EP0997341A1
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EP
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Control device for movable member
Assignee: Aisin Corp
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Filing: 1999-10-28
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Granted: —
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Expires: 2019-10-28
Abstract
Abstract A control device (1) for a movable member includes a dc motor (11) for establishing position transfer of the movable member in such a manner that after a first position of the movable member is stored in a memory, even if the movable member is at a second position, the moving member is returned to the first position only upon manipulating a switch (8); and a motor pulse generating circuit (3) generating a cut-off frequency which is variable depending on a ripple pulse frequency which is indicative of a rotational number of the motor. <IMAGE>
Inventors
- 👤 Toshimitsu Oka
- 👤 Kohji Aoki
- 👤 Hideyuki Kanie
- 👤 Hitoshi Ishikawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 22:21
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/02; B60N2/0224; B60N2/0244; B60N2/0248; B60N2/02246; H; H02; H02P; H02P7/00; H02P7/0094; B60N2220/00; B60N2220/20
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
90 words
A control device for a movable member comprising; a dc motor for establishing position transfer of
the movable member in such a manner that after a first
position of the movable member is stored in a memory, even
if the movable member is at a second position, the moving
member is returned to the first position only upon
manipulating a switch; and a motor pulse generating circuit generating a
cut-off frequency which is variable depending on a ripple
pulse frequency which is indicative of a rotational number
of the motor.
Claim 2
Dependent Claim
97 words
A control device as set forth in Claim 1, wherein
the motor pulse generating circuit includes a switched capacitance filter for eliminating
noise from the motor, a cut-off frequency of the switched
capacitance filter being depended on a clock input
thereof, a pulse shaping circuit for generating a ripple
pulse signal indicative of the rotational number of the
motor by wave-shaping an output of the switched
capacitance filter, and a pulse generating circuit providing pulses to
the clock input of the switched capacitance filter, the
pulses controlling the cut-off frequency on the basis the
ripple pulse frequency.
Claim 3
Dependent Claim
159 words
A control device for a movable member comprising; a dc motor for establishing position transfer of
the movable member in such a manner that after a first
position of the movable member is stored in a memory, even
if the movable member is at a second position , the moving
member is returned to the first position only upon
manipulating a switch; a pulse generating circuit generating a signal
which is in synchronization with a movement of the movable
member; position determining means for calculating a
distance between the first position and the second
position of the movable member; detection means for detecting an instant when
the motor is turned off; correction means for storing a correction number
which is indicative of an additional movement of the
movable member due to inertia of the motor after its
turning-off; and calculating means for calculating an absolute
position of the movable member by adding the corection
number to the second position.
Claim 4
Dependent Claim
39 words
A control device as set forth in Claim 3, wherein
the pulse generating circuit is connected to a downstream
side terminal of switching means for establishing bi-directional
operations of the motors while a power source
voltage is being fed.
Claim 5
Dependent Claim
21 words
A control device as set forth in Claim 3, wherein
the first position is stored when the motor is turned
on.
Claim 6
Dependent Claim
22 words
A control device as set forth in Claim 3, wherein
the correction number is set based on rotational
conditions of the motor.
Claim 7
Dependent Claim
25 words
A control device as set forth in Claim 3, wherein
the correction number is set based on the power source
voltage applied to the motor.
References Cited (Backward Citations)
GB2060944A
Cited
EP0082664A2
Cited
US4510426A
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GB2205185A
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EP0697305A1
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DE19706297A1
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JPH1023787A
Cited
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