A drive system (10), in particular for process automation, includes: a trajectory planning unit (3), which is adapted to provide a trajectory signal (xd) on the basis of a setpoint signal (xs), and an actuator unit (2) having an actuator member (1), in particular a valve member, which actuator unit (2) is adapted to control and/or regulate a position of the actuator member (1) on the basis of the trajectory signal (xd). The trajectory planning unit (3) is adapted to provide the trajectory signal (xd) with a first signal section (s1) and a second signal section (s2), the first signal section (s1) having a straight signal form and the second signal section (s2) having a signal form asymptotic to the setpoint signal (xs).

A drive system (10), in particular for process automation, includes: a trajectory planning unit (3), which is adapted to provide a trajectory signal (xd) on the basis of a setpoint signal (xs), and an actuator unit (2) having an actuator member (1), in particular a valve member, which actuator unit (2) is adapted to control and/or regulate a position of the actuator member (1) on the basis of the trajectory signal (xd). The trajectory planning unit (3) is adapted to provide the trajectory signal (xd) with a first signal section (s1) and a second signal section (s2), the first signal section (s1) having a straight signal form and the second signal section (s2) having a signal form asymptotic to the setpoint signal (xs).

Embodiments are directed to systems and methods for utilizing a two-degree-of-freedom model-following control law within an architecture of nested loop functions. This allows for the separation of command and feedback path requirements and enables the restrictions of the inner loops to be applied to the outer loop feedbacks. This method of restriction allows a better allocation of coordinated authority between the loops.

Embodiments are directed to systems and methods for utilizing a two-degree-of-freedom model-following control law within an architecture of nested loop functions. This allows for the separation of command and feedback path requirements and enables the restrictions of the inner loops to be applied to the outer loop feedbacks. This method of restriction allows a better allocation of coordinated authority between the loops.

Systems and methods for tuning a closed-loop controller for a hot melt liquid dispensing system are disclosed. In an example method, based on a set temperature setpoint, the hot melt liquid dispensing system is maintained at a steady state with respect to a temperature process variable and a heater duty cycle control variable. The heater duty cycle control variable is brought to a sustained oscillation. An amplitude and an ultimate period are determined. An ultimate gain is determining based on the step value and the amplitude. A proportional, integral, or derivative constant is determined based the ultimate period and/or ultimate gain. The closed-loop controller is implemented using the proportional, integral, or derivative constant.

Systems and methods for tuning a closed-loop controller for a hot melt liquid dispensing system are disclosed. In an example method, based on a set temperature setpoint, the hot melt liquid dispensing system is maintained at a steady state with respect to a temperature process variable and a heater duty cycle control variable. The heater duty cycle control variable is brought to a sustained oscillation. An amplitude and an ultimate period are determined. An ultimate gain is determining based on the step value and the amplitude. A proportional, integral, or derivative constant is determined based the ultimate period and/or ultimate gain. The closed-loop controller is implemented using the proportional, integral, or derivative constant.

A method may include receiving data representative of one or more commands generated by a model-less controller to control operations of devices within a system and output parameters associated with the devices of the system. The method may also include determining whether the data is indicative of a change in operational characteristics of the system and generating a model representative of the operational characteristics of the system as a function of the data based on a Bayesian optimization algorithm in response to the data being indicative of the change. The method may also involve transmitting an excitation input to the devices in response to the data not being indicative of the change, receiving updated output parameters associated with the devices of the system after the excitation input is transmitted, and generating the model based on the updated output parameters and the excitation input.

An atherectomy system includes a drive mechanism that is adapted to rotatably actuate an atherectomy burr and a controller that is adapted to regulate operation of the drive mechanism. In some cases, the drive mechanism includes a drive cable that is coupled with the atherectomy burr and a drive motor that is adapted to rotate the drive cable. The controller is adapted to receive an indication of an increase in torque experienced at the atherectomy burr and is further adapted to, in response, regulate operation of the drive mechanism such that the increase in torque results in a noticeable reduction in speed of the drive mechanism such that a user of the atherectomy system notices the reduction in speed and is alerted to the increase in torque.

An atherectomy system includes a drive mechanism that is adapted to rotatably actuate an atherectomy burr and a controller that is adapted to regulate operation of the drive mechanism. In some cases, the drive mechanism includes a drive cable that is coupled with the atherectomy burr and a drive motor that is adapted to rotate the drive cable. The controller is adapted to receive an indication of an increase in torque experienced at the atherectomy burr and is further adapted to, in response, regulate operation of the drive mechanism such that the increase in torque results in a noticeable reduction in speed of the drive mechanism such that a user of the atherectomy system notices the reduction in speed and is alerted to the increase in torque.

In a resonance suppression control device that controls suppression of vibrations in a resonance frequency in each vibration mode of a control target having a plurality of vibration modes, a configuration that is simple, and can suppress vibrations in a resonance frequency in the plurality of vibration modes is provided. A control device is a resonance suppression control device that controls suppression of vibrations in a resonance frequency in each vibration mode of a control target having a plurality of vibration modes. The control device includes a plurality of feedback loops that provide negative feedback of output of the control target corresponding to the plurality of vibration modes to an input side. The plurality of feedback loops respectively include band-pass filters that extract one or more vibration modes from the plurality of vibration modes, phase compensators, and amplitude adjusters. The band-pass filters and the phase compensators function as differentiators.