直流电机技术参数说明
直流电机技术参数说明(DC Motor technical parameter description)
- 以下数值都是在标称电压及外部环境温度25℃ 条件下测量或计算
(The following values are measured and calculated at nominal voltage under the temperature at 25 ℃)
1、技术用语(Technical words)
用 语 | 符 号 | 单位 | 用 语 | 符 号 | 单位 |
电压 | Voltage | U | V | 输入功率 | Input power | P | W |
电流 | Current | I | A | 输出功率 | Output power | P | W |
无负荷电流 | No-load current | I0 | A | 最高输出功率 | Maximum output power | Pmax | W |
停动电流 | Stall current | Is | A | 效率 | Efficiency | η | % |
转数 | Speed | N | r/m,rpm | 最高效率 | Maximum efficiency | ηmax | % |
无负荷转数 | No-load speed | N0 | r/m,rpm | 转矩 | Torque | T | g.cm,mN.m |
电阻 | Resistance | R | Ω | 停动转矩 | Stall torque | Ts | g.cm,mN.m |
2、空载电流(No load current)--I0
电机在额定电压下,空载达到稳定状态时所消耗的电流,此参数受温度影响。
(The current consumed after stable under the rated voltage when there is no loaded. This parameter will be affected by different temperatures.)
3、空载转速(No load speed)--N0
电机在额定电压下,空载达到稳定状态时获得的最高转速。
(The highest speed obtained after stable under the rated voltage.)
4、堵转力矩(Stall torque)--Ts
电机在额定电压下,转速为零时输出的力矩,此参数与温度密切相关。
(Stall Torque is the torque produced by the motor whose output rotation speed is zero under the rated voltage. This parameter is highly effected by different
temperatures.)
5、起动电流(Stall current)--Is
在额定电压下,起动时和加锁时流过的最大电流。
(Stall current is the current that the motor draws when its shaft if prevented from moving.)
6、最大输出功率(Maximum output power)--Pmax
电机在额定电压下,能输出的最大机械功率。
(The maximum output power of the motor at the rated voltage.)
7、最大输出效率(Maximum output efficiency)--ηmax
电机输出的机械功率与消耗的电功率的最高比率。
(The maximum ratio of output power of the motor to the consumption of electrical power.)
8、电动势常数(Back - EMF constant)--KE(mV/rpm)
此常数反映了转子的感应电压和旋转速度之间的关系。
(The constant corresponding to the relationship between the induced voltage in the rotor and the speed of rotation.)
9、转矩常数(Torque constant)--Kt (g.cm/A)
此常数反映了电机产生的转矩和电流消耗之间的关系。
(The constant corresponding to the relationship between the torque developed by the motor and the current drawn.)
10、速度常数(Speed constant)--Kn (rpm/V)
当电机负载恒定时,加在电机上每伏电压引起的速度变化。
(The speed variation per volt applied to the motor terminals at the constant load.)
11、机械时间常数(Mechanical time constant)--tm (ms)
电机从静止状态加速到最终空载转速的63%所需要的时间
(The time required for the motor to reach a speed of 63% of its final no load speed, from standstil.)
, 其中 R: 静态电阻(Static resistance), J: 转子惯量(Rotor inertia)