TEAM BG0090系統(tǒng)卡件
電源模塊從產(chǎn)生直流鏈路電路電壓交流輸入電壓。由此，伺服驅(qū)動(dòng)模塊生成三相系統(tǒng)，該三相系統(tǒng)根據(jù)振幅、頻率和階段根據(jù)電流，這適用于MAC伺服電機(jī)轉(zhuǎn)子位置和所需速度。
受控三相系統(tǒng)與伺服電機(jī)的受控運(yùn)行狀態(tài)根據(jù)
符合以下標(biāo)準(zhǔn)：扭矩：伺服系統(tǒng)定子中三相系統(tǒng)的電流幅值
電機(jī)通過永磁勵(lì)磁轉(zhuǎn)子的磁場(chǎng)確定產(chǎn)生的轉(zhuǎn)矩。這是由于系統(tǒng)速度偏差造成的控制器。
速度：三相系統(tǒng)的頻率決定了伺服電機(jī)。轉(zhuǎn)子的位置和頻率由轉(zhuǎn)子位置編碼器的信號(hào)（BLC信號(hào)），取決于所需的磁場(chǎng)位置與轉(zhuǎn)子和定子電流的位置。扭矩方向：三相系統(tǒng)和轉(zhuǎn)子磁場(chǎng)之間的相位關(guān)系決定了轉(zhuǎn)矩的方向
導(dǎo)出根據(jù)速度控制器的系統(tǒng)偏差的極性。
控制電路信號(hào)調(diào)節(jié)：速度控制器將速度設(shè)定值與實(shí)際值進(jìn)行比較從中生成電流設(shè)定點(diǎn)，并將其饋送至方向電流控制器（參見圖5）。
根據(jù)轉(zhuǎn)子位置（通過BLC信號(hào)從轉(zhuǎn)子位置編碼器），三個(gè)定子的電流方向?qū)@組進(jìn)行控制，使定子中產(chǎn)生的電流處于其相對(duì)于轉(zhuǎn)子的磁通量是最有利的。這該關(guān)系確保扭矩與電機(jī)電流成比例。
電機(jī)電流由電流控制器控制。這與方向電流控制器，以控制三個(gè)以便獲得具有受控幅度、頻率和相位的三相系統(tǒng)。電流控制器的輸出信號(hào)在脈沖寬度內(nèi)定時(shí)并經(jīng)由無電勢(shì)驅(qū)動(dòng)器級(jí)放大。這個(gè)用于驅(qū)動(dòng)三相電橋的放大信號(hào)來自六個(gè)功率晶體管。MAC三相伺服電機(jī)是永久勵(lì)磁同步電機(jī)，由以下主要子組件組成：–三相定子–永久勵(lì)磁轉(zhuǎn)子–可選電動(dòng)釋放制動(dòng)器–可選單獨(dú)軸流風(fēng)機(jī)，用于表面通風(fēng)
The power supply module generates the DC link circuit voltage from the
AC input voltage. From this the servo drive module generates a threephase system that is controlled according to amplitude, frequency and
phase. This is applied to the MAC servo motor according to the current
rotor position and the desired speed.
The relationship between the controlled three-phase system and the
controlled operating states of the servo motor is established according
to the following criteria:
Torque:
The current amplitude of the three-phase system in the stator of the servo
motor determines the resulting torque via the field of the permanentmagnet-excited rotor. It results from the system deviation of the speed
controller.
Speed:
The frequency of the three-phase system determines the speed of the
servo motor. The rotor’s position and frequency is derived from the
signals of the rotor position encoder (BLC signals), depending on the
required synchronism between the position of the magnetic field of the
rotor and the position of the stator current.Direction of torque:
The phase relationship between the three-phase system and the magnetic field of the rotor determines the direction of the torque and is derived
from the polarity of the system deviation of the speed controller.
Control circuit signal conditioning:
The speed controller compares the speed set-point and actual-value and
from them generates the current set-point that is fed to the directional
current controller via a limiter circuit (see Fig. 5).
Depending on the rotor position (signalled via the BLC signals from the
rotor position encoder), the direction of the current for the three stator
windings is controlled so that the resulting current flow in the stator is at
its most favourable in relation to the magnetic flux of the rotor. This
relationship ensures that the torque is proportional to the motor current.
The motor current is controlled by a current controller. This is linked to the
directional current controller in order to control the current in the three
phases so as to obtain a three-phase system having controlled amplitude, frequency and phase.
The output signals of the current controller are timed in the pulse-width
modulation stage and amplified via potential-free driver stages. The
amplified signals used for driving the three-phase bridge constructed
from six power transistors.The MAC three-phase servo motor is a permanently-excited synchronous motor that is made up of the following main sub-assemblies:
– three-phase stator
– permanently-excited rotor
– optional electrically-released brake
– optional separate axial fan for surface ventilation
