Direct-current motor mechanical characteristic and control strategy experimental device and working method

Abstract

The invention discloses a direct-current motor mechanical characteristic and control strategy experimental device and a working method. The rotating speed and torque data in the operation process of the experimental motor can be collected regularly; a function graph is drawn, a variable resistor is connected in series in an armature circuit of the experimental motor; two ends of the armature circuit and two ends of the excitation circuit are connected with a variable voltage source; the load end of the experimental motor is connected with a hysteresis brake; the load of the experimental motor,the resistance value of the armature circuit, the voltages at the two ends of the armature circuit and the voltages at the two ends of the excitation circuit can be respectively adjusted in the experimental process, the operating state of the experimental motor is changed, and the influence of the change of the variables on the mechanical characteristics of the motor is verified by observing a function graph between the rotating speed and the torque on upper computer software. An upper computer calculates a control strategy according to the rotating speed and torque information acquired by amicrocontroller, and the microcontroller controls the rotating speed of the experimental motor according to a calculation result, so that the control effect of the control strategy is verified.

Description

technical field [0001] The invention relates to the field of motor experiment demonstration equipment, in particular to an experimental device and working method for the mechanical characteristics and control strategy of a DC motor. Background technique [0002] The mechanical characteristics of the DC motor and the control strategy of the motor will be introduced in courses such as "Electrical Engineering" and "Servo Motion Control" in colleges and universities. This part of knowledge is relatively abstract and difficult to understand, and requires a safe teaching demonstration device that can visually demonstrate and verify various knowledge points. The existing teaching and demonstration equipment using the mechanical characteristics of DC motors is bulky and consumes a lot of power. Students operate strong electricity, which poses safety hazards. The programming of many existing teaching equipment is inconvenient, and the ability of students to improve during the experi...

AI Technical Summary

Problems solved by technology

This part of knowledge is relatively abstract and difficult to understand, and requires a safe teaching demonstration device that can demonstrate and verify various knowledge points intuitively

The existing teaching and demonstration equipment using the mechanical characteristics of DC motors is large in size and consumes a lot of power. Students operate strong electricity, which poses safety hazards

Many existing teaching equipment are inconvenient to program, and students have limited ability to improve during the experiment

There are also some teaching demonstration equipment with high integration and encapsulation, and the operability of students is not strong, which affects the experimental effect

Images