How to manipulate the magnetic field around a robot?

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Nanorobotics can be realized with a combination of a magnetic field and a passive robot. The robot is equal to a tweezer which is controlled by an external field. This field is generated by electromagnetic coils. Even the topic is described in the literature since the 2000s, it is hard to understand how such a system works exactly. My question is: what kind of coil is needed to generate a vector field which drives the robot? As far as i know from the physics course, a normal coil can either be on or off, but how to change the direction of the field?

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asked 2 hours ago

Manuel Rodriguez

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Nanorobotics can be realized with a combination of a magnetic field and a passive robot. The robot is equal to a tweezer which is controlled by an external field. This field is generated by electromagnetic coils. Even the topic is described in the literature since the 2000s, it is hard to understand how such a system works exactly. My question is: what kind of coil is needed to generate a vector field which drives the robot? As far as i know from the physics course, a normal coil can either be on or off, but how to change the direction of the field?

electronics

share|improve this question

asked 2 hours ago

Manuel Rodriguez

550212

add a comment | 

up vote
1
down vote

favorite

up vote
1
down vote

favorite

Nanorobotics can be realized with a combination of a magnetic field and a passive robot. The robot is equal to a tweezer which is controlled by an external field. This field is generated by electromagnetic coils. Even the topic is described in the literature since the 2000s, it is hard to understand how such a system works exactly. My question is: what kind of coil is needed to generate a vector field which drives the robot? As far as i know from the physics course, a normal coil can either be on or off, but how to change the direction of the field?

electronics

share|improve this question

asked 2 hours ago

Manuel Rodriguez

550212

Nanorobotics can be realized with a combination of a magnetic field and a passive robot. The robot is equal to a tweezer which is controlled by an external field. This field is generated by electromagnetic coils. Even the topic is described in the literature since the 2000s, it is hard to understand how such a system works exactly. My question is: what kind of coil is needed to generate a vector field which drives the robot? As far as i know from the physics course, a normal coil can either be on or off, but how to change the direction of the field?

electronics

electronics

share|improve this question

asked 2 hours ago

Manuel Rodriguez

550212

share|improve this question

asked 2 hours ago

Manuel Rodriguez

550212

share|improve this question

share|improve this question

asked 2 hours ago

Manuel Rodriguez

550212

asked 2 hours ago

Manuel Rodriguez

550212

asked 2 hours ago

Manuel Rodriguez

550212

550212

add a comment | 

add a comment | 

2 Answers
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The magnetic field is proportional to the current. A fixed geometry coil can generate a field that is positive or negative or zero based on how much current is driven through the coil and which direction the current goes. This is limited by how heat is removed from the system.

The exact shape of the field can be influenced using a magnetic circuit to guide the magnetic field.

Magnetic fields combine so two coils can create a combined field that is any combination (sum) of the individual fields. Add as many coils as you want.

Other types of control can be done by rapidly switching fields (perhaps just a single field) on and off rapidly. This is what is done for the magnetic levitation desk toys.

There are other things that can be done by using the magnetic field to transmit power, or combining mechanical or fluid dynamic effects on the motion of the nano-robot with the magnetic effect.

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answered 1 hour ago

hauptmech

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AC motors operate by generating a vector field. The field on the stator rotates, and the rotating field interacts with the field on the rotor (generated, or permanent magnets, or induced) to move the rotor.

The motor fields rotate by varying the current applied to the stator windings because magnetic field strength is proportional to current. The orientation of the coil/winding determines the direction of the field, and then the applied current essentially determines the magnitude along that axis.

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answered 1 hour ago

Chuck♦

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2 Answers
2

active

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2 Answers
2

active

oldest

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active

oldest

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active

oldest

votes

up vote
2
down vote

The magnetic field is proportional to the current. A fixed geometry coil can generate a field that is positive or negative or zero based on how much current is driven through the coil and which direction the current goes. This is limited by how heat is removed from the system.

The exact shape of the field can be influenced using a magnetic circuit to guide the magnetic field.

Magnetic fields combine so two coils can create a combined field that is any combination (sum) of the individual fields. Add as many coils as you want.

Other types of control can be done by rapidly switching fields (perhaps just a single field) on and off rapidly. This is what is done for the magnetic levitation desk toys.

There are other things that can be done by using the magnetic field to transmit power, or combining mechanical or fluid dynamic effects on the motion of the nano-robot with the magnetic effect.

share|improve this answer

answered 1 hour ago

hauptmech

3,566917

add a comment | 

up vote
2
down vote

The magnetic field is proportional to the current. A fixed geometry coil can generate a field that is positive or negative or zero based on how much current is driven through the coil and which direction the current goes. This is limited by how heat is removed from the system.

The exact shape of the field can be influenced using a magnetic circuit to guide the magnetic field.

Magnetic fields combine so two coils can create a combined field that is any combination (sum) of the individual fields. Add as many coils as you want.

Other types of control can be done by rapidly switching fields (perhaps just a single field) on and off rapidly. This is what is done for the magnetic levitation desk toys.

There are other things that can be done by using the magnetic field to transmit power, or combining mechanical or fluid dynamic effects on the motion of the nano-robot with the magnetic effect.

share|improve this answer

answered 1 hour ago

hauptmech

3,566917

add a comment | 

up vote
2
down vote

up vote
2
down vote

The magnetic field is proportional to the current. A fixed geometry coil can generate a field that is positive or negative or zero based on how much current is driven through the coil and which direction the current goes. This is limited by how heat is removed from the system.

The exact shape of the field can be influenced using a magnetic circuit to guide the magnetic field.

Magnetic fields combine so two coils can create a combined field that is any combination (sum) of the individual fields. Add as many coils as you want.

Other types of control can be done by rapidly switching fields (perhaps just a single field) on and off rapidly. This is what is done for the magnetic levitation desk toys.

There are other things that can be done by using the magnetic field to transmit power, or combining mechanical or fluid dynamic effects on the motion of the nano-robot with the magnetic effect.

share|improve this answer

answered 1 hour ago

hauptmech

3,566917

The magnetic field is proportional to the current. A fixed geometry coil can generate a field that is positive or negative or zero based on how much current is driven through the coil and which direction the current goes. This is limited by how heat is removed from the system.

The exact shape of the field can be influenced using a magnetic circuit to guide the magnetic field.

Magnetic fields combine so two coils can create a combined field that is any combination (sum) of the individual fields. Add as many coils as you want.

Other types of control can be done by rapidly switching fields (perhaps just a single field) on and off rapidly. This is what is done for the magnetic levitation desk toys.

There are other things that can be done by using the magnetic field to transmit power, or combining mechanical or fluid dynamic effects on the motion of the nano-robot with the magnetic effect.

share|improve this answer

answered 1 hour ago

hauptmech

3,566917

share|improve this answer

share|improve this answer

answered 1 hour ago

hauptmech

3,566917

answered 1 hour ago

hauptmech

3,566917

answered 1 hour ago

hauptmech

3,566917

3,566917

add a comment | 

add a comment | 

up vote
1
down vote

AC motors operate by generating a vector field. The field on the stator rotates, and the rotating field interacts with the field on the rotor (generated, or permanent magnets, or induced) to move the rotor.

The motor fields rotate by varying the current applied to the stator windings because magnetic field strength is proportional to current. The orientation of the coil/winding determines the direction of the field, and then the applied current essentially determines the magnitude along that axis.

share|improve this answer

answered 1 hour ago

Chuck♦

9,9792732

add a comment | 

up vote
1
down vote

AC motors operate by generating a vector field. The field on the stator rotates, and the rotating field interacts with the field on the rotor (generated, or permanent magnets, or induced) to move the rotor.

The motor fields rotate by varying the current applied to the stator windings because magnetic field strength is proportional to current. The orientation of the coil/winding determines the direction of the field, and then the applied current essentially determines the magnitude along that axis.

share|improve this answer

answered 1 hour ago

Chuck♦

9,9792732

add a comment | 

up vote
1
down vote

up vote
1
down vote

AC motors operate by generating a vector field. The field on the stator rotates, and the rotating field interacts with the field on the rotor (generated, or permanent magnets, or induced) to move the rotor.

The motor fields rotate by varying the current applied to the stator windings because magnetic field strength is proportional to current. The orientation of the coil/winding determines the direction of the field, and then the applied current essentially determines the magnitude along that axis.

share|improve this answer

answered 1 hour ago

Chuck♦

9,9792732

AC motors operate by generating a vector field. The field on the stator rotates, and the rotating field interacts with the field on the rotor (generated, or permanent magnets, or induced) to move the rotor.

The motor fields rotate by varying the current applied to the stator windings because magnetic field strength is proportional to current. The orientation of the coil/winding determines the direction of the field, and then the applied current essentially determines the magnitude along that axis.

share|improve this answer

answered 1 hour ago

Chuck♦

9,9792732

share|improve this answer

share|improve this answer

answered 1 hour ago

Chuck♦

9,9792732

answered 1 hour ago

Chuck♦

9,9792732

answered 1 hour ago

Chuck♦

9,9792732

9,9792732

add a comment | 

add a comment | 

 

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