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Patent Searching and Data


Matches 1,851 - 1,900 out of 13,796

Document Document Title
JP2009183011A
To provide a method of shutting down a servo motor, which can shut down a servo motor safely, without going via a controller and can keep the state of having shut it down without consuming wasteful power.The servo motor (2) is controlled...  
JP2009183098A
To reduce loss, to make battery life longer, and to reduce the capacity of an electric double-layer capacitor (EDLC).The EDLC 10 is connected in parallel via a step-up and step-down chopper 17 to a battery 8 connected to an AC motor 13 v...  
JP4313203B2
The invention relates to an electric motor drive for operating an alternating-current motor. The electric motor drive comprises a frequency converter for controlling the motor, which frequency converter comprises a rectifier and an inver...  
JP4311172B2  
JP2009177988A
To provide a motor driving device capable of high speed driving, and capable of achieving both saving energy and high precision by improving the accuracy of a stop position when energization is shut off after driving a motor to a predete...  
JP2009171745A
To provide a motor driving system which can decelerate the driving of a load while consuming regenerative power with braking resistance, and in which there is no need to insulate the braking resistance at high voltage.The motor driving s...  
JP2009165296A
To detect the failure of a dynamic brake circuit without addition of a contact signal and a control circuit.A motor drive 1 has a dynamic brake circuit 5 that generates decelerating torque by the power generating brake of a synchronous m...  
JP4300831B2  
JP4300732B2
This invention is to provide a variable speed apparatus capable of equalizing a moving distance at the time of deceleration from deceleration start to deceleration completion in the case that a deceleration stop command is inputted durin...  
JP4301653B2  
JP4300613B2  
JP2009159776A
To suppress distortion of an input supply voltage at regeneration of power supply in a motor drive unit.The motor drive unit (1a) includes a converter circuit (2) with a power supply regenerative function to convert input ac power to dc ...  
JP4295423B2  
JP2009153308A
To provide an inverter system having a large braking torque, i.e. high braking performance, under conditions that a motor loss is large but a dc voltage does not become excessive at braking, while the inverter system is designed to suppr...  
JP4292563B2  
JP2009148095A
To detect resistor disconnection without enlarging a circuit scale.Output of a main power generator 2 is converted into a DC current by a commutator 3 and a smoothing capacitor 4 so as to drive an AC electric motor 6 by converting the DC...  
JP4287070B2
When abnormal current due to jamming is detected through motor current (ID), the motor current (ID) performs an operation in which an ON/OFF operation and a continuous ON operation are repeated, so that increment of the motor current (ID...  
JP4289923B2  
JP2009142103A
To provide a controller of an elevator capable of properly protecting regenerative resistors even if erroneous application or failure occurs with the regenerative resistors.The controller comprises a regenerative power calculating part 3...  
JP2009524401A
The method involves switching an electrical machine (1) into a de-energizing mode initially, in which all switches of pulse inverter (2) are opened. The electrical machine is later switched into a short-circuit mode, in which the switche...  
JP2009142115A
To provide a method for detecting dynamic brake circuit failure, which detects a failure with a relay and a rectifying diode or the like constituting the dynamic brake circuit, while a motor is not driven.A motor controller includes: the...  
JP4284075B2  
JP2009136102A
To provide a regenerative resistor protection device that achieves cost reduction and miniaturization.The regenerative resistor protection device includes: first and second switching elements 8, 9 for controlling energization to a regene...  
JP4282365B2
To improve fuel consumption by dispensing with weak field operation even at high revolution, for continuously charging a battery regardless of the revolution number of a synchronous motor, with loss from a weak field current suppressed. ...  
JP2009125056A
To provide an electric mowing machine capable of forcibly stopping a rotary blade, and the like, even when electric power supplied to a motor is shielded, and of having higher safety.A controller 20 of an electric mowing machine 1 is con...  
JP4278227B2  
JP4273272B2  
JP4272734B2
A hill-holding arrangement for an electrically driven vehicle includes a vehicle with a "gas pedal" which generates a torque command signal TCMD. A switch (314) couples TCMD to a motor controller (316, 14) which drives the motor (40) and...  
JP4269380B2  
JP4267288B2  
JP2009519696A
The invention relates to a pinch protection method and device for a motor-driven closing system. The method comprises the following steps: detecting a reduced motor speed, switching off the motor, analyzing a sensor signal for detecting ...  
JP2009106092A
To increase the accuracy of stop detection of a motor by reducing the variations and errors in threshold setting to be used for determination of the stop of the motor.Back electromotive force (BEMF) of the motor is detected. It is determ...  
JP4262309B2
In a displacement drive that provides an obstruction prevention function for movable parts, in particular such as windows and sunroofs in motor vehicles, a decrease in the rotation speed or velocity of the drive is provided in order to a...  
JP2009095155A
To provide a technology for further accurately stopping a drive target object at a target stop position regardless of a motor driving state.A motor controller drives a motor in two control modes of closed-loop control for controlling the...  
JP2009095212A
To provide a ventilating airblower equipped with a blushless DC motor, such as a range hood, which stops without fail in a stable manner even if the motor gets slower in revolution, and achieves a reduction in the thickness of the range ...  
JP2009081987A
To provide an electric safety braking apparatus which uses a vehicular driving electric motor having a permanent magnet and allows a breaking resistor to occupy a small space.The electric safety braking apparatus includes an electromecha...  
JP2009077624A
To provide an electrodynamic brake device capable of performing effective braking in safety.The electrodynamic braking device for an electrically tractive vehicle is equipped, for the purpose of improving a force-to-velocity characterist...  
JP2009073181A
To provide a motor control device, a printer, and a motor control method which can make the accuracy of a stopping position good.The printer includes a motor 31 for giving driving force for conveying an article P to be conveyed, a positi...  
JP4251267B2  
JP2009072000A
To provide a method of performing emergency stop safely without providing a special signal line in an emergency stop method of a driving system that drives a unit of a motor with two or more controllers, and its motor controller.The moto...  
JPWO2009038164A
Without causing the increase in part mark, the stop of the transportation means after operation is detected quickly and easily, and the stop detection method of the transportation means which can aim at improvement in a throughput and an...  
JP2009513093A
A method of controlling an electromechanical actuator (ACT) comprising a motor (MOT) for maneuvering a mobile appliance (LD) of a building in a first direction (DIR1) and in a second direction (DIR2) by way of a remote-control unit (RCU)...  
JP2009060737A
To provide a technology for correctly determining whether a motor-driven structure stopped normally or collided against an obstacle, and isolating the structure from the obstacle when the structure collided against the obstacle.An obstac...  
JP4239886B2
A method for greatly reducing magnetic sound of an alternating current rotating machine compared with the past comprising superimposing an n-1-th order frequency in inverse turn and an m+1-th order magnetic sound reduction use harmonic c...  
JP4238489B2  
JP2009055715A
To provide an inverter device and a service interruption processing method wherein it is possible to prevent burnout in a resistor in a rush current prevention circuit, to obviate necessity for the contact signals of an electromagnetic c...  
JP2009055781A
To provide a motor driving controller capable of protecting a motor driving controller from the electromotive force of the motor generated by the rotation of a fan due to an outdoor wind, increasing the number of turns in the winding of ...  
JP4235494B2  
JP2009050058A
To provide an air conditioner for vehicles that makes it possible to enhance the accuracy of the stop position of a DC servo motor inexpensively.The air conditioner is so constructed that the following is implemented: the point at which ...  
JPWO2009025060A
Provide an operation control device of electric apparatus excellent in operativity, without enlarging a hand operation switch box. While switch operation of hand operation switch box 30 performs an operation stop of electric apparatus 10...  

Matches 1,851 - 1,900 out of 13,796