Closed-loop test apparatus of control and drive circuits of stepping motor
A stepper motor and drive circuit technology, applied in the direction of motor generator testing, electrical testing/monitoring, etc., can solve problems such as damage to the stepping motor drive mechanism, failure of the stepping motor, time-consuming and labor-intensive, etc., to avoid stepping Motor failure, to achieve the effect of error correction
Inactive Publication Date: 2012-06-27
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology
[0004] In order to solve the problems existing in the prior art, the present invention provides a closed-loop test device for stepper motor control and drive circuit, which solves the problem of time-consuming and labor-intensive methods in the prior art, and easily leads to failure of the stepper motor, or Problems that cause damage to the stepper motor drive mechanism
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[0010] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0011] As shown in Figure 1, a kind of closed-loop test device of stepper motor control and drive circuit, this device comprises: stepper motor load simulation circuit, voltage adjustment circuit, bus isolation circuit and FPGA circuit, described stepper motor load simulation circuit Connect with the system under test. The system under test is composed of three four-phase stepper motor control and drive circuits. Each stepper motor uses two Hall sensors as left and right positioning devices. The control mode of the stepper motor is four-phase Eight beats, the step pulse frequency is 200Hz; the system under test provides the stepper motor drive output signal and power supply for the stepper motor control and drive circuit closed-loop test device;
[0012] The stepper motor load simulation circuit receives the signal sent by the system under tes...
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The invention, which belongs to the industrial automation control field, relates to a closed-loop test apparatus of control and drive circuits of a stepping motor. The apparatus comprises a stepping motor load simulation circuit, a voltage-regulating circuit, a bus isolating circuit, and an FPGA circuit. The stepping motor load simulation circuit is connected with a tested system so as to test drive capability and power consumption of the tested system. The voltage-regulating circuit is connected with the stepping motor load simulation circuit so as to adjust voltages in the test apparatus. The bus isolating circuit is connected with the voltage-regulating circuit so as to prevent other parts from being influenced by damage of one part. And the FPGA circuit is connected with the bus isolating circuit so as to carry out collection analyzing and feedback on a driving pulse signal. According to the test apparatus provided in the invention, tests on the drive capability of the tested system and power consumption of the control and drive circuits of the stepping motor are realized, so that a problem of stepping motor failure caused by a fault of a tested system when an actual stepping motor is utilized can be solved.
Description
technical field [0001] The invention belongs to the field of industrial automation control and relates to a closed-loop testing technology for stepping motor control and driving circuits. Background technique [0002] Stepper motor is an electromagnetic incremental motion actuator, which converts electrical pulse input into mechanical step angle output. The start, stop or reverse of the stepper motor is controlled by pulse signals. Controlling the number of input pulses can realize the control of the motor rotation angle. Adjusting the frequency of the input pulse can realize the control of the running speed of the motor. Therefore, the operating speed of the stepper motor can be smoothly adjusted within a fairly wide range. Its angular displacement (or linear displacement) error will not accumulate for a long time without loss of step, and the repeatability is high. It is especially suitable for open-loop digital control systems with simple structure and considerable pos...
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IPC IPC(8): G05B23/02G01R31/34
Inventor 王永成刘南南孙亮
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI