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内容:---------------------------------------------吃完饭继续研究 我做了个测试 以1/8满电流先开始驱动电机 等待一段时间稳定后 进行步进 采集位置信息 ...,但是换句话说 MT6701的SSI虽然快 但是我也怀疑它的采样周期并不高 我得到的只是其数字滤波器上的余响 动态上基本上都没法得到高的精度 远不如开环稳定准确----------------------,28.5圈每秒 对于50极电机而言 等于1.4kHz 而我采样处理频率才23kHz 虽然目前感觉控制干净利落没有问题 但是按一般至少20倍处理频率的准则 (实际测试 降采样频率降到16kHz后 出现不稳定问题,既然传感器延迟那么大 采用太高处理频率不合称 于是处理频率降到16kHz 以容纳更多算法处理的余地 (实际上 我里面会同时放几种算法以供选择 是各有所长的) 其次是加上限速算法 限制在每秒16圈左右重新测量其性能稳定性,:稳定 手动加乱力负载 没有抖动震荡计算负担(主循环速度): 空闲时 94次/ms 算法启动后 59次/ms 加上RS485满速率工作 48次/ms ( 应该这时候大概50%)最大转速 实测每秒17圈跟踪测试和台阶测试如下图
物理人物大集合
點蒼
15年5个月前
回复于
物理
内容:波尔指出: (1)在原子系统的设想的状态中存在著所谓的"稳定态"。,在这些状态中,粒子的运动虽然在很大程度上遵守经典力学规律,但这些状态稳定性不能用经典力学来解释,原子系统的每个变化只能从一个稳定态完全跃迁到另一个稳定态。 ,(2)与经典电磁理论相反,稳定原子不会发生电磁辐射,只有在两个定态之间跃迁才会产生电磁辐射。
机器人
anjoman
12年5个月前
发表于
机械与工具
内容:灭火机器人共享方案一、基本概况机器人灭火是中小学机器人比赛的常规项目,怎样提高机器人的灭火速度与稳定性是需要重点解决的课题。,该机器人在发挥稳定的情况下(没有加电压),1、2、3、4号房间灭火所使用的时间分别为4.8秒、8.8秒、13.1秒和16.7秒。,2)固定线路走法 该方法组合应用走直线和走弧线两种基本方法,容易受电池电量和地面粗糙程度等因素的影响,算法的稳定性低,使用的人较少。,{motor(0,30); motor(1,-80);} } 四、小结本校机器人实验室刚组建不久,整体算法不是很理想,稳定性不高
对RF19M3探空火箭实验的质疑
warmonkey
12年10个月前
发表于
喷气推进
内容:这个频偏是在2E-14量级但是,lz的地面时钟源,新品大约是1E-11/day的长期稳定度。,厂家资料是1E-12稳定度晶体会受到加速度影响,改变自身的频率,这个问题撇开不谈。
我来谈谈自己的感受,过早的谈谈现实
dracula1429
15年9个月前
发表于
科学技术学
内容:人活着有很多“枷锁”对未来父母的照顾,想要有稳定的住所,幸福的家庭,这一切在很多时候都与我原来的目标有冲突,是选择一条享受生活的道路还是选择一条享受理想的道路?
【手绘】特殊“瓦形重接结构”应用于高速感应炮后级的可行性探究
Ball_Lightning
2年7个月前
回复于
电磁炮
内容:验证放电管作为功率回路开关的可行性,做到稳定触发,并了解其在大电流下的耐久度3.
KC321项目简介
虎哥
11年1个月前
回复于
会员海报
内容:模拟前端,古人说的是对的,要有一定的稳定性。
煤层气
大仙
16年5个月前
发表于
电气电工
内容:沁水盆地煤层气资源量约5.35×1012m3,具有资源分布其中、埋深浅、可采性好、甲烷纯度高(大于95%)等特点,是目前全国第一个勘探程度最高、煤层气储量条件稳定、开发潜力最好的煤层气气田。
【YT-5】玉兔-5 探空火箭招募帖
乖-卡卡
10年7个月前
回复于
喷气推进
内容:推进剂,无可厚非,各有千秋,主要把握好工艺,原料纯度
稳定。
详解模型火箭箭体,发射架制造及一次成功的火箭发射
极度深寒
12年6个月前
回复于
喷气推进
内容:附赠几种常见的尾翼形状 未完待续下一部分稳定性
驳小日本宅男的能量回收
MicroSound
12年7个月前
发表于
电磁炮
内容:宅男的设计是把上个线圈剩余的能量疏导到了下一级线圈,因为两个线圈是串联的,如果不考虑电阻的话,最终两个线圈的电流会稳定到一个相同的数值上,如果前后两个线圈是同密度绕制的话,则两个线圈内会形成相同的磁场强度
Re:回 1楼(game00over) 的帖子
立棍
12年7个月前
回复于
科学技术学
内容:是一种不稳定,高资金流动,高变化,缺乏信誉的高风险方案。,你的大局意识难道不知道,一个相对稳定,熟练,自由的运营模式,才是高效的吗?
战斗机万向球驾驶间
玄明
16年0个月前
回复于
极客DIY
内容:用摄像头复杂了些,出故障的几率恐怕会比较高,非机械部件在这方面的稳定性应该更好。
回 4楼(虎哥) 的帖子
鬼灯哥
11年11个月前
回复于
喷气推进
内容:而且这种RAP似乎可以正常扩张燃面,因为关于燃速测定装置的三个实验使用的导火线不是别的,就是手搓的RAP条,燃烧后既不会产生残渣燃速也很稳定,这点真的不太懂,还请神们指点。。
“脉冲激光测距”在特殊条件下代替微波多普勒装置对弹丸运动过程分析的可行性探究
Ball_Lightning
2年7个月前
发表于
电磁炮
内容:我苦思冥想,终于想出了一种用初中物理就能解决的方式(我们有算这个的应用题)如图这玩意现在肯定是有很多问题的,比如发射时线圈的脉冲干扰,元件的延迟,驱动的稳定程度,采集测量的精度等还有一点就是我不知怎么把一个如此高频的信号录到电脑里
嵌入式主板在医用B超诊断仪中的应用
mass_lynnxy
16年5个月前
发表于
电子技术
内容:ARBOR嵌入式微型主板凭借自身体积小巧、性能强大、功耗低和稳定性强的优势受到国内外众多医疗设备生产厂商的青睐,并且已经在国内外新型便携式全数字B超诊断仪中得到了成功的应用。,ARBOR嵌入式微型主板凭借自身体积小巧、性能强大、低功耗及超强稳定性能,ARBOR嵌入式微型主板,同时也是核磁共震、多参数临护仪、移动式医疗诊断电脑系统(护理车上)、超音波扫描系统、X光影像系统、电脑手术刀
关于TC442X芯片在高频小特斯拉线圈上的应用探索
rb-sama
8年9个月前
发表于
高电压技术
动手实践: 实验报导,严肃内容: 专著/论述
内容:这个过程不断增强,从而维持电路的稳定震荡,并且在Ls高端输出高频高压,从而产生美丽的紫色电弧!,但是出现了启动之后不稳定的情况,后来我对Q1的栅极驱动波形作了测试,才发现问题的根本所在。,虽然不能做到完全平静无声,但是能够稳定工作了。,难道只能通过再加一级放大来实现稳定工作?
MPCVD到底需要怎样的微波源?——使用KC908测量磁控管微波源的输出品质
虎哥
4年6个月前
回复于
EMP和强微波
内容:固态源的频率稳定度取决于参考源,通常是晶体,能够轻松做到20ppm以内,若采用温补晶体就能达到1ppm或更好。,而磁控管源的频率稳定(长稳)度只有千分之5,或5000ppm。,不过,在电源良好,短稳尚可的情况下,MPCVD可以通过调谐器补偿频率变化带来的阻抗变化,能够接受5000ppm的频率稳定度。
KC761能谱仪日常进度(含设计变更公告)专用帖
虎哥
1年10个月前
回复于
核技术与核仪器
内容:总体而言,整个实验过程中电路部分未出任何问题,晶体的减震补偿措施效果拔群,峰位相对稳定,外壳除倾斜着地时留下一处局部变形,无螺丝柱折断,无其它裂纹、脱落物,基本功能未受任何影响,可以认为抗震、抗摔性能是非常优秀的
弧微分等价代换定理的适用范围
suncl
5年10个月前
回复于
数学
内容:起着决定作用的解析解不存在数值不稳定的问题,可被人重复导出,具有科学美,解析解的计算量极少,计算精度高,可以用于校验数值解,解析解是数值解的基础,数值解与解析解不一致时,数值解必然有误,解析解作为计算公式易于掌握
干混另类kndx(原创)
麒麟
13年0个月前
发表于
喷气推进
内容:但是燃烧不
稳定。
【业余火箭制式化系列之三】打造震动式沉降加速器
ehco
13年9个月前
发表于
喷气推进
内容:下方是加重底座,起到稳定机械的作用。
浅析部分无线电测向技术体制 - 转
mass_lynnxy
16年10个月前
发表于
无线电
内容:干涉仪测向体制中基于复数电压测量的相关干涉仪测向体制以其具有测向准确度高、测向灵敏度高、测向速度快、抗干扰能力强、稳定性好、设备复杂度较低等优点,成为目前无线电监测中主流的测向体制。,相关干涉仪测向体制的基本原理与技术基础 1.1 基本原理 在远离辐射的某一观察面上,设置由几个天线构成的天线阵列,尽管各天线可能有一些差别,并对电场有一定的扰动,但只要是稳定不变的,那么对一个确定频率
做了一个“双筒望远镜稳像器”
10班陈大葱22号
13年8个月前
回复于
电子技术
内容:因为我是要稳定频率高于2Hz的抖动,所以只用积分最近一段时间内的数据。
SR 电机工作原理
公众号EV技研作者1900
5年5个月前
发表于
电动汽车
内容:无论哪一种,只要能根据电 机线圈的旋转位置及时切换励磁绕组,并对准磁阻减 小的方向,就可以产生单向转矩,使电机稳定旋转。
[科创航天][转]能自动追踪目标的摄像机
warmonkey
13年8个月前
发表于
航天技术
内容:后来被推广到机器视觉领域.由于收敛速度快,稳定,国话叫鲁棒性.得到广泛应用.
看完CCAV10的科学世界和科技人生,你才会知道中外科学家的区别
虎哥
15年6个月前
回复于
科学技术学
内容:现在,能留校,能在大学当老师,能进国有研究所……对很多人来说这些都是炫耀的资本,因为这意味着旱涝保收,工作稳定有地位。
有一段对中医的点评很精辟,和大家分享一下
虎哥
11年4个月前
回复于
科学技术学
内容:而且对于中药这种材质性质极不稳定的药物,要取得一个可重复的结果有一定难度。
天然广谱抗生素—大蒜素
雪瑷微瑕
16年3个月前
回复于
化学
内容:其性质极不稳定,于室温放置二天即成不活动性的稠液,加碱可使之失效,加热后很容易破坏,所以国外迄今尚无注射剂供临床使用。,但在稀酸中较
稳定。
,其化学性质比较稳定,并已可人工合成。
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