FSMC-based multi-stepping motor driving method, circuit and device
A technology of stepping motors and driving circuits, which is applied in the direction of motor control, motor generator control, electrical components, etc., can solve the problems of relatively demanding requirements, and achieve the effect of occupying less resources of single-chip microcomputers, reducing complexity, and reducing costs
Pending Publication Date: 2019-07-16
苏州国科视清医疗科技有限公司
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Problems solved by technology
[0003] The traditional stepper motor drive circuit requires a separate timer and several IO ports to drive each motor. When there are multiple motors in the device, it is necessary to use a microcontroller with more IO ports to achieve multiple The drive of a motor has strict requirements on the IO port resources of the microcontroller
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[0036] Below, the present invention will be further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of not conflicting, the various embodiments described below or the technical features can be combined arbitrarily to form new embodiments. .
[0037] FSMC-based multi-stepper motor drive circuit, such as figure 1 As shown, including FSMC controller, chip select circuit, decoding latch circuit, cache circuit;
[0038] The FSMC controller is electrically connected to the chip selection circuit and several decoding latch circuits respectively; the chip selection circuit is also electrically connected to several decoding latch circuits; the decoding latch circuit is also electrically connected to the cache circuit; the cache circuit, FSMC control The device is electrically connected to the stepper motor driver; among them,
[0039] The chip selection circuit is used to receive the chip selectio...
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The invention provides an FSMC-based multi-stepping motor driving circuit. The FSMC-based multi-stepping motor driving circuit comprises an FSMC controller, a chip selection circuit, a coding lockingcircuit and a buffer circuit. The invention also relates to an FSMC-based multi-stepping motor driving method and device. The function of a stepping motor driver is configured according to a writing instruction of the FSMC controller, an acceleration and reduction curve of the stepping motor is programmed by configuring internal storage of the FSMC controller, and the software programming complexity is effectively reduced. Driving control of a plurality of stepping motors is achieved, a few singlechip microcomputer resources are occupied, the requirement of input-output end sources of a singlechip microcomputer is reduced, so that the cost is reduced. Moreover, the purpose of closed-looped control is achieved through feeding back a motion state of the stepping motor by an external photoelectric switch, and accurate positioning of the stepping motor is achieved.
Description
technical field [0001] The invention relates to a stepping motor driving circuit, in particular to a FSMC-based multi-stepping motor driving method, circuit and device. Background technique [0002] In many practical applications, stepper motors are widely used as important executive components, and the data volume of stepper motors in each device ranges from a few to dozens. The biggest characteristic of the control of the stepper motor is that it is controlled by the input pulse signal, that is, the total rotation angle of the motor is determined by the number of input pulses, and the speed of the motor is determined by the frequency of the pulse signal. On the basis of research and analysis of the principle of PWM pulse signal control stepper motor, it is required to control stepper motor startup, acceleration, high speed, deceleration and simultaneous braking after reaching different target positions in practical applications. The closed-loop control algorithm used in it...
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IPC IPC(8): H02P8/40
CPCH02P8/40H02P2207/00
Inventor 任谊文周林管凯捷姚康刘航付威威
Owner 苏州国科视清医疗科技有限公司