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Motor control system

A technology of motor control and motor controller, which is applied in the direction of control system, general control system, control/regulation system, etc., can solve the problem of connecting and controlling multiple motor design problems and costs, and achieve the effect of reducing system overhead

Inactive Publication Date: 2006-04-19
HEWLETT PACKARD DEV CO LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Unbalanced winding motors and control systems offer the potential for low-cost motion control designs, but it does not address the design issues and costs of connecting and controlling multiple motors in a given application

Method used

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  • Motor control system
  • Motor control system
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Examples

Experimental program
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Embodiment Construction

[0034] in Figure 1A The schematic block diagram of exemplifies a typical embodiment of the present invention. The host controller 10 issues motor commands, and receives status data from the motor 20 through the motor controller 50. The controller includes a control logic 60, a motor drive 70, and a signal conditioning circuit 80. The control logic 60 receives a motor command from the host controller and converts it into a motor drive signal to control the motor drive 70.

[0035] A preferred embodiment of the present invention is to integrate the control logic 60, the motor drive 70 and the signal conditioning circuit 80 into an integrated circuit chip, such as using dual CMOS technology, or as a hybrid circuit, such as a CMOS circuit for implementing logic and Processor function, a bipolar circuit realizes the motor drive function. In a typical implementation, the implementation of the control logic includes some form of microprocessor.

[0036] In the preferred embodiment, the ...

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Abstract

A motor controller circuit for controlling an electric motor in response to motor commands from a host controller. The controller circuit includes a motor driver circuit for providing motor driver signals to the motor in response to motor driver commands. A control logic circuit is responsive to command words from the host controller for generating motor drive control signals, the controller has an associated motor identification, each command word having associated therewith a motor identification portion and a motor command portion. The control logic compares the motor identification portion of the command word to the motor identification, and converting the motor command portion into motor driver control signals if the motor identification portion corresponds to the motor identification. Multiple motors can be interfaced to a host controller, either in parallel or in a cascaded manner. Each motor has an unique address, and can interpret a command word and execute a command addressed to the motor. Each motor can also report its status and completion of a command.

Description

Technical field [0001] The invention relates to the connection and control of motors. Background technique [0002] DC motors are small in size, low in cost, and high in efficiency, and are commonly used in open-loop control environments. On the other hand, stepping motors are easy to control, but the cost is too high. If you want to perform precise control of speed and / or position, you must use a more expensive closed-loop servo control system, which typically requires position sensors and control circuits. Optical or magnetic encoders are usually used to provide motion and speed information to the motor control circuit. [0003] In order to reduce costs, US Patent No. 5,869,939 describes a DC motor with unbalanced windings and a control system that detects the current difference through each winding that detects rotation. This detection signal is used to control the movement and position of the motor. U.S. Patent No. 6,054,787 also describes a motor in whic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P7/00H02P5/00G05B19/18
CPCG05B2219/34236G05B2219/43164G05B19/18G05B2219/34245
Inventor C·C·罗
Owner HEWLETT PACKARD DEV CO LP