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Eiji Kasai
Eiji Kasai, Aichi-Ken JP
| Patent application number | Description | Published |
|---|---|---|
| 20080277191 | Electric Power Steering Apparatus and Method for Controlling the Electric Power Steering Apparatus - An electric power steering apparatus includes an electric power supply device that includes a main electric power unit that supplies high-tension electric power and a sub-electric power supply unit that supplies low-tension electric power, the main electric power unit and the sub-electric power supply unit being connected to each other in parallel, and that supplies electric power to the electric motor from one of the main electric power supply unit and the sub-electric power supply unit. An assist ECU calculates a correction coefficient based on which a d-axis target current increases with a decrease in voltage output from the electric power supply device, and calculates a final corrected d-axis target current by multiplying the d-axis target current by the correction coefficient. | 11-13-2008 |
| 20090140673 | ELECTRIC POWER STEERING SYSTEM - In a power supply apparatus | 06-04-2009 |
| 20090259419 | BATTERY CONDITION DIAGNOSIS APPARATUS - A battery condition diagnosis apparatus for a vehicle gradually supplies electricity to an electric motor of an electric power steering apparatus when a predetermined time elapses after an ignition switch is turned off. The apparatus diagnoses the deteriorated condition of the battery on the basis of the amount of supplied electricity and the detected battery voltage which changes in accordance therewith. The electric motor may be a brushless DC motor. In this case, current is supplied to the electric motor such that only d-axis armature current Id in the d-q coordinate system flows, to thereby prevent the electric motor from rotating, whereby safety is secured. Accordingly, the condition of the battery can be accurately diagnosed by supplying electricity to the electric motor without changing the condition of the vehicle. | 10-15-2009 |
| 20100044146 | ELECTRIC POWER STEERING DEVICE - An electric power steering device, including an electric motor supplied with power from a power supply device to generate a predetermined steering assistance force for a steered wheel, and an assistance control device the controls the amount of electrical power supplied to the electric motor, according to the steering state of a steering wheel. The assistance control device detects the power supply voltage of the power supply device. The assistance control device controls the electrical current supplied to the electric motor, so as to maintain the power supply voltage greater than or equal to a set voltage which is set in advance. | 02-25-2010 |
Eiji Kasai, Toyota-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20090125190 | Power Steering Apparatus - A power steering apparatus includes a power cylinder including first and second pressure chambers; a reversible pump including a first outlet port and a second outlet port; a first hydraulic passage including a portion made from an elastomer; a second hydraulic passage including a portion made from an elastomer; a motor arranged to drive the reversible pump; a motor control section; a pump reverse rotation judging section configured to judge a reverse rotation state of the reversible pump when an actual rotation direction of the reversible pump does not correspond to a direction in which the motor is rotated by the driving signal from the motor control section; and a damping torque adding section configured to damp a torque generated in the reversible pump when the pump reverse rotation judging section determines the reverse rotation state of the reversible pump. | 05-14-2009 |
| 20090125191 | Power Steering Apparatus - A power steering apparatus includes a power cylinder; a reversible pump; first and second hydraulic passages; a reservoir tank; a first supply passage arranged to supply the hydraulic fluid through the reversible pump to the second hydraulic passage; a first one-way valve provided in the first supply passage; a second supply passage arranged to supply the hydraulic fluid through the reversible pump to the first hydraulic passage; and a second one-way valve provided in the second supply passage. A Reynolds number of a flow in the first one-way valve is equal to or smaller than 2300 when a flow rate per unit time of the flow in the first one-way valve is maximum. A Reynolds number of a flow in the second one-way valve is equal to or smaller than 2300 when a flow rate per unit time of the flow in the second one-way valve is maximum. | 05-14-2009 |
Eiji Kasai, Matsumoto-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20090116051 | Multifunction Printer and Method for Displaying Warning of Multifunction Printer - A multifunction printer has a plurality of functions and is configured to perform one of the functions selected as a selected function by a user. The multifunction printer includes a warning display section, a selector and an operation status manager. The warning display section is configured to display warning information of an operation status of each of the functions. The selector is configured to be operated by the user so as to select one of the functions as the selected function. The operation status manager is configured to manage the operation status of each of the functions. The operation status manager is configured to display the warning information on the warning display section caused by the operation status of the selected function only. | 05-07-2009 |
| 20090116081 | Image Scanning Device and Image Scanning Method - The scanning operation controller allocates a scanned image memory area of a predetermined document size within a memory, and stores the image data of the scanned document to the scanned image memory area. The image processor eliminates unneeded data from the data in the scanned image memory area of the predetermined document size to thereby produce output image data, based on a document size of the scanned document that is detected after the automatic document feeder has initiated the feed of the document to the image reader. | 05-07-2009 |