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JP4906836B2 |
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JP4870044B2 |
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JP2012023846A |
To provide a compact electric apparatus capable of being used without giving an unpleasant feeling to a user by eliminating a beat sound when starting a motor.When starting a DC motor 11, the compact electric apparatus performs a switchi...
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JP2012023882A |
To provide a device of controlling start-up of electrical equipment capable of resolving problems that a power supply with large maximum output current is required since start-up currents are overlapped and a large current flows when a p...
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JP4860998B2 |
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JP2012010487A |
To smoothly operate a main shaft controller in a desired rotational direction even after marker detection without using a special device in the main shaft controller.The main shaft controller includes: a starting current slow-up processi...
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JP4854034B2 |
In a storage device, before activating a spindle motor (SPM) or continuously from activation until the SPM is stabilized at a target number of rotations, a voltage and temperature monitoring unit (101a) monitors the temperature in a disk...
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JP2011259581A |
To smoothly control starting current of a motor in a stepless manner by a small capacity semiconductor switch.By controlling a conduction phase angle of a semiconductor switch 71, a secondary coil 60 wound around an iron core around whic...
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JP2011259663A |
To provide a starter of a motor that can compensate a voltage drop due to wiring distance when long distance wiring with low voltage is used, while space saving can be achieved.A starter of a motor includes a transformer 1 having a main ...
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JP4816645B2 |
The present invention provides an initial pole position estimating apparatus and method for an AC synchronous motor without using magnetic pole detector. The initial pole position estimating apparatus includes a thrust force or torque pa...
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JP4802381B2 |
An entrapment detection device of an opening/closing member which efficiently performs an entrapment determination and restrains an entrapment load even when a motor rotational signal is not inputted. The entrapment detection device incl...
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JP4799964B2 |
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JP4797295B2 |
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JP4794755B2 |
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JP4797316B2 |
A problem to be solved by the present invention is to provide a motor controller capable of enhancing the safety of a crane, or the like, by accurately detecting a control deviant state within a short period of time by means of simple co...
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JP4792826B2 |
A starting circuit for a single-phase induction motor includes a motor starting positive characteristic thermistor and a triac arranged in a series connection, and a triac control positive characteristic thermistor connected in parallel ...
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JP4789491B2 |
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JP2011188722A |
To appropriately suppress the influence in starting a device having a large load, at a water and sewerage plant.A pump 204a lowers the voltage at startup. LRT 102 changes output power in a loaded state, and connects the load device to th...
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JP4776847B2 |
A method and apparatus for deriving characteristics of a utility signal for synchronizing the output of a motor drive with the utility for a transfer or capture operation. With the drive in idle, the voltage and phase angle of an input t...
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JP4773299B2 |
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JP4754747B2 |
A start circuit for a single-phase AC motor controls the current through the start or auxiliary winding based on time rate of change of voltage or current, or based on the current or voltage dropping or rising some fraction from inrush v...
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JP4756211B2 |
An electronic circuit for starting a single phase induction motor, of the type containing a rotor and a stator with at least one running coil (B 1 ) and one starting coil (B 2 ), for operating jointly with an alternating current source (...
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JP4757877B2 |
An inductive contactless starter for single-phase AC motor, comprising a current mutual-inductor and a triac. One terminal of secondary coil of the current mutual-inductor can be connected to the gate electrode of the triac, the other te...
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JP4752105B2 |
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JP4750485B2 |
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JP4749543B2 |
A starting system for an electric motor having a main coil and an auxiliary coil which are supplied current by an electric current source in which a switch is connected between the electric current source and the auxiliary coil that has ...
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JP2011151889A |
To increase a use efficiency and an operational availability of a motor by further improving a special motor disclosed in a patent document 1.A control unit 19 detects at least one out of lock stop, excess and deficiency of a rotational ...
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JP4740824B2 |
A fan system, which receives an input voltage from exterior, includes a first fan module, a second fan module, a first starting module, a second starting module, a temperature-sensing element and a first controlling module. The first sta...
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JP2011147303A |
To provide a rotary machine controlling apparatus that effectively uses the maximum available capability of the apparatus to shorten a torque rise at startup as much as possible and can eliminate or shorten the use time of a mechanical b...
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JP4732628B2 |
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JP4736006B2 |
A motor starter control is disclosed in which an ambient temperature sensor (36) is positioned to sense ambient temperature and pole temperature sensors (30, 32, 34) are used to sense each pole temperature in a motor starter (12). A micr...
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JP4723510B2 |
A starting system for a single-phase induction motor, comprising: a stator having a running coil (11) and a starting coil (12); a power source (F) which supplies current to said running coil (11) and said starting coil (12); a running sw...
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JP4721647B2 |
In addition to the construction of a typical elevator control device in which power generated during regenerative operation is dissipated by a resistance chopper (18), an elevator control device is newly provided with: an electric double...
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JP4698210B2 |
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JP4696361B2 |
The robot apparatus of the present invention autonomously makes natural motions. The robot apparatus is provided with a control means 32, which has a feeling/instinct model that causes a motion and changes the feeling/instinct model base...
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JP2011109732A |
To provide a motor control unit and method for operating a motor efficiently.The motor control unit for inverter-controlling a three-wire single-phase induction motor has: an inverter circuit 13 for supplying a modulation voltage to the ...
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JP2011109858A |
To provide an induction motor controller capable of gradually changing the speed of rotation of an induction motor while suppressing a start-up current.The induction motor controller includes a first coil having a tap connected to a thre...
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JP4689846B2 |
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JP4685758B2 |
A method for preventing sudden inadvertent operation of a motor of a tool or appliance when the motor is initially electrically connected to a power source while an On/Off switch for controlling the motor is in a closed (i.e. 'On') posit...
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JP4683019B2 |
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JP2011087399A |
To reduce a shock when changing a connection state of winding, and to suppress a surge current.A winding switching unit for an electric motor includes change-over switches SWD, SWY that change star connection and delta connection for win...
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JP2011087425A |
To shorten the acceleration time of a motor to the minimum within a range from the lowest operation speed to the top operation speed with no increase of required capacity of a converter.A motor driver adjusts a first speed point setter 7...
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JP4676217B2 |
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JP4672236B2 |
A control apparatus includes a current detector which detects a current of a synchronous motor, a coordinate converter which coordinate-converts the current obtained from the current detector into a current on rotational biaxial coordina...
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JP4658587B2 |
In a motor driving apparatus, a control unit detects a rotation frequency of a motor to be driven and generates a control voltage Vcnt in a manner such that the rotation frequency thereof is brought close to a desired rotation frequency....
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JP4636396B2 |
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JP4614728B2 |
A drive control device of motor capable of starting up even a motor of such a type that the polarity of induced voltage does not switch every 180° of electrical angle or the polarity, positive or negative, does not occur with accuracy w...
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JP4612056B2 |
An inductive contactless starter can be provided for single-phase AC motor, which can be designed to start a compressor motor with a starting capacitor or a common single-phase AC motor. The starter can comprise a current mutual-inductor...
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JP4609971B2 |
A method and apparatus for controlling a permanent magnet synchronous motor (8) coupled to a turbo engine such that transient current and steady state current are minimised. The method comprises the steps of, for a given DC bus voltage, ...
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JP4605414B2 |
A method for controlling the starting, stopping and operation of an AC motor (16) is provided. Each winding of the AC motor (16) is interconnected to an AC source (18) by a thyristor switch (42, 44, 46) and a bypass contactor (50, 52, 54...
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