电动机控制器系统
Motor controller system
电气控制是显示电动叉车技术水平的一个重要因素。因此，随着电子技术的发展，电瓶叉车的电控也日趋完善。电动机控制器的发展主要经历了以下几个阶段：（1）电池直接启动，仅靠复杂的调整或电池的放电控制。（2）电阻器启动。控制能量损失大，只可有限地分解速度。（3）晶闸管控制器（也叫可控硅控制器）控制。 晶体管控制使可靠性大大提高。（4）双极晶体管控制。与晶闸管相比，使用更加简单，但是电路的可靠性要求比较高。（5）MOS场效应管（即金属-氧化物-半导体场效应管）控制。门极驱动电流小，并联控制特性好，正向电压降较小，开关损失降低，MOS场效应管比双极晶体管的控制特性更好。由于减少了元器件，并采用全封闭装置，可靠性大大提高。通常SCR（可控硅）控制器的插座电压为1~1.5V，而MOS场效应管控制器的插座电压0.25V。MOS管场效应管的工作效率更高，允许的速度更大，操作噪声更小，保护措施更强，所以的用户电源都有防短路保护装置，并且具有独特的三项安全保护措施，即软件自动保护措施，硬件自动保护和硬件自我诊断保护。
Electrical control is an important factor to show the technical level of electric forklift. Therefore, with the development of electronic technology, the electric control of battery forklift is becoming more and more perfect. The development of motor controller mainly experienced the following stages: (1) battery start directly, only by complex adjustment or battery discharge control. (2) The resistor is activated. The control energy loss is large, and the speed can only be decomposed finitely. (3) Thyristor controller (also called thyristor controller) control. Transistor control greatly improves reliability. (4) Bipolar transistor control. Compared with the thyristor, it is simpler to use, but the reliability of the circuit is higher. (5) MOS FET (metal oxide semiconductor FET) control. The gate drive current is small, the parallel control characteristic is good, the forward voltage drop is small, the switch loss is reduced, and the control characteristic of MOS FET is better than that of bipolar transistor. Due to the reduction of components and the use of fully enclosed devices, the reliability is greatly improved. Generally, the socket voltage of SCR controller is 1 ~ 1.5V, while that of MOS FET Controller is 0.25V. MOS FET has higher working efficiency, higher allowable speed, less operation noise and stronger protection measures. Therefore, all users' power supplies have anti short circuit protection devices, and have three unique safety protection measures, namely software automatic protection measures, hardware automatic protection and hardware self diagnosis protection.
Motor controller system
电气控制是显示电动叉车技术水平的一个重要因素。因此，随着电子技术的发展，电瓶叉车的电控也日趋完善。电动机控制器的发展主要经历了以下几个阶段：（1）电池直接启动，仅靠复杂的调整或电池的放电控制。（2）电阻器启动。控制能量损失大，只可有限地分解速度。（3）晶闸管控制器（也叫可控硅控制器）控制。 晶体管控制使可靠性大大提高。（4）双极晶体管控制。与晶闸管相比，使用更加简单，但是电路的可靠性要求比较高。（5）MOS场效应管（即金属-氧化物-半导体场效应管）控制。门极驱动电流小，并联控制特性好，正向电压降较小，开关损失降低，MOS场效应管比双极晶体管的控制特性更好。由于减少了元器件，并采用全封闭装置，可靠性大大提高。通常SCR（可控硅）控制器的插座电压为1~1.5V，而MOS场效应管控制器的插座电压0.25V。MOS管场效应管的工作效率更高，允许的速度更大，操作噪声更小，保护措施更强，所以的用户电源都有防短路保护装置，并且具有独特的三项安全保护措施，即软件自动保护措施，硬件自动保护和硬件自我诊断保护。
Electrical control is an important factor to show the technical level of electric forklift. Therefore, with the development of electronic technology, the electric control of battery forklift is becoming more and more perfect. The development of motor controller mainly experienced the following stages: (1) battery start directly, only by complex adjustment or battery discharge control. (2) The resistor is activated. The control energy loss is large, and the speed can only be decomposed finitely. (3) Thyristor controller (also called thyristor controller) control. Transistor control greatly improves reliability. (4) Bipolar transistor control. Compared with the thyristor, it is simpler to use, but the reliability of the circuit is higher. (5) MOS FET (metal oxide semiconductor FET) control. The gate drive current is small, the parallel control characteristic is good, the forward voltage drop is small, the switch loss is reduced, and the control characteristic of MOS FET is better than that of bipolar transistor. Due to the reduction of components and the use of fully enclosed devices, the reliability is greatly improved. Generally, the socket voltage of SCR controller is 1 ~ 1.5V, while that of MOS FET Controller is 0.25V. MOS FET has higher working efficiency, higher allowable speed, less operation noise and stronger protection measures. Therefore, all users' power supplies have anti short circuit protection devices, and have three unique safety protection measures, namely software automatic protection measures, hardware automatic protection and hardware self diagnosis protection.
