SENSORLESS BRUSHLESS MOTOR CONTROL DEVICE AND ELECTRIC FLUID PUMP USING THE SAME
PROBLEM TO BE SOLVED: To provide a sensorless brushless motor control device that is configured at low cost and can stably control a sensorless brushless motor by smoothly switching from motor startup to current control and an electric fluid pump using the motor. SOLUTION: The sensorless brushless m...
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| creator | YOSHIDA KIYOSHI NAGANO MASAMI TANNO HEIKICHI NODA JUNICHI MARUMOTO KATSUJI |
| description | PROBLEM TO BE SOLVED: To provide a sensorless brushless motor control device that is configured at low cost and can stably control a sensorless brushless motor by smoothly switching from motor startup to current control and an electric fluid pump using the motor. SOLUTION: The sensorless brushless motor control device includes an inverter, an inverter drive circuit that drives the inverter, and a current control means that controls the inverter drive circuit according to a current command from a superior control means and includes a first-order lag compensating means. The device further includes a control mode changeover decision means that determines changeover of a control gain of the current control means after startup of the sensorless brushless motor in response to a motor revolution sensing signal from the inverter drive circuit and a control mode changeover means that changes over the control gain of the current control means in response to an output of the control mode changeover decision means. COPYRIGHT: (C)2011,JPO&INPIT |
| format | Patent |
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SOLUTION: The sensorless brushless motor control device includes an inverter, an inverter drive circuit that drives the inverter, and a current control means that controls the inverter drive circuit according to a current command from a superior control means and includes a first-order lag compensating means. The device further includes a control mode changeover decision means that determines changeover of a control gain of the current control means after startup of the sensorless brushless motor in response to a motor revolution sensing signal from the inverter drive circuit and a control mode changeover means that changes over the control gain of the current control means in response to an output of the control mode changeover decision means. 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SOLUTION: The sensorless brushless motor control device includes an inverter, an inverter drive circuit that drives the inverter, and a current control means that controls the inverter drive circuit according to a current command from a superior control means and includes a first-order lag compensating means. The device further includes a control mode changeover decision means that determines changeover of a control gain of the current control means after startup of the sensorless brushless motor in response to a motor revolution sensing signal from the inverter drive circuit and a control mode changeover means that changes over the control gain of the current control means in response to an output of the control mode changeover decision means. 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SOLUTION: The sensorless brushless motor control device includes an inverter, an inverter drive circuit that drives the inverter, and a current control means that controls the inverter drive circuit according to a current command from a superior control means and includes a first-order lag compensating means. The device further includes a control mode changeover decision means that determines changeover of a control gain of the current control means after startup of the sensorless brushless motor in response to a motor revolution sensing signal from the inverter drive circuit and a control mode changeover means that changes over the control gain of the current control means in response to an output of the control mode changeover decision means. COPYRIGHT: (C)2011,JPO&INPIT</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BLASTING CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION HEATING LIGHTING MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS WEAPONS |
| title | SENSORLESS BRUSHLESS MOTOR CONTROL DEVICE AND ELECTRIC FLUID PUMP USING THE SAME |
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