JPS54123079A - Torque characteristic testing method - Google Patents
Torque characteristic testing methodInfo
- Publication number
- JPS54123079A JPS54123079A JP3031778A JP3031778A JPS54123079A JP S54123079 A JPS54123079 A JP S54123079A JP 3031778 A JP3031778 A JP 3031778A JP 3031778 A JP3031778 A JP 3031778A JP S54123079 A JPS54123079 A JP S54123079A
- Authority
- JP
- Japan
- Prior art keywords
- step motor
- waveforms
- torque
- torque characteristics
- testing method
- 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.)
- Pending
Links
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
PURPOSE: To improve the testing efficiency of torque characteristics by testing the torque characteristics of a step motor in accordance with either the voltage waveforms between the terminals of the step motor for a wrist watch or the current waveforms to be fed to the same.
CONSTITUTION: When a step motor 1 is driven by a drive unit 2, the waveforms shown are obtained at an oscilloscope 3. By the visual observation of the waveforms by an inspector, it is possible to test the propriety of the torque characteristics of the step motor 1. For instance, it is assumed that the proper waveforms shown at a are obtained. If, on the other hand, the maximum current is excessively low, as shown at b, it is found that the torque is low and that the torque characteristics are improper. Thus, the torque of the step motor can be tested efficiently.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3031778A JPS54123079A (en) | 1978-03-16 | 1978-03-16 | Torque characteristic testing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3031778A JPS54123079A (en) | 1978-03-16 | 1978-03-16 | Torque characteristic testing method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54123079A true JPS54123079A (en) | 1979-09-25 |
Family
ID=12300407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3031778A Pending JPS54123079A (en) | 1978-03-16 | 1978-03-16 | Torque characteristic testing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54123079A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7419258B2 (en) | 2002-09-30 | 2008-09-02 | Brother Kogyo Kabushiki Kaisha | Electronic device having detachable controller |
-
1978
- 1978-03-16 JP JP3031778A patent/JPS54123079A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7419258B2 (en) | 2002-09-30 | 2008-09-02 | Brother Kogyo Kabushiki Kaisha | Electronic device having detachable controller |
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