Internal-model-based sliding mode control method capable of inhibiting mismatching disturbance of permanent magnet linear motor

A permanent magnet linear motor, speed control technology, used in motor control, motor generator control, AC motor control and other directions, can solve the problems of complex working conditions, reduced motor dynamic performance and robust stability performance, and can not be eliminated. Effect

CN106849791AInactive Publication Date: 2017-06-13JIANGSU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-06-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an internal-model-based sliding mode control method capable of inhibiting mismatching disturbance of a permanent magnet linear motor. The internal-model-based sliding mode control method includes the steps that a five-phase fault-tolerant permanent magnet cylindrical linear motor model with mismatching disturbance is set up; an internal model controller of an ideal system is designed by adopting an internal model control strategy; based on the motor second-order mathematic model, mismatching disturbance observers are designed to observe mismatching disturbance of a motor system; two kinds of mismatching-disturbance-based observers are designed, the sliding mode control rules (the symbol is shown in the description) of the system under the two methods are solved; the expression (the symbol is shown in the description) is equivalently transformed to contain system mismatching disturbance errors, the Lyapunov function is selected, and the obtained sliding mode control rules (the symbol is shown in the description), a d-axis voltage set value (the symbol is shown in the description), an x-axis voltage set value (the symbol is shown in the description) and a y-axis voltage set value (the symbol is shown in the description) are used for achieving high-performance operation of the internal-model-based sliding mode control system capable of inhibiting mismatching disturbance of the fault-tolerant permanent magnet cylindrical linear motor by means of a voltage source inverter through a CPWM modulation method, wherein the d-axis voltage set value, the x-axis voltage set value and the y-axis voltage set value are output by a PI current regulator.
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Description

technical field

[0001] The invention relates to a sliding mode speed control method for suppressing the unmatched disturbance of a permanent magnet synchronous motor, in particular to an internal model-based sliding mode speed control (IM-SMC) method for suppressing the unmatched disturbance of a permanent magnet linear motor. It is suitable for occasions that require high dynamic performance and robust stability of the motor, such as aerospace, ship propulsion, and electric vehicles. Background technique

[0002] The vehicle suspension determines the handling stability, ride comfort and ride comfort of the vehicle, and is one of the most important related components in the vehicle's driving performance. Compared with the traditional passive suspension system, the electromagnetic active suspension system can adjust the body characteristics in real time according to the current driving conditions of the vehicle, thereby improving the driving performance of the vehicle. As th...

Examples

Embodiment Construction

[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0053] In order to more simply and clearly illustrate the beneficial effect of the sliding mode speed control method based on the internal model of the present invention on suppressing the mismatch disturbance of the fault-tolerant permanent magnet linear motor, a specific five-phase fault-tolerant permanent magnet linear motor will be combined below. Detailed description.

[0054] Step 1. Establish a five-phase fault-tolerant permanent magnet cylindrical linear motor model with mismatched disturbances.

[0055] Such as figure 1 As shown, the structural diagram of the fault-tolerant permanent magnet cylindrical linear motor of the embodiment of the present invention is a five-phase fault-tolerant permanent magnet cylindrical linear motor with 20 / 18 poles. The winding of the ...