1、 Speed comparison:

速度方面直線電機具有相當(dāng)大的優(yōu)勢，直線電機速度達(dá)到300m/min，加速度達(dá)到10g；滾珠絲杠速度為120m/min，加速度為1.5g。從速度上和加速度的對比上，直線電機具有相當(dāng)大的優(yōu)勢，而且直線電機在成功解決發(fā)熱問題后速度還會進(jìn)一步提高，而“旋轉(zhuǎn)伺服電機+滾珠絲杠”在速度上卻受到限制很難再提高較多。

In terms of speed, linear motor has considerable advantages. The speed of linear motor reaches 300m / min and the acceleration reaches 10g; The speed of the ball screw is 120m / min and the acceleration is 1.5g. From the comparison of speed and acceleration, linear motor has considerable advantages, and the speed of linear motor will be further improved after successfully solving the heating problem, while the speed of "rotating servo motor + ball screw" is limited and it is difficult to improve more.

從動態(tài)響應(yīng)上因為運動慣量和間隙以及機構(gòu)復(fù)雜性等問題直線電機也占有優(yōu)勢。

In terms of dynamic response, linear motor also has advantages because of the problems of motion inertia, clearance and mechanism complexity.

速度控制上直線電機因其響應(yīng)快，調(diào)速范圍更寬，可以實現(xiàn)啟動瞬間達(dá)到高轉(zhuǎn)速，高速運行時又能迅速停止。調(diào)速范圍可達(dá)到1：10000。

In speed control, because of its fast response and wider speed regulation range, the linear motor can achieve high speed at the moment of starting, and can stop quickly when running at high speed. The speed regulation range can reach 1:10000.

二、精度比較：

2、 Accuracy comparison:

精度方面直線電機因傳動機構(gòu)簡單減少了插補滯后的問題，定位精度、重現(xiàn)精度、精度，通過位置檢測反饋控制都會較“旋轉(zhuǎn)伺服電機+滾珠絲杠”高，且容易實現(xiàn)。

In terms of accuracy, the linear motor reduces the problem of interpolation lag due to the simple transmission mechanism. The positioning accuracy, reproduction accuracy and accuracy through position detection feedback control will be higher than "rotating servo motor + ball screw", and it is easy to realize.

直線電機定位精度可達(dá)0.1μm。“旋轉(zhuǎn)伺服電機+滾珠絲杠”高達(dá)到2~5μm，且要求CNC-伺服電機-無隙連軸器-止推軸承-冷卻系統(tǒng)-高精度滾動導(dǎo)軌-螺母座-工作臺閉環(huán)整個系統(tǒng)的傳動部分要輕量化，光柵精度要高。

The positioning accuracy of linear motor can reach 0.1 μ m。“ Rotating servo motor + ball screw "up to 2 ~ 5 μ m. It also requires CNC servo motor gapless coupling thrust bearing cooling system high-precision rolling guide nut seat worktable closed-loop. The transmission part of the whole system should be lightweight and the grating accuracy should be high.

若想達(dá)到較高平穩(wěn)性，“旋轉(zhuǎn)伺服電機+滾珠絲杠”要采取雙軸驅(qū)動，直線電機是高發(fā)熱部件，需采取強冷措施，要達(dá)到相同目的，直線電機則要付出更大的代價。

If you want to achieve high stability, "rotary servo motor + ball screw" should adopt double shaft drive. Linear motor is a high heating component, and strong cooling measures need to be taken. To achieve the same purpose, linear motor has to pay a greater price.

三、比較：

3、 Price comparison:

方面直線電機的要高出很多，這也是限制直線電機被更廣泛應(yīng)用的原因。

In terms of price, the price of linear motor is much higher, which is also the reason for limiting the wider application of linear motor.

四、能耗比較：

4、 Energy consumption comparison:

直線電機在提供同樣轉(zhuǎn)矩時的能耗是“旋轉(zhuǎn)伺服電機+滾珠絲杠”一倍以上，“旋轉(zhuǎn)伺服電機+滾珠絲杠”屬于、增力型傳動部件，直線電機可靠性受控制系統(tǒng)穩(wěn)定性影響，對周邊的影響很大采取有效隔磁與防護(hù)措施，隔斷強磁場對滾動導(dǎo)軌的影響和對鐵屑磁塵的吸附。

The energy consumption of linear motor when providing the same torque is more than twice that of "rotary servo motor + ball screw". The "rotary servo motor + ball screw" is an energy-saving and force increasing transmission component. The reliability of linear motor is affected by the stability of control system, which has a great impact on the surrounding, and effective magnetic isolation and protection measures are taken, Isolate the influence of strong magnetic field on rolling guide rail and the adsorption of iron dust.