JPS5510520A - Position detector - Google Patents

Position detector

Info

Publication number
JPS5510520A
JPS5510520A JP8307778A JP8307778A JPS5510520A JP S5510520 A JPS5510520 A JP S5510520A JP 8307778 A JP8307778 A JP 8307778A JP 8307778 A JP8307778 A JP 8307778A JP S5510520 A JPS5510520 A JP S5510520A
Authority
JP
Japan
Prior art keywords
output
incremental
delayed
dropout
count
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.)
Granted
Application number
JP8307778A
Other languages
Japanese (ja)
Other versions
JPS5829848B2 (en
Inventor
Takakazu Sakurai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8307778A priority Critical patent/JPS5829848B2/en
Publication of JPS5510520A publication Critical patent/JPS5510520A/en
Publication of JPS5829848B2 publication Critical patent/JPS5829848B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

PURPOSE: To secure the compensation of the output for the incremental-system detector and thus to ensure an accurate detection for the position of the machine by comparing the output and its delayed output between the absolute position-system and incremental-system detectors and also detecting the dropout of the bit or the miscounting via the difference of the output and the delayed output.
CONSTITUTION: The composite output x+y of asbolute position-system and incremental-system detectors 21 and 23 is converted into analog signal Y (a) through D-A converter 26 and then supplied directly to comparators 28 and 29. At the same time, delayed output Yd (a) is obtained through delay unit 27 and then supplied to 28 and 29. In case the dropout of bit or the miscounting occurs, output C1 or C2 is obtained under Y(a)<Yd(a) and Y(a)>Yd(a) respectively. These output C1 and C2 are applied to adder 33 and 32 each, and then the count-up or count-down is given to the counter of detector 23. Thus the output is compensated at the incremental part.
COPYRIGHT: (C)1980,JPO&Japio
JP8307778A 1978-07-10 1978-07-10 position detection device Expired JPS5829848B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8307778A JPS5829848B2 (en) 1978-07-10 1978-07-10 position detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8307778A JPS5829848B2 (en) 1978-07-10 1978-07-10 position detection device

Publications (2)

Publication Number Publication Date
JPS5510520A true JPS5510520A (en) 1980-01-25
JPS5829848B2 JPS5829848B2 (en) 1983-06-25

Family

ID=13792105

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8307778A Expired JPS5829848B2 (en) 1978-07-10 1978-07-10 position detection device

Country Status (1)

Country Link
JP (1) JPS5829848B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60239609A (en) * 1984-05-15 1985-11-28 Toshiba Mach Co Ltd Detector of absolute position

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60239609A (en) * 1984-05-15 1985-11-28 Toshiba Mach Co Ltd Detector of absolute position

Also Published As

Publication number Publication date
JPS5829848B2 (en) 1983-06-25

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