công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
|
MCF5235 bảng dữ liệu(PDF) 5 Page - Freescale Semiconductor, Inc |
|
MCF5235 bảng dữ liệu(HTML) 5 Page - Freescale Semiconductor, Inc |
5 / 44 page Target Motor Theory DC Motor with Speed and Current Closed Loops, Driven by eTPU on MCF523x, Rev. 0 Freescale Semiconductor 5 Figure 3. 2-Phase DC Motor Power Stage (H-bridge) 2.1.1 Speed And Current Control The motor speed depends on the amplitude of the applied voltage. The amplitude of the applied voltage is adjusted using the PWM technique. The required speed is controlled by a speed controller, which is implemented as a conventional proportional-integral (PI) controller. The difference between the actual and required speeds is input to the PI controller which then, based on this difference, controllers the required DC-bus current. The required DC-bus current is controlled by a current controller, which is also implemented as a conventional proportional-integral (PI) controller. The difference between the actual and required DC-bus current is input to the PI controller which then, based on this difference, controls the duty cycle of the PWM pulses, which correspond to the voltage amplitude required to maintain the desired speed. The current controller, which is the inner-loop controller, is updated more frequently, for example every PWM period, compared to the speed controller, which is the outer-loop controller. The speed controller, as well as the current controller, calculates the PI algorithm given in the equation below: After transforming the equation into a discrete time domain using an integral approximation with the Backward Euler method, we get the following equations for the numerical PI controller calculation: ut () K c et () 1 TI ----- e τ () τ d 0 t ∫ + = uk () u P k () u I k () + = uP k () K c ek () ⋅ = uI k () u I k 1 – () K c + T TI ----- ek () ⋅ = |
Số phần tương tự - MCF5235 |
|
Mô tả tương tự - MCF5235 |
|
|
Link URL |
Chính sách bảo mật |
ALLDATASHEET.VN |
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không? [ DONATE ] |
Alldatasheet là | Quảng cáo | Liên lạc với chúng tôi | Chính sách bảo mật | Trao đổi link | Tìm kiếm theo nhà sản xuất All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |