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commutation

1 7.4

To replace one thing or person with another

noun
/ˌkɒmjʊˈteɪʃən/

: sustitución

Because the other motor types lack the mechanical commutation of the DC brush machine, they have to be commutated electrically, Ellis explained.

Examples

Low inductance makes the FAST motor commutation virtually arc-free, which increases the life of the brushes and the commutator and electrically quiets EMI commutation.

Academic text (1994)
It excluded African-American men, who were not considered citizens, and exempted any man capable of paying a $300 commutation fee to obtain a waiver from military service.

Academic text (2005)
Because of its brushless commutation, the small motor has a long life.

Academic text (2003)
New models with sinusoidal commutation are designed to provide smooth motion.

Academic text (1994)
This feature keeps the bar-to-bar voltage low for efficient commutation.

Academic text (1994)
Electronic commutation

Academic text (2003)
For brushless motors, that usually takes the form of sine wave or six-step commutation.

Academic text (2003)
The brushless permanent magnet machine uses permanent magnets on its rotor and electrical commutation.

Academic text (2003)
Low inductance makes the FAST motor commutation virtually arc-free, which increases the life of the brushes and the commutator and electrically quiets EMI commutation.

Academic text (1994)
The governor announced the commutation of the prisoner's sentence, reducing it from life in prison to ten years.

Synonyms

exchange

vscommutation

515 2.1

The act of giving something and getting something in return

is about putting one item in another's place without implying a trade

switch

vscommutation

153 3.2

A change from one thing or person to another

is the general act of putting one thing in another's place over time

substitution

vscommutation

38 3.5

To replace one thing or person with another

has identical meaning and use in most contexts

permutation

vscommutation

1 7.6

The act of replacing one thing with another

is the same act of making one thing take another's role

transposition

vscommutation

1 7.3

Changing the order or position of things, for example swapping letters

is about putting one item in another's place, not primarily about order

surrogation

vscommutation

9.2

Using one person or thing instead of another

is the general act of making one thing take another's place

replacing

vscommutation

2.5

The act of using someone or something instead of another

is the general act of making one thing take another's position

transplacement

vscommutation

9.3

Putting a new thing in the place of another, like a statue

is the general act of putting one thing in another's place

supplantation

vscommutation

Formal

9.6

An action that replaces a person or thing, often by force

is the general act of putting a new person or thing in place

supersedure

vscommutation

9.9

To replace an old person or thing with a new, better one

is about putting a different person or thing in place without status judgment

Antonyms

stability

363 3.1

Being steady and not likely to change

permanence

15 5.5

A situation where something lasts a long time without big change

Compounds

commutation ticket

Archaic

5.1

A ticket that lets you travel many times at a lower price for regular journeys

Surface Forms

commutation singular

commutations plural

Morphology

commutation = commute (semi-transparent) = commute + ation

Morphologically derived from the verb 'commute' + '-ation'; the 'substitution' sense is clear etymologically but is less familiar to learners who know 'commute' primarily as travelling.

Etymology

Commutation comes from the Latin parts com- 'together' and mutare 'to change'. It originally meant 'changing one thing for another', so a commutation is the act of substituting or replacing something.