H bridge driver-based motor controller

A motor controller, motor control technology, applied in motor control, control system, electrical components, etc., can solve the problems of complex control signal calculation, complex hardware, inflexible data processing, etc., to achieve convenient pulse width adjustment, small size, The effect of reducing computation time and hardware cost

Inactive Publication Date: 2011-06-29
EAST CHINA INST OF OPTOELECTRONICS INTEGRATEDDEVICE
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  • Description
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Problems solved by technology

[0004] The purpose of the present invention is to provide a motor controller based on an H-bridge driver composed of integrated circuits in order to

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  • H bridge driver-based motor controller
  • H bridge driver-based motor controller
  • H bridge driver-based motor controller

Examples

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Embodiment Construction

[0026] figure 1 It is the overall circuit block diagram of the motor controller based on H-bridge driver, which includes edge detection unit, chip select decoding unit, control logic unit, intelligent data interface internal and external data conversion unit, read and write logic unit and 3 programmable motor control circuits Channel composition. Among them, the chip selection decoding unit is responsible for decoding the address lines to generate appropriate register selection signals for each module to use when processing data reading; the control logic unit realizes the sampling of external network pins and provides different operations for each module , such as read and write control; the read and write logic unit realizes the read and write operations of internal data. Further descriptions of the functions of the other logic modules are provided below.

[0027] see figure 2 , the programmable edge detection circuit starts the signal detection circuit after receiving t...

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Abstract

The invention relates to an H bridge driver-based motor controller formed by an integrated circuit. The motor controller comprises an intelligent data interface circuit, a signal detection circuit, a chip selection decoding circuit, a logic control circuit and 3 motor control channels, wherein information on width of control pulse, dead zone, the lengths of positive and negative pulses and the like of the motor is acquired by analyzing and calculating the data of a write-in interface circuit; input information required by a pulse width modulation circuit is generated by combining a frequency division factor given by a programmable frequency division circuit; and a pulse width modulation state machine circuit outputs digital signals required previously to a H bridge driver according to the information. Compared with an external microcomputer (or a controller), the H bridge driver-based motor controller can obviously lower operation time and hardware cost; a built-in high-resolution counter can provide extremely smooth and sensitive motor drive signals; and the H bridge driver-based motor controller can adapt to different external data widths by combining the intelligent data interface circuit, and the programmable frequency division circuit can provide wider modulation signal periods and widths.

Description

technical field [0001] The invention belongs to the technical field of semiconductor integrated circuits, and relates to a motor controller composed of integrated circuits and based on an H-bridge driver. Background technique [0002] H-bridge drive circuits are widely used in the drive of stepper motors, AC motors and DC motors. The excitation winding of permanent magnet stepper motor or hybrid stepper motor must be powered by bipolar power supply, and such winding power supply needs to be driven by H bridge. The H-bridge driver needs digital signals for control, and mainly controls the motor speed through pulse width modulation signals. During the control process, the positive and negative pulse digital signals and dead zone control required by the H-bridge must be provided. [0003] At present, single-chip microcomputers or single-chip microcomputers plus digital chips are generally used for data output control. During the control process, single-chip microcomputers dire...

Claims

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Application Information

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IPC IPC(8): H02P29/00
Inventor 陈远金汪健鞠莉娜余向阳王少轩刘庆飞
Owner EAST CHINA INST OF OPTOELECTRONICS INTEGRATEDDEVICE
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