Tuningless servo controller using variable structure control and disturbance compensation

Control of 400 Watt Belt-Drive and 400 Watt Ball-Screw Servo Systems Using Discrete-Time Variable Structure Control

“…is a generalized disturbance. For the generalized system (3), the RDVSC with DDC method were proposed earlier (Eun, et al, 1999), (Kim, Oh, and Cho, 2000), and applied to a belt-drive servo system (Bahn, et al, 2014). This paper presents more general cases including a ball-screw connection and more detailed experimental results.…”

“…A decoupled disturbance compensator (DDC) with DVSC was proposed (Eun, et al, 1999), and for a faster response, a recursive switching function technique was also proposed (Kim, Oh, and Cho, 2000). Recently, a tuningless method for a servo drive based on the DVSC with DDC has also been developed (Bahn, et al, 2014). However, this method was limited to a motor with belt-drive load, which is not as harsh as a ball-screw load.…”

Self-tuning of Controller Parameters of Servo System based on Variable Step Size Iteration Method

“…In permanent magnet synchronous servo system, the bandwidth of the current loop is much higher than the open loop cutoff frequency of the speed loop, so the current loop can be equivalent to a first order inertial link [8]. The simplified velocity loop structure is shown in Figure 1.…”

Self-tuning Speed Controller with Load Parameters Observer for Servo Drives

“…Different control approaches comprising the load parameters' identification are reported in other studies. For example, [4], [5] proposed control systems based on recursive least-square (RLS) observer, whereas a neural network was suggested in [6], and a variable structure control was introduced in [7]. Some of these studies have two major drawbacks.…”