GB1375824A - - Google Patents

Info

Publication number
GB1375824A
GB1375824A GB4660370A GB4660370A GB1375824A GB 1375824 A GB1375824 A GB 1375824A GB 4660370 A GB4660370 A GB 4660370A GB 4660370 A GB4660370 A GB 4660370A GB 1375824 A GB1375824 A GB 1375824A
Authority
GB
United Kingdom
Prior art keywords
grating
counter
heads
eccentricity
rotation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4660370A
Other languages
English (en)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to GB4660370A priority Critical patent/GB1375824A/en
Publication of GB1375824A publication Critical patent/GB1375824A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
    • G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
    • G01B11/272—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes using photoelectric detection means
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/08—Continuously compensating for, or preventing, undesired influence of physical parameters of noise

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)
GB4660370A 1971-10-28 1971-10-28 Expired GB1375824A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4660370A GB1375824A (zh) 1971-10-28 1971-10-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4660370A GB1375824A (zh) 1971-10-28 1971-10-28

Publications (1)

Publication Number Publication Date
GB1375824A true GB1375824A (zh) 1974-11-27

Family

ID=10441901

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4660370A Expired GB1375824A (zh) 1971-10-28 1971-10-28

Country Status (1)

Country Link
GB (1) GB1375824A (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110617784A (zh) * 2019-09-24 2019-12-27 吉林大学 光电检测调制周期变化量和累计值的转盘偏心误差测量方法
CN115014244A (zh) * 2022-05-30 2022-09-06 吉林大学 连续调制周期和转位补偿的转盘偏心角测量方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110617784A (zh) * 2019-09-24 2019-12-27 吉林大学 光电检测调制周期变化量和累计值的转盘偏心误差测量方法
CN115014244A (zh) * 2022-05-30 2022-09-06 吉林大学 连续调制周期和转位补偿的转盘偏心角测量方法
CN115014244B (zh) * 2022-05-30 2023-03-10 吉林大学 连续调制周期和转位补偿的转盘偏心角测量方法

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Legal Events

Date Code Title Description
PS Patent sealed
429A Application made for amendment of specification (sect. 29/1949)
429D Case decided by the comptroller ** specification amended (sect. 29/1949)
PCNP Patent ceased through non-payment of renewal fee