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Method for identifying permanent magnetic synchronous motor load parameters

A permanent magnet synchronization and parameter identification technology, applied in the direction of single motor speed/torque control, electronic commutator, etc., can solve the problems of unsatisfactory identification and difficulty in application, and achieve the effect of strong real-time performance and enhanced anti-disturbance ability

Active Publication Date: 2013-06-26
NINGBO CHIKEWEI ELECTRONICS CO LTD
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AI Technical Summary

Problems solved by technology

This method requires that the speed of the motor has a dynamic process of linear change, assuming that the load torque is constant, and requires a complete acceleration and deceleration process, which cannot satisfy the real-time online identification of the load torque and moment of inertia information of the motor; Insensitive, difficult to apply to systems with complex load parameters such as self-balancing electric two-wheeled vehicles

Method used

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  • Method for identifying permanent magnetic synchronous motor load parameters
  • Method for identifying permanent magnetic synchronous motor load parameters
  • Method for identifying permanent magnetic synchronous motor load parameters

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] Such as figure 1 As shown, the load parameter identification method of a permanent magnet synchronous motor according to an embodiment of the present invention includes the following steps:

[0017] In step S101, the input current and rotor position of the permanent magnet synchronous motor are detected in real time by the current sensor and the position sensor respectively, and the detection results are sent to the main controller; the position sensor can be a linear Hall sensor;

[0018] Step S102, the main controller calculates the output electromagnetic torque of the permanent magnet synchronous motor according to the current detection result, and calculates the rotational speed and acceleration of the permanent magnet synchronous motor according to the rotor position detection result;

[0019] Step S103 , the main controller conducts online identification...

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Abstract

The invention discloses a method for identifying permanent magnetic synchronous motor load parameters. The method includes that input current and rotor positions of a permanent magnetic synchronous motor are detected in real time respectively through a current sensor and a position sensor, and a detecting result is sent to a main controller; the main controller calculates output electromagnetic torque of the permanent magnetic synchronous motor according to a current detecting result, and rotation speed and acceleration of the permanent magnetic synchronous motor according to a rotor position detecting result; and the main controller conducts online identification on rotational inertia and load torque of the permanent magnetic synchronous motor through a recursive algorithm of a least square method according to the calculated output electromagnetic torque and acceleration. By means of the load parameter identifying method of the least square method, the rotational inertia and the load torque of the permanent magnetic synchronous motor can be identified online, and a correct identification result can be obtained.

Description

technical field [0001] The invention relates to a load parameter identification method of a permanent magnet synchronous motor. Background technique [0002] Self-balancing electric two-wheeled vehicle is a kind of green and environment-friendly personal transportation. It is powered by batteries. Its center of gravity is placed upside down above the wheel axle. Magnetic synchronous motor, self-balancing electric two-wheel vehicle structure such as figure 2 shown. In the uncontrolled state, the system is an unstable system. When the system is working normally, the controller receives the information from the attitude sensor of the vehicle body, and controls the action of the servo motor according to the working principle of the inverted pendulum system, so as to maintain the vehicle body in a dynamic equilibrium state. When the overall center of gravity of the driver and the vehicle tilts forward, the built-in servo motor in the body will generate a forward force. On the ...

Claims

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Application Information

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IPC IPC(8): H02P6/08H02P6/16
Inventor 王建宽陈养彬兰天方继勇
Owner NINGBO CHIKEWEI ELECTRONICS CO LTD
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