system for operating a glass bottle. A carriage 12 for moving an inspection apparatus 14 can be moved by a servomotor 10 connected to three power supply lines 16. The rotati...
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JP3971653B2 |
To provide a deep freezer for a vehicle which can suppress overshooting of the output voltage of a generator when the load operation is stopped. The deep freezer for the vehicle comprises a generator 2 driven by the engine 1 of the vehic...
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JP3972322B2 |
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JP3969988B2 |
To provide a quick stop apparatus for electric servo type sheet metal working machine which reliably carries out a quick stop at an irregular stop, and secures durability against large braking torque. The quick stop apparatus is provided...
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JP3968673B2 |
To improve productivity by shortening the deceleration time in deceleration and shortening the tact time in the processing of a machine tool. Each phase of windings of a permanent magnet synchronous motor is divided into windings Na and ...
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JP2007213127A |
To provide a speed control method and a speed controller for a moving object capable of stopping precisely the moving object in a target stop position. A speed command value Nc is output to an inverter 4 to make the moving object travel ...
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JP2007195328A |
To enable the drive of a motor to be resumed as quickly as possible after a stop for a motor burning protection, and to reduce manufacturing cost. This device is provided with an operation time detection portion 12 that detects an operat...
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JP2007195352A |
To provide a power supply unit for motor capable of quickly discharging a capacitor accumulated charge of a step-up circuit or the like during stoppage of the motor and not requiring the resistance for discharging. The power supply devic...
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JP3951516B2 |
To obtain an inverter which can be surely protected, while eliminating errors in interruption of operation by detecting overload of a brake circuit accurately, without requiring an overload detecting means including a thermal relay or a ...
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JP3945870B2 |
To provide a power steering device by which the increment restoration of a motor current upper limit for protecting the driving circuit of a motor from overheat can be executed quickly and a steering force can be restored rapidly. The dr...
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JP3943726B2 |
To provide a regenerative braking apparatus wherein the control of the regenerative torque of a motor can be performed accurately, by using a power supply of its output voltage varying largely and by using a CPU of its operation throughp...
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JP2007174729A |
To provide an electric motor driver and a DB circuit protecting method which protect a DB circuit against a short life time and a damage due to an overload in a DB resistor of the DB circuit without an addition of a new dedicated detecto...
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JP3939642B2 |
To provide a drive controller for an actuator which can prevent the occurrence of noise at start or stoppage of an electric motor. This drive controller for an actuator is equipped with a drive means which drives the actuator having the ...
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JP2007166843A |
To provide a stoppage control method and a system by which a stop position of a mobile unit driven by a motor is controlled with high accuracy.The stoppage control method and the system applied with the method include a moving direction ...
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JP2007159213A |
To provide a servo driver attaining cost reduction even in single-axis control or in multiaxis control and restoring regenerative voltage to an alternating-current power supply in multiaxis control.Provided is a power supply module havin...
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