发明名称 |
ELECTRONIC SEWING MACHINE |
摘要 |
<p>When a pulse motor in an electronic sewing machine is to be subjected to a heavy load, the pulse motor is operated at a slower speed in order to cause the pulse motor to operate at a rate in which it has a maximum torque output. For lesser load conditions, pulse motor speed is allowed to increase. Speed control of the pulse motor follows a generally trapezoidal curve, which curve includes a speed-up section and a slow-down section, and may include a flat section. That portion of the generally trapezoidal curve along which motor speed follows is determined by the distance which the pulse motor is required to move.</p> |
申请公布号 |
JPS55129085(A) |
申请公布日期 |
1980.10.06 |
申请号 |
JP19790035213 |
申请日期 |
1979.03.26 |
申请人 |
JANOME SEWING MACHINE CO LTD |
发明人 |
MAKABE HACHIROU;WATANABE KAZUO;TAKENOYA HIDEAKI;TONOMURA YOSHINOBU;SHIYOUMURA HIDEKAZU |
分类号 |
D05B3/02;D05B19/02;G05B19/23 |
主分类号 |
D05B3/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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