I need to know the smart servo motor (HT1) parameters ( the internal resistance and inductance and the inertia)

Hi, Here is the information for the HT1 coreless DC Motor : Terminal Resistance: 3.00 Ohm Terminal Inductance: 0.65 mH Rotor Inertia: 1.32 g.cm2 Hope this helps,

thank you @bdaouas these values are what exactly i’m looking for but please can you also specify the torque constant, back EMF constant and motor viscous friction.

Based on the LSS HT1 performance graph that can be found in this Wiki page (which was obtained from our tests), these constants can be calculated. Here is the constants: Torque constant (Kt): 0.6 N·m/A Back EMF constant (Ke): 0.16 V/rpm or 1.5 V/(rad.s-1) We certainly apprecia…

Are you planning to physically create the robot or only a simulation of it ? Please feel free to post about it here if possible, would be interesting to know more about it.

Hi, i need to create a model for HT1 lynxmotion smart servo using simscape for pid control and i got the motor parameters from here : High torque smart servo (HT1) parameters motor model : [motor] so i want to know is this model really represent the motor and what is the en…

@john97 Unfortunately beyond the specifications provided, RobotShop is not in a position to confirm or aid in the development of an external motion controller (or aid in the re-engineering of the internal motion controller). We do appreciate that you are looking to model the serv…

Hi, i’m working on a similar project and i also need to know these parameters. now i fortunately got these parameters but can anyone specify the viscous friction for the motor and the encoder gain ??

Hi, Not sure what you mean by the “encoder gain”. The encoder IC inside the HT1 servo provides the information to MCU via I2C. The minimum torque required to rotate the HT1 servo (unpowered) is 0.175 Kg.cm not sure if this value can help you calculate the viscous friction. Also…

Hi, First of all i wanna thank you sir for your information… In my mathematical model the input signal to my LSS motor , its type is volt or current ? if it is voltage, and I want to rotate my motor i.e 30 degree, How can i control the value of this signal to get my acceptable…

Hi, Smart servos are very different from regular RC servos (that takes PWM signal as input) or DC Motors (that takes analog voltage signal as input). Smart servos are controlled through serial commands and have their internal control. Therefore, a serial command of position (or …

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High torque smart servo (HT1) parameters

Lynxmotion Servo Erector Set

john97 February 21, 2020, 9:39pm 7

First of all i want to thank you for specifying these information. And you are right about what you have just said, these information for modeling a 3 DOF manipulator system to be controlled using PID control. This is my graduation project and the main task is for trajectory planning for this manipulator.