Apparatus for controlling motor

• US 20040232864A1
• Filed: 05/19/2004
• Published: 11/25/2004
• Est. Priority Date: 05/23/2003
• Status: Abandoned Application

• Current Assignee: Calsonic Kansei Corporation
• Original Assignee: Calsonic Kansei Corporation
• Inventors: Sunaga, Hideki, Tanaka, Kaoru, Araki, Futoshi
• Application Number:
  US10/850,486
• Publication Number:
  US 20040232864A1
• Time in Patent Office: Days
• US Class Current: 318/434
• CPC Class Codes: H02P 7/29 using pulse modulation

Abstract

An apparatus for controlling motor to drive an electric motor type actuator (30A) having an electric motor (30), including a serial data communication portion (53 and 55); a reception-processing portion (61) for receiving information which is addressed to its own address and supplied from a host device (100) via the serial data communication portion (53 and 55); and means for changing electric power supplied to motor (56, 67 and 73) for changing electric power supplied to the electric motor (30) based on information for designating motor-operating condition included in the received information.

Claims

1. An apparatus for controlling motor to drive an electric motor type actuator having an electric motor, comprising:

a serial data communication portion;

a reception-processing portion for receiving information which is addressed to its own address and supplied from a host device via said serial data communication portion; and

means for changing electric power supplied to said electric motor based on information for designating motor-operating condition included in the received information.

2. The apparatus for controlling motor according to claim 1, wherein said means for changing electric power supplied to motor includes an H-bridge driving processing portion.

3. The apparatus for controlling motor according to claim 1, wherein said means for changing electric power supplied to motor changes the electric power supplied to said electric motor by PWM control.

4. The apparatus for controlling motor according to claim 3, wherein said means for changing electric power supplied to motor includes a correspondence table between said information for designating motor-operating condition and a duty ratio, and limits the electric power supplied to said electric motor by setting the duty ratio corresponding to said information for designating motor-operating condition as an upper limit of the electric power supplied to said electric motor.

5. An apparatus for controlling motor, comprising:

a serial data communication portion;

a reception-processing portion for receiving information which is addressed to its own address and supplied from a host device via said serial data communication portion;

an A/D converting portion for converting voltage corresponding to a present position of an object to be controlled supplied from a position detecting portion into present position data having n-bit;

an electric motor type actuator; and

an actuator driving controlling portion for driving said electric motor type actuator based on a deviation between data on a target value having n-bit included in the received information and said present position data having the n-bit such that the position of said object to be controlled becomes a position of said target value, wherein

said actuator driving controlling portion is provided with means for controlling deceleration which, when the deviation between said target value data having the n-bit and said present position data having the n-bit becomes less than a previously set judgment value of starting of deceleration control, drives said electric motor type actuator by PWM control with a duty ratio previously set corresponding to said deviation, and rotates and drives the electric motor type actuator in an ON-duty period within a PWM cycle, and applies a regeneration brake to said electric motor type actuator in an OFF-duty period within the PWM cycle.

6. The apparatus for controlling motor according to claim 5, wherein said electric motor type actuator is driven via a H-type bridge circuit, and is braked by shunting a coil of the electric motor type actuator via a semiconductor switching element structuring said bridge circuit.

7. The apparatus for controlling motor according to claim 5, wherein said duty ratio is set to become smaller as said deviation becomes smaller.

8. The apparatus for controlling motor according to claim 5, wherein the duty ratio previously set corresponding to said deviation is stored previously in a nonvolatile memory as a deviation to duty ratio-correspondence table.

9. The apparatus for controlling motor according to claim 8, wherein said nonvolatile memory is an electrically-rewritable memory.

10. The apparatus for controlling motor according to claim 5, wherein said actuator driving controlling portion applies the regeneration brake to said electric motor type actuator in the OFF-duty period within said PWM cycle when information on request for brake-control is supplied via said reception-processing portion.

11. An apparatus for controlling motor, comprising:

an H-bridge circuit portion which has a pair of motor-connecting terminals and which is structured by connecting four switching elements in a H-type bridge connection;

a serial data communication portion for carrying out serial data communication with a host device;

a reception-processing portion for receiving information which is addressed to its own address and supplied from the host device via said serial data communication portion; and

an H-bridge driving processing portion for generating a PWM signal having a duty ratio designated by duty-designating information included in the information received by said reception-processing portion to drive each of the switching elements structuring said H-bridge circuit portion.

12. An apparatus for controlling motor, comprising:

an H-bridge circuit portion which has a pair of motor-connecting terminals and which is structured by connecting four switching elements in a H-type bridge connection;

a serial data communication portion for carrying out serial data communication with a host device;

a reception-processing portion for receiving information which is addressed to its own address and supplied from the host device via said serial data communication portion; and

an H-bridge driving processing portion for setting a duty ratio based on motor rotational speed-designating information which is at least one bit included in the information received by said reception-processing portion, and generating a PWM signal having the set duty ratio to drive each of the switching elements structuring said H-bridge circuit portion.

13. An apparatus for controlling motor, comprising:

an H-bridge circuit portion which has a pair of motor-connecting terminals and which is structured by connecting four switching elements in a H-type bridge connection;

a serial data communication portion for carrying out serial data communication with a host device;

a reception-processing portion for receiving information which is addressed to its own address and supplied from the host device via said serial data communication portion; and

an H-bridge driving processing portion for increasing or decreasing a duty ratio by only a value previously set based on a request for increasing electric power to be supplied to motor or a request for decreasing electric power to be supplied to motor included in the information received by said reception-processing portion to set a new duty ratio, and for generating a PWM signal having the set duty ratio to drive each of the switching elements structuring said H-bridge circuit portion.

14. An apparatus for controlling motor, comprising:

an H-bridge circuit portion which has a pair of motor-connecting terminals and which is structured by connecting four switching elements in a H-type bridge connection;

a serial data communication portion for carrying out serial data communication with a host device;

a reception-processing portion for receiving information which is addressed to its own address and supplied from the host device via said serial data communication portion; and

an H-bridge driving processing portion for comparing motor rotational speed-designating information included in the information received by said reception-processing portion with a motor rotational speed signal supplied from a motor rotational speed-detecting portion to set a duty ratio of a PWM signal, and for generating a PWM signal having the set duty ratio to drive each of the switching elements structuring said H-bridge circuit portion.

15. An apparatus for controlling motor, comprising:

an H-bridge circuit portion which has a pair of motor-connecting terminals and which is structured by connecting four switching elements in a H-type bridge connection;

a serial data communication portion for carrying out serial data communication with a host device;

a reception-processing portion for receiving information which is addressed to its own address and supplied from the host device via said serial data communication portion; and

an H-bridge driving processing portion for comparing information for designating target position of object to be controlled included in the information received by said reception-processing portion with information on present position of object to be controlled supplied from a position detecting portion of object to be controlled, to drive each of the switching elements structuring said H-bridge circuit portion based on a result of the comparison, when an actuator position-control mode is designated on the basis of information on designating control mode included in the information received by said reception-processing portion, and for driving each of the switching elements structuring said H-bridge circuit portion based on information on designation relating to rotational speed of motor included in the information received by said reception-processing portion, when a motor-rotational speed control mode is designated on the basis of the information on designating control mode included in the information received by said reception-processing portion.