Unlock instant, AI-driven research and patent intelligence for your innovation.

Stepper motor drive, method of driving steeper motor

A technology of pulse motors and driving devices, which is applied in the direction of electric mechanical clocks, electric winding, motor generator control, etc., and can solve problems such as poor pointer operation

Inactive Publication Date: 2004-08-18
SEIKO EPSON CORP
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, when noise occurs in the power generator, in the rotation detection of the pointer drive motor, although the pointer drive motor does not actually rotate, it is judged to be rotating, that is, the phenomenon of so-called pointer malfunction increases.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Stepper motor drive, method of driving steeper motor
  • Stepper motor drive, method of driving steeper motor
  • Stepper motor drive, method of driving steeper motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0231] Next, Embodiment 2 of the present invention will be described with reference to the drawings.

[0232] [2.1] Overall structure of embodiment 2

[0233] Fig. 8 shows the general structure of the analog electronic watch 1 according to the second embodiment of the present invention.

[0234] The analog electronic watch 1 is a wrist watch, and the user uses it by wearing it on the wrist with a strap connected to the main body of the device.

[0235] The analog electronic watch 1 roughly includes a power generation unit A that generates AC power, a power supply unit B that rectifies the AC voltage of the power generation unit A and stores it, boosts the stored voltage and supplies power to each component, and detects the power generated by the power generation unit A. State and control the whole control unit C of the device according to the detection result, the pointer running mechanism D that drives the pointer, and the drive unit E that drives the pointer running mechani...

Embodiment 3

[0326] [3.1] Functional structure of the control system of embodiment 3

[0327] Next, the functional structure of the control system of the third embodiment will be described with reference to FIG. 14 . In FIG. 14 , symbols A to E correspond to the power generation unit A, the power supply unit B, the control unit C, the pointer mechanism D, and the drive unit E shown in FIG. 8 , respectively.

[0328] In addition, in FIG. 14, the same reference numerals are assigned to the same components as those in the second embodiment of FIG. 9, and detailed description thereof will be omitted.

[0329] The difference between the structure of the present embodiment 3 and the structure of the embodiment 1 is that, in addition to the structural elements of the embodiment 1, the analog electronic watch 1 of the present embodiment 3 also includes a voltage detection circuit for detecting the output voltage of the buck-boost circuit 25 85 and the number of teeth of the tooth number selection...

Embodiment 4

[0392] Next, Embodiment 4 of the present invention will be described with reference to the drawings.

[0393] [5.1] Functional structure of the control system

[0394] The overall structure of the analog electronic watch 1 in Embodiment 4 of the present invention is the same as that in Embodiment 2, so its description is omitted. Below, only the functional structure of the control system in Embodiment 4 will be described with reference to FIG. 20 .

[0395] In FIG. 20 , symbols A to E correspond to the power generation unit A, the power supply unit B, the control unit C, the pointer mechanism D and the driving unit E of the second embodiment shown in FIG. 8 . In addition, in FIG. 20, the same code|symbol is attached|subjected to the same part as Example 2 of FIG.

[0396] In FIG. 20 , the difference from Embodiment 2 in FIG. 9 is that there is a non-charging time counter 31 that counts the non-charging time according to the detection result of the charging detection circuit 1...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A pulse motor driving device having a rotation detecting unit adapted to detect whether or not a pulse motor rotates. In this device, a control unit performs an operation of increasing the effective value of the driving power of the pulse motor and performs an operation of lowering the effective value of the driving power thereof when it is detected by the rotation detecting unit that the pulse motor does not rotate. Further, the control unit interrupts the operation of lowering the effective value of the driving power of the pulse motor when a magnetic field is detected by a magnetic detecting unit.

Description

technical field [0001] The present invention relates to a driving device for a pulse motor, a driving method for a pulse motor, a timing device and a control method for the timing device, in particular to a driving device for a pulse motor, a driving method for a pulse motor and an analog clock for an analog clock with an electromagnetic generator. A timing device and a method for controlling the timing device. Background technique [0002] In recent years, the technological innovation of timekeeping devices (digital watches) such as wristwatches has made remarkable progress, and power consumption has been suppressed to about 0.5 μW. Here, considering the content of power consumption, the power consumed by the circuit system is 20% of the total power, and the remaining 80% is consumed by the pulse motor for pointer operation, etc. Therefore, in order to further reduce power consumption, it is considered to suppress the pulse motor. The power consumed is key. [0003] There...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G04C3/14G04C10/00G04G99/00H02P8/02
CPCH02P8/02G04C10/00G04C3/14G04C3/143
Inventor 赤羽秀弘中宫信二饭岛好隆饭田谦司古川常章
Owner SEIKO EPSON CORP