Swinging drive control apparatus and method
AssigneesKunshan Lucky Child Product Co., Ltd., Xuan Zhu
InventorsXueming Zou, Xuan Zhu
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Abstract
Disclosed is a swinging drive control apparatus, including a controller and a motor, where the controller detects a counter-electromotive force of the motor and drives the motor according to the detection result. Also disclosed is a corresponding method, including: measuring a counter-electromotive force of a motor in a previous cycle; and comparing a maximum counter-electromotive force value with a preset value, and calculating a PWM pulse duty factor in a next cycle. By directly detecting the counter-electromotive force of the motor without using a sensor, the present invention implements swinging frequency and phase tracking as well as swinging amplitude control, and simplifies a control system.
Claims12
A swinging drive control apparatus, comprising a controller and a motor, wherein,
- the controller detects a counter-electromotive force of the motor and drives the motor according to the detected result, wherein,
- the controller calculates a PWM (Pulse Width Modulation) pulse duty factor in a next cycle by comparing a maximum counter-electromotive force value of the motor in a previous cycle with a preset value, so as to control the motor using a PWM method.
A swinging drive control method, comprising the following steps:
- detecting a counter-electromotive force of a motor in a previous cycle;
- and
- comparing a maximum counter-electromotive force value with a preset value, and calculating a PWM (Pulse Width Modulation) pulse duty factor in a next cycle, and
- controlling the motor using a PWM method.
Dependencies are inferred from the claim text.