公开(公告)号：US20220171180A1

公开(公告)日：2022-06-02

申请号：US17109929

申请日：2020-12-02

Applicant: Politecnico Di Milano ,  STMicroelectronics S.r.l.

Inventor： Paolo FRIGERIO ,  Giacomo LANGFELDER ,  Luca MOLINARI ,  Giuseppe MAIOCCHI ,  Andrea BARBIERI

IPC: G02B26/08 ,  B06B1/02

Abstract: Disclosed herein is a control system for a projection system, including a first subtractor receiving an input drive signal and a feedback signal and generating a first difference signal therefrom, the feedback signal being indicative of position of a quasi static micromirror of the projection system. A type-2 compensator receives the first difference signal and generates therefrom a first output signal. A derivative based controller receives the feedback signal and generates therefrom a second output signal. A second subtractor receives the first and second output signals and generates a second difference signal therefrom. The second difference signal serves to control a mirror driver of the projection system. A higher order resonance equalization circuit receives a pre-output signal from an analog front end of the projection system that is indicative of position of the quasi static micromirror, and generates the feedback signal therefrom.

公开(公告)号：US20170047871A1

公开(公告)日：2017-02-16

申请号：US14824193

申请日：2015-08-12

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Giuseppe MAIOCCHI

IPC: H02P6/00

CPC classification number: H02P6/28 ,  H02M5/458 ,  H02P6/006 ,  H02P6/085

Abstract: A power supply may include power generation circuits, each configured to drive a respective winding of a multiphase motor; converter circuits, each configured to generate a digital driving signal for a respective power generation circuit, and a memory configured to store a plurality of fast recirculation compensation values corresponding to combinations of the digital driving signals that would otherwise result in a fast recirculation condition. The power supply may also include a controller coupled to the memory and configured to determine when a given combination of the digital driving signals would otherwise result in a fast recirculation condition, and based upon the determination, substitute at least one corresponding fast recirculation compensation value for the given combination of the digital driving signals.

Abstract translation: 电源可以包括发电电路，每个发电电路被配置为驱动多相电动机的相应绕组; 转换器电路，每个被配置为产生用于相应的发电电路的数字驱动信号;以及存储器，被配置为存储对应于否则将导致快速再循环状态的数字驱动信号的组合的多个快速再循环补偿值。 电源还可以包括耦合到存储器并被配置为确定数字驱动信号的给定组合何时会导致快速再循环状况的控制器，并且基于该确定，将至少一个对应的快速再循环补偿值替换为 给定的数字驱动信号组合。

公开(公告)号：US20140354201A1

公开(公告)日：2014-12-04

申请号：US14284636

申请日：2014-05-22

Applicant: STMicroelectronics S.r.l.

Inventor： Giuseppe MAIOCCHI

IPC: H02P6/00

CPC classification number: H02P6/28 ,  H02P6/085 ,  H02P6/182 ,  H02P2203/00 ,  H02P2207/05

Abstract: A switching controller of a poly-phase electric motor may generate, in a fully digital manner, a replica of the phase current and/or of the phase (star) voltage of one or more windings of the motor. The switching controller may use digital signals already available for driving the motor to reconstruct a replica of the phase current or the phase voltage, and thereby avoid the need for dedicated analog components for phase current or phase voltage determination.

Abstract translation: 多相电动机的开关控制器可以以完全数字方式产生电动机的一个或多个绕组的相电流和/或相位（星形）电压的复制品。 开关控制器可以使用已经可用于驱动电动机的数字信号来重建相电流或相电压的复制品，从而避免对用于相电流或相电压确定的专用模拟组件的需要。