正如“ACScontrol”所言,Baldor直线电机和直线工作台的手册上:
1. 很多地方标有类似于“Acceleration To 4.5 g’s (44 m/s2)”这样的字样
2. 在算例中也有诸如“a = 4.14 g’s”,甚至“a = 0.77 g’s”的字样
3. 在关于各种类型的直线电机的加速能力的描述上写到“Brushless < 10g’s Induction < 1g Stepper < 1g”
4. 尤其是在推力计算中用到“Force Required = Mass of Load x Acceleration (g’s) x 9.81”
综合上述情况可以得出的结论是:g‘s 之 s 只是表示复数,没有任何关于时间的含义。
至于直线电机什么参数重要,也不妨参看Baldor有铁心平板式直线电机的参数表:
General:
Continuous Force Lbs [N]
Continuous Current Amps
Peak Force @ 10% Duty Lbs [N]
Peak Current @ 10% Duty Amps
Continuous Power Watts ————这条是指 Continuous Power Dissipations 而非拖动电机的功率概念
Attractive Force Lbs [N]
Mechanical:
No. of Poles
Coil Assembly Length in [mm]
Coil Assembly Weight Lbs [kg]
Magnet Track Weight Lbs/inch [kg/m]
Electrical:
Force Constant Ph - Ph Lbs/Amp [N/Amp] ————若为三相星接绕组,这条不必赘述Ph - Ph
Back EMF Constant Ph - Ph V/in/sec [V/m/sec]
Ph-Ph Resistance @ 25°C Ohms
Ph-Ph Resistance @ 125°C Ohms
Thermal Resistance W/deg C
Inductance Ph - Ph mH
Electrical Time Constant msec
Km Motor Constant Lbs/√W [N/√W] ————与Continuous Force 和 Continuous Power Dissipations 有关
其中“秒”都会写做sec