US4687975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor control with radio control device
Assignee: Futaba Corp
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Filing: 1986-08-12
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Granted: 1987-08-18
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Expires: 2006-08-12
Abstract
Abstract A motor control device for a radio control system is disclosed. The motor control device is mounted on an object to be controlled so as to adjust a control range in each of forward, braking and backing of the object. The motor control device is provided with a variable reference signal source for generating a backing reference signal and a comparator for discriminating a region of control element on a transmitter side by comparing a braking-backing command signal generated from a drive control circuit with the backing reference signal. The control range can be adjusted by adjusting a level of the backing reference signal of the variable reference signal source.
Inventors
- 👤 Nobuhiro Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:36
CPC Classifications
A; A63; A63H; A63H30/00; A63H30/02; A63H30/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
169 words
A motor control device comprising: a drive control means for receiving a command signal from a transmitter to alternatively generate a forward command signal corresponding to a forward command region of a control element on said transmitter side and a braking-backing command signal corresponding to a braking-backing command region of said control element; a normal rotation drive means for rotating a motor in a normal direction in response to said forward command signal alternatively generated from said drive control means; a backing reference signal generating means for generating an adjustable backing reference signal; a discriminating means to which said braking-backing command signal alternatively generated from said drive control means and said backing reference signal generated from said backing reference signal generating means are supplied, said discriminating means discriminating whether said control element of said transmitter side is in a braking region or a backing region; and a braking-reverse rotation drive means for carrying out braking or reverse rotation of said motor depending upon an output of said discriminating means.
Claim 2
Dependent Claim
169 words
A motor control device comprising: a drive control means for receiving a command signal from a transmitter to alternatively generate a forward command signal corresponding to a forward command region of a control element on said transmitter side and a braking-backing command signal corresponding to a braking-backing command region of said control element; a normal rotation drive means for rotating a motor in a normal direction in response to said forward command signal alternatively generated from said drive control means; a backing reference signal generating means for generating an adjustable backing reference signal; a discriminating means to which said braking-backing command signal alternatively generated from said drive control means and said backing reference signal generated from said backing reference signal generating means are supplied, said discriminating means discriminating whether said control element of said transmitter side is in a braking region or a backing region; and a braking-reverse rotation drive means for carrying out braking or reverse rotation of said motor depending upon an output of said discriminating means.
Claim 3
Dependent Claim
35 words
A motor control device as defined in claim 1, wherein said discriminating includes an operation switching means for carrying out braking or reverse rotation of said motor depending upon said output of said discriminating means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-17 | 1991-02-16 | 1991-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-17 | 1995-02-16 | 1995-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-17 | 1999-02-16 | 1999-08-18 | $7700.00 | Window Closed / Lapsed |